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Diffstat (limited to 'Projects/NUCLEO-WB35CE/Examples/SPI/SPI_FullDuplex_ComDMA_Slave/Src/main.c')
| -rw-r--r-- | Projects/NUCLEO-WB35CE/Examples/SPI/SPI_FullDuplex_ComDMA_Slave/Src/main.c | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/Projects/NUCLEO-WB35CE/Examples/SPI/SPI_FullDuplex_ComDMA_Slave/Src/main.c b/Projects/NUCLEO-WB35CE/Examples/SPI/SPI_FullDuplex_ComDMA_Slave/Src/main.c new file mode 100644 index 000000000..e04d7f6de --- /dev/null +++ b/Projects/NUCLEO-WB35CE/Examples/SPI/SPI_FullDuplex_ComDMA_Slave/Src/main.c @@ -0,0 +1,386 @@ +/* USER CODE BEGIN Header */ +/** + ****************************************************************************** + * @file SPI/SPI_FullDuplex_ComDMA_Slave/Src/main.c + * @author MCD Application Team + * @brief This sample code shows how to use STM32WBxx SPI HAL API to transmit + * and receive a data buffer with a communication process based on + * DMA transfer. + * The communication is done using 2 Boards. + ****************************************************************************** + * @attention + * + * <h2><center>© Copyright (c) 2019 STMicroelectronics. + * All rights reserved.</center></h2> + * + * This software component is licensed by ST under BSD 3-Clause license, + * the "License"; You may not use this file except in compliance with the + * License. You may obtain a copy of the License at: + * opensource.org/licenses/BSD-3-Clause + * + ****************************************************************************** + */ +/* USER CODE END Header */ + +/* Includes ------------------------------------------------------------------*/ +#include "main.h" + +/* Private includes ----------------------------------------------------------*/ +/* USER CODE BEGIN Includes */ +/* USER CODE END Includes */ + +/* Private typedef -----------------------------------------------------------*/ +/* USER CODE BEGIN PTD */ + +/* USER CODE END PTD */ + +/* Private define ------------------------------------------------------------*/ +/* USER CODE BEGIN PD */ +enum +{ + TRANSFER_WAIT, + TRANSFER_COMPLETE, + TRANSFER_ERROR +}; +/* USER CODE END PD */ + +/* Private macro -------------------------------------------------------------*/ +/* USER CODE BEGIN PM */ + +/* USER CODE END PM */ + +/* Private variables ---------------------------------------------------------*/ +SPI_HandleTypeDef hspi1; +DMA_HandleTypeDef hdma_spi1_tx; +DMA_HandleTypeDef hdma_spi1_rx; + +/* USER CODE BEGIN PV */ +/* Buffer used for transmission */ +uint8_t aTxBuffer[] = "****SPI - Two Boards communication based on DMA **** SPI Message ******** SPI Message ******** SPI Message ****"; + +/* Buffer used for reception */ +uint8_t aRxBuffer[BUFFERSIZE]; + +/* transfer state */ +__IO uint32_t wTransferState = TRANSFER_WAIT; + +/* USER CODE END PV */ + +/* Private function prototypes -----------------------------------------------*/ +void SystemClock_Config(void); +static void MX_GPIO_Init(void); +static void MX_DMA_Init(void); +static void MX_SPI1_Init(void); +/* USER CODE BEGIN PFP */ +static uint16_t Buffercmp(uint8_t *pBuffer1, uint8_t *pBuffer2, uint16_t BufferLength); +/* USER CODE END PFP */ + +/* Private user code ---------------------------------------------------------*/ +/* USER CODE BEGIN 0 */ +/* USER CODE END 0 */ + +/** + * @brief The application entry point. + * @retval int + */ +int main(void) +{ + /* USER CODE BEGIN 1 */ + + /* STM32WBxx HAL library initialization: + - Configure the Flash prefetch + - Systick timer is configured by default as source of time base, but user + can eventually implement his proper time base source (a general purpose + timer for example or other time source), keeping in mind that Time base + duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and + handled in milliseconds basis. + - Set NVIC Group Priority to 4 + - Low Level Initialization + */ + /* 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_DMA_Init(); + MX_SPI1_Init(); + /* USER CODE BEGIN 2 */ + + /* Configure LED1, LED2 and LED3 */ + BSP_LED_Init(LED1); + BSP_LED_Init(LED2); + BSP_LED_Init(LED3); + + /*##-1- Start the Full Duplex Communication process ########################*/ + /* While the SPI in TransmitReceive process, user can transmit data through + "aTxBuffer" buffer & receive data through "aRxBuffer" */ + if (HAL_SPI_TransmitReceive_DMA(&hspi1, (uint8_t *)aTxBuffer, (uint8_t *)aRxBuffer, BUFFERSIZE) != HAL_OK) + { + /* Transfer error in transmission process */ + Error_Handler(); + } + + /*##-2- Wait for the end of the transfer ###################################*/ + /* Before starting a new communication transfer, you must wait the callback call + to get the transfer complete confirmation or an error detection. + For simplicity reasons, this example is just waiting till the end of the + transfer, but application may perform other tasks while transfer operation + is ongoing. */ + while (wTransferState == TRANSFER_WAIT) + { + } + + switch (wTransferState) + { + case TRANSFER_COMPLETE : + /*##-3- Compare the sent and received buffers ##############################*/ + if (Buffercmp((uint8_t *)aTxBuffer, (uint8_t *)aRxBuffer, BUFFERSIZE)) + { + /* Processing Error */ + Error_Handler(); + } + break; + default : + Error_Handler(); + break; + } + + /* USER CODE END 2 */ + + /* Infinite loop */ + /* USER CODE BEGIN WHILE */ + while (1) + { + /* USER CODE END WHILE */ + + /* USER CODE BEGIN 3 */ + + } + /* USER CODE END 3 */ +} + +/** + * @brief System Clock Configuration + * @retval None + */ +void SystemClock_Config(void) +{ + RCC_OscInitTypeDef RCC_OscInitStruct = {0}; + RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; + + /** Initializes the CPU, AHB and APB busses clocks + */ + RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI; + RCC_OscInitStruct.MSIState = RCC_MSI_ON; + RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT; + RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6; + RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; + RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI; + RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1; + RCC_OscInitStruct.PLL.PLLN = 32; + RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; + RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2; + RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2; + if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) + { + Error_Handler(); + } + /** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers + */ + RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK4|RCC_CLOCKTYPE_HCLK2 + |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; + RCC_ClkInitStruct.AHBCLK2Divider = RCC_SYSCLK_DIV2; + RCC_ClkInitStruct.AHBCLK4Divider = RCC_SYSCLK_DIV1; + + if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) + { + Error_Handler(); + } + /** Initializes the peripherals clocks + */ + /* USER CODE BEGIN Smps */ + + /* USER CODE END Smps */ +} + +/** + * @brief SPI1 Initialization Function + * @param None + * @retval None + */ +static void MX_SPI1_Init(void) +{ + + /* USER CODE BEGIN SPI1_Init 0 */ + + /* USER CODE END SPI1_Init 0 */ + + /* USER CODE BEGIN SPI1_Init 1 */ + + /* USER CODE END SPI1_Init 1 */ + /* SPI1 parameter configuration*/ + hspi1.Instance = SPI1; + hspi1.Init.Mode = SPI_MODE_SLAVE; + 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_SOFT; + hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB; + hspi1.Init.TIMode = SPI_TIMODE_DISABLE; + hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE; + hspi1.Init.CRCPolynomial = 7; + hspi1.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE; + hspi1.Init.NSSPMode = SPI_NSS_PULSE_DISABLE; + if (HAL_SPI_Init(&hspi1) != HAL_OK) + { + Error_Handler(); + } + /* USER CODE BEGIN SPI1_Init 2 */ + + /* USER CODE END SPI1_Init 2 */ + +} + +/** + * Enable DMA controller clock + */ +static void MX_DMA_Init(void) +{ + + /* DMA controller clock enable */ + __HAL_RCC_DMAMUX1_CLK_ENABLE(); + __HAL_RCC_DMA1_CLK_ENABLE(); + + /* DMA interrupt init */ + /* DMA1_Channel2_IRQn interrupt configuration */ + HAL_NVIC_SetPriority(DMA1_Channel2_IRQn, 0, 0); + HAL_NVIC_EnableIRQ(DMA1_Channel2_IRQn); + /* DMA1_Channel3_IRQn interrupt configuration */ + HAL_NVIC_SetPriority(DMA1_Channel3_IRQn, 0, 0); + HAL_NVIC_EnableIRQ(DMA1_Channel3_IRQn); + +} + +/** + * @brief GPIO Initialization Function + * @param None + * @retval None + */ +static void MX_GPIO_Init(void) +{ + + /* GPIO Ports Clock Enable */ + __HAL_RCC_GPIOA_CLK_ENABLE(); + +} + +/* USER CODE BEGIN 4 */ +/** + * @brief TxRx Transfer completed callback. + * @param hspi: SPI handle + * @note This example shows a simple way to report end of DMA TxRx transfer, and + * you can add your own implementation. + * @retval None + */ +void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi) +{ + /* Turn LED1 on: Transfer in transmission process is complete */ + BSP_LED_On(LED1); + /* Turn LED2 on: Transfer in reception process is complete */ + BSP_LED_On(LED2); + wTransferState = TRANSFER_COMPLETE; +} + +/** + * @brief SPI error callbacks. + * @param hspi: SPI handle + * @note This example shows a simple way to report transfer error, and you can + * add your own implementation. + * @retval None + */ +void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi) +{ + wTransferState = TRANSFER_ERROR; +} + +/** + * @brief Compares two buffers. + * @param pBuffer1, pBuffer2: buffers to be compared. + * @param BufferLength: buffer's length + * @retval 0 : pBuffer1 identical to pBuffer2 + * >0 : pBuffer1 differs from pBuffer2 + */ +static uint16_t Buffercmp(uint8_t *pBuffer1, uint8_t *pBuffer2, uint16_t BufferLength) +{ + while (BufferLength--) + { + if ((*pBuffer1) != *pBuffer2) + { + return BufferLength; + } + pBuffer1++; + pBuffer2++; + } + + return 0; +} + +/* USER CODE END 4 */ + +/** + * @brief This function is executed in case of error occurrence. + * @retval None + */ +void Error_Handler(void) +{ + /* USER CODE BEGIN Error_Handler_Debug */ + /* User can add his own implementation to report the HAL error return state */ + BSP_LED_Off(LED1); + BSP_LED_Off(LED2); + /* Turn LED3 on */ + BSP_LED_On(LED3); + 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 /* USE_FULL_ASSERT */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |