Hey,
We've been using the pynrfjprog HighLevel API for our production programming, and I see that's now deprecated. There aren't any examples showing how to program the modem firmware using the low-level API - but I managed to figure it out. Here's some sample code from our programming tool
from pathlib import Pathfrom pynrfjprog import LowLevelmfw = Path('mfw_nrf91x1_2.0.1.zip')afw = Path('zephyr.hex')with LowLevel.API('NRF91') as api: api.connect_to_emu_without_snr() # Recover first, as that lets us program api.recover() api.erase_all() # Program the modem firmware api.select_coprocessor(LowLevel.CoProcessor.CP_MODEM) api.program_file(mfw) api.verify_file(mfw) # Program the application api.select_coprocessor(LowLevel.CoProcessor.CP_APPLICATION) api.erase_file(afw) api.program_file(afw) api.verify_file(afw) # Reset the device api.sys_reset() api.close()print('Done')Our tool has wrapped all of this with CLI, looping for multiple devices, auto-selection between 9160 and 9151 firmware images etc - but the above should be enough for anyone else trying to get started.
The one issue I have, however, is that sys_reset() call doesn't seem to work. I've also tried hard_reset() (which isn't available) and soft_reset() - but none seem to actually reset and start the application. Is there some additional steps I need to make that work?
Our firmware image lights up an LED on our board when it boots - so that's a nice check to know the modem and application firmware have loaded. My HighLevel-based tool used a SYSTEM_RESET and that worked well on the 9160.
Kind regards,
Dan
