How to debug several nRF51 DKs using Eclipse

[Elm]

Hi, I would like to have several nRF51 development cards connected to my computer at the same time using the USB debug port. The serial port and the RTT port work when several cards are connected, but when compiling and trying to start the debugger, only one card can be connected at the same time or I will get the error message:

J-Link GDB Server failed: 
Could not connect to J-Link. Please check if plugged into USB port or Ethernet switch.

For more details, see the JLinkGDBServerCL.exe console.

Any help would be appreciated.

regards, Elm

[Elm]

Hi,

I found an answer to that problem myself, from studying SEGGERs documentation and comparing to the Debug Configration screen.

You can overcome this by problem adding the USB serial number of the device to the Debug Configuration screen. (Look at the red "1".)

I guess there is a way to find out the USB serial number of the device in a better way than mine: I started the JLink RTT Viewer with two devices connected and got the following popp where i was asked to choose between devices:

regards, Elm

[Vidar Berg]

Segger will normally prompt you to choose the device through the 'emulator selection' popup when starting a debug session (same as RTT). I wonder if it could be related to the '-nogui' option listed under 'other options' in your screenshot above?