pxt-calliope/docs/reference/radio/send-string.md
2016-10-24 16:30:21 -07:00

44 lines
878 B
Markdown

# Send String
Sends a string to other micro:bits in the area connected by radio. The
maximum string length is 19 characters.
```sig
radio.sendString("Hello!")
```
### Parameters
* `msg` is a [string](/reference/types/string) to send by radio.
### Example: Two-way radio
If you load this program onto two or more micro:bits, you can send a
code word from one of them to the others by pressing button `A`. The
other micro:bits will receive the code word and then show it.
```blocks
input.onButtonPressed(Button.A, () => {
radio.sendString("Codeword: TRIMARAN")
basic.showString("SENT");
})
radio.onDataPacketReceived(({ text }) => {
basic.showString(text);
});
```
### ~hint
A radio that can both transmit and receive is called a _transceiver_.
### ~
### See also
[on data packet received](/reference/radio/on-data-packet-received)
```package
radio
```