麻烦问一下，串口收发数据哪里有问题，串口调试助手只有发送乱码，急

qianrushikaifa · 发表于 2017-11-21 23:08:10

#include"stm32f10x.h"
#include"string.h"
//#include"stm32f10x_it.h"

void RCC_Config();
void GPIO_Config();
void USART_Config();
void NVIC_Config();
//void Tx_string(u8*str);

//u8 buffer[]="nihao";
   u8 Txdata[100]={0xaa, 0x55 ,0x77 ,0x9a ,0x76 ,0x79 ,0x88};
   u8 length;
   u8 i;
int main(void)
{

RCC_Config();
GPIO_Config();

NVIC_Config();
USART_Config();
//Tx_string(buffer);

   length=strlen(Txdata);

   while(length--){
   if (USART_GetITStatus(USART2, USART_IT_TXE) == SET)
{
            USART_ClearITPendingBit(USART2,USART_IT_TXE);
USART_SendData(USART2,Txdata[i++]);
while(USART_GetFlagStatus(USART2,USART_FLAG_TC )==1);

}
}
while (1);       //μè′yÖD¶Ï

}

/* void  Tx_string(u8*str)
{
   u8 i;
u8 long;
long=strlen(buffer);

for(i=0;i<long;i++)
{
USART_SendData(USART2,*str++);

//while((USART2->SR&0X40)==0);//Ñ-»··￠Ëí,Ö±μ½·￠Ëííê±Ï
      //USART2->DR = *str++;

GPIO_SetBits(GPIOB,GPIO_Pin_9);
}
}*/

void RCC_Config()
{
//RCC_TypeDef RCC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);    //ê1ÄüLED4/5

RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
   GPIO_PinRemapConfig(GPIO_Remap_USART1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);

}

void  GPIO_Config()
{
GPIO_InitTypeDef GPIO_InitStructure;

//ÅäÖÃLED->D4/D5
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_9|GPIO_Pin_8;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;       //ÅäÖÃíÆíìêä3ö
GPIO_Init(GPIOB,&GPIO_InitStructure);

//ÅäÖÃTX
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_6;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;       //ÅäÖÃíÆíìêä3ö
GPIO_Init(GPIOB,&GPIO_InitStructure);

//ÅäÖÃRX
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;       //ÅäÖÃ¸¡¿Õêäèë
GPIO_Init(GPIOB,&GPIO_InitStructure);

}
void NVIC_Config()
{

NVIC_InitTypeDef  NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
//°′¼ü1ÖD¶ÏÅäÖÃKEY1->PA0
NVIC_InitStructure.NVIC_IRQChannel=USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);

}

void USART_Config()
{

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_Mode=USART_Mode_Tx|USART_Mode_Rx;
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;

USART_Init(USART1,&USART_InitStructure);
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
USART_Cmd(USART1,ENABLE);       //Ïèê1Äü′®¿ú»1êÇÏè′ò¿aÖD¶Ï￡¿

}



void  USART_IRQHandle()
{
   u8 Rxdata[100];
      u8  data,flag;

if(USART_GetITStatus(USART2,USART_IT_RXNE)!=RESET)
{
   USART_ClearITPendingBit(USART2, USART_IT_RXNE);
         Rxdata[data++]=USART_ReceiveData(USART2);
   GPIO_SetBits(GPIOB,GPIO_Pin_9);

   if(flag==1)    //μú¶t′Î½óêüêy¾YμÆáá
   {

   if(USART_GetITStatus(USART2,USART_IT_RXNE)!=RESET)

{
   USART_ClearITPendingBit(USART2, USART_IT_RXNE);
   Rxdata[data++]=USART_ReceiveData(USART2);
   GPIO_ResetBits(GPIOB,GPIO_Pin_9);

}
      }

         flag++;
}

}

随风 · 发表于 2017-11-22 09:06:12

发送了什么乱码？确认一下收发双方的波特率，要一致

qianrushikaifa · 发表于 2017-11-22 21:33:30

大佬帮忙看看程序有没问题啊

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麻烦问一下，串口收发数据哪里有问题，串口调试助手只有发送乱码，急

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