Nucleo F303k8串口调试能发送，但是不能接收
新买了一块Nucleo F303k8，调试串口：MDK 5.18 使用HAL库开发。下载了STM32CubeF3，里面有F303K8的串口例程。
根据串口的例程，自己写了一个，使用中断方式处理串口。
问题描述：
（1）字符串发送正常，用串口助手都能收到，会进入中断函数USARTx_IRQHandler；
（2）通过串口助手发送的字符没有任何反应，程序不进入中断函数USARTx_IRQHandler，也不会进入回调函数HAL_UART_RxCpltCallback
（3）怀疑过串口芯片的问题，但是用我自己焊的线路板和买的串口线路板都是一样的情况。
搞了两天了，求高手指点！
谢谢！
具体代码如下：
main.c 文件
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F3xx_HAL_Examples
* @{
*/
/** @addtogroup UART_TwoBoards_ComIT
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define TRANSMITTER_BOARD
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* UART handler declaration */
UART_HandleTypeDef UartHandle;
__IO ITStatus UartReady = RESET;
/* Buffer used for transmission */
uint8_t aTxBuffer[] = " ****UART_TwoBoards_ComIT****";
/* Buffer used for reception */
//uint8_t aRxBuffer="";
uint8_t TxBuffer;//?????
uint8_t aRxBuffer;
uint8_t RxBuffer;
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void Error_Handler(void);
static uint16_t Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);
int main(void)
{
HAL_Init();
/* Configure the system clock to 64 MHz */
SystemClock_Config();
/* Configure LED3 */
BSP_LED_Init(LED3);
UartHandle.Instance = USARTx;//库文件中又宏定义的，USARTx=USART1
UartHandle.Init.BaudRate = 9600;
UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
UartHandle.Init.StopBits = UART_STOPBITS_1;
UartHandle.Init.Parity = UART_PARITY_NONE;
UartHandle.Init.HwFlowCtl= UART_HWCONTROL_NONE;
UartHandle.Init.Mode = UART_MODE_TX_RX;
UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if(HAL_UART_DeInit(&UartHandle) != HAL_OK)
{
Error_Handler();
}
if(HAL_UART_Init(&UartHandle) != HAL_OK)
{
Error_Handler();
}
BSP_LED_Off(LED3);
if(HAL_UART_Transmit_IT(&UartHandle, (uint8_t*)aTxBuffer, TXBUFFERSIZE)!= HAL_OK)
{
Error_Handler();
}
while (UartReady != SET)
{
}
UartReady = RESET;
if(HAL_UART_Receive_IT(&UartHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE) != HAL_OK)Error_Handler();
while (1)
{
}
}
/**
* @briefSystem Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSI)
* SYSCLK(Hz) = 64000000
* HCLK(Hz) = 64000000
* AHB Prescaler = 1
* APB1 Prescaler = 2
* APB2 Prescaler = 1
* PLLMUL = RCC_PLL_MUL16 (16)
* Flash Latency(WS) = 2
* @paramNone
* @retval None
*/
void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
/* HSI Oscillator already ON after system reset, activate PLL with HSI as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_NONE;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL16;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct)!= HAL_OK)
{
/* Initialization Error */
while(1);
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2)!= HAL_OK)
{
/* Initialization Error */
while(1);
}
}
/**
* @briefTx Transfer completed callback
* @paramUartHandle: UART handle.
* @note This example shows a simple way to report end of IT Tx transfer, and
* you can add your own implementation.
* @retval None
*/
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *UartHandle)
{
/* Set transmission flag: transfer complete */
BSP_LED_On(LED3); //测试进入了发送回调函数
UartReady = SET;
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)
{
BSP_LED_Off(LED3); //测试进入了接收回调函数
RxBuffer='u'; //测试，只要进入此回调函数，就发送“uvx”
RxBuffer='v';
RxBuffer='x';
RxBuffer=0;
HAL_UART_Transmit(UartHandle,RxBuffer,3,1);
UartReady = SET;
}
void HAL_UART_ErrorCallback(UART_HandleTypeDef *UartHandle)
{
Error_Handler();
}
static uint16_t Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)
{
while (BufferLength--)
{
if ((*pBuffer1) != *pBuffer2)
{
return BufferLength;
}
pBuffer1++;
pBuffer2++;
}
return 0;
}
static void Error_Handler(void)
{
/* Turn LED3 on */
BSP_LED_On(LED3);
while(1)
{
/* Error if LED3 is slowly blinking (1 sec. period) */
BSP_LED_Toggle(LED3);
HAL_Delay(1000);
}
}
#ifdefUSE_FULL_ASSERT
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
void USARTx_IRQHandler(void) //中断函数
{
HAL_UART_IRQHandler(&UartHandle);
}
自己顶！:lol
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