import uasyncio as asyncio
from machine import Pin ,PWM

led = Pin(2, Pin.OUT)

buzzer = PWM(Pin(5))
buzzer.freq(1000)
buzzer.duty(0)

async def blink_led():
    while True:
        led.value(1)
        await asyncio.sleep_ms(500)
        led.value(0)
        await asyncio.sleep_ms(500)
async def beep_buzzer():
    while True:
        buzzer.duty(512)
        await asyncio.sleep_ms(200)
        buzzer.duty(0)
        await asyncio.sleep_ms(800)
async def main():
    asyncio.create_task(blink_led())
    asyncio.create_task(beep_buzzer())
    while True:
        await asyncio.sleep_ms(1000)

asyncio.run(main())