dc32-retro-tech-addon/firmware/ch32v003_bootloader/user/main.c

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/********************************** (C) COPYRIGHT *******************************
* File Name : main.c
* Author : WCH
* Version : V1.0.0
* Date : 2023/12/25
* 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
*IAP upgrade routine:
*Support serial port for FLASH burning
*
*1. Use the IAP download tool to realize the download PC0 floating (default pull-up input)
*2. After downloading the APP, connect PC0 to ground (low level input), and press the
*reset button to run the APP program.
*3. use WCH-LinkUtility.exe download to BOOT(adr-0x1FFFF000)
*
*/
#include "debug.h"
#include "string.h"
#include "iap.h"
/*********************************************************************
* @fn IAP_2_APP
*
* @brief IAP_2_APP program.
*
* @return none
*/
void IAP_2_APP(void)
{
RCC_ClearFlag();
SystemReset_StartMode(Start_Mode_USER);
NVIC_SystemReset();
}
/*********************************************************************
* @fn main
*
* @brief Main program.
*
* @return none
*/
int main(void)
{
// Enable GPIOD,USART1, GPIOC clock
RCC->APB2PCENR |= (RCC_APB2Periph_GPIOD | RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOC);
USART1_CFG(115200);
if(!btn2_pushed()) {
IAP_2_APP();
while(1);
}
while(1) {
if(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET) {
UART_Rx_Deal();
}
}
}