41 lines
1.3 KiB
Markdown
41 lines
1.3 KiB
Markdown
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# Digital Read Pin
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The digital read pin function. #digitalreadpin #docs
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Digitally read the specified [pin](/microbit/device/pins) (``P0``, ``P1``, ``P2``, ...) as digital. **Some pins are also used by the display, read the [pin documentation ](/microbit/device/pins) carefully.**
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```sig
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pins.digitalReadPin(DigitalPin.P3)
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```
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### Parameters
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* name - the pin name ``P0``, ``P1``, ``P2``, ...
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### Returns
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* [Number](/microbit/reference/types/number) - 0 or 1
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### Example: football score keeper
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The following example reads `P0` to determine when a goal is scored. When `P0 = 1`, the code uses `digital write pin` to play a buzzer sound:
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```blocks
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let score = 0
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basic.showNumber(score)
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basic.forever(() => {
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if (pins.digitalReadPin(DigitalPin.P0) == 1) {
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score++;
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pins.digitalWritePin(DigitalPin.P2, 1)
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basic.showNumber(score)
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basic.pause(1000)
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pins.digitalWritePin(DigitalPin.P2, 0)
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}
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})
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```
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### See also
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[micro:bit pins](/microbit/device/pins), [digital write pin](/microbit/reference/pins/digital-write-pin), [analog read pin](/microbit/reference/pins/analog-read-pin), [analog write pin](/microbit/reference/pins/analog-write-pin), [on pin pressed](/microbit/reference/input/on-pin-pressed), [pin is pressed](/microbit/reference/input/pin-is-pressed)
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