NRF52840 does not restart after a reset

RE: NRF52840 does not restart after a reset

Susheel Nuguru — Mon, 23 Jan 2023 14:05:04 GMT

You are welcome and thanks for writing the reason for the issue you are seeing. It makes this thread complete and useful to others. Please mark this thread as verified if you consider this issue resolved.

RE: NRF52840 does not restart after a reset

bgarrood — Mon, 23 Jan 2023 13:43:36 GMT

Thank you. I'm using SDK 17.0.2

I found out the issue was due to a board layout problem, but actually your suggestions about pull-ups may enable me to work around. So thank you!

RE: NRF52840 does not restart after a reset

Susheel Nuguru — Mon, 23 Jan 2023 13:39:51 GMT

Hi Barnaby,

Not sure which SDK version you are using but you need to explicitly set the pin number to which you need your reset behavior in this UICR register. Also make sure that you set the default pull configuration using the gpio config to set the pin pull correct at system start.