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DMA controller

Question asked by volt on Apr 24, 2013
Latest reply on May 21, 2013 by SachinV

Hello, everybody

I've got a problem with background DMA transfers and timer0 interrupts. I try to read data from external port according to timer0 interrupts and at the same time I use UART in autobuffer mode. In that case I read wrong buffer from external port, so DMA definitely has an impact on my main program.

Finally I have 3 interrupts in the program (timer0, tx, rx UART). Could someone explain to me what happens during simultaneous work DMA and other interrupts?

Thanks for help.