UIFlow Guide
from m5stack import *
from m5stack_ui import *
from uiflow import *
import unit
screen = M5Screen()
screen.clean_screen()
screen.set_screen_bg_color(0xFFFFFF)
flash_0 = unit.get(unit.FLASH_LIGHT, unit.PORTB)
flash_0.flash_ctrl(7, False, 2)
flash_0.flash_ctrl(0, False, 2)