I am having some issues with UART 1 on my WP7700 with the Mangoh Red.
Trace 1 is pin 10 of the rpi header.
Trace 3 is pin 12 of the Iot header. (connected directly to WP)
I am trying to use the UART to talk to an external micro, sometimes it works, but a lot of the time I see this mess.
I have a bunch of Mangohs here, it is happening on all of them so far.
Has anyone come across this before?
If looks like the gpio for the rx pin (labelled as tx?) (gpio5) is being driven, and the FXMA108 is unable to distinguish the input from the output anymore, and attempts to drive the TX line from the other micro.
Firmware Version: SWI9X06Y_02.13.02.00 7cfe8a jenkins 2017/12/22 05:21:50