#include "stm32f10x.h"
#include <delay.h>
#include <led.h>
void My_USART1_Init(void)
{
USART_InitTypeDef USART_InitStruct;
GPIO_InitTypeDef GPIO_InitStruct;
NVIC_InitTypeDef NVIC_InitStruct;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 , ENABLE);
GPIO_InitStruct.GPIO_Mode=GPIO_Mode_AF_PP;
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_IN_FLOATING;
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_Cmd(USART1, ENABLE);
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);
}
void USART1_IRQHandler(void)
{u8 res;
if(USART_GetITStatus(USART1, USART_IT_RXNE))
{res=USART_ReceiveData(USART1);
USART_SendData(USART1, res);
GPIO_ResetBits(GPIOF,GPIO_Pin_7);
}
}
int main(void)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2 )；
My_USART1_Init();
LED_GPIO_Config();
while(1);
}
|
