33 lines
945 B
Markdown
33 lines
945 B
Markdown
# Set Pull
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Configure the electrical pull of the specified pin.
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Many micro:bit pins can be configured as _pull-ups_. For example, a
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pull-up can set a pin's voltage to high (3.3 volts, or `1` when
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calling [digital read pin](/reference/pins/digital-read-pin)). If one
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end of a button is connected to ``P0`` (set to high) and the other end
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is connected to ``GND`` (0 volts), then when you press the button,
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``P0`` is driven to 0 volts, and the micro:bit software can detect a
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button press.
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```sig
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pins.setPull(DigitalPin.P9, PinPullMode.PullDown);
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```
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### Parameters
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* ``pin``: The micro:bit hardware pin to configure (``P0``-``P20``)
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* ``to``: The pull to which to set the pin (**down**, **up**, or **none**)
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### Example
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The following example sets the pull of pin ``P0`` to **up** (high).
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```blocks
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pins.setPull(DigitalPin.P0, PinPullMode.PullUp);
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```
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### See also
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[BBC micro:bit | mbed](https://developer.mbed.org/platforms/Microbit/)
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