UIFlow Guide
from m5stack import *
from m5ui import *
from uiflow import *
import unit
setScreenColor(0x222222)
buzzer_0 = unit.get(unit.BUZZER, unit.PORTB)
buzzer_0.set_buzzer(1)
while True:
buzzer_0.set_freq(4000)
wait_ms(2)
buzzer_0.set_freq(4000)
buzzer_0.set_buzzer(1)