pxt-microbit/docs/reference/serial/on-data-received.md

micro:bit target for Microsoft MakeCode (PXT)

# on Data Received

Registers an event to be fired when one of the delimiter is matched.

```sig
serial.onDataReceived(",", function() {})
```

## Parameters

* `delimiters` is a [string](/types/string) containing any of the character to match

## Example

Read values separated by a comma `,`.

```blocks
serial.onDataReceived(serial.delimiters(Delimiters.Comma), function() {
    basic.showString(serial.readUntil(serial.delimiters(Delimiters.Comma)))
})
```

## See also

[serial](/device/serial),
[write line](/reference/serial/write-line),
[write value](/reference/serial/write-value)