hello,
i use am3359 and sys/bios.
i use mcasp to transmiter non audio data , i use edma to sevice the mcasp.
i configure mcasp in burst mode with fifo enable.
the edma was set up to send 256bytes ,after that the param was link to a dummy param.
my problem is that i can only send the first 256bytes, next time when i want to send another 256 bytes,it fails.
i sees that the the next time the afifo in mcasp did not send dma request to edma, so it fails.
i also make a test , when i configure the edma to link to another param after the first 256 bytes, keep the mcasp afifo not empty, the mcasp works fine.
should i always makes the mcasp afifo not empty??