STM32 HAL Implementando UART recibe la interrupción

1

Tengo problemas para implementar el RX USART en un stm32f303k8t6 con las bibliotecas HAL. Lo que realmente quiero lograr es que puedo enviar una cadena de longitud variable a través del bus uart y descodificar la cadena, que en realidad es un par clave / valor. Lo que he intentado hasta ahora es lo siguiente: Recibo una interrupción por cada carácter recibido y mientras no sea un signo '$', está cargando un búfer. Pero de alguna manera, la función de interrupción solo se llama una vez, y no entiendo por qué. De todos modos me gustaría usar las funciones de devolución de llamada de HAL, pero nunca se llaman.

stm32f3xx_it.c

void USART1_IRQHandler(void)
{
    /* USER CODE BEGIN USART1_IRQn 0 */
    if (USART1->ISR & UART_IT_RXNE) {
        isRx=1;
    }
    /* USER CODE END USART1_IRQn 0 */
    HAL_UART_IRQHandler(&huart1);
    /* USER CODE BEGIN USART1_IRQn 1 */
    if(isRx) {
        uint8_t rbyte = huart1.Instance->RDR;
        __HAL_UART_SEND_REQ(&huart1, UART_RXDATA_FLUSH_REQUEST);
        rx_data[pointer]=rbyte;
        if(rx_data[pointer]=='$') {
              rx_data[pointer]='
#include "main.h"
    #include "stm32f3xx_hal.h"

    /* USER CODE BEGIN Includes */
    #include "USART.h"

    /* USER CODE END Includes */

    /* Private variables ---------------------------------------------------------*/
    UART_HandleTypeDef huart1;

    /* USER CODE BEGIN PV */
    /* Private variables ---------------------------------------------------------*/
    char rx_buff[32];
    char rx_data[32];
    /* USER CODE END PV */
    uint8_t aRxBuffer[10];
    /* Private function prototypes -----------------------------------------------*/
    void SystemClock_Config(void);
    static void MX_GPIO_Init(void);
    static void MX_USART1_UART_Init(void);

    /* USER CODE BEGIN PFP */
    /* Private function prototypes -----------------------------------------------*/

    /* USER CODE END PFP */

    /* USER CODE BEGIN 0 */

    /* USER CODE END 0 */

    int main(void)
    {

    /* USER CODE BEGIN 1 */

    /* USER CODE END 1 */

    /* MCU Configuration----------------------------------------------------------*/

    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    HAL_Init();

    /* USER CODE BEGIN Init */

    /* USER CODE END Init */

    /* Configure the system clock */
    SystemClock_Config();

    /* USER CODE BEGIN SysInit */

    /* USER CODE END SysInit */

    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_USART1_UART_Init();

    /* USER CODE BEGIN 2 */
    //__HAL_UART_ENABLE_IT(&huart1,UART_IT_RXNE);
    HAL_UART_Receive_IT(&huart1, (uint8_t *)aRxBuffer, 10);
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while (1)
    {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */

    }
    /* USER CODE END 3 */

    }

    /** System Clock Configuration
    */
    void SystemClock_Config(void)
    {

    RCC_OscInitTypeDef RCC_OscInitStruct;
    RCC_ClkInitTypeDef RCC_ClkInitStruct;
    RCC_PeriphCLKInitTypeDef PeriphClkInit;

    /**Initializes the CPU, AHB and APB busses clocks
    */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSICalibrationValue = 16;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
    _Error_Handler(__FILE__, __LINE__);
    }

    /**Initializes the CPU, AHB and APB busses clocks
    */
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
    {
    _Error_Handler(__FILE__, __LINE__);
    }

    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;
    PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    {
    _Error_Handler(__FILE__, __LINE__);
    }

    /**Configure the Systick interrupt time
    */
    HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

    /**Configure the Systick
    */
    HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

    /* SysTick_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
    }

    /* USART1 init function */
    static void MX_USART1_UART_Init(void)
    {

    huart1.Instance = USART1;
    huart1.Init.BaudRate = 57600;
    huart1.Init.WordLength = UART_WORDLENGTH_8B;
    huart1.Init.StopBits = UART_STOPBITS_1;
    huart1.Init.Parity = UART_PARITY_NONE;
    huart1.Init.Mode = UART_MODE_TX_RX;
    huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart1.Init.OverSampling = UART_OVERSAMPLING_16;
    huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
    huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
    if (HAL_UART_Init(&huart1) != HAL_OK)
    {
    _Error_Handler(__FILE__, __LINE__);
    }

    }

    /** Pinout Configuration
    */
    static void MX_GPIO_Init(void)
    {

    /* GPIO Ports Clock Enable */
    __HAL_RCC_GPIOA_CLK_ENABLE();

    }

    /* USER CODE BEGIN 4 */
    void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {

    }
    /* USER CODE END 4 */

    /**
    * @brief  This function is executed in case of error occurrence.
    * @param  None
    * @retval None
    */
    void _Error_Handler(char * file, int line)
    {
    /* USER CODE BEGIN Error_Handler_Debug */
    /* User can add his own implementation to report the HAL error return state */
    while(1)
    {
    }
    /* USER CODE END Error_Handler_Debug */
    }

    #ifdef USE_FULL_ASSERT

    /**
    * @brief Reports the name of the source file and the source line number
    * where the assert_param error has occurred.
    * @param file: pointer to the source file name
    * @param line: assert_param error line source number
    * @retval None
    */
    void assert_failed(uint8_t* file, uint32_t line)
    {
    /* USER CODE BEGIN 6 */
    /* 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) */
    /* USER CODE END 6 */

