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from time import sleep, localtime
from machine import Pin, Timer
clock = Pin(3, mode=Pin.OUT)
latch = Pin(0, mode=Pin.OUT)
data = Pin(2, mode=Pin.OUT)
blink = 0
lookup = 11, 9, 12, 8, 0, 4, 1, 3, 2, 10
def bitbang_bit(value):
if value & 1:
data.on()
else:
data.off()
clock.on()
clock.off()
def bitbang_digit(digit):
bitbang_bit(blink)
for i in range(0,width):
bitbang_bit(lookup[digit] << i >> 3)
bitbang_bit(blink)
bitbang_bit(blink)
bitbang_bit(blink)
timer = Timer(-1)
def schedule(delay=0):
if delay:
timer.init(period=1000, mode=Timer.ONE_SHOT, callback=dump)
else:
dump()
def dump_time(hour, minute, second):
bitbang_digit(hour // 10)
bitbang_digit(hour % 10)
bitbang_digit(minute // 10)
bitbang_digit(minute % 10)
bitbang_digit(second // 10)
bitbang_digit(second % 10)
def dump(t=None):
global blink
year, month, day, hour, minute, second, _, millis = localtime()
dump_time((hour + 3) % 24, minute, second)
latch.on()
latch.off()
blink = 1-blink
schedule(1000-millis)
schedule()