其中的DMA2设定如下: dmaHandle.Init.Channel = SDRAM_DMAx_CHANNEL; dmaHandle.Init.Direction = DMA_MEMORY_TO_MEMORY; dmaHandle.Init.PeriphInc = DMA_PINC_ENABLE; dmaHandle.Init.MemInc = DMA_MINC_ENABLE; dmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD; dmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_WORD; dmaHandle.Init.Mode = DMA_NORMAL; dmaHandle.Init.Priority = DMA_PRIORITY_HIGH; dmaHandle.Init.FIFOMode = DMA_FIFOMODE_DISABLE; dmaHandle.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; dmaHandle.Init.MemBurst = DMA_MBURST_SINGLE; dmaHandle.Init.PeriphBurst = DMA_PBURST_SINGLE; BSP_SDRAM_WriteData_DMA(SDRAM_DEVICE_ADDR, (uint32_t*)test_rom, 10); 无问题 BSP_SDRAM_ReadData_DMA(SDRAM_DEVICE_ADDR, (uint32_t*)test_rom, 10); 传输错误 |
已搞掂是初始化时序的问题 |
高大上啊 |
高大上啊 |
没做过。。。。顶一个 |