UART debug output on PNEV5180B

henry_pootle — Mon, 05 May 2025 09:47:24 GMT

I am trying to enable debug logs over UART on the evaluation board I have (PNEV5180B)

Unfortunately, I didn't find any schematics for the board, so I made some assumptions. The first one is that J201 is a UART port connected to the ARM MCU. Taking into account that it has 3 pins marked as TX, RX and Ground I think it is quite plausible.

Then I've checked how the work with UART was implemented in lpcopen lpcxpresso SDK for lpc1769 and did the same. I managed to make all related IRQ triggers, and I believe smth is transferred, but I still can't manage to get any data on the pins themselves. They just keep silent (not noise, just silence). I've tried all 3 UARTs, they stay the same.

So the questions are:

- Is J201 actually an UART?

- Which UART port does it correspond to?

- Are there any functional examples of using UART communication with PNEV5180B boards?

Thank you.

Wireless MCUのトピックUART debug output on PNEV5180B

UART debug output on PNEV5180B