DSPRelated.com
Forums

edma errors with mcbsp used as uart

Started by fr_leroux2 October 11, 2005
Hi all,

I am trying to run the code from spra633 to implement a uart using the
first method (mcbsp in serial port configuration) on a dsk6713. The
function ProcessTransmitData() seems to work fine and to fill "xmitbuf"
correctly, the transmit and receive edma events do occur but the data I
get in "recvbuf" is all wrong and changes every time I try to send the
same string. The values in "recvbuf" are also random (not 0x0000 or
0xFFFF). I shorted the pins DX, DR, and FSR like specified in the
document.

How can I troubleshoot this problem?

Regards,

Frank