Putting the nRF51822 back into a factory state (retained registers)

[Eliot Stock]

I've been running various code on a 51822 that has used PPI, timers, events, GPIO pin config and so on. Supposing I've lost track of what state the retained registers on the device are in, how do I put an nRF51822 back into a factory state?

Would the erase-all target in the pure-gcc Makefiles do this?

erase-all.jlink:
	# Write to NVMC to enable erase, do erase all, wait for completion. reset
	echo "w4 4001e504 2\nw4 4001e50c 1\nsleep 100\nr\nexit\n" > erase-all.jlink

[Ole Morten]

Yes, that and a power toggle should be sufficient. As you can see in section 11.1.6, everything (except for flash) is reset when you power toggle the chip.