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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2010-12-23 onelife Initial creation for EFM32
*/
/***************************************************************************//**
* @addtogroup efm32
* @{
******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "board.h"
#include "drv_dma.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/** DMA control block, requires proper alignment. */
#if defined (__ICCARM__)
#pragma data_alignment=256
DMA_DESCRIPTOR_TypeDef dmaControlBlock[DMA_CHAN_COUNT * 2];
#elif defined (__CC_ARM)
DMA_DESCRIPTOR_TypeDef dmaControlBlock[DMA_CHAN_COUNT * 2] __attribute__ ((aligned(256)));
#elif defined (__GNUC__)
DMA_DESCRIPTOR_TypeDef dmaControlBlock[DMA_CHAN_COUNT * 2] __attribute__ ((aligned(256)));
#else
#error Undefined toolkit, need to define alignment
#endif
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/***************************************************************************//**
* @brief
* Initialize DMA hardware
*
* @details
*
* @note
******************************************************************************/
void rt_hw_dma_init(void)
{
DMA_Init_TypeDef dmaInit;
/* Reset */
DMA_Reset();
dmaInit.hprot = 0;
dmaInit.controlBlock = (DMA_DESCRIPTOR_TypeDef *)&dmaControlBlock;
DMA_Init(&dmaInit);
NVIC_SetPriority(DMA_IRQn, EFM32_IRQ_PRI_DEFAULT);
}
/***************************************************************************//**
* @}
******************************************************************************/
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