LPC MicrocontrollersのトピックUART+DMA to transfer unequal ength data packet

UART+DMA to transfer unequal ength data packet

fredfu — Tue, 19 Jun 2018 02:39:08 GMT

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

Re: UART+DMA to transfer unequal ength data packet

bin_er — Tue, 19 Jun 2018 02:41:45 GMT

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.