main.py -- put your code here!

from pyb import LED, OLED, UART

创建 OLED 对象

oled = OLED()

清空 OLED

oled.fill(0) oled.show()

创建 LED 对象

led1 = LED(1) led2 = LED(2) led3 = LED(3) led4 = LED(4)

创建 LED 数组

led = [led1, led2, led3, led4]

for l in led: l.off()

创建 BLE 对象

ble = UART("BLE")

初始化 BLE

ble.init(57600, bits=8, parity=None, stop=1, timeout=100)

while True: # 读取 BLE 数据 data = ble.read(10)

if data != None and len(data) == 6: # 数据格式: [led1/2/3/4=0/1]
    if data[:3] == b'led':
        try:
            tag = int(data[3])-48
            value = int(data[5])-48
        except ValueError: # tag 或 value 不是纯数字
            continue

        if tag >= 1 and tag <= 4:
            if value == 0:
                led[tag-1].off()
            else:
                led[tag-1].on()

        # 清空 OLED 缓存
        oled.fill(0)

        # 更新 OLED 内容
        showdata = "led%d=%d" % (tag, value)

        # 更新 OLED 显示
        oled.text(showdata, 16, 10, 1)
        oled.show()

        # 写回到 UART
        ble.write(data)

# 清空 UART 缓存
data = ble.read(100