UART+DMA to transfer unequal ength data packet

[fredfu]

Hi Team,

One of my cusomter is using LPC54605, in their applications, they will use high speed UART, the baud rate will up to 2Mbps, they need to use UART+DMA to transfer data, and the length of frame are difference, do you have any suggestion for DMA to receive unequal length data packets? Thanks.

Best Regards,

Fred Fu

[bin_er]

I would adding a header + packet length for the data sent and application can concatenate the data next. I may not propose for DMA transmission for unequal length data.

The DMA descriptor and memory buffer is easy managed for fixed length transfer + backend data concatenation.