stm32f103c8t6串口通信程序示例
时间: 2023-04-04 08:01:01 浏览: 136
你好,以下是一个基于stm32f103c8t6的串口通信程序示例:
#include "stm32f10x.h"
void USART1_Init(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &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_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
}
void USART1_SendChar(char ch)
{
while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
USART_SendData(USART1, (uint16_t)ch);
}
void USART1_SendString(char* str)
{
while (*str)
{
USART1_SendChar(*str++);
}
}
char USART1_ReceiveChar(void)
{
while (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);
return (char)USART_ReceiveData(USART1);
}
int main(void)
{
USART1_Init();
while (1)
{
char ch = USART1_ReceiveChar();
USART1_SendChar(ch);
}
}
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