为什么我的蓝牙模块接收到数据发送给单片机以后，单片机读不到

迷路的麋鹿 · 发表于 2017-3-19 17:14:44

本帖最后由迷路的麋鹿于 2017-3-20 15:51 编辑

为什么我的蓝牙模块接收到数据发送给单片机以后，单片机读不到
#include "stm32f10x_exti.h"
#include "stm32f10x_usart.h"
#include "stm32f10x_rcc.h"
#include "stm32f10x_tim.h"
#include "stm32f10x_usart.h"
#include "misc.h"

void USART_RCC_Configuration(void)
{
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
}
void USART_GPIO_Configuration(void)
{
      GPIO_InitTypeDef GPIO_InitStructure;

      GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9;
      GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;
      GPIO_Init(GPIOA,&GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin=GPIO_Pin_10;
      GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
      GPIO_Init(GPIOA,&GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin=GPIO_Pin_All;
      GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
      GPIO_Init(GPIOB,&GPIO_InitStructure);
}

void USART_NVIC_Configuration(void)
{
      NVIC_InitTypeDef NVIC_InitStructure;

      NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);

      NVIC_InitStructure.NVIC_IRQChannel=USART1_IRQn;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
      NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
      NVIC_Init(&NVIC_InitStructure);
}

void USART_Configuration(void)
{
      USART_InitTypeDef USART_InitStructure;

      USART_InitStructure.USART_BaudRate=9600;
      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);
      USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
      USART_ClearFlag(USART1,USART_FLAG_TC);
}

void USART_SendStr(u8 *s)
{
      u8 i;
      for(i=0;s!=0;i++){
               USART_SendData(USART1,s);
            while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);
            USART_ClearFlag(USART1,USART_FLAG_TXE);
      }
}

#include "stm32f10x_it.h"

extern u8 temp;

void USART1_IRQHandler(void)
{
// u8 i=0;
      if(USART_GetITStatus(USART1,USART_IT_RXNE)!=RESET){
            temp=USART_ReceiveData(USART1);
//             USART_SendData(USART1,i);
//             while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);
//             USART_ClearFlag(USART1,USART_FLAG_TXE);

            USART_ClearFlag(USART1,USART_IT_RXNE);
//             GPIO_Write(GPIOB,0xaaaa);
      }
}

#include "stm32f10x.h"

void USART_Configuration(void);
void USART_NVIC_Configuration(void);
void USART_GPIO_Configuration(void);
void USART_RCC_Configuration(void);
void USART_SendStr(u8 *s);

u8 temp=0;

void Delay(u32 t)
{
      while(t--);
}

int main(void)
{
      /* 设置系统时钟为72M */
      SystemInit();
      USART_RCC_Configuration();
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
      USART_GPIO_Configuration();
      USART_NVIC_Configuration();
      USART_Configuration();

      USART_SendStr("AT+NAMEB-watch\r\n");
      Delay(6000000);
      USART_SendStr("AT\r\n");
      Delay(6000000);

      while(1){
            if(temp!=0){
                  USART_SendData(USART1,temp);
                     while(USART_GetFlagStatus(USART1,USART_FLAG_TXE)==RESET);
                     USART_ClearFlag(USART1,USART_FLAG_TXE);
                     temp=0;
            }
      }
}