Testing `constant_current_range` in https://github.com/adafruit/Adafruit_CircuitPython_AW9523/pull/6

code.py

import board
import adafruit_aw9523  # LED driver
from time import sleep

i2c = board.I2C()
aw = adafruit_aw9523.AW9523(i2c)
aw.constant_current_range = adafruit_aw9523.AW9523_2_4_RANGE

aw.LED_modes = 0xFFFF
aw.directions = 0xFFFF

sleep(3)
while True:
    for level in [1, 2, 128, 255]:
        print(f"level = {level}")
        for rangeId in [adafruit_aw9523.AW9523_4_4_RANGE,adafruit_aw9523.AW9523_3_4_RANGE,adafruit_aw9523.AW9523_2_4_RANGE,adafruit_aw9523.AW9523_1_4_RANGE]:
            aw.constant_current_range = rangeId
            aw.set_constant_current(1, level) # setting `constant_current_range` only takes effect after this is called.
            print(f"constant_current_range = {rangeId}")
            sleep(4)