串口通讯控制led亮灭，发送1led亮，发送0led灭，现在不起作用，恳请各位大神指导一下。

piaoyizhizhou · 发表于 2017-10-27 15:20:49

/*主函数*/
#include "stm32f10x.h"
#include "led.h"
#include "beep.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "usart.h"

//void MyusartInit(void);
int main(void)
{

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
MyusartInit();
LED_Init();

while(1);
}

/*串口初试化和中断函数*/
#include "usart.h"
#include "sys.h"
#include "stm32f10x.h"
#include "led.h"
#include "delay.h"

void MyusartInit(void)
{
   GPIO_InitTypeDef GPIO_InitStruct;
   USART_InitTypeDef USART_InitStruct;
NVIC_InitTypeDef NVIC_InitStruct;
//ê1Äüê±Öó
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);

//GPIO3õê¼»ˉ
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);

//′®¿ú3õê¼»ˉ
USART_InitStruct.USART_BaudRate=115200;
USART_InitStruct.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
USART_InitStruct.USART_Mode=USART_Mode_Tx|USART_Mode_Rx;
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);//ê1Äü′®¿ú1

//¿aÆô½óêÕÖD¶Ï
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);

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

void USART1_IRQHandler(void)
{

u8 res = NULL;

if(USART_GetITStatus(USART1,USART_IT_RXNE))
{
res=USART_ReceiveData(USART1);
//USART_SendData(USART1,res);
if(res=='1')
{
printf("LED1(ON)");
LED0;
delay_ms(1000);
}
else if(res=='0')
{
printf("LED1(ON)");
GPIO_SetBits(GPIOB,GPIO_Pin_5);
delay_ms(1000);

}

}
}