stm32f407 串口调试助手的问题

只看该作者 · 2014-3-18 23:34

本帖最后由 624773416 于 2014-3-19 09:11 编辑

本人新手，请问怎么让stm32f407和PC机实现通讯呢？

我打开“串口调试助手”总是提示错误：

程序：
#include <stm32f4xx.h>
#include "stm32f4xx_rcc.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_adc.h"
#include "stm32f4xx_conf.h"
#include "stm32f4_discovery.h"
#include <stdio.h>

ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

void NVIC_Config()
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x03;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;
NVIC_InitStructure.NVIC_IRQChannel  = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
            NVIC_Init(&NVIC_InitStructure);
}

void USART_Gpio_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOB  , ENABLE);

//PB6->TX  PB7->Rx
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);

GPIO_PinAFConfig(GPIOB,GPIO_PinSource6,GPIO_AF_USART1);
GPIO_PinAFConfig(GPIOB,GPIO_PinSource7,GPIO_AF_USART1);
}

void USART_Config(void)
{
      USART_Gpio_Config();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);

USART_InitStructure.USART_BaudRate = 115200;
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_ITConfig(USART1,USART_IT_RXNE,ENABLE);

USART_Cmd(USART1,ENABLE);

}

void USART1_IRQHandler(void)
{
char c;
if(USART_GetFlagStatus(USART1,USART_FLAG_RXNE)==SET)
{
      c = USART_ReceiveData(USART1);
      USART_SendData(USART1,c);
}
      //while(1);
}

void Delay(int i)
{
      int x,j;
      for(j=0;j<i;j++)
         for(x=0;x<=200;x++);
}

int main(void)
{
NVIC_Config();
USART_Config();
while(1)
{
      while(RESET == USART_GetFlagStatus(USART1,USART_FLAG_TXE));
      USART_SendData(USART1,'b');
      while(RESET == USART_GetFlagStatus(USART1,USART_FLAG_TXE));
      USART_SendData(USART1,'a');
      Delay(1000);
}
}

十分困惑，谢谢指导！  在线等