from machine import Pin,Timer
from utime import sleep

ledr=Pin(15,Pin.OUT)
ledb=Pin(13,Pin.OUT)

myTimer_r=Timer(1)
myTimer_b=Timer(2)

def toggle_ledr(myTimer_r):
    ledr.on()
    sleep(0.5)
    ledr.off()
    

def toggle_ledb(myTimer_b):
    ledb.on()
    sleep(0.5)
    ledb.off()
    

myTimer_r.init(period=1000, mode=Timer.PERIODIC, callback=toggle_ledr)
myTimer_b.init(period=1000, mode=Timer.PERIODIC, callback=toggle_ledb)

while True:
    sleep(10)
    print("just sleep")