Transition from arduino ide to nRF connect SDK + antenna question

[Oondraj]

Hello, I want to build a custom bluetooth watch, so far I have been using adafruit nRF52840 feather (RAYTAC MDBT50Q-P1MV2) with arduino ide for prototyping. Im designing a custom pcb that i want to be inside a metal case. I have found PIFA, that should be able to operate outside, if I'm wrong please correct me. I want to use 2 PIFAs (something from antenova) with SKY13351-378LF, ai recommended me to use nRF connect SDK, so I could turn on automatic switching in firmware conf. (CONFIG_BT_CTLR_ANT_DIV=y), would that be possible? How hard is it to transition from arduino ide to nRF connect SDK? I'm truly a beginner to designing antenna traces and working with antennas overall, if you could recommend some tutorials that would be great. Any help is appreciated.

[Hung Bui]

Hi Ondrej, 

I don't think we have such configuration CONFIG_BT_CTLR_ANT_DIV. Your AI may have invented it. 

Could you let us know what your plan's of using 2 antenna for ? 

As far as I know there isn't a library for using 2 antennas for general purpose in nRF Connect SDK. 

[Oondraj]

Thanks for the reply, I want to use PIFA for bluetooth communication, but they have kind of a blind spot and I'm worried that it may cause connection issues, so I thought that by putting one on each side would greatly improve this. I really want a metal case, but it seems that plastic case would be so much easier to deal with.