V2.0
This commit is contained in:
qiyongshuang
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|
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<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.disassemble.1859590835" name="Disassemble (--disassemble|-d)" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.createlisting.disassemble" useByScannerDiscovery="false" value="true" valueType="boolean"/>
|
||||
</tool>
|
||||
<tool id="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.printsize.712424314" name="GNU RISC-V Cross Print Size" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.tool.printsize">
|
||||
<option id="ilg.gnumcueclipse.managedbuild.cross.riscv.option.printsize.format.1404031980" name="Size format" superClass="ilg.gnumcueclipse.managedbuild.cross.riscv.option.printsize.format" useByScannerDiscovery="false"/>
|
||||
</tool>
|
||||
</toolChain>
|
||||
</folderInfo>
|
||||
<sourceEntries>
|
||||
<entry excluding="LD|Startup|Peripheral|Ld|Debug|Core" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name=""/>
|
||||
<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Core"/>
|
||||
<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Debug"/>
|
||||
<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Ld"/>
|
||||
<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Peripheral"/>
|
||||
<entry excluding="startup_ch32v20x_D6.S|startup_ch32v20x_D8.S" flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Startup"/>
|
||||
</sourceEntries>
|
||||
</configuration>
|
||||
</storageModule>
|
||||
<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
|
||||
<storageModule moduleId="ilg.gnumcueclipse.managedbuild.packs"/>
|
||||
</cconfiguration>
|
||||
</storageModule>
|
||||
<storageModule moduleId="cdtBuildSystem" version="4.0.0">
|
||||
<project id="999.ilg.gnumcueclipse.managedbuild.cross.riscv.target.elf.275846018" name="Executable file" projectType="ilg.gnumcueclipse.managedbuild.cross.riscv.target.elf"/>
|
||||
</storageModule>
|
||||
<storageModule moduleId="scannerConfiguration">
|
||||
<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
|
||||
<scannerConfigBuildInfo instanceId="ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.debug.767917625;ilg.gnumcueclipse.managedbuild.cross.riscv.config.elf.debug.767917625.;ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.1375371130;ilg.gnumcueclipse.managedbuild.cross.riscv.tool.c.compiler.input.1473381709">
|
||||
<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
|
||||
</scannerConfigBuildInfo>
|
||||
<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">
|
||||
<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
|
||||
</scannerConfigBuildInfo>
|
||||
</storageModule>
|
||||
<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
|
||||
<storageModule moduleId="org.eclipse.cdt.make.core.buildtargets"/>
|
||||
|
||||
</cproject>
|
||||
@@ -0,0 +1,61 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<projectDescription>
|
||||
<name>HSE_CLK</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 +1,17 @@
|
||||
Mcu Type=CH32V20x
|
||||
Address=0x08000000
|
||||
Target Path=obj\HSE_CLK.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
|
||||
CLKSpeed=1
|
||||
@@ -0,0 +1,2 @@
|
||||
�i“CZ ?"Ç�¸rŸ�F<Fy8E9Y‡½„%P a³D¶La† %Ã'y€¡]Ç;’¶ ŸS)1†1+R4><‚.„ÇÅ¿º° ?/£XO©Ä¿ChQN$*¢”»EÅBk‹!2tŒ+buh†nUb]xl‹l|
|
||||
+"Ÿ<“¯AH42}z8p;m€u 1Ž-¦eh»Od¼Âwµª7x{5�CqEx©=;¦¢e¢º»2£Š ‚«* BP Mš"
|
||||
@@ -0,0 +1,40 @@
|
||||
/********************************** (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.
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*******************************************************************************/
|
||||
#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 +1,45 @@
|
||||
/********************************** (C) COPYRIGHT *******************************
|
||||
* File Name : ch32v20x_it.c
|
||||
* Author : WCH
|
||||
* Version : V1.0.0
|
||||
* Date : 2023/12/29
|
||||
* 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)
|
||||
{
|
||||
while (1)
|
||||
{
|
||||
}
|
||||
}
|
||||
|
||||
/*********************************************************************
|
||||
* @fn HardFault_Handler
|
||||
*
|
||||
* @brief This function handles Hard Fault exception.
