Hello
I would like to have a 1 ms resolution for creating lap times. As polling with usleep don't give more then 20 ms res I have tired a blocking loop that I understand is used in other projects. But if I do ms sleep with 1 ms and using the blocking method CPU is up to 90 % ( showed via the # top ) I'm not used to find my way around in the kernel src-code but how difficult is for a 'beginner' to add an user interrupt handling vs I/O pin ? Perhaps there are already kernels built that has user-interrupt handling vs input I/O added ? Thanks for any input BR, Joachim Osbeck
