我使用的是寄存器到寄存器的DMA方式。65535次。


以下包含了所有与DMA有关的代码。在调试的时候确定DMA的NDTR已经写入数据，DMA2_STREAM1的CR里面TCIF1的FLAG立好了，ENABLE之后DMA传输完成NDTR为0.但是无法进入中断。请问是为什么？
我实用DMA进行SRAM与TFTLCD之间的直接调用，请问这时候地址应该怎么写？ [mw_shl_code=c,true] DMA_InitStructure.DMA_Channel = chx; DMA_InitStructure.DMA_PeripheralBaseAddr = par; DMA_InitStructure.DMA_Memory0BaseAddr = mar; DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToMemory; DMA_InitStructure.DMA_BufferSize = ndtr; DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Enable; DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable; DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord; DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; DMA_InitStructure.DMA_Priority = DMA_Priority_Medium; DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable; DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull; DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single; DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single; DMA_Init(DMA_Streamx, &DMA_InitStructure); DMA2_Stream1->CR &= 0xfffffffe; DMA2_Stream1->CR &= 0xfffbffff;//关闭双缓冲区模式 DMA_ITConfig(DMA2_Stream1,DMA_IT_TC,ENABLE);//DMA中断配置[/mw_shl_code] [mw_shl_code=c,true][/mw_shl_code] [mw_shl_code=c,true][/mw_shl_code] [mw_shl_code=c,true] [mw_shl_code=c,true]void DMA2_Stream1_IRQHandler(void) { static u8 i = 1; if(DMA_GetITStatus(DMA2_Stream1,DMA_IT_TCIF1)==SET) { if(i<4) { MYDMA_Config(DMA2_Stream1,DMA_Channel_0,Bank1_SRAM3_ADDR+131072*i,0x0000007E,65535); MYDMA_Enable(DMA2_Stream1,65535); } else if(i == 4) { MYDMA_Config(DMA2_Stream1,DMA_Channel_0,Bank1_SRAM3_ADDR+524288,0X0000007E,4292); MYDMA_Enable(DMA2_Stream1,4292); } } DMA_ClearITPendingBit(DMA2_Stream1,DMA_IT_TCIF1); }[/mw_shl_code]



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