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Diffstat (limited to 'Projects/NUCLEO-WB35CE/Examples/DMA/DMA_MUX_RequestGen/Src/main.c')
-rw-r--r-- | Projects/NUCLEO-WB35CE/Examples/DMA/DMA_MUX_RequestGen/Src/main.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/Projects/NUCLEO-WB35CE/Examples/DMA/DMA_MUX_RequestGen/Src/main.c b/Projects/NUCLEO-WB35CE/Examples/DMA/DMA_MUX_RequestGen/Src/main.c new file mode 100644 index 000000000..7fb85b90c --- /dev/null +++ b/Projects/NUCLEO-WB35CE/Examples/DMA/DMA_MUX_RequestGen/Src/main.c @@ -0,0 +1,262 @@ +/* USER CODE BEGIN Header */ +/** + ****************************************************************************** + * @file DMA/DMAMUX_RequestGen/Src/main.c + * @author MCD Application Team + * @brief This example shows how to use the DMA with the DMAMUX to + * request generator using the STM32WBxx HAL API. + ****************************************************************************** + * @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 */ +/* USER CODE END PD */ + +/* Private macro -------------------------------------------------------------*/ +/* USER CODE BEGIN PM */ +/* USER CODE END PM */ + +/* Private variables ---------------------------------------------------------*/ + +/* USER CODE BEGIN PV */ +__IO uint32_t DMA_TransferErrorFlag = 0; + +uint32_t SRC_Buffer_LED2_Toggle[2] = + { 0, /*Value for LED2 ON */ + LED2_PIN /*Value for LED2 OFF */ + }; + +DMA_HandleTypeDef DMA_Handle; +/* USER CODE END PV */ + +/* Private function prototypes -----------------------------------------------*/ +void SystemClock_Config(void); +/* USER CODE BEGIN PFP */ +static void HAL_TransferError(DMA_HandleTypeDef *hdma); +/* 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 */ + HAL_DMA_MuxRequestGeneratorConfigTypeDef dmamux_ReqGenParams; + + /* 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 */ + /* USER CODE BEGIN 2 */ + /* -1- Initialize LEDs mounted on NUCLEO-WB35CE board */ + BSP_LED_Init(LED2); + BSP_LED_Init(LED3); + + /*##-2- Configure the DMA ##################################################*/ + /* Enable DMA1 clock */ + DMAx_CLK_ENABLE(); + + /* Configure the DMA handler for Transmission process */ + /* DMA mode is set to circular for an infinite DMA transfer */ + DMA_Handle.Instance = DMA1_Channel1; + + DMA_Handle.Init.Request = DMA_REQUEST_GENERATOR0; + DMA_Handle.Init.Direction = DMA_MEMORY_TO_PERIPH; + DMA_Handle.Init.PeriphInc = DMA_PINC_DISABLE; + DMA_Handle.Init.MemInc = DMA_MINC_ENABLE; + DMA_Handle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD; + DMA_Handle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD; + DMA_Handle.Init.Mode = DMA_CIRCULAR; + DMA_Handle.Init.Priority = DMA_PRIORITY_LOW; + + /* Initialize the DMA with for Transmission process */ + HAL_DMA_Init(&DMA_Handle); + + /* Register Error Callback */ + HAL_DMA_RegisterCallback(&DMA_Handle, HAL_DMA_XFER_ERROR_CB_ID, &HAL_TransferError); + + /* NVIC configuration for DMA transfer complete interrupt*/ + HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 1); + HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn); + + /*##-3- Configure and enable the DMAMUX Request generator ####################*/ + dmamux_ReqGenParams.SignalID = HAL_DMAMUX1_REQ_GEN_EXTI0; /* External request signal is EXTI0 signal */ + dmamux_ReqGenParams.Polarity = HAL_DMAMUX_REQ_GEN_RISING; /* External request signal edge is Rising */ + dmamux_ReqGenParams.RequestNumber = 1; /* 1 requests on each edge of the external request signal */ + + HAL_DMAEx_ConfigMuxRequestGenerator(&DMA_Handle, &dmamux_ReqGenParams); + + /* NVIC configuration for DMAMUX request generator overrun errors*/ + HAL_NVIC_SetPriority(DMAMUX1_OVR_IRQn, 0, 1); + HAL_NVIC_EnableIRQ(DMAMUX1_OVR_IRQn); + HAL_DMAEx_EnableMuxRequestGenerator (&DMA_Handle); + + /*##-4- Configure and enable the User push-button (SW1) in EXTI mode used as DMA external request signal #####*/ + BSP_PB_Init(BUTTON_SW1, BUTTON_MODE_EXTI); + + /*##-5- Start the DMA transfer ################################################*/ + /* DMA source buffer is SRC_BUFFER_LED2_TOGGLE containing values to be written + to LED2 GPIO ODR register in order to turn LED2 On/Off each time comes a request from the DMAMUX request generator */ + HAL_DMA_Start_IT(&DMA_Handle, (uint32_t)SRC_Buffer_LED2_Toggle, (uint32_t)&LED2_GPIO_PORT->ODR, 2); + + /* USER CODE END 2 */ + + /* Infinite loop */ + /* USER CODE BEGIN WHILE */ +while (1) + { + /* USER CODE END WHILE */ + + /* USER CODE BEGIN 3 */ + if(DMA_TransferErrorFlag != 0) + { + Error_Handler(); + } + + + } + + /* 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 */ +} + +/* USER CODE BEGIN 4 */ + +/** + * @brief This function is executed in case of DMA error occurrence. + * @param None + * @retval None + */ +static void HAL_TransferError(DMA_HandleTypeDef *hdma) +{ + DMA_TransferErrorFlag = 1; +} + +/* 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 */ + /* 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 */ + /* Infinite loop */ + while (1) + { + } + /* USER CODE END 6 */ +} +#endif /* USE_FULL_ASSERT */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |