73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
/*
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File Name : yc_dma.c
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Author : Yichip
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Version : V1.0
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Date : 2018/03/27
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Description : DMA Mem_TO_Mem Mode encapsulation.
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If enable DMA interrupt ,enter interrupt after sending data by default,and just one DMA IT Mode.
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*/
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#include "yc_dma.h"
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#define DMA_Channel DMACH_MEMCP
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#define DMA_CLEAR_IT_BIT_Pos 6
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#define DMA_ENTERIT_BIT_Pos 1
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#define DMA_DATA_COMPLETE_BIT_Pos 0
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void DMA_Init(DMA_InitTypeDef *DMA_InitStruct)
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{
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DMA_SRC_ADDR(DMACH_MEMCP) = DMA_InitStruct->DMA_MemorySourceAddr;
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DMA_DEST_ADDR(DMACH_MEMCP) = DMA_InitStruct->DMA_MemoryDestAddr;
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DMA_LEN(DMACH_MEMCP) = (DMA_InitStruct->DMA_BlockSize << 16) | DMA_InitStruct->DMA_BlockSize;
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}
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void DMA_ChannelCmd(FunctionalState NewState)
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{
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if (NewState != DISABLE)
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{
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DMA_START(DMACH_MEMCP) |= (DMA_ENABLE);
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}
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else
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{
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DMA_START(DMACH_MEMCP) &= ~(DMA_ENABLE);
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}
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}
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void DMA_SetSRCAddress(uint32_t Address)
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{
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DMA_SRC_ADDR(DMACH_MEMCP) = Address;
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}
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void DMA_SetDSRAddress(uint32_t Address)
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{
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DMA_DEST_ADDR(DMACH_MEMCP) = Address;
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}
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FunctionalState DMA_IsChannelEnabled(void)
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{
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if (1 == (DMA_START(DMACH_MEMCP) & DMA_ENABLE))
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{
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return ENABLE;
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}
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else
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{
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return DISABLE;
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}
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}
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FlagStatus DMA_GetFlagStatus(void)
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{
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return (FlagStatus)((DMA_STATUS(DMACH_MEMCP) & (1 << DMA_DATA_COMPLETE_BIT_Pos)));
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}
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void DMA_ClearITPendingBit(void)
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{
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DMA_START(DMACH_MEMCP) |= (1 << DMA_CLEAR_IT_BIT_Pos);
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}
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void DMA_ITConfig(FunctionalState NewState)
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{
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DMA_CONFIG(DMACH_MEMCP) &= ~(1 << DMA_ENTERIT_BIT_Pos);
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DMA_CONFIG(DMACH_MEMCP) |= (NewState << DMA_ENTERIT_BIT_Pos);
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}
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