Posted on May 17, 2011 at 09:44Hello,
I am trying to do the following:
To have an interruption each time I received a byte on the UART.
To emit a buffer of data by DMA transfer.
The problem I have is that if I want an interruption each time I received a byte I have to disable the UART FIFO (because even in 1/8 fifo event, I have an interruption only every 2 bytes). And if I disable Fifo, DMA don't work...
I also tried to disable fifo when I am waiting for incomming bytes and enable it when I emit data.
But the DMA interruption occured before the FIFO is empty, so if I immediatly disable Fifo I lost the last 4 bytes and If i wait for the fifo to be empty I am wasting 1500µs.
Do you have any suggestion?
