I'm working with a Fanstel BT40 module which includes an nRF5340 and nRF21540 FEM. As a starting point I'm using the scan_adv example, which is working out-of-the-box but obviously doesn't support the FEM. I added an overlay and .conf for the child_image and I'm reasonably sure that these files are being used when the network processor firmware is built, but I'm not seeing any activity on the GPIO pins that control the FEM, and I can't see any improvement in performance, which makes me think that the FEM is not being used. I'm fairly sure that all the ingredients are there. Would somebody please have a look at the project and see what's up?
Thanks in advance,
