52 lines
1.4 KiB
Markdown
52 lines
1.4 KiB
Markdown
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# on Received String
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Run part of a program when the @boardname@ receives a [string](/types/string) over ``radio``.
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```sig
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radio.onReceivedString(function (receivedString) {})
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```
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## Parameters
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* **receivedString**: The [string](/types/string) that was sent in this packet or the empty string if this packet did not contain a string. See [send string](/reference/radio/send-string) and [send value](/reference/radio/send-value)
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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
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This program continuously sends a cheerful message. It also receives a messages from nearby @boardname@s. It shows these messages on the screen.
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```blocks
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basic.forever(() => {
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radio.sendString("I'm happy");
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})
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radio.onReceivedString(function (receivedString) {
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basic.showString(receivedString)
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})
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```
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## Troubleshooting
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The ``||radio:on received string||`` event can only be created once, due to the hardware restrictions.
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The radio set group might need to be set, synchronized, before the radio events will function.
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## See also
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[on received number](/reference/radio/on-received-number),
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[received packet](/reference/radio/received-packet),
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[send number](/reference/radio/send-number),
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[send string](/reference/radio/send-string),
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[send value](/reference/radio/send-value),
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[set group](/reference/radio/set-group)
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```package
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radio
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```
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