# 用一个按钮切换9个LED的闪烁模式：来回闪，流水闪，眨眼闪，亮，关
# 可以进一步改成用中断模式+定时器驱动，减少CPU阻塞

import time
from machine import Pin

# 定义 LED 控制引脚
led_pins = [13, 12, 14, 27, 26, 25, 33, 32, 4]

# 初始化 LED 引脚配置对象列表
led_pin_list = [Pin(pin, Pin.OUT) for pin in led_pins]

# 定义按钮引脚
button_pin = Pin(15, Pin.IN, Pin.PULL_DOWN)

timer = 0
current_blink_led_index = 0

isForward = True
# 来回闪烁
def forward_backward_blink():
    global current_blink_led_index, timer, isForward
    if timer % 100 == 0:
        if isForward:
            current_blink_led_index += 1
            if current_blink_led_index >= len(led_pin_list) - 1:
                current_blink_led_index = len(led_pin_list) - 1
                isForward = False
        else:
            current_blink_led_index -= 1
            if current_blink_led_index <= 0:
                current_blink_led_index = 0
                isForward = True

        for led_pin in led_pin_list:
            led_pin.value(0)
        led_pin_list[current_blink_led_index].value(1)

# 流水闪烁        
def forward_blink():
    global current_blink_led_index, timer
    if timer % 100 == 0:
        current_blink_led_index = (current_blink_led_index + 1) % len(led_pin_list)
        for led_pin in led_pin_list:
            led_pin.value(0)
        led_pin_list[current_blink_led_index].value(1)

# 第一个灯闪3次蓄力再往前
first_blinked = 0
def first_double_blink():
    global current_blink_led_index, timer, first_blinked
    if timer % 100 == 0:
        for led_pin in led_pin_list:
            led_pin.value(0)     

        if current_blink_led_index == 0 and first_blinked < 3:
            first_blinked +=1
        else:
           current_blink_led_index = (current_blink_led_index + 1) % len(led_pin_list)
           first_blinked = 0
        
        if first_blinked % 2 == 0:
            led_pin_list[current_blink_led_index].value(1)

# 亮了不灭，直到下一轮
def more_and_more_blink():
    global current_blink_led_index, timer
    if timer % 100 == 0:
        current_blink_led_index = (current_blink_led_index + 1) % len(led_pin_list)
        for i in range(current_blink_led_index,len(led_pin_list)):
            led_pin = led_pin_list[i]
            led_pin.value(0)
        led_pin_list[current_blink_led_index].value(1)

# 每过一轮，长亮一灯
more_blink_step = 0
def more_and_more_blink2():
    global current_blink_led_index, timer, more_blink_step
    if timer % 100 == 0:
        current_blink_led_index = (current_blink_led_index + 1) % len(led_pin_list)
        if current_blink_led_index == len(led_pin_list) - 1:
            more_blink_step += 1
        if more_blink_step >= len(led_pin_list):
                more_blink_step = 0
        for i in range(more_blink_step,len(led_pin_list)):
            led_pin = led_pin_list[i]
            led_pin.value(0)
        led_pin_list[current_blink_led_index].value(1)

# 两边到中心对称
def twins_blink():
    global current_blink_led_index, timer
    if timer % 100 == 0:
        current_blink_led_index = (current_blink_led_index + 1) % len(led_pin_list)
        for led_pin in led_pin_list:
            led_pin.value(0)
        led_pin_list[current_blink_led_index].value(1)
        led_pin_list[len(led_pin_list)-current_blink_led_index-1].value(1)

#一起闪
def all_led_blink():
    global current_blink_led_index, timer
    if timer % 100 == 0:
        if timer % 200 == 0:
            for led_pin in led_pin_list:
                led_pin.value(0)
        else:
            for led_pin in led_pin_list:
                led_pin.value(1)

# 一起亮
def all_led_on():
    for led_pin in led_pin_list:
        led_pin.value(1)

# 一起灭
def all_led_off():
    for led_pin in led_pin_list:
        led_pin.value(0)

# LED 闪烁函数列表
blink_funcs = [forward_backward_blink, twins_blink, forward_blink, first_double_blink, more_and_more_blink, more_and_more_blink2, all_led_blink, all_led_on, all_led_off]
current_blink_func_index = 0

# 切换 LED 闪烁函数
def switch_led_blink():
    global current_blink_func_index, current_blink_led_index
    current_blink_led_index = 0
    current_blink_func_index = (current_blink_func_index + 1) % len(blink_funcs)

# 防按钮点击时抖动
button_first_check = button_second_check = False
# 主循环，用于执行 LED 闪烁函数

while True:
    if button_pin.value():
        if not button_second_check:
            if button_first_check:
                button_second_check = True
                switch_led_blink()
            else:
                button_first_check = True
    else:
        button_first_check = button_second_check = False

    time.sleep_ms(10)
    
    timer += 10
    if timer >= 60000:
        timer = 0

    blink_funcs[current_blink_func_index]()