pxt-calliope/docs/reference/radio/write-received-packet-to-serial.md

Write Received Packet To Serial

Writes the last packet received by the radio to serial in JSON format. Should be called within a callback to on data packet received.

radio.writeReceivedPacketToSerial();

Data received format

The format for received data printed to serial is as follows:

• send number: {v:ValueSent,t:MicrobitTimeAlive,s:SerialNumber}
• send value: {v:ValueSent,t:MicrobitTimeAlive,s:SerialNumber,n:"Name"}
• send string: {t:MicrobitTimeAlive,s:SerialNumber,n:"Text"}

Examples

When radio data is received (after pressing the A button on the second micro:bit), this program sends temperature data to serial.

input.onButtonPressed(Button.A, () => {
    radio.sendNumber(input.temperature());
});
radio.onDataPacketReceived(() => {
    radio.writeReceivedPacketToSerial();
});

Sample output to serial when A button pressed:

{v:27,t:323,s:0}

See also

send number, send value, send string, on data packet received

radio