Multiple custom board programming

[Giovanni De Rosa]

Hi, I have a custom board with an ISP1807 onboard.
We'd like to optimize the production process, especially the programming process. We currently use the nrf52840 dk board and program it via JTAG with the nRF Connect for Desktop software.
Can I multiply the development board's outputs and use the same software to program more of them?
Or are there external tools?
Thanks for your support
Giovanni

[Kenneth]

Hello,

We don't have any support for gang programmer, so I guess you need to reach out to Elnec, Hi-Lo Systems or SEGGER for this question.

We do have command line tools (e.g. nrfjprog or nrfutil), but they only work with SEGGER j-link, and require one programmer for each call. So for mass production you may reach out to the above.

Kenneth

[Giovanni De Rosa]

Thanks for the reply, so if I split the JTAG output into 2 channels, connecting two custom boards with the nrf connect for desktop program I wouldn't be able to program either board. Correct?

[Kenneth]

Correct, that wouldn't work.

Kenneth

[Giovanni De Rosa]

Can I use nrfutil to write to a memory address from a prompt?

[Kenneth]

Yes, try to type "nrfutil device write --help"

For instance you may need to use the --address --value --direct

Kenneth