import machine
import time

#1 初始化可變電阻(使用 GP26 作為頻比輸入腳位)
pot = machine.ADC(26)

#  2 初始化霹靂燈 LED 腳位 ( 假設使用 GP11 到 GP15 共五顆 LED )
led_pins = [11,12,13,14,15]
leds = []
for pin_num in led_pins:
    leds.append(machine.Pin(pin_num, machine.Pin.OUT))

print("=== 可變電阻控制霹靂燈速度 啟動 ===")

while True:
    # 讀取可變電阻的數值 , 範圍是 0 - 65535
    pot_value = pot.read_u16()

    delay_time = 0.05 + (pot_value / 65535) * 0.5

    print(f"電阻值: {pot_value:5d} | 閃爍延遲: {delay_time:.2f} 秒")
    for led in leds:
        led.value(1) #點亮

        pot_value = pot.read_u16()
        delay_time = 0.05 + (pot_value / 65535) * 0.5
        time.sleep(delay_time)

        led.value(0)
    for led in reversed(leds[1:-1]):
        led.value(1)

        pot_value = pot.read_u16()
        delay_time = 0.05 + (pot_value / 65535) * 0.5
        time.sleep(delay_time)

        led.value(0)