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
void HardFault_Handler(void)
|
||||
{
|
||||
while (1)
|
||||
{
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@@ -0,0 +1,18 @@
|
||||
/********************************** (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.
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*******************************************************************************/
|
||||
#ifndef __CH32V20x_IT_H
|
||||
#define __CH32V20x_IT_H
|
||||
|
||||
#include "debug.h"
|
||||
|
||||
|
||||
#endif /* __CH32V20x_IT_H */
|
||||
|
||||
|
||||
@@ -0,0 +1,303 @@
|
||||
/********************************** (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
|
||||
*HSE frequency check routine:
|
||||
*Checking the frequency value of HSE by using of HSI.
|
||||
* When HSE is 3 ~ 25M,the HSE clock is effective ,When CH32F20x_D8 and CH32F20x_D6 used.
|
||||
* When HSE is 32M,the HSE clock is effective ,When CH32F20x_D8C and CH32F20x_D8W used.
|
||||
*HSE value -the frequency of HSE
|
||||
*MCO(PA8) - outputs the HSE clock
|
||||
*
|
||||
*/
|
||||
|
||||
#include "debug.h"
|
||||
|
||||
uint8_t HSEFrequencyMhz;
|
||||
uint8_t value;
|
||||
#define F1M 1000000
|
||||
#define CHECK_ERR_COUNT (8)
|
||||
|
||||
#define RTC_COUNT_DELAY (100)
|
||||
#define HSIClock (8000000)
|
||||
#define PPL2_ENABLE 1
|
||||
#define HSE_ENABLE 0
|
||||
|
||||
#define STclk_div8 0
|
||||
#define STclk_div1 1
|
||||
|
||||
#define CHECK_MODE STclk_div8
|
||||
//#define CHECK_MODE STclk_div1
|
||||
uint8_t value=0;
|
||||
|
||||
/*********************************************************************
|
||||
* @fn HSE_FrequencyCheck
|
||||
*
|
||||
* @brief Checking HSE Frequency Values.
|
||||
*
|
||||
* @return HSEFrequencyMhz - HSE Frequency
|
||||
*/
|
||||
uint8_t HSE_FrequencyCheck(void) {
|
||||
|
||||
uint32_t rtc_val;
|
||||
uint32_t tick_val;
|
||||
uint32_t HSEFrequency, HSEFrequency_x, RTC_DIV_VAL,RTC_CHANGE_TIMEOUT,RTC_COUNT_MAX_TIMEOUT;
|
||||
uint8_t count;
|
||||
#if defined (CH32V20x_D6)
|
||||
if(((*(uint32_t *) 0x40022030) & 0x0F000000) != 0)
|
||||
{
|
||||
RTC_DIV_VAL=128;
|
||||
}
|
||||
else {
|
||||
RTC_DIV_VAL=512;
|
||||
}
|
||||
|
||||
#else
|
||||
RTC_DIV_VAL=512;
|
||||
#endif
|
||||
|
||||
RTC_CHANGE_TIMEOUT=(HSIClock/F1M)*RTC_DIV_VAL;
|
||||
RTC_COUNT_MAX_TIMEOUT=(HSIClock/F1M)*RTC_DIV_VAL*RTC_COUNT_DELAY;
|
||||
|
||||
Delay_Init();
|
||||
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
|
||||
PWR_BackupAccessCmd(ENABLE);
|
||||
BKP_DeInit();
|
||||
#if defined(CH32V20x_D8) || defined(CH32V20x_D8W)
|
||||
RCC_RTCCLKConfig(RCC_RTCCLKSource_HSE_Div512);
|
||||
#else
|
||||
|
||||
RCC_RTCCLKConfig(RCC_RTCCLKSource_HSE_Div128);
|
||||
#endif
|
||||
RCC_RTCCLKCmd(ENABLE);
|
||||
RTC_WaitForLastTask();
|
||||
RTC_WaitForSynchro();
|
||||
RTC_WaitForLastTask();
|
||||
RTC_EnterConfigMode();
|
||||
RTC_SetPrescaler(0);
|
||||
RTC_WaitForLastTask();
|
