40 lines
1001 B
Markdown
40 lines
1001 B
Markdown
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# On Data Packet Received
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Run part of a program when the micro:bit receives a
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[number](/reference/types/number) or [string](/reference/types/string) over ``radio``.
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```sig
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radio.onDataPacketReceived((packet: Packet) => { });
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```
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### Callback Parameters
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* ``packet`` - the [packet](/reference/radio/packet) that was received by the radio
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### Example
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This program keeps sending numbers that says how fast the micro:bit is
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slowing down or speeding up. It also receives numbers for the same
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thing from nearby micro:bits. It shows these numbers as a
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[bar graph](/reference/led/plot-bar-graph).
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```blocks
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basic.forever(() => {
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radio.sendNumber(input.acceleration(Dimension.X));
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})
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radio.onDataPacketReceived(({ receivedNumber }) => {
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led.plotBarGraph(receivedNumber, 1023);
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})
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```
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### See also
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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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