Can you measure VBUS on the Pico (W) pin? I am quite curious about what voltage is going into the CYW43439 GPIO pin. If I am using such a board, I wouldn't be able to get myself to depend on a high logic level of 2.3V (for my case of VBUS 4.6V) when VIH(min) is spec'ed at 2.0V. I think a Schmitt trigger would be best for that kind of input signal, but the CYW43439 DS does not provide such details. Suppose it is a rise time problem, then perhaps the rise time can be improved by holding down the GPIO and then releasing it occasionally to check for VBUS.
Statistics: Posted by katak255 — Wed May 08, 2024 4:45 am