diff --git a/docs/reference/pins/digital-write-pin.md b/docs/reference/pins/digital-write-pin.md index 90d862de..72771996 100644 --- a/docs/reference/pins/digital-write-pin.md +++ b/docs/reference/pins/digital-write-pin.md @@ -1,19 +1,29 @@ # Digital Write Pin -Write the value ``0`` or ``1`` to the specified (digital) [pin](/device/pins). **Some pins are also used by the display, read the [pin documentation ](/device/pins) carefully.** +Write a **digital** (`0` or `1`) signal to a [pin](/device/pins) on +the micro:bit board. ```sig pins.digitalWritePin(DigitalPin.P1, 1) ``` +### ~avatar + +Some pins are also used by the [LED screen](/device/screen). +Please read the [page about pins](/device/pins) carefully. + +### ~ + ### Parameters -* name - the pin name (``P0``, ``P1``, ``P2``, ...) -* value - [Number](/reference/types/number); 0 or 1 +* a [string](/reference/types/string) that stores the name of the pin (``P0``, ``P1``, or ``P2``, up through ``P20``) +* a [number](/reference/types/number) that can be either `0` or `1` ### Example: football score keeper -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: +This program reads pin `P0` to find when a goal is scored. When `P0` +is `1`, the program makes the score bigger and plays a buzzer sound +through `P2` with ``digital write pin``. ```blocks let score = 0 @@ -29,7 +39,25 @@ basic.forever(() => { }) ``` +This program is a remote control for the score keeper program. If you +connect `P1` on the remote control micro:bit to `P0` on the score +keeper micro:bit, you can press button `B` on the remote. This program +will use ``digital write pin`` to make the other micro:bit buzz and +make the score bigger. + +```blocks +input.onButtonPressed(Button.B, () => { + pins.digitalWritePin(DigitalPin.P1, 1); + basic.pause(500); + pins.digitalWritePin(DigitalPin.P1, 0); +}); +``` + ### See also -[micro:bit pins](/device/pins), [digital read pin](/reference/pins/digital-read-pin), [analog read pin](/reference/pins/analog-read-pin), [analog write pin](/reference/pins/analog-write-pin), [on pin pressed](/reference/input/on-pin-pressed) +[micro:bit pins](/device/pins), +[digital read pin](/reference/pins/digital-read-pin), +[analog read pin](/reference/pins/analog-read-pin), +[analog write pin](/reference/pins/analog-write-pin), +[on pin pressed](/reference/input/on-pin-pressed)