nRf51822-EK and nRF51422-EK not being recognized in Yosemite

[Stephan]

Hi all,

I'm trying to work on my MacBook Air on BLE. I'm running Windows 7 under VirtualBox and using the new Keil µVision5.

But my problem is that whether the nRF51822-EK nor the nRF51422-EK is detected on Mac OS X 10.10.1 Yosemite. I think the problem is on the Segger driver side because when I get into the JLinkExe Command Tool and enter the "ShowEmuList"-Cmd there isn't any device listed.

The LED right next to the J-LINK IC is blinking all the time, too. I also tried that disable_CDC.sh script but it does not work, too.

Can anyone help me getting the EK's recognized?

Kind regards, Stephan

UPDATE: It definitely worked before with Yosemite on 10.10.0. Can anybody on Yosemite please confirm that? Or is there anyone on Yosemite with the nRF51x22-EK running on Yosemite 10.10.1?

[Nguyen Hoan Hoang]

I have Yosemite (current) with Parallels (current) working fine with EK, with Jlink -Ultra, with IDAP-Link (CMSIS-DAP with OpenOCD 0.9). Development using Eclipse on OS X. Switch back & forth between OS X and Windows 8 or XP to use nRFGo, no Problem. A few rare time the JlInk-Ultra blink continuously. All I needed to do then was to disconnect (power off) and reconnect. Everything was fine again. The blinking happened only when I boot with the Jlink connected to USB port but only happened a few times.

[Nguyen Hoan Hoang]

RKNRFGO is a utility for OSX to Flash the softdevice and DFU. It's an alternative solution to nRFGo for OS X users. sourceforge.net/.../

Other alternative low cost Jtag probe is the IDAP-Link which I am developing . It's CMSIS-DAP based. Supports drag & drop and mBed(ing) your board. The hardware is working. I'm working the software now. Currently able to debug nRF51 with it on OS X using OpenOCD and Eclipse. Drag & Drop feature not yet implemented.