bstanwell/ch32v20x-examples
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qiyongshuang
2026-01-07 10:43:29 +08:00
parent 6209b6e7f9
commit d161f84c90
551 changed files with 23169 additions and 1518 deletions
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EVT/EXAM/PWR/Sleep_Mode/User/main.c
+24 -7
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@@ -1,8 +1,8 @@
/********************************** (C) COPYRIGHT *******************************
* File Name : main.c
* Author : WCH
* Version : V1.0.0
* Date : 2023/12/29
* Version : V1.0.1
* Date : 2025/07/29
* Description : Main program body.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
@@ -14,9 +14,12 @@
*@Note
*low power, sleep mode routine:
*EXTI_Line0(PA0)
*This routine demonstrates WFI enters sleep mode, PA0 pin input low level triggers external
*This routine demonstrates WFI enters sleep mode, PA0 pin input high level triggers external
*interrupt EXTI_Line0 to exit sleep mode,Program execution continues after wake-up.
*
*For the small package model of the chip, there are some pins that have not been led out
*compared to the largest package, or some pins that have been packaged but not used.
*These pins need to be set as pull-down\up inputs to reduce power consumption.Please refer
*to the routine configuration for details.
*/
#include "debug.h"
@@ -41,15 +44,14 @@ void EXTI0_INT_INIT(void)
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_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
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_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
@@ -69,9 +71,24 @@ void EXTI0_INT_INIT(void)
*/
int main(void)
{
GPIO_InitTypeDef GPIO_InitStructure = {0};
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
SystemCoreClockUpdate();
Delay_Init();
Delay_Ms(1000);
/* To reduce power consumption, unused GPIOs need to be set as pull-down inputs */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|
RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable,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);
USART_Printf_Init(115200);
printf("SystemClk:%d\r\n", SystemCoreClock);
printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );