jlink lite replacement

[Paul Russell]

My JLink Lite seems to have died (nRFgo Studio can see it, but can't connect to a target). What is the latest replacement for a JLink Lite?

Preferably something that can work with my own future PCB, and isn't hundreds of dollars.

I have an nRF51822-EK and an nRF51822-mkit, but I don't see an easy way to isolate their SWDIO/SWCLK signals from the onboard nRF51822.

[Thomas Olson]

Here is the cut and jumps to the nRF51822-mkit to use it to program other nRF51822 projects using the SWDIO/SWCLK signals.

developer.mbed.org/.../

[Paul Russell]

I actually did similar on the nRF51822-EK as I didn't want to chance damaging my mkit. To use EK as a JLINK I:

1. turn off SW4 (isolates JLINK signals)
2. Soldered on wires to R15 and R16 (side away from MCU) and Gnd (any header)
3. Signals: GND, SWDIO=T_TMS=R15, SWCLK=T_TCK=R16
4. Connected signals to a header and glue gunned header to EK

This works. EK's BLE stays active it doesn't cause me trouble, and unplugging any connection to header and turning on SW4 re-enables normal EK functionality.