||||
RTC_ExitConfigMode();
|
||||
while( (RCC->BDCTLR & (1<<15)) != (1<<15) ) {}
|
||||
count = CHECK_ERR_COUNT;
|
||||
while(1) {
|
||||
SysTick->CTLR = 0;
|
||||
SysTick->CNT =0;
|
||||
#if (CHECK_MODE == STclk_div1)
|
||||
SysTick->CTLR = (1<<5)|(1<<2)|(1<<0);
|
||||
#elif (CHECK_MODE == STclk_div8)
|
||||
SysTick->CTLR = (1<<5)|(1<<0);
|
||||
#endif
|
||||
rtc_val = RTC_GetCounter();
|
||||
|
||||
while( rtc_val == RTC_GetCounter()) {
|
||||
if( SysTick->CNT > RTC_CHANGE_TIMEOUT ) {
|
||||
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
SysTick->CTLR = 0;
|
||||
SysTick->CNT =0;
|
||||
#if (CHECK_MODE == STclk_div1)
|
||||
SysTick->CTLR = (1<<5)|(1<<2)|(1<<0);
|
||||
#elif (CHECK_MODE == STclk_div8)
|
||||
SysTick->CTLR = (1<<5)|(1<<0);
|
||||
#endif
|
||||
rtc_val += (RTC_COUNT_DELAY);
|
||||
while( rtc_val >= RTC_GetCounter() ) {
|
||||
if( SysTick->CNT > RTC_COUNT_MAX_TIMEOUT ) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
tick_val = SysTick->CNT;
|
||||
SysTick->CTLR = 0;
|
||||
#if (CHECK_MODE == STclk_div1)
|
||||
HSEFrequency = HSIClock/(tick_val/RTC_DIV_VAL)*RTC_COUNT_DELAY;
|
||||
#elif (CHECK_MODE == STclk_div8)
|
||||
HSEFrequency = HSIClock/(tick_val/(RTC_DIV_VAL/8))*RTC_COUNT_DELAY;
|
||||
#endif
|
||||
HSEFrequencyMhz = (HSEFrequency+(F1M/2))/F1M;
|
||||
|
||||
|
||||
SysTick->CTLR = 0;
|
||||
SysTick->CNT =0;
|
||||
#if (CHECK_MODE == STclk_div1)
|
||||
SysTick->CTLR = (1<<5)|(1<<2)|(1<<0);
|
||||
#elif (CHECK_MODE == STclk_div8)
|
||||
SysTick->CTLR = (1<<5)|(1<<0);
|
||||
#endif
|
||||
rtc_val = RTC_GetCounter();
|
||||
while( rtc_val == RTC_GetCounter() ) {
|
||||
if( SysTick->CNT > RTC_CHANGE_TIMEOUT ) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
SysTick->CTLR = 0;
|
||||
SysTick->CNT =0;
|
||||
#if (CHECK_MODE == STclk_div1)
|
||||
SysTick->CTLR = (1<<5)|(1<<2)|(1<<0);
|
||||
#elif (CHECK_MODE == STclk_div8)
|
||||
SysTick->CTLR = (1<<5)|(1<<0);
|
||||
#endif
|
||||
rtc_val += (RTC_COUNT_DELAY);
|
||||
while( rtc_val >= RTC_GetCounter() ) {
|
||||
if( SysTick->CNT > RTC_COUNT_MAX_TIMEOUT ) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
tick_val = SysTick->CNT;
|
||||
SysTick->CTLR = 0;
|
||||
#if (CHECK_MODE == STclk_div1)
|
||||
HSEFrequency = HSIClock/(tick_val/RTC_DIV_VAL)*RTC_COUNT_DELAY;
|
||||
#elif (CHECK_MODE == STclk_div8)
|
||||
HSEFrequency = HSIClock/(tick_val/(RTC_DIV_VAL/8))*RTC_COUNT_DELAY;
|
||||
#endif
|
||||
|
||||
HSEFrequency_x = (HSEFrequency+(F1M/2))/F1M;
|
||||
|
||||
if( HSEFrequencyMhz == HSEFrequency_x ) {
|
||||
break;
|
||||
}
|
||||
if( --count == 0 ) {
|
||||
HSEFrequencyMhz = 253;
|
||||
printf("HSE check error.\n");
|
||||
break;
|
||||
}
|
||||
}
|
||||
return HSEFrequencyMhz;
|
||||
}
|
||||
|
||||
/*********************************************************************
|
||||
* @fn SetSysClockTo72
|
||||
*
|
||||
* @brief Sets System clock frequency to 72MHz and configure HCLK, PCLK2 and PCLK1 prescalers.