    }

    #endif
'; pointer=0; copyValuesToBuff(); clearBuffer(&rx_data,32); } else { pointer++; if(pointer>=32) { pointer=0; } } __HAL_UART_ENABLE_IT(&huart1,UART_IT_RXNE); } }

main.c

void USART1_IRQHandler(void)
{
    /* USER CODE BEGIN USART1_IRQn 0 */
    if (USART1->ISR & UART_IT_RXNE) {
        isRx=1;
    }
    /* USER CODE END USART1_IRQn 0 */
    HAL_UART_IRQHandler(&huart1);
    /* USER CODE BEGIN USART1_IRQn 1 */
    if(isRx) {
        uint8_t rbyte = huart1.Instance->RDR;
        __HAL_UART_SEND_REQ(&huart1, UART_RXDATA_FLUSH_REQUEST);
        rx_data[pointer]=rbyte;
        if(rx_data[pointer]=='$') {
              rx_data[pointer]='
#include "main.h"
    #include "stm32f3xx_hal.h"

    /* USER CODE BEGIN Includes */
    #include "USART.h"

    /* USER CODE END Includes */

    /* Private variables ---------------------------------------------------------*/
    UART_HandleTypeDef huart1;

    /* USER CODE BEGIN PV */
    /* Private variables ---------------------------------------------------------*/
    char rx_buff[32];
    char rx_data[32];
    /* USER CODE END PV */
    uint8_t aRxBuffer[10];
    /* Private function prototypes -----------------------------------------------*/
    void SystemClock_Config(void);
    static void MX_GPIO_Init(void);
    static void MX_USART1_UART_Init(void);

    /* USER CODE BEGIN PFP */
    /* Private function prototypes -----------------------------------------------*/

    /* USER CODE END PFP */

    /* USER CODE BEGIN 0 */

    /* USER CODE END 0 */

    int main(void)
    {

    /* USER CODE BEGIN 1 */

    /* USER CODE END 1 */

    /* MCU Configuration----------------------------------------------------------*/

    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    HAL_Init();

    /* USER CODE BEGIN Init */

    /* USER CODE END Init */

    /* Configure the system clock */
    SystemClock_Config();

    /* USER CODE BEGIN SysInit */

    /* USER CODE END SysInit */

    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_USART1_UART_Init();

    /* USER CODE BEGIN 2 */
    //__HAL_UART_ENABLE_IT(&huart1,UART_IT_RXNE);
    HAL_UART_Receive_IT(&huart1, (uint8_t *)aRxBuffer, 10);
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while (1)
    {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */

    }
    /* USER CODE END 3 */

    }

    /** System Clock Configuration
    */
    void SystemClock_Config(void)
    {

    RCC_OscInitTypeDef RCC_OscInitStruct;
    RCC_ClkInitTypeDef RCC_ClkInitStruct;
    RCC_PeriphCLKInitTypeDef PeriphClkInit;

    /**Initializes the CPU, AHB and APB busses clocks
    */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSICalibrationValue = 16;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
    _Error_Handler(__FILE__, __LINE__);
    }

    /**Initializes the CPU, AHB and APB busses clocks
    */
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
    {
    _Error_Handler(__FILE__, __LINE__);
    }

    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;
    PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    {
    _Error_Handler(__FILE__, __LINE__);
    }

    /**Configure the Systick interrupt time
    */
    HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

    /**Configure the Systick
    */
    HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

    /* SysTick_IRQn interrupt configuration */
    HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
    }

    /* USART1 init function */
    static void MX_USART1_UART_Init(void)
    {

    huart1.Instance = USART1;
    huart1.Init.BaudRate = 57600;
    huart1.Init.WordLength = UART_WORDLENGTH_8B;
    huart1.Init.StopBits = UART_STOPBITS_1;
    huart1.Init.Parity = UART_PARITY_NONE;
    huart1.Init.Mode = UART_MODE_TX_RX;
    huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart1.Init.OverSampling = UART_OVERSAMPLING_16;
    huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
    huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
    if (HAL_UART_Init(&huart1) != HAL_OK)
    {
    _Error_Handler(__FILE__, __LINE__);
    }

    }

    /** Pinout Configuration
    */
    static void MX_GPIO_Init(void)
    {

    /* GPIO Ports Clock Enable */
    __HAL_RCC_GPIOA_CLK_ENABLE();

    }

    /* USER CODE BEGIN 4 */
    void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {

    }
    /* USER CODE END 4 */

    /**
    * @brief  This function is executed in case of error occurrence.
    * @param  None
    * @retval None
    */
    void _Error_Handler(char * file, int line)
    {
    /* USER CODE BEGIN Error_Handler_Debug */
    /* User can add his own implementation to report the HAL error return state */
    while(1)
    {
    }
    /* USER CODE END Error_Handler_Debug */
    }

    #ifdef USE_FULL_ASSERT

    /**
    * @brief Reports the name of the source file and the source line number
    * where the assert_param error has occurred.
    * @param file: pointer to the source file name
    * @param line: assert_param error line source number
    * @retval None
    */
    void assert_failed(uint8_t* file, uint32_t line)
    {
    /* USER CODE BEGIN 6 */
    /* 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) */
    /* USER CODE END 6 */

    }

    #endif
'; pointer=0; copyValuesToBuff(); clearBuffer(&rx_data,32); } else { pointer++; if(pointer>=32) { pointer=0; } } __HAL_UART_ENABLE_IT(&huart1,UART_IT_RXNE); } }
    
pregunta HansPeterLoft

1 respuesta

0

Con una mirada rápida veo dos problemas potenciales. 1. Debe colocar HAL_UART_Receive_ITinside en el super loop. 2. El manejador de IRQ debe mantenerse corto. Lo que desea hacer es poner el código en la función HAL_UART_RxCpltCallback que se ejecutará después de cada RX.

Es una buena idea tratar de usar algunos ejemplos del cubo STM32.

    
respondido por el Satrapes

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