54 lines
1.2 KiB
Markdown
54 lines
1.2 KiB
Markdown
# send Value
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Send a [string]() and [number]() together by ``radio`` to other @boardname@s.
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The maximum [string]() length is 8 characters.
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```sig
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radio.sendValue("name", 0);
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```
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## Parameters
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* **name**: a [string](/types/string) that is the name of the value to send.
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* **value**: a [number](/types/number) that is the value to send.
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## ~ hint
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Watch this video to see how the radio hardware works on the @boardname@:
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https://www.youtube.com/watch?v=Re3H2ISfQE8
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## ~
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## Example: Broadcasting acceleration
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This program sends your @boardname@'s **acceleration** (amount it is
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speeding up or slowing down) in the `x` direction (left and right) to
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other @boardname@s. This kind of program might be useful in a model car
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or model rocket.
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```blocks
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radio.setGroup(99)
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input.input.onButtonEvent(Button.A, DAL.MICROBIT_BUTTON_EVT_CLICK, () => {
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radio.sendValue("acc", input.acceleration(Dimension.X))
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})
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```
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This program receives the string and number sent by the last program.
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Then it shows them on the LED screen.
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```blocks
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radio.setGroup(99)
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radio.onReceivedValue(function (name, value) {
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basic.showString(name);
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basic.showNumber(value);
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});
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```
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## See also
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[on received value](/reference/radio/on-received-value)
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```package
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radio
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``` |