first submission

This commit is contained in:
qiyongshuang
2023-02-01 14:19:13 +08:00
parent d534aad004
commit b79c6ac80d
3711 changed files with 745432 additions and 2 deletions
+143
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@@ -0,0 +1,143 @@
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<scannerConfigBuildInfo instanceId="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release.1008047074;ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release.1008047074.;ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.1731377187;ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.input.2036806839">
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<storageModule moduleId="org.eclipse.cdt.make.core.buildtargets"/>
</cproject>
+61
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@@ -0,0 +1,61 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<projectDescription>
<name>Sleep_Mode</name>
<comment/>
<projects/>
<buildSpec>
<buildCommand>
<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
<triggers>clean,full,incremental,</triggers>
<arguments/>
</buildCommand>
<buildCommand>
<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
<triggers>full,incremental,</triggers>
<arguments/>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.cdt.core.cnature</nature>
<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
</natures>
<filteredResources>
<filter>
<id>1595986042669</id>
<name/>
<type>22</type>
<matcher>
<id>org.eclipse.ui.ide.multiFilter</id>
<arguments>1.0-name-matches-false-false-*.wvproj</arguments>
</matcher>
</filter>
</filteredResources>
<linkedResources>
<link>
<name>Core</name>
<type>2</type>
<location>PARENT-2-PROJECT_LOC/SRC/Core</location>
</link>
<link>
<name>Debug</name>
<type>2</type>
<location>PARENT-2-PROJECT_LOC/SRC/Debug</location>
</link>
<link>
<name>Ld</name>
<type>2</type>
<location>PARENT-2-PROJECT_LOC/SRC/Ld</location>
</link>
<link>
<name>Peripheral</name>
<type>2</type>
<location>PARENT-2-PROJECT_LOC/SRC/Peripheral</location>
</link>
<link>
<name>Startup</name>
<type>2</type>
<location>PARENT-2-PROJECT_LOC/SRC/Startup</location>
</link>
</linkedResources>
</projectDescription>
@@ -0,0 +1,14 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<project>
<configuration id="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.release.1008047074" name="obj">
<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="821444767900439805" id="ilg.gnumcueclipse.managedbuild.cross.riscv.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT RISC-V Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
<language-scope id="org.eclipse.cdt.core.gcc"/>
<language-scope id="org.eclipse.cdt.core.g++"/>
</provider>
</extension>
</configuration>
</project>
+16
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@@ -0,0 +1,16 @@
Mcu Type=CH32V20x
Address=0x08000000
Target Path=obj/Sleep_Mode.hex
Erase All=true
Program=true
Verify=true
Reset=true
Vendor=WCH
Link=WCH-Link
Toolchain=RISC-V
Series=CH32V203
Description=ROM(byte): 64K, SRAM(byte): 20K, CHIP PINS: 32, GPIO PORTS: 27.\nWCH CH32V2 series of mainstream MCUs covers the needs of a large variety of applications in the industrial,medical and consumer markets. High performance with first-class peripherals and low-power,low-voltage operation is paired with a high level of integration at accessible prices with a simple architecture and easy-to-use tools.
PeripheralVersion=1.0
MCU=CH32V203RBT6
@@ -0,0 +1,2 @@
�i“CZ ?"Ç�¸rŸ�F<Fy8E9Y‡½„%Pa³D¶La† %Ã'y€¡]Ç;’¶ŸS)1†1+R4><‚.„ÇÅ¿º°?/£XO©Ä¿ChQN$*¢”»EÅBk‹!2tŒ+buh†nUb]xl‹l|
+"Ÿ<“¯AH42}z8p;m€u1Ž-¦eh»Od¼Âwµª7x{5�CqEx©=;¦¢e¢º»2£Š ‚«*BP Mš"
@@ -0,0 +1,42 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_conf.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Library configuration file.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V20x_CONF_H
#define __CH32V20x_CONF_H
#include "ch32v20x_adc.h"
#include "ch32v20x_bkp.h"
#include "ch32v20x_can.h"
#include "ch32v20x_crc.h"
#include "ch32v20x_dbgmcu.h"
#include "ch32v20x_dma.h"
#include "ch32v20x_exti.h"
#include "ch32v20x_flash.h"
#include "ch32v20x_gpio.h"
#include "ch32v20x_i2c.h"
#include "ch32v20x_iwdg.h"
#include "ch32v20x_pwr.h"
#include "ch32v20x_rcc.h"
#include "ch32v20x_rtc.h"
#include "ch32v20x_spi.h"
#include "ch32v20x_tim.h"
#include "ch32v20x_usart.h"
#include "ch32v20x_wwdg.h"
#include "ch32v20x_it.h"
#include "ch32v20x_misc.h"
#endif /* __CH32V20x_CONF_H */
@@ -0,0 +1,61 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_it.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main Interrupt Service Routines.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x_it.h"
void NMI_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void HardFault_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void EXTI0_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
/*********************************************************************
* @fn NMI_Handler
*
* @brief This function handles NMI exception.
*
* @return none
*/
void NMI_Handler(void)
{
}
/*********************************************************************
* @fn HardFault_Handler
*
* @brief This function handles Hard Fault exception.
*
* @return none
*/
void HardFault_Handler(void)
{
while (1)
{
}
}
/*********************************************************************
* @fn EXTI0_IRQHandler
*
* @brief This function handles EXTI0 Handler.
*
* @return none
*/
void EXTI0_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line0)!=RESET)
{
printf("EXTI0 Wake_up\r\n");
EXTI_ClearITPendingBit(EXTI_Line0); /* Clear Flag */
}
}
@@ -0,0 +1,20 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_it.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : This file contains the headers of the interrupt handlers.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V20x_IT_H
#define __CH32V20x_IT_H
#include "debug.h"
#endif /* __CH32V20x_IT_H */
+89
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@@ -0,0 +1,89 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : main.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main program body.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
/*
*@Note
low power, sleep mode routine:
EXTI_Line0(PA0)
This routine demonstrates WFI enters sleep mode, PA0 pin input low level triggers external
interrupt EXTI_Line0 to exit sleep mode,Program execution continues after wake-up.
*/
#include "debug.h"
/* Global define */
/* Global Variable */
/*********************************************************************
* @fn EXTI0_INT_INIT
*
* @brief Initializes EXTI0 collection.
*
* @return none
*/
void EXTI0_INT_INIT(void)
{
GPIO_InitTypeDef GPIO_InitStructure = {0};
EXTI_InitTypeDef EXTI_InitStructure = {0};
NVIC_InitTypeDef NVIC_InitStructure = {0};
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* GPIOA.0 ----> EXTI_Line0 */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);
EXTI_InitStructure.EXTI_Line = EXTI_Line0;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/*********************************************************************
* @fn main
*
* @brief Main program.
*
* @return none
*/
int main(void)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
Delay_Init();
USART_Printf_Init(115200);
printf("SystemClk:%d\r\n", SystemCoreClock);
printf("Sleep Mode Test\r\n");
EXTI0_INT_INIT();
printf("\r\n ********** \r\n");
__WFI();
printf("\r\n ########## \r\n");
while(1)
{
Delay_Ms(1000);
printf("Run in main\r\n");
}
}
@@ -0,0 +1,986 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : system_ch32v20x.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : CH32V20x Device Peripheral Access Layer System Source File.
* For HSE = 32Mhz (CH32V208x/CH32V203RBT6)
* For HSE = 8Mhz (other CH32V203x)
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x.h"
/*
* Uncomment the line corresponding to the desired System clock (SYSCLK) frequency (after
* reset the HSI is used as SYSCLK source).
* If none of the define below is enabled, the HSI is used as System clock source.
*/
//#define SYSCLK_FREQ_HSE HSE_VALUE
//#define SYSCLK_FREQ_48MHz_HSE 48000000
//#define SYSCLK_FREQ_56MHz_HSE 56000000
//#define SYSCLK_FREQ_72MHz_HSE 72000000
#define SYSCLK_FREQ_96MHz_HSE 96000000
//#define SYSCLK_FREQ_120MHz_HSE 120000000
//#define SYSCLK_FREQ_144MHz_HSE 144000000
//#define SYSCLK_FREQ_HSI HSI_VALUE
//#define SYSCLK_FREQ_48MHz_HSI 48000000
//#define SYSCLK_FREQ_56MHz_HSI 56000000
//#define SYSCLK_FREQ_72MHz_HSI 72000000
//#define SYSCLK_FREQ_96MHz_HSI 96000000
//#define SYSCLK_FREQ_120MHz_HSI 120000000
//#define SYSCLK_FREQ_144MHz_HSI 144000000
/* Clock Definitions */
#ifdef SYSCLK_FREQ_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_48MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_56MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_72MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_96MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_96MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_120MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_120MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_144MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_144MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_48MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_56MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_72MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_96MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_96MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_120MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_120MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_144MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_144MHz_HSI; /* System Clock Frequency (Core Clock) */
#else
uint32_t SystemCoreClock = HSI_VALUE; /* System Clock Frequency (Core Clock) */
#endif
__I uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
/* system_private_function_proto_types */
static void SetSysClock(void);
#ifdef SYSCLK_FREQ_HSE
static void SetSysClockToHSE( void );
#elif defined SYSCLK_FREQ_48MHz_HSE
static void SetSysClockTo48_HSE( void );
#elif defined SYSCLK_FREQ_56MHz_HSE
static void SetSysClockTo56_HSE( void );
#elif defined SYSCLK_FREQ_72MHz_HSE
static void SetSysClockTo72_HSE( void );
#elif defined SYSCLK_FREQ_96MHz_HSE
static void SetSysClockTo96_HSE( void );
#elif defined SYSCLK_FREQ_120MHz_HSE
static void SetSysClockTo120_HSE( void );
#elif defined SYSCLK_FREQ_144MHz_HSE
static void SetSysClockTo144_HSE( void );
#elif defined SYSCLK_FREQ_48MHz_HSI
static void SetSysClockTo48_HSI( void );
#elif defined SYSCLK_FREQ_56MHz_HSI
static void SetSysClockTo56_HSI( void );
#elif defined SYSCLK_FREQ_72MHz_HSI
static void SetSysClockTo72_HSI( void );
#elif defined SYSCLK_FREQ_96MHz_HSI
static void SetSysClockTo96_HSI( void );
#elif defined SYSCLK_FREQ_120MHz_HSI
static void SetSysClockTo120_HSI( void );
#elif defined SYSCLK_FREQ_144MHz_HSI
static void SetSysClockTo144_HSI( void );
#endif
/*********************************************************************
* @fn SystemInit
*
* @brief Setup the microcontroller system Initialize the Embedded Flash Interface,
* the PLL and update the SystemCoreClock variable.
