mini版串口通信

来源：互联网发布：小米网络诊断怎么关闭编辑：程序博客网时间：2024/05/22 02:46

#include "stm32f10x.h"
#include "delay.h"

void my_usart1_init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
USART_InitTypeDef  USART_InitStruct;
NVIC_InitTypeDef  NVIC_InitStruct;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);


GPIO_InitStruct.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_InitStruct.GPIO_Pin=GPIO_Pin_9;
GPIO_InitStruct.GPIO_Speed=GPIO_Speed_10MHz;
GPIO_Init(GPIOA,&GPIO_InitStruct);

GPIO_InitStruct.GPIO_Mode=GPIO_Mode_AF_PP;
GPIO_InitStruct.GPIO_Pin=GPIO_Pin_10;
GPIO_InitStruct.GPIO_Speed=GPIO_Speed_10MHz;
GPIO_Init(GPIOA,&GPIO_InitStruct);

USART_InitStruct.USART_BaudRate=115200;
USART_InitStruct.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
USART_InitStruct.USART_Mode=USART_Mode_Rx|USART_Mode_Tx;
USART_InitStruct.USART_Parity=USART_Parity_No;
USART_InitStruct.USART_StopBits=USART_StopBits_1;
USART_InitStruct.USART_WordLength=USART_WordLength_8b;
USART_Init(USART1,&USART_InitStruct);


USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);

NVIC_InitStruct.NVIC_IRQChannel=USART1_IRQn;
NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=1;
NVIC_InitStruct.NVIC_IRQChannelSubPriority=1;
NVIC_Init(&NVIC_InitStruct);

USART_Cmd(USART1,ENABLE);


}

void USARTx_IRQHandler(void)
{
u8 res;
  if(USART_GetITStatus(USART1,USART_IT_RXNE))
{
   res=USART_ReceiveData(USART1);
   delay_ms(10);
   USART_SendData(USART1,res);

}
}

int main(void)
{
   NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
my_usart1_init();
   delay_init();
   while(1);

}

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