97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
/*
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* Copyright 2021 MindMotion Microelectronics Co., Ltd.
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include "hal_dma.h"
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/* clear all the interrupt enables and disable the dma channel. */
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uint32_t DMA_InitChannel(DMA_Type * DMAx, uint32_t channel, DMA_Channel_Init_Type * init)
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{
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uint32_t ccr = 0u;
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if ( (init->XferMode == DMA_XferMode_MemoryToPeriph)
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|| (init->XferMode == DMA_XferMode_MemoryToPeriphBurst) )
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{
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ccr |= DMA_CCR_DIR_MASK;
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}
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if ( (init->XferMode == DMA_XferMode_PeriphToMemoryBurst)
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|| (init->XferMode == DMA_XferMode_MemoryToPeriphBurst) )
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{
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ccr |= DMA_CCR_MEM2MEM_MASK;
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}
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if (init->ReloadMode == DMA_ReloadMode_AutoReload)
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{
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ccr |= DMA_CCR_ARE_MASK;
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}
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else if (init->ReloadMode == DMA_ReloadMode_AutoReloadContinuous)
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{
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ccr |= (DMA_CCR_ARE_MASK | DMA_CCR_CIRC_MASK);
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}
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ccr |= DMA_CCR_PINC(init->PeriphAddrIncMode)
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| DMA_CCR_MINC(init->MemAddrIncMode)
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| DMA_CCR_PSIZE(init->XferWidth)
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| DMA_CCR_MSIZE(init->XferWidth)
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| DMA_CCR_PL(init->Priority)
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;
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DMAx->CH[channel].CCR = ccr;
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DMAx->CH[channel].CNDTR = init->XferCount;
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DMAx->CH[channel].CPAR = init->PeriphAddr;
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DMAx->CH[channel].CMAR = init->MemAddr;
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return 0u;
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}
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void DMA_EnableChannelInterrupts(DMA_Type * DMAx, uint32_t channel, uint32_t interrupts, bool enable)
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{
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if (enable)
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{
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DMAx->CH[channel].CCR |= (interrupts & 0xEu);
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}
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else
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{
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DMAx->CH[channel].CCR &= ~(interrupts & 0xEu);
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}
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}
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uint32_t DMA_GetChannelInterruptStatus(DMA_Type * DMAx, uint32_t channel)
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{
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return (DMAx->ISR >> (channel * 4u)) & 0xFu;
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}
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void DMA_ClearChannelInterruptStatus(DMA_Type * DMAx, uint32_t channel, uint32_t interrupts)
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{
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DMAx->IFCR = ( (interrupts & 0xFu) << (channel * 4u) );
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}
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void DMA_EnableChannel(DMA_Type * DMAx, uint32_t channel, bool enable)
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{
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if (enable)
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{
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DMAx->CH[channel].CCR |= DMA_CCR_EN_MASK;
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}
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else
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{
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DMAx->CH[channel].CCR &= ~DMA_CCR_EN_MASK;
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}
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}
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void DMA_EnableBurstMode(DMA_Type * DMAx, uint32_t channel, bool enable)
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{
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if (enable)
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{
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DMAx->CH[channel].CCR |= DMA_CCR_BURSTEN_MASK;
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}
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else
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{
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DMAx->CH[channel].CCR &= ~DMA_CCR_BURSTEN_MASK;
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}
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}
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/* EOF. */
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