What do you want to do with the D/A?
I sorted out the basics here
This talks about the reference voltage and synthesizing a wave shape from a look up table
This is my latest video with a link to the code for playing the game of Life and turning each lit pixel into a note.
Yes the documentation on the R4 boards is very poor, and it is very disappointing, and it has been left to members to work it out themselves.
That is the things that can be worked out. Basically there are things that we just can't work out, like how the boot loader actually works, and how to send MIDI messages through the USB port. But we are not getting much help about these questions from the people who actually wrote the code, let alone document it.
