/**
  ******************************************************************************
  * File Name          : dma.c
  * Description        : This file provides code for the configuration
  *                      of all the requested memory to memory DMA transfers.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; 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
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "dma.h"

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/*----------------------------------------------------------------------------*/
/* Configure DMA                                                              */
/*----------------------------------------------------------------------------*/

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/** 
  * Enable DMA controller clock
  */
void MX_DMA_Init(void) 
{

  /* Init with LL driver */
  /* DMA controller clock enable */
  LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_DMA1);

  /* DMA interrupt init */
  /* DMA1_Channel4_5_6_7_IRQn interrupt configuration */
  NVIC_SetPriority(DMA1_Channel4_5_6_7_IRQn, 0);
  NVIC_EnableIRQ(DMA1_Channel4_5_6_7_IRQn);

}

/* USER CODE BEGIN 2 */
/************************************************
函数名称 �? Get_TOF_Distance
�?    �? �? 读取传感器数�?
�?    �? �? DMA_TypeDef *DMAx					DMA Instance
						uint32_t Channel					DMA Channel
						USART_TypeDef *USARTx			USART Instance
						uint32_t MemoryAddress		数据存储地址
						uint32_t NbData 					数据长度

�? �? �? �? �?
*************************************************/
void Usart_DMA_CONFIG(DMA_TypeDef *DMAx, uint32_t Channel, USART_TypeDef *USARTx, uint32_t MemoryAddress,uint32_t NbData)
{
	LL_DMA_SetPeriphAddress(DMAx,Channel,(uint32_t)(&USARTx->RDR));
	LL_USART_DMA_GetRegAddr(USARTx,LL_USART_DMA_REG_DATA_RECEIVE);
	LL_DMA_SetMemoryAddress(DMAx,Channel,(uint32_t)MemoryAddress);
	LL_DMA_SetDataLength(DMAx,Channel,NbData);
	LL_DMA_EnableChannel(DMAx,Channel);
	LL_USART_EnableDMAReq_RX(USARTx);
	LL_USART_EnableIT_IDLE(USARTx);
}
/* USER CODE END 2 */

/**
  * @}
  */

/**
  * @}
  */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/