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47 lines
1.2 KiB
47 lines
1.2 KiB
4 years ago
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.. currentmodule:: pyb
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.. _pyb.LED:
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class LED -- LED object
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=======================
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The LED object controls an individual LED (Light Emitting Diode).
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Constructors
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------------
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.. class:: pyb.LED(id)
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Create an LED object associated with the given LED:
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- ``id`` is the LED number, 1-4.
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Methods
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-------
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.. method:: LED.intensity([value])
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Get or set the LED intensity. Intensity ranges between 0 (off) and 255 (full on).
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If no argument is given, return the LED intensity.
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If an argument is given, set the LED intensity and return ``None``.
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*Note:* Only LED(3) and LED(4) can have a smoothly varying intensity, and
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they use timer PWM to implement it. LED(3) uses Timer(2) and LED(4) uses
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Timer(3). These timers are only configured for PWM if the intensity of the
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relevant LED is set to a value between 1 and 254. Otherwise the timers are
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free for general purpose use.
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.. method:: LED.off()
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Turn the LED off.
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.. method:: LED.on()
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Turn the LED on, to maximum intensity.
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.. method:: LED.toggle()
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Toggle the LED between on (maximum intensity) and off. If the LED is at
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non-zero intensity then it is considered "on" and toggle will turn it off.
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