*
* @return none
*/
void SystemInit (void)
{
RCC->CTLR |= (uint32_t)0x00000001;
RCC->CFGR0 &= (uint32_t)0xF8FF0000;
RCC->CTLR &= (uint32_t)0xFEF6FFFF;
RCC->CTLR &= (uint32_t)0xFFFBFFFF;
RCC->CFGR0 &= (uint32_t)0xFF80FFFF;
RCC->INTR = 0x009F0000;
SetSysClock();
}
/*********************************************************************
* @fn SystemCoreClockUpdate
*
* @brief Update SystemCoreClock variable according to Clock Register Values.
*
* @return none
*/
void SystemCoreClockUpdate (void)
{
uint32_t tmp = 0, pllmull = 0, pllsource = 0, Pll_6_5 = 0;
tmp = RCC->CFGR0 & RCC_SWS;
switch (tmp)
{
case 0x00:
SystemCoreClock = HSI_VALUE;
break;
case 0x04:
SystemCoreClock = HSE_VALUE;
break;
case 0x08:
pllmull = RCC->CFGR0 & RCC_PLLMULL;
pllsource = RCC->CFGR0 & RCC_PLLSRC;
pllmull = ( pllmull >> 18) + 2;
if(pllmull == 17) pllmull = 18;
if (pllsource == 0x00)
{
if(EXTEN->EXTEN_CTR & EXTEN_PLL_HSI_PRE){
SystemCoreClock = HSI_VALUE * pllmull;
}
else{
SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
}
}
else
{
#if defined (CH32V20x_D8W)
if((RCC->CFGR0 & (3<<22)) == (3<<22))
{
SystemCoreClock = ((HSE_VALUE>>1)) * pllmull;
}
else
#endif
if ((RCC->CFGR0 & RCC_PLLXTPRE) != (uint32_t)RESET)
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = ((HSE_VALUE>>2) >> 1) * pllmull;
#else
SystemCoreClock = (HSE_VALUE >> 1) * pllmull;
#endif
}
else
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = (HSE_VALUE>>2) * pllmull;
#else
SystemCoreClock = HSE_VALUE * pllmull;
#endif
}
}
if(Pll_6_5 == 1) SystemCoreClock = (SystemCoreClock / 2);
break;
default:
SystemCoreClock = HSI_VALUE;
break;
}
tmp = AHBPrescTable[((RCC->CFGR0 & RCC_HPRE) >> 4)];
SystemCoreClock >>= tmp;
}
/*********************************************************************
* @fn SetSysClock
*
* @brief Configures the System clock frequency, HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClock(void)
{
#ifdef SYSCLK_FREQ_HSE
SetSysClockToHSE();
#elif defined SYSCLK_FREQ_48MHz_HSE
SetSysClockTo48_HSE();
#elif defined SYSCLK_FREQ_56MHz_HSE
SetSysClockTo56_HSE();
#elif defined SYSCLK_FREQ_72MHz_HSE
SetSysClockTo72_HSE();
#elif defined SYSCLK_FREQ_96MHz_HSE
SetSysClockTo96_HSE();
#elif defined SYSCLK_FREQ_120MHz_HSE
SetSysClockTo120_HSE();
#elif defined SYSCLK_FREQ_144MHz_HSE
SetSysClockTo144_HSE();
#elif defined SYSCLK_FREQ_48MHz_HSI
SetSysClockTo48_HSI();
#elif defined SYSCLK_FREQ_56MHz_HSI
SetSysClockTo56_HSI();
#elif defined SYSCLK_FREQ_72MHz_HSI
SetSysClockTo72_HSI();
#elif defined SYSCLK_FREQ_96MHz_HSI
SetSysClockTo96_HSI();
#elif defined SYSCLK_FREQ_120MHz_HSI
SetSysClockTo120_HSI();
#elif defined SYSCLK_FREQ_144MHz_HSI
SetSysClockTo144_HSI();
#endif
/* If none of the define above is enabled, the HSI is used as System clock
* source (default after reset)
*/
}
#ifdef SYSCLK_FREQ_HSE
/*********************************************************************
* @fn SetSysClockToHSE
*
* @brief Sets HSE as System clock source and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockToHSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV1;
/* Select HSE as system clock source
* CH32V20x_D6 (HSE=8MHZ)
* CH32V20x_D8 (HSE=32MHZ)
* CH32V20x_D8W (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_HSE;
/* Wait till HSE is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x04)
{
}
}
else
{
/* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_48MHz_HSE
/*********************************************************************
* @fn SetSysClockTo48_HSE
*
* @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo48_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 6 = 48 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 6 = 48 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 6 = 48 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL6);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_56MHz_HSE
/*********************************************************************
* @fn SetSysClockTo56_HSE
*
* @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo56_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 7 = 56 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 7 = 56 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 7 = 56 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL7);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_72MHz_HSE
/*********************************************************************
* @fn SetSysClockTo72_HSE
*
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo72_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 9 = 72 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 9 = 72 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 9 = 72 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL9);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_96MHz_HSE
/*********************************************************************
* @fn SetSysClockTo96_HSE
*
* @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo96_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 12 = 96 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL12);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_120MHz_HSE
/*********************************************************************
* @fn SetSysClockTo120_HSE
*
* @brief Sets System clock frequency to 120MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo120_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if(HSEStatus == (uint32_t)0x01)
{
#if defined (CH32V20x_D8W)
RCC->CFGR0 |= (uint32_t)(3<<22);
/* HCLK = SYSCLK/2 */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV2;
#else
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
#endif
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 15 = 120 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 15 = 120 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/2 * 15 = 240 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL15);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_144MHz_HSE
/*********************************************************************
* @fn SetSysClockTo144_HSE
*
* @brief Sets System clock frequency to 144MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo144_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 18 = 144 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 18 = 144 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 18 = 144 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_48MHz_HSI
/*********************************************************************
* @fn SetSysClockTo48_HSI
*
* @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo48_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 6 = 48 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL6);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_56MHz_HSI
/*********************************************************************
* @fn SetSysClockTo56_HSI
*
* @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo56_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 7 = 48 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL7);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_72MHz_HSI
/*********************************************************************
* @fn SetSysClockTo72_HSI
*
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo72_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 9 = 72 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL9);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_96MHz_HSI
/*********************************************************************
* @fn SetSysClockTo96_HSI
*
* @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo96_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 12 = 96 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL12);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_120MHz_HSI
/*********************************************************************
* @fn SetSysClockTo120_HSI
*
* @brief Sets System clock frequency to 120MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo120_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 15 = 120 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL15);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_144MHz_HSI
/*********************************************************************
* @fn SetSysClockTo144_HSI
*
* @brief Sets System clock frequency to 144MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo144_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 18 = 144 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#endif
@@ -0,0 +1,32 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : system_ch32v20x.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : CH32V20x Device Peripheral Access Layer System Header File.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __SYSTEM_ch32v20x_H
#define __SYSTEM_ch32v20x_H
#ifdef __cplusplus
extern "C" {
#endif
extern uint32_t SystemCoreClock; /* System Clock Frequency (Core Clock) */
/* System_Exported_Functions */
extern void SystemInit(void);
extern void SystemCoreClockUpdate(void);
#ifdef __cplusplus
}
#endif
#endif /*__CH32V20x_SYSTEM_H */
+143
View File
@@ -0,0 +1,143 @@
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View File
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<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
<provider class="org.eclipse.cdt.managedbuilder.language.settings.providers.GCCBuiltinSpecsDetector" console="false" env-hash="869665849465349523" id="ilg.gnumcueclipse.managedbuild.cross.riscv.GCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT RISC-V Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} ${cross_toolchain_flags} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
<language-scope id="org.eclipse.cdt.core.gcc"/>
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+16
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@@ -0,0 +1,16 @@
Mcu Type=CH32V20x
Address=0x08000000
Target Path=obj/Standby_Mode.hex
Erase All=true
Program=true
Verify=true
Reset=true
Vendor=WCH
Link=WCH-Link
Toolchain=RISC-V
Series=CH32V203
Description=ROM(byte): 64K, SRAM(byte): 20K, CHIP PINS: 32, GPIO PORTS: 27.\nWCH CH32V2 series of mainstream MCUs covers the needs of a large variety of applications in the industrial,medical and consumer markets. High performance with first-class peripherals and low-power,low-voltage operation is paired with a high level of integration at accessible prices with a simple architecture and easy-to-use tools.
PeripheralVersion=1.0
MCU=CH32V203RBT6
@@ -0,0 +1,2 @@
�i“CZ ?"Ç�¸rŸ�F<Fy8E9Y‡½„%Pa³D¶La† %Ã'y€¡]Ç;’¶ŸS)1†1+R4><‚.„ÇÅ¿º°?/£XO©Ä¿ChQN$*¢”»EÅBk‹!2tŒ+buh†nUb]xl‹l|
+"Ÿ<“¯AH42}z8p;m€u1Ž-¦eh»Od¼Âwµª7x{5�CqEx©=;¦¢e¢º»2£Š ‚«*BP Mš"
@@ -0,0 +1,42 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_conf.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Library configuration file.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V20x_CONF_H
#define __CH32V20x_CONF_H
#include "ch32v20x_adc.h"
#include "ch32v20x_bkp.h"
#include "ch32v20x_can.h"
#include "ch32v20x_crc.h"
#include "ch32v20x_dbgmcu.h"
#include "ch32v20x_dma.h"
#include "ch32v20x_exti.h"
#include "ch32v20x_flash.h"
#include "ch32v20x_gpio.h"
#include "ch32v20x_i2c.h"
#include "ch32v20x_iwdg.h"
#include "ch32v20x_pwr.h"
#include "ch32v20x_rcc.h"
#include "ch32v20x_rtc.h"
#include "ch32v20x_spi.h"
#include "ch32v20x_tim.h"
#include "ch32v20x_usart.h"
#include "ch32v20x_wwdg.h"
#include "ch32v20x_it.h"
#include "ch32v20x_misc.h"
#endif /* __CH32V20x_CONF_H */
@@ -0,0 +1,42 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_it.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main Interrupt Service Routines.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x_it.h"
void NMI_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void HardFault_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
/*********************************************************************
* @fn NMI_Handler
*
* @brief This function handles NMI exception.
*
* @return none
*/
void NMI_Handler(void)
{
}
/*********************************************************************
* @fn HardFault_Handler
*
* @brief This function handles Hard Fault exception.
*
* @return none
*/
void HardFault_Handler(void)
{
while (1)
{
}
}
@@ -0,0 +1,20 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_it.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : This file contains the headers of the interrupt handlers.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V20x_IT_H
#define __CH32V20x_IT_H
#include "debug.h"
#endif /* __CH32V20x_IT_H */
+79
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@@ -0,0 +1,79 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : main.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main program body.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
/*
*@Note
low power, standby mode routine:
WKUP(PA0)
This routine demonstrates that WFI enters the standby mode, the rising edge of
the WKUP (PA0) pin exits the standby mode,Program reset after wake-up.
Note: In order to reduce power consumption as much as possible, it is
recommended to set the unused GPIO to pull-down mode.
