Kalendarz + zagarek dla GPIO

from time import gmtime, strftime, sleep
import sched, time

s=sched.scheduler(time.time,time.sleep)
def printt(sc):
    lcd = HD44780()
    lcd.message("Witaj!"+strftime("%Y-%m-%d", gmtime())+"\n"+strftime("%H:%M:%S", gmtime()))
    sc.enter(10,1,printt,(sc,))
s.enter(10,1,printt,(s,))
s.run()