TIM_DMA
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Outline
Includes
#include "main.h"
HAL_TIM_PWM_MspInit(TIM_HandleTypeDef *)
Files
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SourceVuSTM32 Libraries and SamplesTIM_DMASrc/stm32f4xx_hal_msp.c
 
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/** ****************************************************************************** * @file TIM/TIM_DMA/Src/stm32f4xx_hal_msp.c * @author MCD Application Team * @brief HAL MSP module. ****************************************************************************** * @attention * * Copyright (c) 2017 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** *//* ... */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /** @addtogroup STM32F4xx_HAL_Examples * @{ *//* ... */ /** @defgroup HAL_MSP * @brief HAL MSP module. * @{ *//* ... */ Includes /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private function prototypes -----------------------------------------------*/ /* Private functions ---------------------------------------------------------*/ /** @defgroup HAL_MSP_Private_Functions * @{ *//* ... */ /** * @brief TIM MSP Initialization * This function configures the hardware resources used in this example: * - Peripheral's clock enable * - Peripheral's GPIO Configuration * - DMA configuration for transmission request by peripheral * @param htim: TIM handle pointer * @retval None *//* ... */ void HAL_TIM_PWM_MspInit(TIM_HandleTypeDef *htim) { GPIO_InitTypeDef GPIO_InitStruct; static DMA_HandleTypeDef hdma_tim; /*##-1- Enable peripherals and GPIO Clocks #################################*/ /* TIMx clock enable */ TIMx_CLK_ENABLE(); /* Enable GPIO Channel3/3N Clocks */ TIMx_CHANNEL3_GPIO_CLK_ENABLE(); /* Enable DMA clock */ DMAx_CLK_ENABLE(); /* Configure TIM3_Channel3 in output, push-pull & alternate function mode */ GPIO_InitStruct.Pin = GPIO_PIN_CHANNEL3; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF_TIMx; HAL_GPIO_Init(TIMx_GPIO_CHANNEL3_PORT, &GPIO_InitStruct); /* Set the parameters to be configured */ hdma_tim.Init.Channel = DMA_CHANNEL_5; hdma_tim.Init.Direction = DMA_MEMORY_TO_PERIPH; hdma_tim.Init.PeriphInc = DMA_PINC_DISABLE; hdma_tim.Init.MemInc = DMA_MINC_ENABLE; hdma_tim.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD ; hdma_tim.Init.MemDataAlignment = DMA_MDATAALIGN_WORD ; hdma_tim.Init.Mode = DMA_CIRCULAR; hdma_tim.Init.Priority = DMA_PRIORITY_HIGH; hdma_tim.Init.FIFOMode = DMA_FIFOMODE_DISABLE; hdma_tim.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; hdma_tim.Init.MemBurst = DMA_MBURST_SINGLE; hdma_tim.Init.PeriphBurst = DMA_PBURST_SINGLE; /* Set hdma_tim instance */ hdma_tim.Instance = TIMx_CC3_DMA_INST; /* Link hdma_tim to hdma[TIM_DMA_ID_CC3] (channel3) */ __HAL_LINKDMA(htim, hdma[TIM_DMA_ID_CC3], hdma_tim); /* Initialize TIMx DMA handle */ HAL_DMA_Init(htim->hdma[TIM_DMA_ID_CC3]); /*##-2- Configure the NVIC for DMA #########################################*/ /* NVIC configuration for DMA transfer complete interrupt */ HAL_NVIC_SetPriority(TIMx_DMA_IRQn, 0, 0); HAL_NVIC_EnableIRQ(TIMx_DMA_IRQn); }{ ... } /** * @} *//* ... */ /** * @} *//* ... */ /** * @} *//* ... */
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