*/
#include "debug.h"
/* Global define */
/* Global Variable */
/*********************************************************************
* @fn main
*
* @brief Main program.
*
* @return none
*/
int main(void)
{
GPIO_InitTypeDef GPIO_InitStructure = {0};
/* 为降低功耗,需将不用的GPIO设置成下拉输入 */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|
RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_Init(GPIOE, &GPIO_InitStructure);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
Delay_Init();
USART_Printf_Init(115200);
printf("SystemClk:%d\r\n", SystemCoreClock);
printf("Standby Mode Test\r\n");
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
if(PWR_GetFlagStatus(PWR_FLAG_WU) == SET)
{
printf("\r\n Standby wake up reset \r\n");
}
else
{
printf("\r\n Power on reset \r\n");
PWR_WakeUpPinCmd(ENABLE);
PWR_EnterSTANDBYMode();
}
printf("\r\n ########## \r\n");
while(1)
{
Delay_Ms(1000);
printf("Run in main\r\n");
}
}
@@ -0,0 +1,986 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : system_ch32v20x.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : CH32V20x Device Peripheral Access Layer System Source File.
* For HSE = 32Mhz (CH32V208x/CH32V203RBT6)
* For HSE = 8Mhz (other CH32V203x)
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x.h"
/*
* Uncomment the line corresponding to the desired System clock (SYSCLK) frequency (after
* reset the HSI is used as SYSCLK source).
* If none of the define below is enabled, the HSI is used as System clock source.
*/
//#define SYSCLK_FREQ_HSE HSE_VALUE
//#define SYSCLK_FREQ_48MHz_HSE 48000000
//#define SYSCLK_FREQ_56MHz_HSE 56000000
//#define SYSCLK_FREQ_72MHz_HSE 72000000
#define SYSCLK_FREQ_96MHz_HSE 96000000
//#define SYSCLK_FREQ_120MHz_HSE 120000000
//#define SYSCLK_FREQ_144MHz_HSE 144000000
//#define SYSCLK_FREQ_HSI HSI_VALUE
//#define SYSCLK_FREQ_48MHz_HSI 48000000
//#define SYSCLK_FREQ_56MHz_HSI 56000000
//#define SYSCLK_FREQ_72MHz_HSI 72000000
//#define SYSCLK_FREQ_96MHz_HSI 96000000
//#define SYSCLK_FREQ_120MHz_HSI 120000000
//#define SYSCLK_FREQ_144MHz_HSI 144000000
/* Clock Definitions */
#ifdef SYSCLK_FREQ_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_48MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_56MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_72MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_96MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_96MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_120MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_120MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_144MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_144MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_48MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_56MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_72MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_96MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_96MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_120MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_120MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_144MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_144MHz_HSI; /* System Clock Frequency (Core Clock) */
#else
uint32_t SystemCoreClock = HSI_VALUE; /* System Clock Frequency (Core Clock) */
#endif
__I uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
/* system_private_function_proto_types */
static void SetSysClock(void);
#ifdef SYSCLK_FREQ_HSE
static void SetSysClockToHSE( void );
#elif defined SYSCLK_FREQ_48MHz_HSE
static void SetSysClockTo48_HSE( void );
#elif defined SYSCLK_FREQ_56MHz_HSE
static void SetSysClockTo56_HSE( void );
#elif defined SYSCLK_FREQ_72MHz_HSE
static void SetSysClockTo72_HSE( void );
#elif defined SYSCLK_FREQ_96MHz_HSE
static void SetSysClockTo96_HSE( void );
#elif defined SYSCLK_FREQ_120MHz_HSE
static void SetSysClockTo120_HSE( void );
#elif defined SYSCLK_FREQ_144MHz_HSE
static void SetSysClockTo144_HSE( void );
#elif defined SYSCLK_FREQ_48MHz_HSI
static void SetSysClockTo48_HSI( void );
#elif defined SYSCLK_FREQ_56MHz_HSI
static void SetSysClockTo56_HSI( void );
#elif defined SYSCLK_FREQ_72MHz_HSI
static void SetSysClockTo72_HSI( void );
#elif defined SYSCLK_FREQ_96MHz_HSI
static void SetSysClockTo96_HSI( void );
#elif defined SYSCLK_FREQ_120MHz_HSI
static void SetSysClockTo120_HSI( void );
#elif defined SYSCLK_FREQ_144MHz_HSI
static void SetSysClockTo144_HSI( void );
#endif
/*********************************************************************
* @fn SystemInit
*
* @brief Setup the microcontroller system Initialize the Embedded Flash Interface,
* the PLL and update the SystemCoreClock variable.
*
* @return none
*/
void SystemInit (void)
{
RCC->CTLR |= (uint32_t)0x00000001;
RCC->CFGR0 &= (uint32_t)0xF8FF0000;
RCC->CTLR &= (uint32_t)0xFEF6FFFF;
RCC->CTLR &= (uint32_t)0xFFFBFFFF;
RCC->CFGR0 &= (uint32_t)0xFF80FFFF;
RCC->INTR = 0x009F0000;
SetSysClock();
}
/*********************************************************************
* @fn SystemCoreClockUpdate
*
* @brief Update SystemCoreClock variable according to Clock Register Values.
*
* @return none
*/
void SystemCoreClockUpdate (void)
{
uint32_t tmp = 0, pllmull = 0, pllsource = 0, Pll_6_5 = 0;
tmp = RCC->CFGR0 & RCC_SWS;
switch (tmp)
{
case 0x00:
SystemCoreClock = HSI_VALUE;
break;
case 0x04:
SystemCoreClock = HSE_VALUE;
break;
case 0x08:
pllmull = RCC->CFGR0 & RCC_PLLMULL;
pllsource = RCC->CFGR0 & RCC_PLLSRC;
pllmull = ( pllmull >> 18) + 2;
if(pllmull == 17) pllmull = 18;
if (pllsource == 0x00)
{
if(EXTEN->EXTEN_CTR & EXTEN_PLL_HSI_PRE){
SystemCoreClock = HSI_VALUE * pllmull;
}
else{
SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
}
}
else
{
#if defined (CH32V20x_D8W)
if((RCC->CFGR0 & (3<<22)) == (3<<22))
{
SystemCoreClock = ((HSE_VALUE>>1)) * pllmull;
}
else
#endif
if ((RCC->CFGR0 & RCC_PLLXTPRE) != (uint32_t)RESET)
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = ((HSE_VALUE>>2) >> 1) * pllmull;
#else
SystemCoreClock = (HSE_VALUE >> 1) * pllmull;
#endif
}
else
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = (HSE_VALUE>>2) * pllmull;
#else
SystemCoreClock = HSE_VALUE * pllmull;
#endif
}
}
if(Pll_6_5 == 1) SystemCoreClock = (SystemCoreClock / 2);
break;
default:
SystemCoreClock = HSI_VALUE;
break;
}
tmp = AHBPrescTable[((RCC->CFGR0 & RCC_HPRE) >> 4)];
SystemCoreClock >>= tmp;
}
/*********************************************************************
* @fn SetSysClock
*
* @brief Configures the System clock frequency, HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClock(void)
{
#ifdef SYSCLK_FREQ_HSE
SetSysClockToHSE();
#elif defined SYSCLK_FREQ_48MHz_HSE
SetSysClockTo48_HSE();
#elif defined SYSCLK_FREQ_56MHz_HSE
SetSysClockTo56_HSE();
#elif defined SYSCLK_FREQ_72MHz_HSE
SetSysClockTo72_HSE();
#elif defined SYSCLK_FREQ_96MHz_HSE
SetSysClockTo96_HSE();
#elif defined SYSCLK_FREQ_120MHz_HSE
SetSysClockTo120_HSE();
#elif defined SYSCLK_FREQ_144MHz_HSE
SetSysClockTo144_HSE();
#elif defined SYSCLK_FREQ_48MHz_HSI
SetSysClockTo48_HSI();
#elif defined SYSCLK_FREQ_56MHz_HSI
SetSysClockTo56_HSI();
#elif defined SYSCLK_FREQ_72MHz_HSI
SetSysClockTo72_HSI();
#elif defined SYSCLK_FREQ_96MHz_HSI
SetSysClockTo96_HSI();
#elif defined SYSCLK_FREQ_120MHz_HSI
SetSysClockTo120_HSI();
#elif defined SYSCLK_FREQ_144MHz_HSI
SetSysClockTo144_HSI();
#endif
/* If none of the define above is enabled, the HSI is used as System clock
* source (default after reset)
*/
}
#ifdef SYSCLK_FREQ_HSE
/*********************************************************************
* @fn SetSysClockToHSE
*
* @brief Sets HSE as System clock source and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockToHSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV1;
/* Select HSE as system clock source
* CH32V20x_D6 (HSE=8MHZ)
* CH32V20x_D8 (HSE=32MHZ)
* CH32V20x_D8W (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_HSE;
/* Wait till HSE is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x04)
{
}
}
else
{
/* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_48MHz_HSE
/*********************************************************************
* @fn SetSysClockTo48_HSE
*
* @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo48_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 6 = 48 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 6 = 48 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 6 = 48 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL6);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_56MHz_HSE
/*********************************************************************
* @fn SetSysClockTo56_HSE
*
* @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo56_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 7 = 56 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 7 = 56 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 7 = 56 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL7);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_72MHz_HSE
/*********************************************************************
* @fn SetSysClockTo72_HSE
*
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo72_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 9 = 72 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 9 = 72 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 9 = 72 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL9);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_96MHz_HSE
/*********************************************************************
* @fn SetSysClockTo96_HSE
*
* @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo96_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 12 = 96 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL12);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_120MHz_HSE
/*********************************************************************
* @fn SetSysClockTo120_HSE
*
* @brief Sets System clock frequency to 120MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo120_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if(HSEStatus == (uint32_t)0x01)
{
#if defined (CH32V20x_D8W)
RCC->CFGR0 |= (uint32_t)(3<<22);
/* HCLK = SYSCLK/2 */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV2;
#else
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
#endif
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 15 = 120 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 15 = 120 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/2 * 15 = 240 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL15);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_144MHz_HSE
/*********************************************************************
* @fn SetSysClockTo144_HSE
*
* @brief Sets System clock frequency to 144MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo144_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 18 = 144 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 18 = 144 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 18 = 144 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_48MHz_HSI
/*********************************************************************
* @fn SetSysClockTo48_HSI
*
* @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo48_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 6 = 48 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL6);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_56MHz_HSI
/*********************************************************************
* @fn SetSysClockTo56_HSI
*
* @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo56_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 7 = 48 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL7);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_72MHz_HSI
/*********************************************************************
* @fn SetSysClockTo72_HSI
*
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo72_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 9 = 72 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL9);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_96MHz_HSI
/*********************************************************************
* @fn SetSysClockTo96_HSI
*
* @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo96_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 12 = 96 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL12);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_120MHz_HSI
/*********************************************************************
* @fn SetSysClockTo120_HSI
*
* @brief Sets System clock frequency to 120MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo120_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 15 = 120 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL15);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_144MHz_HSI
/*********************************************************************
* @fn SetSysClockTo144_HSI
*
* @brief Sets System clock frequency to 144MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo144_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 18 = 144 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#endif
@@ -0,0 +1,32 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : system_ch32v20x.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : CH32V20x Device Peripheral Access Layer System Header File.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __SYSTEM_ch32v20x_H
#define __SYSTEM_ch32v20x_H
#ifdef __cplusplus
extern "C" {
#endif
extern uint32_t SystemCoreClock; /* System Clock Frequency (Core Clock) */
/* System_Exported_Functions */
extern void SystemInit(void);
extern void SystemCoreClockUpdate(void);
#ifdef __cplusplus
}
#endif
#endif /*__CH32V20x_SYSTEM_H */
+143
View File
@@ -0,0 +1,143 @@
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View File
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<projectDescription>
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Mcu Type=CH32V20x
Address=0x08000000
Target Path=obj/Standby_RAM_LV_Mode.hex
Erase All=true
Program=true
Verify=true
Reset=true
Vendor=WCH
Link=WCH-Link
Toolchain=RISC-V
Series=CH32V203
Description=ROM(byte): 64K, SRAM(byte): 20K, CHIP PINS: 32, GPIO PORTS: 27.\nWCH CH32V2 series of mainstream MCUs covers the needs of a large variety of applications in the industrial,medical and consumer markets. High performance with first-class peripherals and low-power,low-voltage operation is paired with a high level of integration at accessible prices with a simple architecture and easy-to-use tools.
PeripheralVersion=1.0
MCU=CH32V203RBT6
@@ -0,0 +1,2 @@
�i“CZ ?"Ç�¸rŸ�F<Fy8E9Y‡½„%Pa³D¶La† %Ã'y€¡]Ç;’¶ŸS)1†1+R4><‚.„ÇÅ¿º°?/£XO©Ä¿ChQN$*¢”»EÅBk‹!2tŒ+buh†nUb]xl‹l|
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@@ -0,0 +1,42 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_conf.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Library configuration file.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V20x_CONF_H
#define __CH32V20x_CONF_H
#include "ch32v20x_adc.h"
#include "ch32v20x_bkp.h"
#include "ch32v20x_can.h"
#include "ch32v20x_crc.h"
#include "ch32v20x_dbgmcu.h"
#include "ch32v20x_dma.h"
#include "ch32v20x_exti.h"
#include "ch32v20x_flash.h"
#include "ch32v20x_gpio.h"
#include "ch32v20x_i2c.h"
#include "ch32v20x_iwdg.h"
#include "ch32v20x_pwr.h"
#include "ch32v20x_rcc.h"
#include "ch32v20x_rtc.h"
#include "ch32v20x_spi.h"
#include "ch32v20x_tim.h"
#include "ch32v20x_usart.h"
#include "ch32v20x_wwdg.h"
#include "ch32v20x_it.h"
#include "ch32v20x_misc.h"
#endif /* __CH32V20x_CONF_H */
@@ -0,0 +1,59 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_it.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main Interrupt Service Routines.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x_it.h"
void NMI_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void HardFault_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void EXTI2_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
/*********************************************************************
* @fn NMI_Handler
*
* @brief This function handles NMI exception.
*
* @return none
*/
void NMI_Handler(void)
{
}
/*********************************************************************
* @fn HardFault_Handler
*
* @brief This function handles Hard Fault exception.
*
* @return none
*/
void HardFault_Handler(void)
{
while (1)
{
}
}
/*********************************************************************
* @fn EXTI2_IRQHandler
*
* @brief This function handles EXTI2 exception.
*
* @return none
*/
void EXTI2_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line2)!=RESET)
{
SystemInit();
printf("EXTI2 Wake_up\r\n");
EXTI_ClearITPendingBit(EXTI_Line2); /* Clear Flag */
}
}
@@ -0,0 +1,20 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_it.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : This file contains the headers of the interrupt handlers.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V20x_IT_H
#define __CH32V20x_IT_H
#include "debug.h"
#endif /* __CH32V20x_IT_H */
@@ -0,0 +1,130 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : main.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main program body.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
/*
*@Note
when LV is enabled in standby mode, RAM 2k and 30K low-power data holding routines:
This routine demonstrates writing data at the specified location of 2K RAM and 30K RAM,
then WFI enters STANDBY sleep mode and turns on LV,Input high level through PA0 (wakeup) pin
to exit standby mode, print RAM data after waking up, and test whether RAM holds data.
*/
#include "debug.h"
/* Global define */
/* Global Variable */
/*********************************************************************
* @fn TestDataWrite
*
* @brief Write 0x11111111 to certain address of 2K RAM and 30K RAM.
*
* @return none
*/
void TestDataWrite(void)
{
uint32_t myAddr = 0x20000000 + 10 * 1024;
uint32_t myAddr2 = 0x20000000 + 1 * 1024 + 512;
uint32_t i = 0;
for(i = 0; i < 1024; i++) //Write 30K RAM
{
*(uint32_t volatile *)(myAddr + (i << 2)) = 0x44444444;
}
for(i = 0; i < 1024; i++) //Check 30K RAM
{
if((*(uint32_t volatile *)(myAddr + (i << 2))) != 0x44444444)
{
printf("Write 30K RAM Error!\r\n");
break;
}
}
printf("Write 30K RAM Successfully!\r\n");
for(i = 0; i < 10; i++) //Write 2K RAM
{
*(uint32_t volatile *)(myAddr2 + (i << 2)) = 0x44444444;
}
for(i = 0; i < 10; i++) //Check 30K RAM
{
if((*(uint32_t volatile *)(myAddr2 + (i << 2))) != 0x44444444)
{
printf("Write 2K RAM Error!\r\n");
break;
}
}
printf("Write 2K RAM Successfully!\r\n");
}
/*********************************************************************
* @fn TestDataRead
*
* @brief Print the data of certain address of 2K RAM and 30K RAM.
*
* @return none
*/
void TestDataRead(void)
{
uint32_t myAddr = 0x20000000 + 10 * 1024;
uint32_t myAddr2 = 0x20000000 + 1 * 1024 + 512;
uint32_t i = 0;
printf("2K RAM:\r\n");
for(i = 0; i < 10; i++){
printf("0x%08lx=0x%08lx\r\n", myAddr2 + (i << 2), *(uint32_t volatile *)(myAddr2 + (i << 2)));
}
printf("32K RAM:\r\n");
for(i = 0; i < 1024; i++){
printf("0x%08lx=0x%08lx\r\n", myAddr + (i << 2), *(uint32_t volatile *)(myAddr + (i << 2)));
}
}
/*********************************************************************
* @fn main
*
* @brief Main program.
*
* @return none
*/
int main(void)
{
GPIO_InitTypeDef GPIO_InitStructure = {0};
/* Configure unused GPIO as IPD to reduce power consumption */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|
RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_Init(GPIOE, &GPIO_InitStructure);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
Delay_Init();
USART_Printf_Init(115200);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
/* Delay 1.5s to avoid entering low power mode immediately after reset*/
Delay_Ms(1500);
while(1)
{
TestDataRead();
printf("4.Standby Mode RAM LV Test\r\n");
TestDataWrite();
PWR_WakeUpPinCmd(ENABLE);
PWR_EnterSTANDBYMode_RAM_LV();
printf("\r\n4.Out \r\n");
printf("\r\n ########## \r\n");
}
}
@@ -0,0 +1,986 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : system_ch32v20x.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : CH32V20x Device Peripheral Access Layer System Source File.
* For HSE = 32Mhz (CH32V208x/CH32V203RBT6)
* For HSE = 8Mhz (other CH32V203x)
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x.h"
/*
* Uncomment the line corresponding to the desired System clock (SYSCLK) frequency (after
* reset the HSI is used as SYSCLK source).
* If none of the define below is enabled, the HSI is used as System clock source.
*/
//#define SYSCLK_FREQ_HSE HSE_VALUE
//#define SYSCLK_FREQ_48MHz_HSE 48000000
//#define SYSCLK_FREQ_56MHz_HSE 56000000
//#define SYSCLK_FREQ_72MHz_HSE 72000000
#define SYSCLK_FREQ_96MHz_HSE 96000000
//#define SYSCLK_FREQ_120MHz_HSE 120000000
//#define SYSCLK_FREQ_144MHz_HSE 144000000
//#define SYSCLK_FREQ_HSI HSI_VALUE
//#define SYSCLK_FREQ_48MHz_HSI 48000000
//#define SYSCLK_FREQ_56MHz_HSI 56000000
//#define SYSCLK_FREQ_72MHz_HSI 72000000
//#define SYSCLK_FREQ_96MHz_HSI 96000000
//#define SYSCLK_FREQ_120MHz_HSI 120000000
//#define SYSCLK_FREQ_144MHz_HSI 144000000
/* Clock Definitions */
#ifdef SYSCLK_FREQ_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_48MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_56MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_72MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_96MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_96MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_120MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_120MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_144MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_144MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_48MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_56MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_72MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_96MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_96MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_120MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_120MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_144MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_144MHz_HSI; /* System Clock Frequency (Core Clock) */
#else
uint32_t SystemCoreClock = HSI_VALUE; /* System Clock Frequency (Core Clock) */
#endif
__I uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
/* system_private_function_proto_types */
static void SetSysClock(void);
#ifdef SYSCLK_FREQ_HSE
static void SetSysClockToHSE( void );
#elif defined SYSCLK_FREQ_48MHz_HSE
static void SetSysClockTo48_HSE( void );
#elif defined SYSCLK_FREQ_56MHz_HSE
static void SetSysClockTo56_HSE( void );
#elif defined SYSCLK_FREQ_72MHz_HSE
static void SetSysClockTo72_HSE( void );
#elif defined SYSCLK_FREQ_96MHz_HSE
static void SetSysClockTo96_HSE( void );
#elif defined SYSCLK_FREQ_120MHz_HSE
static void SetSysClockTo120_HSE( void );
#elif defined SYSCLK_FREQ_144MHz_HSE
static void SetSysClockTo144_HSE( void );
#elif defined SYSCLK_FREQ_48MHz_HSI
static void SetSysClockTo48_HSI( void );
#elif defined SYSCLK_FREQ_56MHz_HSI
static void SetSysClockTo56_HSI( void );
#elif defined SYSCLK_FREQ_72MHz_HSI
static void SetSysClockTo72_HSI( void );
#elif defined SYSCLK_FREQ_96MHz_HSI
static void SetSysClockTo96_HSI( void );
#elif defined SYSCLK_FREQ_120MHz_HSI
static void SetSysClockTo120_HSI( void );
#elif defined SYSCLK_FREQ_144MHz_HSI
static void SetSysClockTo144_HSI( void );
#endif
/*********************************************************************
* @fn SystemInit
*
* @brief Setup the microcontroller system Initialize the Embedded Flash Interface,
* the PLL and update the SystemCoreClock variable.
*
* @return none
*/
void SystemInit (void)
{
RCC->CTLR |= (uint32_t)0x00000001;
RCC->CFGR0 &= (uint32_t)0xF8FF0000;
RCC->CTLR &= (uint32_t)0xFEF6FFFF;
RCC->CTLR &= (uint32_t)0xFFFBFFFF;
RCC->CFGR0 &= (uint32_t)0xFF80FFFF;
RCC->INTR = 0x009F0000;
SetSysClock();
}
/*********************************************************************
* @fn SystemCoreClockUpdate
*
* @brief Update SystemCoreClock variable according to Clock Register Values.
*
* @return none
*/
void SystemCoreClockUpdate (void)
{
uint32_t tmp = 0, pllmull = 0, pllsource = 0, Pll_6_5 = 0;
tmp = RCC->CFGR0 & RCC_SWS;
switch (tmp)
{
case 0x00:
SystemCoreClock = HSI_VALUE;
break;
case 0x04:
SystemCoreClock = HSE_VALUE;
break;
case 0x08:
pllmull = RCC->CFGR0 & RCC_PLLMULL;
pllsource = RCC->CFGR0 & RCC_PLLSRC;
pllmull = ( pllmull >> 18) + 2;
if(pllmull == 17) pllmull = 18;
if (pllsource == 0x00)
{
if(EXTEN->EXTEN_CTR & EXTEN_PLL_HSI_PRE){
SystemCoreClock = HSI_VALUE * pllmull;
}
else{
SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
}
}
else
{
#if defined (CH32V20x_D8W)
if((RCC->CFGR0 & (3<<22)) == (3<<22))
{
SystemCoreClock = ((HSE_VALUE>>1)) * pllmull;
}
else
#endif
if ((RCC->CFGR0 & RCC_PLLXTPRE) != (uint32_t)RESET)
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = ((HSE_VALUE>>2) >> 1) * pllmull;
#else
SystemCoreClock = (HSE_VALUE >> 1) * pllmull;
#endif
}
else
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = (HSE_VALUE>>2) * pllmull;
#else
SystemCoreClock = HSE_VALUE * pllmull;
#endif
}
}
if(Pll_6_5 == 1) SystemCoreClock = (SystemCoreClock / 2);
break;
default:
SystemCoreClock = HSI_VALUE;
break;
}
tmp = AHBPrescTable[((RCC->CFGR0 & RCC_HPRE) >> 4)];
SystemCoreClock >>= tmp;
}
/*********************************************************************
* @fn SetSysClock
*
* @brief Configures the System clock frequency, HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClock(void)
{
#ifdef SYSCLK_FREQ_HSE
SetSysClockToHSE();
#elif defined SYSCLK_FREQ_48MHz_HSE
SetSysClockTo48_HSE();
#elif defined SYSCLK_FREQ_56MHz_HSE
SetSysClockTo56_HSE();
#elif defined SYSCLK_FREQ_72MHz_HSE
SetSysClockTo72_HSE();
#elif defined SYSCLK_FREQ_96MHz_HSE
SetSysClockTo96_HSE();
#elif defined SYSCLK_FREQ_120MHz_HSE
SetSysClockTo120_HSE();
#elif defined SYSCLK_FREQ_144MHz_HSE
SetSysClockTo144_HSE();
#elif defined SYSCLK_FREQ_48MHz_HSI
SetSysClockTo48_HSI();
#elif defined SYSCLK_FREQ_56MHz_HSI
SetSysClockTo56_HSI();
#elif defined SYSCLK_FREQ_72MHz_HSI
SetSysClockTo72_HSI();
#elif defined SYSCLK_FREQ_96MHz_HSI
SetSysClockTo96_HSI();
#elif defined SYSCLK_FREQ_120MHz_HSI
SetSysClockTo120_HSI();
#elif defined SYSCLK_FREQ_144MHz_HSI
SetSysClockTo144_HSI();
#endif
/* If none of the define above is enabled, the HSI is used as System clock
* source (default after reset)
*/
}
#ifdef SYSCLK_FREQ_HSE
/*********************************************************************
* @fn SetSysClockToHSE
*
* @brief Sets HSE as System clock source and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockToHSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV1;
/* Select HSE as system clock source
* CH32V20x_D6 (HSE=8MHZ)
* CH32V20x_D8 (HSE=32MHZ)
* CH32V20x_D8W (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_HSE;
/* Wait till HSE is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x04)
{
}
}
else
{
/* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_48MHz_HSE
/*********************************************************************
* @fn SetSysClockTo48_HSE
*
* @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo48_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 6 = 48 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 6 = 48 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 6 = 48 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL6);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_56MHz_HSE
/*********************************************************************
* @fn SetSysClockTo56_HSE
*
* @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo56_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 7 = 56 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 7 = 56 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 7 = 56 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL7);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_72MHz_HSE
/*********************************************************************
* @fn SetSysClockTo72_HSE
*
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo72_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 9 = 72 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 9 = 72 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 9 = 72 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL9);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_96MHz_HSE
/*********************************************************************
* @fn SetSysClockTo96_HSE
*
* @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo96_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 12 = 96 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL12);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_120MHz_HSE
/*********************************************************************
* @fn SetSysClockTo120_HSE
*
* @brief Sets System clock frequency to 120MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo120_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if(HSEStatus == (uint32_t)0x01)
{
#if defined (CH32V20x_D8W)
RCC->CFGR0 |= (uint32_t)(3<<22);
/* HCLK = SYSCLK/2 */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV2;
#else
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
#endif
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 15 = 120 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 15 = 120 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/2 * 15 = 240 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL15);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_144MHz_HSE
/*********************************************************************
* @fn SetSysClockTo144_HSE
*
* @brief Sets System clock frequency to 144MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo144_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 18 = 144 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 18 = 144 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 18 = 144 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_48MHz_HSI
/*********************************************************************
* @fn SetSysClockTo48_HSI
*
* @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo48_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 6 = 48 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL6);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_56MHz_HSI
/*********************************************************************
* @fn SetSysClockTo56_HSI
*
* @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo56_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 7 = 48 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL7);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_72MHz_HSI
/*********************************************************************
* @fn SetSysClockTo72_HSI
*
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo72_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 9 = 72 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL9);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_96MHz_HSI
/*********************************************************************
* @fn SetSysClockTo96_HSI
*
* @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo96_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 12 = 96 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL12);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_120MHz_HSI
/*********************************************************************
* @fn SetSysClockTo120_HSI
*
* @brief Sets System clock frequency to 120MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo120_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 15 = 120 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL15);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_144MHz_HSI
/*********************************************************************
* @fn SetSysClockTo144_HSI
*
* @brief Sets System clock frequency to 144MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo144_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 18 = 144 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#endif
@@ -0,0 +1,32 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : system_ch32v20x.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : CH32V20x Device Peripheral Access Layer System Header File.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __SYSTEM_ch32v20x_H
#define __SYSTEM_ch32v20x_H
#ifdef __cplusplus
extern "C" {
#endif
extern uint32_t SystemCoreClock; /* System Clock Frequency (Core Clock) */
/* System_Exported_Functions */
extern void SystemInit(void);
extern void SystemCoreClockUpdate(void);
#ifdef __cplusplus
}
#endif
#endif /*__CH32V20x_SYSTEM_H */
+143
View File
@@ -0,0 +1,143 @@
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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+16
View File
@@ -0,0 +1,16 @@
Mcu Type=CH32V20x
Address=0x08000000
Target Path=obj/Standby_RAM_Mode.hex
Erase All=true
Program=true
Verify=true
Reset=true
Vendor=WCH
Link=WCH-Link
Toolchain=RISC-V
Series=CH32V203
Description=ROM(byte): 64K, SRAM(byte): 20K, CHIP PINS: 32, GPIO PORTS: 27.\nWCH CH32V2 series of mainstream MCUs covers the needs of a large variety of applications in the industrial,medical and consumer markets. High performance with first-class peripherals and low-power,low-voltage operation is paired with a high level of integration at accessible prices with a simple architecture and easy-to-use tools.
PeripheralVersion=1.0
MCU=CH32V203RBT6
@@ -0,0 +1,2 @@
�i“CZ ?"Ç�¸rŸ�F<Fy8E9Y‡½„%Pa³D¶La† %Ã'y€¡]Ç;’¶ŸS)1†1+R4><‚.„ÇÅ¿º°?/£XO©Ä¿ChQN$*¢”»EÅBk‹!2tŒ+buh†nUb]xl‹l|
+"Ÿ<“¯AH42}z8p;m€u1Ž-¦eh»Od¼Âwµª7x{5�CqEx©=;¦¢e¢º»2£Š ‚«*BP Mš"
@@ -0,0 +1,42 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_conf.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Library configuration file.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V20x_CONF_H
#define __CH32V20x_CONF_H
#include "ch32v20x_adc.h"
#include "ch32v20x_bkp.h"
#include "ch32v20x_can.h"
#include "ch32v20x_crc.h"
#include "ch32v20x_dbgmcu.h"
#include "ch32v20x_dma.h"
#include "ch32v20x_exti.h"
#include "ch32v20x_flash.h"
#include "ch32v20x_gpio.h"
#include "ch32v20x_i2c.h"
#include "ch32v20x_iwdg.h"
#include "ch32v20x_pwr.h"
#include "ch32v20x_rcc.h"
#include "ch32v20x_rtc.h"
#include "ch32v20x_spi.h"
#include "ch32v20x_tim.h"
#include "ch32v20x_usart.h"
#include "ch32v20x_wwdg.h"
#include "ch32v20x_it.h"
#include "ch32v20x_misc.h"
#endif /* __CH32V20x_CONF_H */
@@ -0,0 +1,59 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_it.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main Interrupt Service Routines.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x_it.h"
void NMI_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void HardFault_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void EXTI2_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
/*********************************************************************
* @fn NMI_Handler
*
* @brief This function handles NMI exception.
*
* @return none
*/
void NMI_Handler(void)
{
}
/*********************************************************************
* @fn HardFault_Handler
*
* @brief This function handles Hard Fault exception.
*
* @return none
*/
void HardFault_Handler(void)
{
while (1)
{
}
}
/*********************************************************************
* @fn EXTI2_IRQHandler
*
* @brief This function handles EXTI2 exception.
