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听上去就是软件的问题啊

/* Define to prevent recursive inclusion -------------------------------------*/

#ifndef __initialize_H

#define __initialize_H

/* Includes ------------------------------------------------------------------*/

#include "stm32f0xx.h"

/* Exported functions --------------------------------------------------------*/

//extern uint16_t USART1_BaudRate;

uint32_t USART1_BaudRate = 115200;

#define CON1 GPIO_Pin_4

#define CON2 GPIO_Pin_5

#define CON3 GPIO_Pin_6

#define CON4 GPIO_Pin_7

#define LED GPIO_Pin_3

/******************************************************************************

* Function Name: GPIO_InitConfig

* Description: GPIO配置

* Input: None

* Output: None

* Return: None

* Attention: None

******************************************************************************/

void GPIO_InitConfig(void)

{

GPIO_InitTypeDef GPIO_InitStruct;

RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA, ENABLE);

GPIO_InitStruct.GPIO_Pin = GPIO_Pin_13;

GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT;

GPIO_InitStruct.GPIO_OType = GPIO_OType_OD;

GPIO_InitStruct.GPIO_Speed =GPIO_Speed_Level_1;

GPIO_Init(GPIOA, &GPIO_InitStruct);

GPIO_InitStruct.GPIO_Pin = CON1 | CON2 | CON3 | CON4;

GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;

GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;

GPIO_InitStruct.GPIO_Speed =GPIO_Speed_Level_3;

GPIO_Init(GPIOA, &GPIO_InitStruct);

}

/******************************************************************************

* Function Name: USART_InitConfig

* Description: USART配置

* Input: None

* Output: None

* Return: None

* Attention: None

******************************************************************************/

void USART_InitConfig(void)

{

GPIO_InitTypeDef GPIO_InitStructure;

USART_InitTypeDef USART_InitStructure;

NVIC_InitTypeDef NVIC_InitStructure;

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_1);

GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_1);

/*

* USART1_TX -> PA9 , USART1_RX ->PA10

*/

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;

GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOA, &GPIO_InitStructure);

USART_InitStructure.USART_BaudRate = USART1_BaudRate;

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_DirectionModeCmd(USART1, USART_Mode_Rx, ENABLE);

//USART_RequestCmd(USART1,USART_Request_RXFRQ,ENABLE);

USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);

USART_ITConfig(USART1, USART_IT_TXE, DISABLE);

/*Enable the USART1 Interrupt(使能USART1中断)*/

NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPriority = 4;

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);

}

/******************************************************************************

* Function Name: System_InitConfig

* Description: 系统配置

* Input: None

* Output: None

* Return: None

* Attention: None

******************************************************************************/

void System_InitConfig(void)

{

//PLL_InitConfig();

GPIO_InitConfig();

USART_InitConfig();

}

#endif

/* Includes ------------------------------------------------------------------*/

//#include "main.h"

#include "stm32f0xx.h"

#include "initialize.h"

/* Private typedef -----------------------------------------------------------*/

char count = 0;

/* Private define ------------------------------------------------------------*/

uint8_tID0[10]={0xEB,0x90,0x04,0x55,0x00,0x00,0x00,0xBD,0x52};

uint8_tID1[10]={0xEB,0x90,0x04,0x55,0x01,0x00,0x00,0xEC,0x92};

uint8_tID2[10]={0xEB,0x90,0x04,0x55,0x02,0x00,0x00,0x1C,0x52};

uint8_tID3[10]={0xEB,0x90,0x04,0x55,0x03,0x00,0x00,0x4D,0x52};

uint8_tID4[10]={0xEB,0x90,0x04,0x55,0x04,0x00,0x00,0xFC,0x93};

uint8_tID5[10]={0xEB,0x90,0x04,0x55,0x05,0x00,0x00,0xAD,0x53};

uint8_tID6[10]={0xEB,0x90,0x04,0x55,0x06,0x00,0x00,0x5D,0x53};

uint8_tID7[10]={0xEB,0x90,0x04,0x55,0x07,0x00,0x00,0x0C,0x93};

uint8_tID8[10]={0xEB,0x90,0x04,0x55,0x08,0x00,0x00,0x3C,0x90};

uint8_tID9[10]={0xEB,0x90,0x04,0x55,0x09,0x00,0x00,0x6D,0x50};

uint16_t temp;

