/********************************** (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();
        }
    }
}