pxt-calliope/docs/reference/radio/send-string.md

46 lines
949 B
Markdown
Raw Normal View History

2016-05-25 02:53:13 +02:00
# Send String
Sends a string to other micro:bits in the area connected by radio.
2016-05-25 02:53:13 +02:00
```sig
radio.sendString("Hello!")
2016-05-25 02:53:13 +02:00
```
### Parameters
2016-07-18 23:04:15 +02:00
* `msg` is a [string](/reference/types/string) to send by radio.
2016-05-25 02:53:13 +02:00
2016-06-10 00:30:47 +02:00
### Simulator
This function only works on the micro:bit, not in browsers.
### Example: Two-way radio
2016-05-25 02:53:13 +02:00
2016-07-18 23:04:15 +02:00
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.
2016-05-25 02:53:13 +02:00
```blocks
input.onButtonPressed(Button.A, () => {
radio.sendString("Codeword: TRIMARAN")
basic.showString("SENT");
2016-05-25 02:53:13 +02:00
})
radio.onDataReceived(() => {
basic.showString(radio.receiveString());
});
2016-05-25 02:53:13 +02:00
```
### ~hint
A radio that can both transmit and receive is called a _transceiver_.
### ~
2016-05-25 02:53:13 +02:00
### See also
[receive string](/reference/radio/receive-string), [on data received](/reference/radio/on-data-received)
```package
radio
```