50 lines
1.0 KiB
Markdown
50 lines
1.0 KiB
Markdown
# send String
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Sends a string to other @boardname@s in the area connected by radio. The
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maximum string length is 19 characters.
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```sig
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radio.sendString("hi!")
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```
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## Parameters
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* **msg**: a [string](/types/string) to send by radio.
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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: Two-way radio
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If you load this program onto two or more @boardname@s, you can send a
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code word from one of them to the others by pressing button `A`. The
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other @boardname@s will receive the code word and then show it.
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```blocks
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input.input.onButtonEvent(Button.A, DAL.MICROBIT_BUTTON_EVT_CLICK, () => {
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radio.sendString("Codeword: TRIMARAN")
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basic.showString("SENT");
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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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## ~hint
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A radio that can both transmit and receive is called a _transceiver_.
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## ~
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## See also
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[on received string](/reference/radio/on-received-string)
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```package
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radio
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``` |