pxt-calliope/docs/reference/radio/on-data-packet-received.md

On Data Packet Received

Run part of a program when the micro:bit receives a number or string over radio.

radio.onDataPacketReceived((packet: Packet) => { });

Callback Parameters

• packet - the packet that was received by the radio

Example

This program keeps sending numbers that says how fast the micro:bit is slowing down or speeding up. It also receives numbers for the same thing from nearby micro:bits. It shows these numbers as a bar graph.

basic.forever(() => {
    radio.sendNumber(input.acceleration(Dimension.X));
})
radio.onDataPacketReceived(({ receivedNumber }) => {
    led.plotBarGraph(receivedNumber, 1023);
})

See also

send number, send string, send value, set group

radio