Disable debug unit with JLink still connected?

[Christopher Mason]

I'm measuring current consumption on nRF51822, making code changes and then flashing/debugging via JLink GDBServer and gdb.

Right now it seems like I either have to physically disconnect my board from the JLink Lite or disconnect the JLink from USB after uploading the program. If I simply reset the chip, the debug unit stays enabled and I see ~1.5 mA current draw. Having to physically plug and unplug is a bit tedious.

Is there a way for me to disable the Segger and reset the chip such that when it resets, DEBUG is off and it does not draw the associated current? Preferably some way I can automate via a Makefile? I've tried switching to the JTAG interface via JLinkExe but that doesn't help.

Thanks!

-c

[Chris]

I am using something like this in my Makefile:

echo "device nrf51822\nw4 4001e504 2\nw4 40000544 1\nr\nexit\n" > $(OUTPUT_BINARY_DIRECTORY)/pin-reset.jlink

Not sure what you mean by TMS and TCK?