I have used the NRF51822 evaluation kit for a while now to design a product and it performed perfectly up until a few days ago: the onboard segger now fails to connect to the Nordic. Whatever I try to do, program or debug, I get an error message stating there is nothing connected to the segger. This is not true, the evaluation is still as it was and the programming switch is in the on position. I also tried connecting the segger chip to a NRF51822 on a prototype board by soldering wires and disconnecting the onboard NRF using the switch, but this gives the same errors. This is the error message I get from J-link commander:
SEGGER J-Link Commander V4.78 ('?' for help) Compiled Oct 4 2013 19:17:43 DLL version V4.78, compiled Oct 4 2013 19:17:21 Firmware: J-Link OB-SAM3U128 V1 compiled Sep 19 2013 20:18:59 Hardware: V1.00 S/N: 480203618 VTarget = 3.300V
****** Error: TCK (pin 9) low, but should be high. Please check target hardware.
No devices found on JTAG chain. Trying to find device on SWD. No device found on SWD. Did not find any core. Failed to identify target. Trying again with slow (4 kHz) speed.
****** Error: TCK (pin 9) low, but should be high. Please check target hardware.
No devices found on JTAG chain. Trying to find device on SWD. No device found on SWD. Did not find any core. J-Link>
Does anybody know what could be the problem here? Thanks in advance.
