cube-kl/firmware/scripts/time_sync.py

#/usr/bin/env python3

import serial
import time

def main():
    ser = serial.Serial('/dev/kaboard', 38400, timeout=10)
    ser.flush()

    while True:
        line = ser.readline()
        while len(line) == 0:
            line = ser.readline()

        line = line.decode("ascii")[:-1]
        print("[%s] >> %s" % (time.strftime('%H:%M:%S'), line))
        if line == "?":
            timestamp = "%d\n" % int(time.time())
            print("[%s] << %s" % (time.strftime('%H:%M:%S'),timestamp[:-1]))
            ser.write(timestamp.encode('ascii'))



if __name__ == '__main__':
    main()