/* Private macro -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* Private function prototypes -----------------------------------------------*/

void Delay_us(__IO uint32_t nCount);

void Delay_ms(__IO uint32_t nCount);

void USART1_TX_Data(uint8_t *pData,uint16_t TX_NumByte);

/* Private functions ---------------------------------------------------------*/

/******************************************************************************

* Function Name: main

* Description: 主程序

* Input: None

* Output: None

* Return: None

* Attention: None

******************************************************************************/

int main(void)

{

System_InitConfig();

Delay_ms(500);

while (1)

{

temp = GPIO_ReadInputData(GPIOA);

temp = temp & 0x00f0;

temp = temp >> 4;

switch(temp)

{

case 0:{ USART1_TX_Data(ID0,9);}break;//USART打印输出

case 1:{ USART1_TX_Data(ID1,9);}break;

case 2:{ USART1_TX_Data(ID2,9);}break;

case 3:{ USART1_TX_Data(ID3,9);}break;

case 4:{ USART1_TX_Data(ID4,9);}break;

case 5:{ USART1_TX_Data(ID5,9);}break;

case 6:{ USART1_TX_Data(ID6,9);}break;

case 7:{ USART1_TX_Data(ID7,9);}break;

case 8:{ USART1_TX_Data(ID8,9);}break;

case 9:{ USART1_TX_Data(ID9,9);}break;

}

if(GPIO_ReadOutputDataBit(GPIOA, LED))

{GPIO_ResetBits(GPIOA, LED);}

else

{GPIO_SetBits(GPIOA, LED);}

/* 延迟100mS*/

Delay_ms(100);

}

}

/******************************************************************************

* Function Name: Delay | Delay_us

* Description: 延迟程序

* Input: nCount: 延时长度

* Output: None

* Return: None

* Attention: None

******************************************************************************/

void Delay(__IO uint32_t nCount)

{

/* Decrement nCount value */

while (nCount != 0)

{

nCount--;

}

}

void Delay_us(__IO uint32_t nCount)

{

/* 10uS延迟=>10.8uS,100uS延迟=>104uS*/

while (nCount != 0)

{

nCount--;

Delay(10);

}

}

void Delay_ms(__IO uint32_t nCount)

{

/* 10uS延迟=>10.8uS,100uS延迟=>104uS*/

while (nCount != 0)

{

nCount--;

Delay(11000);

}

}

/******************************************************************************

* Function Name: USART1_TX_Data

* Description: USART1数据发送

* Input: -pData：USART1发送数据

-TX_NumByte：发送数据数

* Output: None

* Return: None

* Attention: None

******************************************************************************/

void USART1_TX_Data(uint8_t *pData,uint16_t TX_NumByte)

{

uint16_t i;

for(i=0;i

{

USART_SendData(USART1,*pData++);

#if(USART1_BaudRate==115200)

Delay_us(90);

#endif

#if(USART1_BaudRate==19200)

Delay_us(500);

#endif

#if(USART1_BaudRate==9600)

Delay_us(1000);

#endif

}//for

}//void

/******************************************************************************

* Function Name: USART1_IRQHandler

* Description: USART1中断接收

* Input: None

* Output: None

* Return: None

* Attention: None

******************************************************************************/

void USART1_IRQHandler(void)

{

if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)

{

USART_SendData(USART1,USART_ReceiveData(USART1));//读取UART1接收到的数据并输出

}

}

我这里面一共就用了5个io和1个串口，我的程序也就是初始化一下这5个IO和串口

这程序全贴出来也没多少行啊

试试挂个外部晶振，看看STLINK能不能连的上。

感谢各位关注！我找到毛病了，我本来想初始化PA3口，结果给写成PA13了，相当于禁用SW调试了。