35 lines
982 B
Markdown
35 lines
982 B
Markdown
|
# Send Number
|
||
|
|
|
||
|
|
Broadcasts a number data packet to other micro:bits connected via ``radio``.
|
||
|
|
|
||
|
|
## Important Security Consideration
|
||
|
|
|
||
|
|
The functions in the ``radio`` namespace allow the BBC micro:bit to communicate with other micro:bits.
|
||
|
|
|
||
|
|
This API does not contain any form of encryption, authentication or authorization. It's purpose is solely for use as a teaching aid to demonstrate how simple communications operates, and to provide a sandpit through which learning can take place.
|
||
|
|
|
||
|
|
For serious applications, BLE should be considered a substantially more secure alternative.
|
||
|
|
|
||
|
|
```sig
|
||
|
|
radio.sendNumber(0)
|
||
|
|
```
|
||
|
|
|
||
|
|
### Parameters
|
||
|
|
|
||
|
|
* packet - a number to be transmitted.
|
||
|
|
|
||
|
|
### Examples
|
||
|
|
|
||
|
|
Broadcasts the value of ``acceleration`` x to other micro:bits.
|
||
|
|
|
||
|
|
```blocks
|
||
|
|
input.onButtonPressed(Button.A, () => {
|
||
|
|
radio.sendNumber(input.acceleration(Dimension.X))
|
||
|
|
})
|
||
|
|
```
|
||
|
|
|
||
|
|
### See also
|
||
|
|
|
||
|
|
[receive number](/microbit/input/receive-number), [on data received](/microbit/reference/radio/on-data-received)
|
||
|
|
|