programmer is complaining 'Error while getting readback protection'

[dbur]

1.4.8 programmer is complaining 'Error while getting readback protection' when connecting to the BL651, 453-00005.

Used to work.

Seems to connect OK to BL652-SA-01.

[dbur]

I actually think this is the JLink not connecting up.  When running JLink Commander separately it connects to the BL652 device, but almost always says cannot connect to the BL651.

[dbur]

OK, I have a likely culprit.  There is a disconnect on the board to prevent on board power (Lith Batt) from conflicting with the programmer power.  It turns out some units were probably getting enough power through the just the JTAG signals to connect and then some were not.  Making sure the programmer power was actually connecting through on each board seems to have helped.

[Joakim Jakobsen]

Thanks for sharing the solution.

Br,
Joakim