Deprecating old radio APIs and fixing docs (#289)

docs/reference/radio/send-value.md

@@ -1,6 +1,7 @@
 # Send Value
 
 Send a [string]() and [number]() together by ``radio`` to other micro:bits.
+The maximum [string]() length is 12 characters.
 
 ```sig
 radio.sendValue("data", 0);
@@ -11,10 +12,6 @@ radio.sendValue("data", 0);
 * ``name`` is a [string](/reference/types/string) to send by radio
 * ``value`` a [number](/reference/types/number) to send by radio
 
-### Simulator
-
-This function only works on the micro:bit, not in browsers.
-
 ### Example: Broadcasting acceleration
 
 This program sends your micro:bit's **acceleration** (amount it is
@@ -34,15 +31,15 @@ Then it shows them on the LED screen.
 
 ```blocks
 radio.setGroup(99)
-radio.onDataReceived(() => {
-	basic.showString(radio.receiveString());
-    basic.showNumber(radio.receiveNumber());
+radio.onDataPacketReceived(({ text, receivedNumber }) => {
+	basic.showString(text);
+    basic.showNumber(receivedNumber);
 });
 ```
 
 ### See also
 
-[receive number](/reference/radio/receive-number), [on data received](/reference/radio/on-data-received)
+[on data packet received](/reference/radio/on-data-packet-received)
 
 ```package
 radio