*
* @return none
*/
void EXTI2_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line2)!=RESET)
{
SystemInit();
printf("EXTI2 Wake_up\r\n");
EXTI_ClearITPendingBit(EXTI_Line2); /* Clear Flag */
}
}
@@ -0,0 +1,20 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_it.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : This file contains the headers of the interrupt handlers.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V20x_IT_H
#define __CH32V20x_IT_H
#include "debug.h"
#endif /* __CH32V20x_IT_H */
+138
View File
@@ -0,0 +1,138 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : main.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main program body.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
/*
*@Note
when LV is not enabled in standby mode, RAM 2k and 30K low-power data holding routines:
This routine demonstrates writing data at the specified location of 2K RAM and 30K RAM,
and then WFI enters STANDBY sleep mode, through the PA0 (wakeup) pin Input high level
to exit standby mode, print RAM data after waking up, and test whether RAM is maintained
data.
*/
#include "debug.h"
/* Global define */
/* Global Variable */
/*********************************************************************
* @fn TestDataWrite
*
* @brief Write 0x11111111 to certain address of 2K RAM and 30K RAM.
*
* @return none
*/
void TestDataWrite(void)
{
uint32_t myAddr=0x20000000+10*1024;
uint32_t myAddr2=0x20000000+1*1024+512;
uint32_t i=0;
for(i=0;i<1024;i++)//Write 30K RAM
{
*(uint32_t volatile *)(myAddr+(i<<2)) = 0x33333333;
}
for(i=0;i<1024;i++)//Check 30K RAM
{
if((*(uint32_t volatile *)(myAddr+(i<<2))) != 0x33333333)
{
printf("Write 30K RAM Error!\r\n");
break;
}
}
printf("Write 30K RAM Successfully!\r\n");
for(i=0;i<10;i++)//Write 2K RAM
{
*(uint32_t volatile *)(myAddr2+(i<<2)) = 0x33333333;
}
for(i=0;i<10;i++)//Check 30K RAM
{
if((*(uint32_t volatile *)(myAddr2+(i<<2))) != 0x33333333)
{
printf("Write 2K RAM Error!\r\n");
break;
}
}
printf("Write 2K RAM Successfully!\r\n");
}
/*********************************************************************
* @fn TestDataRead
*
* @brief Print the data of certain address of 2K RAM and 30K RAM.
*
* @return none
*/
void TestDataRead(void)
{
uint32_t myAddr=0x20000000+10*1024;
uint32_t myAddr2=0x20000000+1*1024+512;
uint32_t i=0;
printf("2K RAM:\r\n");
for(i=0;i<10;i++)
{
printf("0x%08lx=0x%08lx\r\n",myAddr2+(i<<2),*(uint32_t volatile *)(myAddr2+(i<<2)));
}
printf("32K RAM:\r\n");
for(i=0;i<1024;i++)
{
printf("0x%08lx=0x%08lx\r\n",myAddr+(i<<2),*(uint32_t volatile *)(myAddr+(i<<2)));
}
}
/*********************************************************************
* @fn main
*
* @brief Main program.
*
* @return none
*/
int main(void)
{
GPIO_InitTypeDef GPIO_InitStructure={0};
/* Configure unused GPIO as IPD to reduce power consumption */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|
RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_Init(GPIOE, &GPIO_InitStructure);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
Delay_Init();
USART_Printf_Init(115200);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
/* Delay 1.5s to avoid entering low power mode immediately after reset*/
Delay_Ms(1500);
while(1)
{
TestDataRead();
printf("3.Stop RAM LV Mode Test\r\n");
TestDataWrite();
PWR_WakeUpPinCmd(ENABLE);
PWR_EnterSTANDBYMode_RAM();
printf("\r\n3.Out \r\n");
printf("\r\n ########## \r\n");
}
}
@@ -0,0 +1,986 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : system_ch32v20x.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : CH32V20x Device Peripheral Access Layer System Source File.
* For HSE = 32Mhz (CH32V208x/CH32V203RBT6)
* For HSE = 8Mhz (other CH32V203x)
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x.h"
/*
* Uncomment the line corresponding to the desired System clock (SYSCLK) frequency (after
* reset the HSI is used as SYSCLK source).
* If none of the define below is enabled, the HSI is used as System clock source.
*/
//#define SYSCLK_FREQ_HSE HSE_VALUE
//#define SYSCLK_FREQ_48MHz_HSE 48000000
//#define SYSCLK_FREQ_56MHz_HSE 56000000
//#define SYSCLK_FREQ_72MHz_HSE 72000000
#define SYSCLK_FREQ_96MHz_HSE 96000000
//#define SYSCLK_FREQ_120MHz_HSE 120000000
//#define SYSCLK_FREQ_144MHz_HSE 144000000
//#define SYSCLK_FREQ_HSI HSI_VALUE
//#define SYSCLK_FREQ_48MHz_HSI 48000000
//#define SYSCLK_FREQ_56MHz_HSI 56000000
//#define SYSCLK_FREQ_72MHz_HSI 72000000
//#define SYSCLK_FREQ_96MHz_HSI 96000000
//#define SYSCLK_FREQ_120MHz_HSI 120000000
//#define SYSCLK_FREQ_144MHz_HSI 144000000
/* Clock Definitions */
#ifdef SYSCLK_FREQ_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_48MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_56MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_72MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_96MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_96MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_120MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_120MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_144MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_144MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_48MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_56MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_72MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_96MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_96MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_120MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_120MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_144MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_144MHz_HSI; /* System Clock Frequency (Core Clock) */
#else
uint32_t SystemCoreClock = HSI_VALUE; /* System Clock Frequency (Core Clock) */
#endif
__I uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
/* system_private_function_proto_types */
static void SetSysClock(void);
#ifdef SYSCLK_FREQ_HSE
static void SetSysClockToHSE( void );
#elif defined SYSCLK_FREQ_48MHz_HSE
static void SetSysClockTo48_HSE( void );
#elif defined SYSCLK_FREQ_56MHz_HSE
static void SetSysClockTo56_HSE( void );
#elif defined SYSCLK_FREQ_72MHz_HSE
static void SetSysClockTo72_HSE( void );
#elif defined SYSCLK_FREQ_96MHz_HSE
static void SetSysClockTo96_HSE( void );
#elif defined SYSCLK_FREQ_120MHz_HSE
static void SetSysClockTo120_HSE( void );
#elif defined SYSCLK_FREQ_144MHz_HSE
static void SetSysClockTo144_HSE( void );
#elif defined SYSCLK_FREQ_48MHz_HSI
static void SetSysClockTo48_HSI( void );
#elif defined SYSCLK_FREQ_56MHz_HSI
static void SetSysClockTo56_HSI( void );
#elif defined SYSCLK_FREQ_72MHz_HSI
static void SetSysClockTo72_HSI( void );
#elif defined SYSCLK_FREQ_96MHz_HSI
static void SetSysClockTo96_HSI( void );
#elif defined SYSCLK_FREQ_120MHz_HSI
static void SetSysClockTo120_HSI( void );
#elif defined SYSCLK_FREQ_144MHz_HSI
static void SetSysClockTo144_HSI( void );
#endif
/*********************************************************************
* @fn SystemInit
*
* @brief Setup the microcontroller system Initialize the Embedded Flash Interface,
* the PLL and update the SystemCoreClock variable.
*
* @return none
*/
void SystemInit (void)
{
RCC->CTLR |= (uint32_t)0x00000001;
RCC->CFGR0 &= (uint32_t)0xF8FF0000;
RCC->CTLR &= (uint32_t)0xFEF6FFFF;
RCC->CTLR &= (uint32_t)0xFFFBFFFF;
RCC->CFGR0 &= (uint32_t)0xFF80FFFF;
RCC->INTR = 0x009F0000;
SetSysClock();
}
/*********************************************************************
* @fn SystemCoreClockUpdate
*
* @brief Update SystemCoreClock variable according to Clock Register Values.
*
* @return none
*/
void SystemCoreClockUpdate (void)
{
uint32_t tmp = 0, pllmull = 0, pllsource = 0, Pll_6_5 = 0;
tmp = RCC->CFGR0 & RCC_SWS;
switch (tmp)
{
case 0x00:
SystemCoreClock = HSI_VALUE;
break;
case 0x04:
SystemCoreClock = HSE_VALUE;
break;
case 0x08:
pllmull = RCC->CFGR0 & RCC_PLLMULL;
pllsource = RCC->CFGR0 & RCC_PLLSRC;
pllmull = ( pllmull >> 18) + 2;
if(pllmull == 17) pllmull = 18;
if (pllsource == 0x00)
{
if(EXTEN->EXTEN_CTR & EXTEN_PLL_HSI_PRE){
SystemCoreClock = HSI_VALUE * pllmull;
}
else{
SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
}
}
else
{
#if defined (CH32V20x_D8W)
if((RCC->CFGR0 & (3<<22)) == (3<<22))
{
SystemCoreClock = ((HSE_VALUE>>1)) * pllmull;
}
else
#endif
if ((RCC->CFGR0 & RCC_PLLXTPRE) != (uint32_t)RESET)
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = ((HSE_VALUE>>2) >> 1) * pllmull;
#else
SystemCoreClock = (HSE_VALUE >> 1) * pllmull;
#endif
}
else
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = (HSE_VALUE>>2) * pllmull;
#else
SystemCoreClock = HSE_VALUE * pllmull;
#endif
}
}
if(Pll_6_5 == 1) SystemCoreClock = (SystemCoreClock / 2);
break;
default:
SystemCoreClock = HSI_VALUE;
break;
}
tmp = AHBPrescTable[((RCC->CFGR0 & RCC_HPRE) >> 4)];
SystemCoreClock >>= tmp;
}
/*********************************************************************
* @fn SetSysClock
*
* @brief Configures the System clock frequency, HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClock(void)
{
#ifdef SYSCLK_FREQ_HSE
SetSysClockToHSE();
#elif defined SYSCLK_FREQ_48MHz_HSE
SetSysClockTo48_HSE();
#elif defined SYSCLK_FREQ_56MHz_HSE
SetSysClockTo56_HSE();
#elif defined SYSCLK_FREQ_72MHz_HSE
SetSysClockTo72_HSE();
#elif defined SYSCLK_FREQ_96MHz_HSE
SetSysClockTo96_HSE();
#elif defined SYSCLK_FREQ_120MHz_HSE
SetSysClockTo120_HSE();
#elif defined SYSCLK_FREQ_144MHz_HSE
SetSysClockTo144_HSE();
#elif defined SYSCLK_FREQ_48MHz_HSI
SetSysClockTo48_HSI();
#elif defined SYSCLK_FREQ_56MHz_HSI
SetSysClockTo56_HSI();
#elif defined SYSCLK_FREQ_72MHz_HSI
SetSysClockTo72_HSI();
#elif defined SYSCLK_FREQ_96MHz_HSI
SetSysClockTo96_HSI();
#elif defined SYSCLK_FREQ_120MHz_HSI
SetSysClockTo120_HSI();
#elif defined SYSCLK_FREQ_144MHz_HSI
SetSysClockTo144_HSI();
#endif
/* If none of the define above is enabled, the HSI is used as System clock
* source (default after reset)
*/
}
#ifdef SYSCLK_FREQ_HSE
/*********************************************************************
* @fn SetSysClockToHSE
*
* @brief Sets HSE as System clock source and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockToHSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV1;
/* Select HSE as system clock source
* CH32V20x_D6 (HSE=8MHZ)
* CH32V20x_D8 (HSE=32MHZ)
* CH32V20x_D8W (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_HSE;
/* Wait till HSE is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x04)
{
}
}
else
{
/* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_48MHz_HSE
/*********************************************************************
* @fn SetSysClockTo48_HSE
*
* @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo48_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 6 = 48 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 6 = 48 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 6 = 48 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL6);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_56MHz_HSE
/*********************************************************************
* @fn SetSysClockTo56_HSE
*
* @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo56_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 7 = 56 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 7 = 56 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 7 = 56 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL7);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_72MHz_HSE
/*********************************************************************
* @fn SetSysClockTo72_HSE
*
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo72_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 9 = 72 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 9 = 72 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 9 = 72 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL9);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_96MHz_HSE
/*********************************************************************
* @fn SetSysClockTo96_HSE
*
* @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo96_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 12 = 96 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL12);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_120MHz_HSE
/*********************************************************************
* @fn SetSysClockTo120_HSE
*
* @brief Sets System clock frequency to 120MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo120_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if(HSEStatus == (uint32_t)0x01)
{
#if defined (CH32V20x_D8W)
