I have two DA14695-00HQDEVKT-U kits and have loaded the WiRa ranging sample app from the WiRa SDK.
I do not have mikrobus displays but that is ok as I have defined that out from the builds.
I have the two devices connected to terminal emulators and I can see the outputs on power up.
When I have the default power setting :- 5V from VBUS J2:pin2-3 I can see the initiator connect to the responder and I see the distance being shown.
That is all tethered to my PC.
So I thought let me now power the responder via J3:pin1-2 so that there is power on the VBAT pin of rh 14695 and obviously 0v on VBUS because there is no jumper on J2.
I was expecting to see the initiator to connect to the responder and show me some range readings -- did not work.
(I stress, the initiator just shows 'peripheral device not found')
Which means if I were to power the responder from a battery it is not going to work. Therefore I cannot perform any range test in open space outside over a longer range than just the 1.5m I can do on my desk.
I have not modified the firmware to operate 'in battery mode' as I see no documentation that I need to do that.
Is it the case that the logger in the responder is blocking because the uart buffer is full?
Look forward to hearing from someone.