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KL25 using UART2 and DMA

Question asked by Neil Hancock on Jan 23, 2014
Latest reply on Jan 28, 2014 by Neil Hancock


I'm using UART2/baud=115K+ with a DMA channel(2&3) as interrupts can be turned off for some period of time ~1mS.

I'm expecting an async packet in over UART2, variable size say 60-512bytes,

Is there a way of creating a packet timeout - no characters have arrived on UART2 for 50char timings.?

KL25P80M48SF0RM describes 4 standard DMAs and looking to see if I can possibly connect a timer in parallel and generate an INT when no char received,

Are there any AppNotes for connecting KL25  UART to DMA?