import time
import rp2pio
import board
import adafruit_pioasm

piocode = """
.program hello
loop:
  pull
  out pins, 2
  jmp loop
"""

assembled = adafruit_pioasm.assemble(piocode)

sm = rp2pio.StateMachine(
    assembled,
    frequency=2000,
    first_out_pin=board.GP0,
    out_pin_count=2
)

while True:
  sm.write(bytes([0b11]))
  time.sleep(1)
  sm.write(bytes([0]))
  time.sleep(1)