(I've seen several other posts mentioning similar issues, but many of them haven't resolved or found a solution that seems to apply in my case.)
I have a custom board that uses the nRF52832. I'm trying to flash a software image to it, but get errors when using nrfjprog in the terminal, and a reboot of the devboard when I try to select the device in nRF Go Studio (taking me back to the main screen, where I can try to select it under 'NRF52 development boards' again, which inevitably yields the same result).
The terminal output when running nrfjrpog is:
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nrfjprog --family nRF52 --log --program ./examples/peripheral/blinky/hex/blinky_pca10040_s132.hex
nrfjprog verion 9.7.2
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FUNCTION: open_dll.
FUNCTION: open_dll.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: connect_to_emu_with_snr.
FUNCTION: connect_to_emu_with_snr.
FUNCTION: connect_to_emu_without_snr.
FUNCTION: enum_emu_snr.
Device "NRF52832_XXAA" selected.
FUNCTION: read_device_version.
FUNCTION: read_device_version.
JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.
JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -102.
FUNCTION: close_dll.
FUNCTION: close_dll.
The external board is separately powered, and wired to the development kit in the way described by this diagram:
I'm attaching the circuit for the custom board as well, in case there's an obvious issue with it that I'm not seeing:
(The INT and AD0s are all from sensors, which are connected via I2C.)
