48 lines
1.4 KiB
Python
48 lines
1.4 KiB
Python
# ------------------------------
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# LED配置
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# ------------------------------
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from maix import camera, display, image, nn, app, sys
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from maix import uart, pinmap, time, err, gpio
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import traceback
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LED_PIN_NAME = "A14"
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LED_GPIO_NAME = "GPIOA14"
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BLINK_INTERVAL = 500 # LED闪烁间隔(ms)
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# ------------------------------
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# 全局业务状态变量
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# ------------------------------
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led = None # LED实例
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serial_dev = None # 舵机串口全局变量
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previous_millis = 0 # LED闪烁计时
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# ------------------------------
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# LED控制
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# ------------------------------
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def init_led():
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"""初始化LED引脚"""
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global led
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try:
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err.check_raise(
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pinmap.set_pin_function(LED_PIN_NAME, LED_GPIO_NAME),
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f"设置LED引脚{LED_PIN_NAME}功能失败"
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)
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led = gpio.GPIO(LED_GPIO_NAME, gpio.Mode.OUT)
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led.value(0) # 初始熄灭
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print(f"LED初始化完成：引脚{LED_PIN_NAME}（{LED_GPIO_NAME}）")
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except Exception as e:
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print(f"LED初始化失败: {e}")
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led = None
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def update_led():
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"""更新LED状态：改为固定闪烁模式"""
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global previous_millis
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if led is None:
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return
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current_millis = time.time_ms()
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if current_millis - previous_millis >= BLINK_INTERVAL:
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previous_millis = current_millis
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led.toggle() |