RCC->CFGR0 |= (uint32_t)(3<<22);
/* HCLK = SYSCLK/2 */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV2;
#else
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
#endif
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 15 = 120 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 15 = 120 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/2 * 15 = 240 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL15);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_144MHz_HSE
/*********************************************************************
* @fn SetSysClockTo144_HSE
*
* @brief Sets System clock frequency to 144MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo144_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 18 = 144 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 18 = 144 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 18 = 144 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_48MHz_HSI
/*********************************************************************
* @fn SetSysClockTo48_HSI
*
* @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo48_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 6 = 48 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL6);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_56MHz_HSI
/*********************************************************************
* @fn SetSysClockTo56_HSI
*
* @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo56_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 7 = 48 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL7);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_72MHz_HSI
/*********************************************************************
* @fn SetSysClockTo72_HSI
*
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo72_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 9 = 72 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL9);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_96MHz_HSI
/*********************************************************************
* @fn SetSysClockTo96_HSI
*
* @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo96_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 12 = 96 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL12);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_120MHz_HSI
/*********************************************************************
* @fn SetSysClockTo120_HSI
*
* @brief Sets System clock frequency to 120MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo120_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 15 = 120 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL15);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_144MHz_HSI
/*********************************************************************
* @fn SetSysClockTo144_HSI
*
* @brief Sets System clock frequency to 144MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo144_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 18 = 144 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#endif
@@ -0,0 +1,32 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : system_ch32v20x.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : CH32V20x Device Peripheral Access Layer System Header File.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __SYSTEM_ch32v20x_H
#define __SYSTEM_ch32v20x_H
#ifdef __cplusplus
extern "C" {
#endif
extern uint32_t SystemCoreClock; /* System Clock Frequency (Core Clock) */
/* System_Exported_Functions */
extern void SystemInit(void);
extern void SystemCoreClockUpdate(void);
#ifdef __cplusplus
}
#endif
#endif /*__CH32V20x_SYSTEM_H */
+143
View File
@@ -0,0 +1,143 @@
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View File
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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+16
View File
@@ -0,0 +1,16 @@
Mcu Type=CH32V20x
Address=0x08000000
Target Path=obj/Stop_Mode.hex
Erase All=true
Program=true
Verify=true
Reset=true
Vendor=WCH
Link=WCH-Link
Toolchain=RISC-V
Series=CH32V203
Description=ROM(byte): 64K, SRAM(byte): 20K, CHIP PINS: 32, GPIO PORTS: 27.\nWCH CH32V2 series of mainstream MCUs covers the needs of a large variety of applications in the industrial,medical and consumer markets. High performance with first-class peripherals and low-power,low-voltage operation is paired with a high level of integration at accessible prices with a simple architecture and easy-to-use tools.
PeripheralVersion=1.0
MCU=CH32V203RBT6
+2
View File
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�i“CZ ?"Ç�¸rŸ�F<Fy8E9Y‡½„%Pa³D¶La† %Ã'y€¡]Ç;’¶ŸS)1†1+R4><‚.„ÇÅ¿º°?/£XO©Ä¿ChQN$*¢”»EÅBk‹!2tŒ+buh†nUb]xl‹l|
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@@ -0,0 +1,42 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_conf.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Library configuration file.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V20x_CONF_H
#define __CH32V20x_CONF_H
#include "ch32v20x_adc.h"
#include "ch32v20x_bkp.h"
#include "ch32v20x_can.h"
#include "ch32v20x_crc.h"
#include "ch32v20x_dbgmcu.h"
#include "ch32v20x_dma.h"
#include "ch32v20x_exti.h"
#include "ch32v20x_flash.h"
#include "ch32v20x_gpio.h"
#include "ch32v20x_i2c.h"
#include "ch32v20x_iwdg.h"
#include "ch32v20x_pwr.h"
#include "ch32v20x_rcc.h"
#include "ch32v20x_rtc.h"
#include "ch32v20x_spi.h"
#include "ch32v20x_tim.h"
#include "ch32v20x_usart.h"
#include "ch32v20x_wwdg.h"
#include "ch32v20x_it.h"
#include "ch32v20x_misc.h"
#endif /* __CH32V20x_CONF_H */
+60
View File
@@ -0,0 +1,60 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_it.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main Interrupt Service Routines.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x_it.h"
void NMI_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void HardFault_Handler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
void EXTI0_IRQHandler(void) __attribute__((interrupt("WCH-Interrupt-fast")));
/*********************************************************************
* @fn NMI_Handler
*
* @brief This function handles NMI exception.
*
* @return none
*/
void NMI_Handler(void)
{
}
/*********************************************************************
* @fn HardFault_Handler
*
* @brief This function handles Hard Fault exception.
*
* @return none
*/
void HardFault_Handler(void)
{
while (1)
{
}
}
/*********************************************************************
* @fn EXTI0_IRQHandler
*
* @brief This function handles EXTI0 exception.
*
* @return none
*/
void EXTI0_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line0)!=RESET)
{
SystemInit();
printf("EXTI0 Wake_up\r\n");
EXTI_ClearITPendingBit(EXTI_Line0); /* Clear Flag */
}
}
+20
View File
@@ -0,0 +1,20 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v20x_it.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : This file contains the headers of the interrupt handlers.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V20x_IT_H
#define __CH32V20x_IT_H
#include "debug.h"
#endif /* __CH32V20x_IT_H */
+88
View File
@@ -0,0 +1,88 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : main.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main program body.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
/*
*@Note
low power, stop mode routine:
EXTI_Line0(PA0)
This routine demonstrates WFI enters sleep mode, PA0 pin input low level triggers
external interrupt EXTI_Line0 exits stop mode,Program execution continues after wake-up.
*/
#include "debug.h"
/* Global define */
/* Global Variable */
/*********************************************************************
* @fn EXTI0_INT_INIT
*
* @brief Initializes EXTI0 collection.
*
* @return none
*/
void EXTI0_INT_INIT(void)
{
GPIO_InitTypeDef GPIO_InitStructure = {0};
EXTI_InitTypeDef EXTI_InitStructure = {0};
NVIC_InitTypeDef NVIC_InitStructure = {0};
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* GPIOA.0 ----> EXTI_Line0 */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);
EXTI_InitStructure.EXTI_Line = EXTI_Line0;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/*********************************************************************
* @fn main
*
* @brief Main program.
*
* @return none
*/
int main(void)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
Delay_Init();
USART_Printf_Init(115200);
printf("SystemClk:%d\r\n", SystemCoreClock);
printf("Stop Mode Test\r\n");
EXTI0_INT_INIT();
printf("\r\n ********** \r\n");
PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
printf("\r\n ########## \r\n");
while(1)
{
Delay_Ms(1000);
printf("Run in main\r\n");
}
}
@@ -0,0 +1,986 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : system_ch32v20x.c
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : CH32V20x Device Peripheral Access Layer System Source File.
* For HSE = 32Mhz (CH32V208x/CH32V203RBT6)
* For HSE = 8Mhz (other CH32V203x)
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x.h"
/*
* Uncomment the line corresponding to the desired System clock (SYSCLK) frequency (after
* reset the HSI is used as SYSCLK source).
* If none of the define below is enabled, the HSI is used as System clock source.
*/
//#define SYSCLK_FREQ_HSE HSE_VALUE
//#define SYSCLK_FREQ_48MHz_HSE 48000000
//#define SYSCLK_FREQ_56MHz_HSE 56000000
//#define SYSCLK_FREQ_72MHz_HSE 72000000
#define SYSCLK_FREQ_96MHz_HSE 96000000
//#define SYSCLK_FREQ_120MHz_HSE 120000000
//#define SYSCLK_FREQ_144MHz_HSE 144000000
//#define SYSCLK_FREQ_HSI HSI_VALUE
//#define SYSCLK_FREQ_48MHz_HSI 48000000
//#define SYSCLK_FREQ_56MHz_HSI 56000000
//#define SYSCLK_FREQ_72MHz_HSI 72000000
//#define SYSCLK_FREQ_96MHz_HSI 96000000
//#define SYSCLK_FREQ_120MHz_HSI 120000000
//#define SYSCLK_FREQ_144MHz_HSI 144000000
/* Clock Definitions */
#ifdef SYSCLK_FREQ_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_48MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_56MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_72MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_96MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_96MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_120MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_120MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_144MHz_HSE
uint32_t SystemCoreClock = SYSCLK_FREQ_144MHz_HSE; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_48MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_48MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_56MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_56MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_72MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_72MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_96MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_96MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_120MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_120MHz_HSI; /* System Clock Frequency (Core Clock) */
#elif defined SYSCLK_FREQ_144MHz_HSI
uint32_t SystemCoreClock = SYSCLK_FREQ_144MHz_HSI; /* System Clock Frequency (Core Clock) */
#else
uint32_t SystemCoreClock = HSI_VALUE; /* System Clock Frequency (Core Clock) */
#endif
__I uint8_t AHBPrescTable[16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9};
/* system_private_function_proto_types */
static void SetSysClock(void);
#ifdef SYSCLK_FREQ_HSE
static void SetSysClockToHSE( void );
#elif defined SYSCLK_FREQ_48MHz_HSE
static void SetSysClockTo48_HSE( void );
#elif defined SYSCLK_FREQ_56MHz_HSE
static void SetSysClockTo56_HSE( void );
#elif defined SYSCLK_FREQ_72MHz_HSE
static void SetSysClockTo72_HSE( void );
#elif defined SYSCLK_FREQ_96MHz_HSE
static void SetSysClockTo96_HSE( void );
#elif defined SYSCLK_FREQ_120MHz_HSE
static void SetSysClockTo120_HSE( void );
#elif defined SYSCLK_FREQ_144MHz_HSE
static void SetSysClockTo144_HSE( void );
#elif defined SYSCLK_FREQ_48MHz_HSI
static void SetSysClockTo48_HSI( void );
#elif defined SYSCLK_FREQ_56MHz_HSI
static void SetSysClockTo56_HSI( void );
#elif defined SYSCLK_FREQ_72MHz_HSI
static void SetSysClockTo72_HSI( void );
#elif defined SYSCLK_FREQ_96MHz_HSI
static void SetSysClockTo96_HSI( void );
#elif defined SYSCLK_FREQ_120MHz_HSI
static void SetSysClockTo120_HSI( void );
#elif defined SYSCLK_FREQ_144MHz_HSI
static void SetSysClockTo144_HSI( void );
#endif
/*********************************************************************
* @fn SystemInit
*
* @brief Setup the microcontroller system Initialize the Embedded Flash Interface,
* the PLL and update the SystemCoreClock variable.
