import machine
import uasyncio as asyncio

async def blink(led, period_ms):
    print('blink',period_ms)
    while True:
        led.on()
        print('on')
        await asyncio.sleep_ms(1000)
        led.off()
        print('off')
        await asyncio.sleep_ms(period_ms)

async def main(led1, led2):
    print('main begin')
    asyncio.create_task(blink(led1, 700))
    asyncio.create_task(blink(led2, 400))
    await asyncio.sleep_ms(20_00)
    while True:
        await asyncio.sleep_ms(1000)
        
led1 = machine.Pin(15,machine.Pin.OUT)
led2 = machine.Pin(4,machine.Pin.OUT)
print('here')
asyncio.run(main(led1, led2))
print('game over')