Adding DMA SPI in RX mode help :)

randyao12345 · ‎2014-09-03

Posted on September 04, 2014 at 00:06

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balmukund66 · ‎2014-09-03

Posted on September 04, 2014 at 08:24

Hello,

The DMA configuration will be different for SPI receive mode.

Please configure the DMA as Below:

//DMA2 setup for SPI1 (DMA2_Channel3_Stream2)

DMA_DeInit(DMA2_Stream2);

DMA_InitStructure.DMA_Channel = DMA_Channel_3;

DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory; //Transmit

DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)SPI2_Buffer;

DMA_InitStructure.DMA_BufferSize = (uint16_t)(sizeof(SPI2_Buffer)-1);

DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&SPI1->DR;

Thanks & Regards,

Balmukund Prasad