forked from WCH-Templates/CH32V00x
96 lines
2.7 KiB
C
96 lines
2.7 KiB
C
/********************************** (C) COPYRIGHT *******************************
|
||
* File Name : main.c
|
||
* Author : WCH
|
||
* Version : V1.0.0
|
||
* Date : 2022/08/08
|
||
* Description : Main program body.
|
||
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
|
||
* SPDX-License-Identifier: Apache-2.0
|
||
*******************************************************************************/
|
||
|
||
/*
|
||
*@Note
|
||
轮询收发模式例程：
|
||
Master：USART1_Tx(PD5)、USART1_Rx(PD6)。
|
||
本例程演示 USART1 收到CH341发送的数据取反发出（波特率 115200）。
|
||
|
||
注：
|
||
硬件连线：PD5 —— Rx
|
||
PD6 —— Tx
|
||
|
||
*/
|
||
|
||
#include "debug.h"
|
||
|
||
|
||
/* Global define */
|
||
|
||
|
||
/* Global Variable */
|
||
vu8 val;
|
||
|
||
/*********************************************************************
|
||
* @fn USARTx_CFG
|
||
*
|
||
* @brief Initializes the USART2 & USART3 peripheral.
|
||
*
|
||
* @return none
|
||
*/
|
||
void USARTx_CFG(void)
|
||
{
|
||
GPIO_InitTypeDef GPIO_InitStructure = {0};
|
||
USART_InitTypeDef USART_InitStructure = {0};
|
||
|
||
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_USART1, ENABLE);
|
||
|
||
/* USART1 TX-->D.5 RX-->D.6 */
|
||
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
|
||
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
|
||
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
|
||
GPIO_Init(GPIOD, &GPIO_InitStructure);
|
||
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
|
||
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
|
||
GPIO_Init(GPIOD, &GPIO_InitStructure);
|
||
|
||
USART_InitStructure.USART_BaudRate = 115200;
|
||
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
|
||
USART_InitStructure.USART_StopBits = USART_StopBits_1;
|
||
USART_InitStructure.USART_Parity = USART_Parity_No;
|
||
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
|
||
USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
|
||
|
||
USART_Init(USART1, &USART_InitStructure);
|
||
USART_Cmd(USART1, ENABLE);
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @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);
|
||
|
||
USARTx_CFG();
|
||
|
||
while(1)
|
||
{
|
||
|
||
while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET)
|
||
{
|
||
/* waiting for receiving finish */
|
||
}
|
||
val = (USART_ReceiveData(USART1));
|
||
USART_SendData(USART1, ~val);
|
||
while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET)
|
||
{
|
||
/* waiting for sending finish */
|
||
}
|
||
}
|
||
}
|