Hello, I had some time tonight to test out the audio expander caplet tonight. I'm just doing a in to out configuration. That is do an analog read and then an analog write. So it should (in theory) just pass the signal through / reproduce it. The good news is that input to output (when running a frame size of 2 samples) was something like 4 samples. So the latency is very good. I verified this by using an independent computer sampling the input and the output.
However, I'm wondering about some things though. Issue #1. It seems I have to multiply the input by 10 to get a line level output, even though I'm feeding a line level signal into the Bela. I'm not using the jumpers because the signal is a line level signal. This seems odd. I added in the jumper and nothing changed. Hmmm.
Issue #2. It seems theres some wild stuff going on with the signal. It starts off with the -1 at 0 and slowly swoops down to center on the 0. Also the tops of the square wave are always tilted. So I guess I don't have the right words to describe it, but it seems to not reproduce the input signal very well. I've attached a screenshot here. The middle Signal is the square fed back into the computer, and the bottom signal is the signal that goes through the bela.