*
* @return none
*/
void SystemInit (void)
{
RCC->CTLR |= (uint32_t)0x00000001;
RCC->CFGR0 &= (uint32_t)0xF8FF0000;
RCC->CTLR &= (uint32_t)0xFEF6FFFF;
RCC->CTLR &= (uint32_t)0xFFFBFFFF;
RCC->CFGR0 &= (uint32_t)0xFF80FFFF;
RCC->INTR = 0x009F0000;
SetSysClock();
}
/*********************************************************************
* @fn SystemCoreClockUpdate
*
* @brief Update SystemCoreClock variable according to Clock Register Values.
*
* @return none
*/
void SystemCoreClockUpdate (void)
{
uint32_t tmp = 0, pllmull = 0, pllsource = 0, Pll_6_5 = 0;
tmp = RCC->CFGR0 & RCC_SWS;
switch (tmp)
{
case 0x00:
SystemCoreClock = HSI_VALUE;
break;
case 0x04:
SystemCoreClock = HSE_VALUE;
break;
case 0x08:
pllmull = RCC->CFGR0 & RCC_PLLMULL;
pllsource = RCC->CFGR0 & RCC_PLLSRC;
pllmull = ( pllmull >> 18) + 2;
if(pllmull == 17) pllmull = 18;
if (pllsource == 0x00)
{
if(EXTEN->EXTEN_CTR & EXTEN_PLL_HSI_PRE){
SystemCoreClock = HSI_VALUE * pllmull;
}
else{
SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
}
}
else
{
#if defined (CH32V20x_D8W)
if((RCC->CFGR0 & (3<<22)) == (3<<22))
{
SystemCoreClock = ((HSE_VALUE>>1)) * pllmull;
}
else
#endif
if ((RCC->CFGR0 & RCC_PLLXTPRE) != (uint32_t)RESET)
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = ((HSE_VALUE>>2) >> 1) * pllmull;
#else
SystemCoreClock = (HSE_VALUE >> 1) * pllmull;
#endif
}
else
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = (HSE_VALUE>>2) * pllmull;
#else
SystemCoreClock = HSE_VALUE * pllmull;
#endif
}
}
if(Pll_6_5 == 1) SystemCoreClock = (SystemCoreClock / 2);
break;
default:
SystemCoreClock = HSI_VALUE;
break;
}
tmp = AHBPrescTable[((RCC->CFGR0 & RCC_HPRE) >> 4)];
SystemCoreClock >>= tmp;
}
/*********************************************************************
* @fn SetSysClock
*
* @brief Configures the System clock frequency, HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClock(void)
{
#ifdef SYSCLK_FREQ_HSE
SetSysClockToHSE();
#elif defined SYSCLK_FREQ_48MHz_HSE
SetSysClockTo48_HSE();
#elif defined SYSCLK_FREQ_56MHz_HSE
SetSysClockTo56_HSE();
#elif defined SYSCLK_FREQ_72MHz_HSE
SetSysClockTo72_HSE();
#elif defined SYSCLK_FREQ_96MHz_HSE
SetSysClockTo96_HSE();
#elif defined SYSCLK_FREQ_120MHz_HSE
SetSysClockTo120_HSE();
#elif defined SYSCLK_FREQ_144MHz_HSE
SetSysClockTo144_HSE();
#elif defined SYSCLK_FREQ_48MHz_HSI
SetSysClockTo48_HSI();
#elif defined SYSCLK_FREQ_56MHz_HSI
SetSysClockTo56_HSI();
#elif defined SYSCLK_FREQ_72MHz_HSI
SetSysClockTo72_HSI();
#elif defined SYSCLK_FREQ_96MHz_HSI
SetSysClockTo96_HSI();
#elif defined SYSCLK_FREQ_120MHz_HSI
SetSysClockTo120_HSI();
#elif defined SYSCLK_FREQ_144MHz_HSI
SetSysClockTo144_HSI();
#endif
/* If none of the define above is enabled, the HSI is used as System clock
* source (default after reset)
*/
}
#ifdef SYSCLK_FREQ_HSE
/*********************************************************************
* @fn SetSysClockToHSE
*
* @brief Sets HSE as System clock source and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockToHSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV1;
/* Select HSE as system clock source
* CH32V20x_D6 (HSE=8MHZ)
* CH32V20x_D8 (HSE=32MHZ)
* CH32V20x_D8W (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_HSE;
/* Wait till HSE is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x04)
{
}
}
else
{
/* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_48MHz_HSE
/*********************************************************************
* @fn SetSysClockTo48_HSE
*
* @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo48_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 6 = 48 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 6 = 48 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 6 = 48 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL6);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_56MHz_HSE
/*********************************************************************
* @fn SetSysClockTo56_HSE
*
* @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo56_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 7 = 56 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 7 = 56 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 7 = 56 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL7);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_72MHz_HSE
/*********************************************************************
* @fn SetSysClockTo72_HSE
*
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo72_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 9 = 72 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 9 = 72 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 9 = 72 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL9);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_96MHz_HSE
/*********************************************************************
* @fn SetSysClockTo96_HSE
*
* @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo96_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 12 = 96 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 12 = 96 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL12);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_120MHz_HSE
/*********************************************************************
* @fn SetSysClockTo120_HSE
*
* @brief Sets System clock frequency to 120MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo120_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if(HSEStatus == (uint32_t)0x01)
{
#if defined (CH32V20x_D8W)
RCC->CFGR0 |= (uint32_t)(3<<22);
/* HCLK = SYSCLK/2 */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV2;
#else
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
#endif
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 15 = 120 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 15 = 120 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/2 * 15 = 240 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL15);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_144MHz_HSE
/*********************************************************************
* @fn SetSysClockTo144_HSE
*
* @brief Sets System clock frequency to 144MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo144_HSE(void)
{
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
RCC->CTLR |= ((uint32_t)RCC_HSEON);
/* Wait till HSE is ready and if Time out is reached exit */
do
{
HSEStatus = RCC->CTLR & RCC_HSERDY;
StartUpCounter++;
} while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));
if ((RCC->CTLR & RCC_HSERDY) != RESET)
{
HSEStatus = (uint32_t)0x01;
}
else
{
HSEStatus = (uint32_t)0x00;
}
if (HSEStatus == (uint32_t)0x01)
{
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* CH32V20x_D6-PLL configuration: PLLCLK = HSE * 18 = 144 MHz (HSE=8MHZ)
* CH32V20x_D8-PLL configuration: PLLCLK = HSE/4 * 18 = 144 MHz (HSE=32MHZ)
* CH32V20x_D8W-PLL configuration: PLLCLK = HSE/4 * 18 = 144 MHz (HSE=32MHZ)
*/
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSE | RCC_PLLXTPRE_HSE | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
else
{
/*
* If HSE fails to start-up, the application will have wrong clock
* configuration. User can add here some code to deal with this error
*/
}
}
#elif defined SYSCLK_FREQ_48MHz_HSI
/*********************************************************************
* @fn SetSysClockTo48_HSI
*
* @brief Sets System clock frequency to 48MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo48_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 6 = 48 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL6);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_56MHz_HSI
/*********************************************************************
* @fn SetSysClockTo56_HSI
*
* @brief Sets System clock frequency to 56MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo56_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 7 = 48 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL7);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_72MHz_HSI
/*********************************************************************
* @fn SetSysClockTo72_HSI
*
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo72_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 9 = 72 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL9);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_96MHz_HSI
/*********************************************************************
* @fn SetSysClockTo96_HSI
*
* @brief Sets System clock frequency to 96MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo96_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 12 = 96 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL12);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_120MHz_HSI
/*********************************************************************
* @fn SetSysClockTo120_HSI
*
* @brief Sets System clock frequency to 120MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo120_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 15 = 120 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL15);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t) ~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#elif defined SYSCLK_FREQ_144MHz_HSI
/*********************************************************************
* @fn SetSysClockTo144_HSI
*
* @brief Sets System clock frequency to 144MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
*
* @return none
*/
static void SetSysClockTo144_HSI(void)
{
EXTEN->EXTEN_CTR |= EXTEN_PLL_HSI_PRE;
/* HCLK = SYSCLK */
RCC->CFGR0 |= (uint32_t)RCC_HPRE_DIV1;
/* PCLK2 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE2_DIV1;
/* PCLK1 = HCLK */
RCC->CFGR0 |= (uint32_t)RCC_PPRE1_DIV2;
/* PLL configuration: PLLCLK = HSI * 18 = 144 MHz */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_PLLSRC | RCC_PLLXTPRE | RCC_PLLMULL));
RCC->CFGR0 |= (uint32_t)(RCC_PLLSRC_HSI_Div2 | RCC_PLLMULL18);
/* Enable PLL */
RCC->CTLR |= RCC_PLLON;
/* Wait till PLL is ready */
while((RCC->CTLR & RCC_PLLRDY) == 0)
{
}
/* Select PLL as system clock source */
RCC->CFGR0 &= (uint32_t)((uint32_t)~(RCC_SW));
RCC->CFGR0 |= (uint32_t)RCC_SW_PLL;
/* Wait till PLL is used as system clock source */
while ((RCC->CFGR0 & (uint32_t)RCC_SWS) != (uint32_t)0x08)
{
}
}
#endif
@@ -0,0 +1,32 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : system_ch32v20x.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : CH32V20x Device Peripheral Access Layer System Header File.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __SYSTEM_ch32v20x_H
#define __SYSTEM_ch32v20x_H
#ifdef __cplusplus
extern "C" {
#endif
extern uint32_t SystemCoreClock; /* System Clock Frequency (Core Clock) */
/* System_Exported_Functions */
extern void SystemInit(void);
extern void SystemCoreClockUpdate(void);
#ifdef __cplusplus
}
#endif
#endif /*__CH32V20x_SYSTEM_H */