What is the easiest way to use Arduino libraries into nrf52 projects in Keil on C? Arduino has a lot minus : bad ide, not support debug mode, not optimize code size. But it has one huge plus, you can use any of module ( display, digital sensors or anything else what existing in the world) in 5 minutes after you have seen it first time. I understand Arduino libraries is just c++ code. Maybe write code on c++ on nrf52 helps to make code worked faster. Maybe there's a good method for port Arduino libraries into just C. Because it's so pity to waste so many time for meet nrf52 with something new.
