01-06-2010 11:48 PM
01-07-2010 05:52 AM
You might want to post this in the PicoBlaze forum, since you'll probably
reach someone with more expertise on the subject, including Ken Chapman.
If I were doing this, I'd dump the Picoblaze design altogether and just write
the SPI logic control in VHDL as well. However if your data rate is slow enough
you could possibly work it into the Picoblaze example with a little modification
of the assembly code to take the D/A data from an input port rather than the
wave tables. It looks like the wave tables are being read into scratchpad memory
and then played out in the interrupt routine, to the interrupt service routine
would be the obvious spot to look for making the modifications.
05-15-2012 10:06 AM