Can no longer connect to pca100028

RE: Can no longer connect to pca100028

jeff — Tue, 23 Dec 2014 17:15:38 GMT

Attempting to identify whether this issue was with the board or my system, I loaded all of the various bits onto my laptop and voilà, I can now connect, download, etc. to the pca100028!

I'm not sure exactly what the specific issue is on my desktop, but I now know that the board is good and an issue with my development machine.

Time to uninstall/re-install all of the bits and drivers on my devbox.

Thanks Kristin for your time and help!

Jeff

RE: Can no longer connect to pca100028

jeff — Tue, 23 Dec 2014 16:40:29 GMT

I should note, in reference to Kristin's comments below, that the LED does initially flash when the board is first plugged attached to the usb. Within 1-2 seconds the flashing stops and it remains solid. Of note is when I launch nRFgo, the board is correctly listed under 'nRF51 development boards' but when I select the listed board, the device's LED turns off while nRFgo attempts to connect, and then turns back on at the same time nRFgo displays 'No device detected'.

RE: Can no longer connect to pca100028

jeff — Tue, 23 Dec 2014 15:37:31 GMT

Hey Kristin, thanks for your insights. The board's led does rapidly flash when first attached to the usb but then quickly changes and remains solid-on. I have rebooted, uninstalled and reinstalled all of the drivers, and nothing. It's most strange that J-Link appears to see the board, correctly reports its s/n, but says it cannot connect.

RE: Can no longer connect to pca100028

FormerMember — Tue, 23 Dec 2014 10:14:24 GMT

The "power" LED on the PCA10028 board indicating that the device is connected to USB, is it lightening constant, or is it blinking rapidly? If it is blinking rapidly, try to reboot your PC. Let me know if that doesn't work.

It should normally work fine to debug on one board, while another board is connected.

"Second debugger connection to the same J-Link detected" would normally occur if you try to do an operation in nRFgo Studio while the chip is in debug mode in Keil.