nrf52832-dk - uart - p.21 reset

RE: nrf52832-dk - uart - p.21 reset

Simon — Fri, 11 Apr 2025 16:39:48 GMT

tried 18/19 on the dk52, ok, then 18/21 and then that turned ok, which this all started from the custom connector having rx/tx mislabeled,...thank-you.

RE: nrf52832-dk - uart - p.21 reset

Simonr — Fri, 11 Apr 2025 06:41:51 GMT

That should be possible. Check the nRF52832 DK, as there are some solder bridges related to the P0.21 you can try to cut. I don't see a reason P0.18 shouldn't be working though. Have you tried using P0.18 alongside any other pin than P0.21?

Best regards,

Simon

RE: nrf52832-dk - uart - p.21 reset

Simon — Thu, 10 Apr 2025 15:05:31 GMT

nope,
tried every side of the chip,
pins 3/4, 12/13, 29/30, 23/24 all good,
except 18/21.
maybe something else to try?

thank-you,

RE: nrf52832-dk - uart - p.21 reset

johnathanpalm — Thu, 10 Apr 2025 08:46:09 GMT

Hello @ fall guys,

Your pin configuration looks mostly correct. However, confirm that the pin numbers are set up properly in your overlays:

dts
group1 {
psels = <NRF_PSEL(UART_TX, 0, 21)>;
};
group2 {
psels = <NRF_PSEL(UART_RX, 0, 18)>;
bias-pull-up; // Ensure this is correct for your setup
};