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DMA fifo algorithm for non regular data

Question asked by Erkan Ersoy on Sep 13, 2015
Latest reply on Sep 14, 2015 by Clive One
I am trying to figure out DMA and write buffer for incoming TCP data to send over USART

I was thinking about using circular DMA (for USART TX) and  add data to buffer. When new data arrives stop DMA and add data end of buffer circularly and continue DMA but restarting DMA will lose its last transmit point.
Can anyone point me right direction using DMA this kind of operation.

Thank you