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OMAP-L138 UPP问题咨询



您好,

请问下,upp dma buffer我设置128个字节,具体的Byte Count,Line Count设置如下:
#define UPP_DMA_BYTE_COUNT  (64) //DMA行字节数,每行64个字节,行的字节必须是64的整数倍
#define UPP_DMA_LINE_COUNT 2 //DMA行数, DMA行数 = DMA缓冲区大小/UPP_DMA_BYTE_COUNT
#define UPP_DMA_BUFFER_SIZE (UPP_DMA_BYTE_COUNT * UPP_DMA_LINE_COUNT)

发送1~128共128个字节给FPGA,FPGA端只接收到第1行1-64共64个字节,第2行就没接收到;
附:

WindowAddress:0xc2010300, LineCount:2, ByteCount:64, LineOffsetAddress:64(UPP DMA 设置的几个值)

请问:可能会是什么原因导致fpga只收到1行问题?