scratch like broadcast api (#1358)

* scratch like broadcast api

* always register handler

* adding docs

* added icon

* updated block name

* adding DAL support "radio.raiseEvent"

* typo

* implemented using radiobus

* adding docs

* adding raise event block

* updated shims

* updated pxt
This commit is contained in:
Peli de Halleux
2018-10-08 09:46:23 -07:00
committed by GitHub
parent ae3d3a37f9
commit 6209f0cc63
19 changed files with 235 additions and 64 deletions

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@ -0,0 +1,6 @@
{
"radio": "Communicate data using radio packets",
"radio.onReceivedMessage": "Registers code to run for a particular message",
"radio.onReceivedMessage|param|msg": "@param handler ",
"radio.sendMessage": "Broadcasts a message over radio"
}

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{
"radio.onReceivedMessage|block": "on radio $msg received",
"radio.sendMessage|block": "radio send $msg",
"radio|block": "radio",
"{id:category}Radio": "Radio"
}

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# on Received Message
Run part of a program when the @boardname@ receives a
message over ``radio``.
```sig
radio.onReceivedMessage(0, function() {})
```
## Parameters
* **msg**: The message to listen for. See [send message](/reference/radio/send-message)
## Examples
## Example: Broadcasting heart or skull
Sends a ``heart`` message when ``A`` is pressed, ``skull`` when ``B`` is pressed. On the side, display heart or skull for the message.
```blocks
enum RadioMessage {
heart,
skull
}
input.onButtonPressed(Button.A, function () {
radio.sendMessage(RadioMessage.heart)
})
input.onButtonPressed(Button.B, function () {
radio.sendMessage(RadioMessage.skull)
})
radio.onReceivedMessage(RadioMessage.heart, function () {
basic.showIcon(IconNames.Heart)
})
radio.onReceivedMessage(RadioMessage.skull, function () {
basic.showIcon(IconNames.Skull)
})
```
## See also
[send message](/reference/radio/send-message),
```package
radio-broadcast
```

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# send Message
Broadcast a coded message to other @boardname@s connected via ``radio``.
```sig
radio.sendMessage(0);
```
## Parameters
* **msg**: a coded message.
## Example: Broadcasting heart or skull
Sends a ``heart`` message when ``A`` is pressed, ``skull`` when ``B`` is pressed. On the side, display heart or skull for the message.
```blocks
enum RadioMessage {
heart,
skull
}
input.onButtonPressed(Button.A, function () {
radio.sendMessage(RadioMessage.heart)
})
input.onButtonPressed(Button.B, function () {
radio.sendMessage(RadioMessage.skull)
})
radio.onReceivedMessage(RadioMessage.heart, function () {
basic.showIcon(IconNames.Heart)
})
radio.onReceivedMessage(RadioMessage.skull, function () {
basic.showIcon(IconNames.Skull)
})
```
## See also
[on received number](/reference/radio/on-received-number)
```package
radio-broadcast
```

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{
"name": "radio-broadcast",
"files": [
"pxt.json",
"radio-broadcast.ts"
],
"dependencies": {
"core": "file:../core",
"radio": "file:../radio"
}
}

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namespace radio {
/**
* Gets the message code
*/
//% blockHidden=1 shim=ENUM_GET
//% blockId=radioMessageCode block="$msg" enumInitialMembers="message1"
//% enumName=RadioMessage enumMemberName=msg enumPromptHint="e.g. Start, Stop, Jump..."
export function __message(msg: number): number {
return msg;
}
/**
* Broadcasts a message over radio
* @param msg
*/
//% blockId=radioBroadcastMessage block="radio send $msg"
//% msg.shadow=radioMessageCode draggableParameters
//% weight=200
//% blockGap=8
//% help=radio/send-message
export function sendMessage(msg: number): void {
// 0 is MICROBIT_EVT_ANY, shifting by 1
radio.raiseEvent(DAL.MES_BROADCAST_GENERAL_ID, msg + 1);
}
/**
* Registers code to run for a particular message
* @param msg
* @param handler
*/
//% blockId=radioOnMessageReceived block="on radio $msg received"
//% msg.shadow=radioMessageCode draggableParameters
//% weight=199
//% help=radio/on-received-message
export function onReceivedMessage(msg: number, handler: () => void) {
control.onEvent(DAL.MES_BROADCAST_GENERAL_ID, msg + 1, handler);
}
}

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@ -16,6 +16,7 @@
"radio.onReceivedNumber": "Registers code to run when the radio receives a number.",
"radio.onReceivedString": "Registers code to run when the radio receives a string.",
"radio.onReceivedValue": "Registers code to run when the radio receives a key value pair.",
"radio.raiseEvent": "Sends an event over radio to neigboring devices",
"radio.receiveNumber": "Reads the next packet from the radio queue and returns the packet's number\npayload or 0 if the packet did not contain a number.",
"radio.receiveString": "Reads the next packet from the radio queue and returns the packet's string\npayload or the empty string if the packet did not contain a string.",
"radio.receivedBuffer": "Returns the buffer payload from the last packet taken from the radio queue\n(via ``receiveNumber``, ``receiveString``, etc) or the empty string if that\npacket did not contain a string.",

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@ -10,6 +10,7 @@
"radio.onReceivedNumber|block": "on radio received",
"radio.onReceivedString|block": "on radio received",
"radio.onReceivedValue|block": "on radio received",
"radio.raiseEvent|block": "radio raise event|from source %src=control_event_source_id|with value %value=control_event_value_id",
"radio.receiveNumber|block": "radio receive number",
"radio.receiveString|block": "radio receive string",
"radio.receivedSignalStrength|block": "radio received signal strength",

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@ -59,14 +59,17 @@ namespace radio {
return r;
}
void broadcastMessage(int message) {
/**
* Sends an event over radio to neigboring devices
*/
//% blockId=radioRaiseEvent block="radio raise event|from source %src=control_event_source_id|with value %value=control_event_value_id"
//% blockExternalInputs=1
//% advanced=true
//% weight=1
//% help=radio/raise-event
void raiseEvent(int src, int value) {
if (radioEnable() != MICROBIT_OK) return;
uBit.radio.event.eventReceived(MicroBitEvent(MES_BROADCAST_GENERAL_ID, message, CREATE_ONLY));
}
void onBroadcastMessageReceived(int message, Action f) {
if (radioEnable() != MICROBIT_OK) return;
registerWithDal(MES_BROADCAST_GENERAL_ID, message, f);
uBit.radio.event.eventReceived(MicroBitEvent(src, value, CREATE_ONLY));
}
void setPacketPrefix(uint8_t* buf, int type) {

10
libs/radio/shims.d.ts vendored
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@ -5,6 +5,16 @@
//% color=#E3008C weight=96 icon="\uf012"
declare namespace radio {
/**
* Sends an event over radio to neigboring devices
*/
//% blockId=radioRaiseEvent block="radio raise event|from source %src=control_event_source_id|with value %value=control_event_value_id"
//% blockExternalInputs=1
//% advanced=true
//% weight=1
//% help=radio/raise-event shim=radio::raiseEvent
function raiseEvent(src: int32, value: int32): void;
/**
* Broadcasts a number over radio to any connected micro:bit in the group.
*/