Ejemplo 3 del temporizador K210

from machine import Timer
import time
from Maix import GPIO
from fpioa_manager import fm

fm.register(0, fm.fpioa.GPIO0, force=True)
fm.register(17, fm.fpioa.GPIO1, force=True)

led1 = GPIO(GPIO.GPIO0, GPIO.OUT)
led2 = GPIO(GPIO.GPIO1, GPIO.OUT)

status=1

def on_timer(timer):
   
    global status
    status = 0 if (status == 1) else 1
    #print("time up:",timer)
    #print(status)
    #print(~status)
    led1.value(status)
    
    #print("param:",timer.callback_arg())  MODE_PERIODIC  MODE_ONE_SHOT

tim = Timer(Timer.TIMER0, Timer.CHANNEL0, mode=Timer.MODE_PERIODIC, period=1000, callback=on_timer, arg=on_timer)
# tim = Timer(Timer.TIMER0, Timer.CHANNEL0, mode=Timer.MODE_PERIODIC, period=1, unit=Timer.UNIT_S, callback=on_timer, arg=on_timer, start=False, priority=1, div=0)

#print("period:",tim.period())
tim.start()
while(True):
    print("wait tim")
    time.sleep(5)
    
    
#tim.start()
#time.sleep(5)
#tim.stop()
#time.sleep(5)
#tim.restart()
#time.sleep(5)
#tim.stop()
#del tim