Current Beaglebone Black images offer support for high resolution timers in Linux kernel. They are controlled by ktime.h library and depend on system's clocks (CLOCK_MONOTONIC, CLOCK_REALTIME,...). The clocks can be looked up from userspace programs with commands clock_gettime <https://linux.die.net/man/2/clock_gettime>, clock_settime and clock_getres from time.h library. What I would like to do is make/write a protocol in c that would synchronize realtime clocks between two boards over ethernet cable connection or internet. My goal is testing how accurately two clocks can be set to the same global time under different protocols. I'm planning to start with ntp, would using an existing library or client make sense here? I read BBB sometimes comes with daemons for ntp, in that case how would I set one board to act as a server in protocol?
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