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After further investigation, I've confirmed that "nrfjprog --reset" is doing the same reset as J-Flash. I'm looking for the device to go into low power mode after programming (~2uA at 3v). It does after J-Flash (F9) but not after my programmatic reset. The difference seems to be that my application has the J-Link DLL open (pylink.readthedocs.io/en/lates…l#pylink.jlink.JLink.open) while performing the reset. The reset occurs, but the J-Link DLL then forces the device back to a higher power state …
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I've written a custom manufacturing programming tool for ARM Cortex-M4 nRF52832 and nRF52810 devices. It uses a J-Link Plus USB programmer (J-Link V7.98g) and is implemented in Python using the Pylink package. The program configures J-Link to use SWD and connects to the target with chip_name 'nRF52832_xxAA' or 'nRF52810_xxAA', allowing the FICR device id and UICR information to be read. I have a problem resetting the processor programmatically from Python. The Pylink reset() function does someth…