In short, I was unable to link the two Nucleo boards using SPI. Now I try to do it on a single board, where SPI1 is the master and SPI2 is the slave. Here is the code:
This is main.c:
/* Includes ------------------------------------------------------------------*/ #include "main.h" #include "stm32l1xx_hal.h" #include "cmsis_os.h" /* USER CODE BEGIN Includes */ #include "FreeRtOSConfig.h" #include "FreeRTOS.h" #include "task.h" #define mainQUEUE_SEND_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 ) /* USER CODE END Includes */ /* Private variables ---------------------------------------------------------*/ SPI_HandleTypeDef hspi1; SPI_HandleTypeDef hspi2; UART_HandleTypeDef huart2; osThreadId defaultTaskHandle; /* USER CODE BEGIN PV */ /* Private variables ---------------------------------------------------------*/ static QueueHandle_t xQueue = NULL; TaskHandle_t xHandle_SPI1; TaskHandle_t xHandle_SPI2; int SPIflag=0; /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); static void MX_GPIO_Init(void); static void MX_USART2_UART_Init(void); static void MX_SPI1_Init(void); static void MX_SPI2_Init(void); void StartDefaultTask(void const * argument); /* USER CODE BEGIN PFP */ /* Private function prototypes -----------------------------------------------*/ extern void prvSPI1Task ( void *pvParameters ); extern void prvSPI2Task ( void *pvParameters ); /* USER CODE END PFP */ /* USER CODE BEGIN 0 */ /* USER CODE END 0 */ /** * @brief The application entry point. * * @retval None */ 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_USART2_UART_Init(); MX_SPI1_Init(); MX_SPI2_Init(); /* USER CODE BEGIN 2 */ /* USER CODE END 2 */ /* USER CODE BEGIN RTOS_MUTEX */ /* add mutexes, ... */ /* USER CODE END RTOS_MUTEX */ /* USER CODE BEGIN RTOS_SEMAPHORES */ /* add semaphores, ... */ /* USER CODE END RTOS_SEMAPHORES */ /* USER CODE BEGIN RTOS_TIMERS */ /* start timers, add new ones, ... */ /* USER CODE END RTOS_TIMERS */ /* Create the thread(s) */ /* definition and creation of defaultTask */ //osThreadDef(defaultTask, StartDefaultTask, osPriorityNormal, 0, 128); //defaultTaskHandle = osThreadCreate(osThread(defaultTask), NULL); /* USER CODE BEGIN RTOS_THREADS */ /* add threads, ... */ /* USER CODE END RTOS_THREADS */ /* USER CODE BEGIN RTOS_QUEUES */ /* add queues, ... */ /* USER CODE END RTOS_QUEUES */ /* Start scheduler */ //osKernelStart(); /* We should never get here as control is now taken by the scheduler */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ //while (1) //{ /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ uint8_t Task1ErrorMessage[]="Firts task was *not* created successfully.\n\r"; uint8_t Task2ErrorMessage[]="Second task was *not* created successfully.\n\r"; xQueue = xQueueCreate( 1, sizeof( uint32_t ) ); if( xQueue != NULL ){ if( xTaskCreate(prvSPI1Task, "SPI1", configMINIMAL_STACK_SIZE, NULL, mainQUEUE_SEND_TASK_PRIORITY, &xHandle_SPI1) != pdPASS){ HAL_UART_Transmit(&huart2, Task1ErrorMessage, 50, 100 ); }else{ //vTaskSuspend( xHandle_ADC ); } if( xTaskCreate(prvSPI2Task, "SPI2", configMINIMAL_STACK_SIZE, NULL, mainQUEUE_SEND_TASK_PRIORITY, &xHandle_SPI2) != pdPASS){ HAL_UART_Transmit(&huart2, Task2ErrorMessage, 50, 100 ); }else{ //vTaskSuspend( xHandle_ADC ); } } vTaskStartScheduler(); while(1); //} /* USER CODE END 3 */ } /** * @brief System Clock Configuration * @retval None */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; /**Configure the main internal regulator output voltage */ __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); /**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_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL4; RCC_OscInitStruct.PLL.PLLDIV = RCC_PLL_DIV2; 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_PLLCLK; 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_1) != 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, 15, 0); } /* SPI1 init function */ static void MX_SPI1_Init(void) { /* SPI1 parameter configuration*/ hspi1.Instance = SPI1; hspi1.Init.Mode = SPI_MODE_MASTER; hspi1.Init.Direction = SPI_DIRECTION_2LINES; hspi1.Init.DataSize = SPI_DATASIZE_8BIT; hspi1.Init.CLKPolarity = SPI_POLARITY_LOW; hspi1.Init.CLKPhase = SPI_PHASE_1EDGE; hspi1.Init.NSS = SPI_NSS_HARD_INPUT; hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2; hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB; hspi1.Init.TIMode = SPI_TIMODE_DISABLE; hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; hspi1.Init.CRCPolynomial = 10; if (HAL_SPI_Init(&hspi1) != HAL_OK){ _Error_Handler(__FILE__, __LINE__); } } /* SPI2 init function */ static void MX_SPI2_Init(void) { /* SPI2 parameter configuration*/ hspi2.Instance = SPI2; hspi2.Init.Mode = SPI_MODE_SLAVE; hspi2.Init.Direction = SPI_DIRECTION_2LINES; hspi2.Init.DataSize = SPI_DATASIZE_8BIT; hspi2.Init.CLKPolarity = SPI_POLARITY_LOW; hspi2.Init.CLKPhase = SPI_PHASE_1EDGE; hspi2.Init.NSS = SPI_NSS_HARD_INPUT; hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB; hspi2.Init.TIMode = SPI_TIMODE_DISABLE; hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; hspi2.Init.CRCPolynomial = 10; if (HAL_SPI_Init(&hspi2) != HAL_OK){ _Error_Handler(__FILE__, __LINE__); } } /* USART2 init function */ static void MX_USART2_UART_Init(void) { huart2.Instance = USART2; huart2.Init.BaudRate = 9600; huart2.Init.WordLength = UART_WORDLENGTH_8B; huart2.Init.StopBits = UART_STOPBITS_1; huart2.Init.Parity = UART_PARITY_NONE; huart2.Init.Mode = UART_MODE_TX_RX; huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart2.Init.OverSampling = UART_OVERSAMPLING_16; if (HAL_UART_Init(&huart2) != HAL_OK){ _Error_Handler(__FILE__, __LINE__); } } /** Configure pins as * Analog * Input * Output * EVENT_OUT * EXTI */ static void MX_GPIO_Init(void) { /* GPIO Ports Clock Enable */ __HAL_RCC_GPIOH_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOB_CLK_ENABLE(); } /* USER CODE BEGIN 4 */ /* USER CODE END 4 */ /* StartDefaultTask function */ void StartDefaultTask(void const * argument) { /* USER CODE BEGIN 5 */ /* Infinite loop */ for(;;){ osDelay(1); } /* USER CODE END 5 */ } /** * @brief Period elapsed callback in non blocking mode * @note This function is called when TIM6 interrupt took place, inside * HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment * a global variable "uwTick" used as application time base. * @param htim : TIM handle * @retval None */ void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) { /* USER CODE BEGIN Callback 0 */ /* USER CODE END Callback 0 */ if (htim->Instance == TIM6) { HAL_IncTick(); } /* USER CODE BEGIN Callback 1 */ /* USER CODE END Callback 1 */ } /** * @brief This function is executed in case of error occurrence. * @param file: The file name as string. * @param line: The line in file as a number. * @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, tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ /* USER CODE END 6 */ } #endif /* USE_FULL_ASSERT */ This is SPI1Task:
#include "main.h" #include "stm32l1xx_hal.h" #include "cmsis_os.h" /* USER CODE BEGIN Includes */ #include "FreeRtOSConfig.h" #include "FreeRTOS.h" #include "task.h" extern SPI_HandleTypeDef hspi1; extern UART_HandleTypeDef huart2; extern int SPIflag; void prvSPI1Task ( void *pvParameters ) { while(1){ //HAL_UART_Transmit( &huart2, "Send SPI 123456\r\n", 17, 100); HAL_SPI_Transmit( &hspi1, "SPI 123456", 11, 100); vTaskDelay(500); //HAL_UART_Transmit( &huart2, "Received : ", 11, 100); //HAL_UART_Transmit( &huart2, ReceiveBuf, 11, 100); //HAL_UART_Transmit( &huart2, "\r\n", 2, 100); } } This is SPI2Task:
#include "main.h" #include "stm32l1xx_hal.h" #include "cmsis_os.h" /* USER CODE BEGIN Includes */ #include "FreeRtOSConfig.h" #include "FreeRTOS.h" #include "task.h" extern SPI_HandleTypeDef hspi2; extern UART_HandleTypeDef huart2; extern int SPIflag; void prvSPI2Task ( void *pvParameters ) { uint8_t ReceiveBuf[11]; while(1){ HAL_SPI_Receive( &hspi2, ReceiveBuf, 11, 100); HAL_UART_Transmit( &huart2, "Received : ", 11, 10); HAL_UART_Transmit( &huart2, ReceiveBuf, 11, 10); HAL_UART_Transmit( &huart2, "\r\n", 2, 10); } } In the project I use FreeRTOS to connect two tasks. It seems to work, but for some reason it transmits only the first letter of the entire text. Please help with the project. Fee Nucleo-L152RE, the project was created in Cuba.