I recently built a custom PCB centered around the EFM32GG11B520F2048GQ100 chip and I'm trying to use the EFM32GG11 development kit to program and play around with the custom PCB. I set the debug mode to OUT in simplicity studio, and used a ribbon connector to connect the debug connector on the SLSTK3701A to my custom board, but when I go to upload some code to my board it appears that simplicity is not detecting anything, am I missing something? I really don't know where to go from here. I followed the guidelines in AN0043 and AN958 when making my design so I'm fairly certain that the error is not from the custom hardware itself.
You need manually set the target.
This KBA should help:
@Ali al naji,commander should be able to detect the target.