9 years, 1 month ago.

Not Work: CJMCU-Jlink

FYI/Warning:

• My JLink-Lite died and I couldn't get another, so I tried a CJMCU-Jlink bought off the net (small JLINK board $7$10 on EBay)
• *CJMCU-Jlink NOT working with nRF51822*
• I will continue to use a wired Jlink port from my nRF51822-EK (This proves also not a wiring issue or target issue)

If anyone does have the CJMCU-Jlink working, please let me know what you did to make it work

• Mine connects as a Segger, and nRFgo Studio prompted and did a firmware upgrade to the CJMCU-Jlink
• nRFgo studio lists the CJMCU-Jlink as a programmer
• But nRFgo studio doesn't see the connected nRF51822 (SWDIO, SWDCLK, GND) or (SWDIO, SWDCLK, GND, Vcc)
• nRF51822-EK wired Jlink to my target works fine.

Note: the CJMCU-Jlink has 0.1" header, not the miniature connector on JLink-Lite that came with *older nRF51822-DK*