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
static void SetSysClockTo72(void) {
|
||||
__IO uint32_t StartUpCounter = 0, HSEStatus = 0;
|
||||
USART_Printf_Init(115200);
|
||||
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) {
|
||||
value = HSE_FrequencyCheck();
|
||||
HSEStatus = (uint32_t) 0x00;
|
||||
#if defined(CH32V20x_D8) || defined(CH32V20x_D8W)
|
||||
if (value == 32) {
|
||||
HSEStatus = (uint32_t) 0x01;
|
||||
}
|
||||
#else
|
||||
if ((value >= 3) && (value <= 25)) {
|
||||
HSEStatus = (uint32_t) 0x01;
|
||||
}
|
||||
#endif
|
||||
|
||||
} 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;
|
||||
|
||||
/* PLL configuration: PLLCLK = HSE * 9 = 72 MHz */
|
||||
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 {
|
||||
|
||||
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 = HSE * 9 = 72 MHz */
|
||||
RCC->CFGR0 &= (uint32_t) ((uint32_t) ~(RCC_PLLSRC | RCC_PLLXTPRE |
|
||||
RCC_PLLMULL));
|
||||
|
||||
RCC->CFGR0 |= (uint32_t) (RCC_PLLSRC_HSI_Div2 | 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)
|
||||
{
|
||||
}
|
||||
}
|
||||
}
|
||||
/*********************************************************************
|
||||
* @fn main
|
||||
*
|
||||
* @brief Main program.
|
||||
*
|
||||
* @return none
|
||||
*/
|
||||
int main(void)
|
||||
{
|
||||
GPIO_InitTypeDef GPIO_InitStructure={0};
|
||||
|
||||
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
|
||||
SetSysClockTo72();
|
||||
USART_Printf_Init(115200);
|
||||
SystemCoreClockUpdate();
|
||||
printf("SystemClk:%d\r\n",SystemCoreClock);
|
||||
printf("HSE value %02d\r\n", value);
|
||||
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
|
||||
|
||||
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
|
||||
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
|
||||
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
||||
GPIO_Init(GPIOA, &GPIO_InitStructure);
|
||||
|
||||
/* MCO Output GPIOA 8 */
|
||||
RCC_MCOConfig( RCC_MCO_HSE );
|
||||
|
||||
while(1);
|
||||
}
|
||||
@@ -0,0 +1,119 @@
|
||||
/********************************** (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.
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*********************************************************************************/
|
||||
#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.
|
||||
*/
|
||||
|
||||
|
||||
/* Clock Definitions */
|
||||
|
||||
uint32_t SystemCoreClock = HSI_VALUE; /* System Clock Frequency (Core Clock) */
|
||||
|
||||
__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);
|
||||
|
||||
/*********************************************************************
|
||||
* @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) {
|
||||
SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
|
||||
} else {
|
||||
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) {
|
||||
/* If none of the define above is enabled, the HSI is used as System clock
|
||||
* source (default after reset)
|
||||
*/
|
||||
}
|
||||
|
||||
@@ -0,0 +1,30 @@
|
||||
/********************************** (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.
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*******************************************************************************/
|
||||
#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 */
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user