UART+DMA to transfer unequal ength data packet

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UART+DMA to transfer unequal ength data packet

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fredfu
NXP Employee
NXP Employee

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

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bin_er
NXP Employee
NXP Employee

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.

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