Hello everyone!
I have a question about flashing firmware to a PCBA with the nRF54 and nRF91, or any dual MCU board in general.
When looking at the Thingy91(x) this has a physical switch to mux the output of the SWD to either of the chips.
This method works fine when developing and testing, but how should this be approached during production?
Should there be 2 SWD connectors?
Have the first chip be connected to the mux, and when it is flashed and powers on it pulls up/down so the other chip is selected?
What is the best approach for this?
Kind regards,
Jack