73 lines
1.6 KiB
Python
73 lines
1.6 KiB
Python
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import ntptime
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import esp
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from time import sleep, localtime
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from machine import Pin, Timer
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TIMEZONE = 3
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RESYNC = 7200 # Resync once in two hours
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print("Press Ctrl-C now abort main.py execution and to retain keyboard input")
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sleep(1)
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# Configure powersave
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esp.sleep_type(esp.SLEEP_LIGHT)
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# Note that keyboard input is lost beyond this point!
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clock = Pin(3, mode=Pin.OUT)
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latch = Pin(0, mode=Pin.OUT)
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data = Pin(2, mode=Pin.OUT)
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blink = 0
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lookup = 11, 9, 12, 8, 0, 4, 1, 3, 2, 10
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countdown = 0
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def bitbang_bit(value):
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if value & 1:
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data.on()
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else:
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data.off()
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clock.on()
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clock.off()
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def bitbang_digit(digit):
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bitbang_bit(blink)
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for i in range(0,4):
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bitbang_bit(lookup[digit] << i >> 3)
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bitbang_bit(blink)
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bitbang_bit(blink)
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bitbang_bit(blink)
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timer = Timer(-1)
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def schedule(delay=0):
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global countdown
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if countdown <= 0:
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ntptime.settime()
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countdown = RESYNC
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print("Resync")
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countdown -= 1
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if delay:
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timer.init(period=1000, mode=Timer.ONE_SHOT, callback=dump)
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else:
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dump()
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def dump_time(hour, minute, second):
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print("Time is %02d:%02d:%02d" % (hour, minute, second))
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bitbang_digit(hour // 10)
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bitbang_digit(hour % 10)
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bitbang_digit(minute // 10)
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bitbang_digit(minute % 10)
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bitbang_digit(second // 10)
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bitbang_digit(second % 10)
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def dump(t=None):
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global blink
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year, month, day, hour, minute, second, _, millis = localtime()
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dump_time((hour + TIMEZONE) % 24, minute, second)
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latch.on()
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latch.off()
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blink = 1-blink
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schedule(1000-millis)
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schedule()
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