RE: NRF52810 Cannot change pins on DTM example

epice500 — Sat, 24 Dec 2022 04:11:21 GMT

Hey Einar!

[quote userid="7377" url="~/f/nordic-q-a/94966/nrf52810-cannot-change-pins-on-dtm-example/401299"]If you have been able to modify the right defines, there is another possible pitfall: The pin numbers used are the GPIO pin numbers (so P0.20 would be 20, even though that is pin 23 in the QFN48, for instance). See Pin assignments for details on this.[/quote]

Turns out this was what was wrong... I put the pins in as they are labeled as gpio pins and the DTM software fired right up.

Thanks so much for the help! Enjoy the holidays!

RE: NRF52810 Cannot change pins on DTM example

Einar Thorsrud — Mon, 19 Dec 2022 14:08:41 GMT

Hi,

Are you using the nRF5 SDK or the nRF Connect SDK? As you mention the file pca100040.h I will assume the nRF5 SDK for now (specifically 17.1.0, though this should be valid for any recent version).

If you have built for the PCA10040 (nRF52 DK), then pca10040.h is the right file to modify to change RX_PIN_NUMBER and TX_PIN_NUMBER, which are used in uart_init() in examples/dtm/direct_test_mode/main.c. If you are building for another board, you should use the board file for that. Alternatively, you could replace the defines in uart_init() with the specific pins (if you want P0.20 for Rx, write 20 instead of RX_PIN_NUMBER).

If you have been able to modify the right defines, there is another possible pitfall: The pin numbers used are the GPIO pin numbers (so P0.20 would be 20, even though that is pin 23 in the QFN48, for instance). See Pin assignments for details on this.