pxt-calliope/sim/state/radio.ts

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namespace pxsim {
export interface PacketBuffer {
payload: SimulatorRadioPacketPayload;
rssi: number;
serial: number;
time: number;
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}
export class RadioDatagram {
datagram: PacketBuffer[] = [];
lastReceived: PacketBuffer = RadioDatagram.defaultPacket();
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constructor(private runtime: Runtime) {
}
queue(packet: PacketBuffer) {
if (this.datagram.length < 4) {
this.datagram.push(packet);
}
(<DalBoard>runtime.board).bus.queue(DAL.MICROBIT_ID_RADIO, DAL.MICROBIT_RADIO_EVT_DATAGRAM);
}
send(payload: SimulatorRadioPacketPayload) {
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Runtime.postMessage(<SimulatorRadioPacketMessage>{
type: "radiopacket",
rssi: 0, // Not yet supported
serial: board().radioState.bus.transmitSerialNumber ? board().radioState.bus.serial : 0,
time: 0, // Not yet supported
payload
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})
}
recv(): PacketBuffer {
let r = this.datagram.shift();
if (!r) r = RadioDatagram.defaultPacket();
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return this.lastReceived = r;
}
private static defaultPacket(): PacketBuffer {
return {
rssi: -1,
serial: 0,
time: 0,
payload: { type: -1 }
};
}
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}
export class RadioBus {
// uint8_t radioDefaultGroup = MICROBIT_RADIO_DEFAULT_GROUP;
groupId = 0; // todo
power = 0;
serial = 0;
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transmitSerialNumber = false;
datagram: RadioDatagram;
constructor(private runtime: Runtime) {
this.datagram = new RadioDatagram(runtime);
this.serial = Math.floor(Math.random() * Math.pow(2, 32)) - Math.pow(2, 31); // 32 bit signed integer
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}
setGroup(id: number) {
this.groupId = id & 0xff; // byte only
}
setTransmitPower(power: number) {
this.power = Math.max(0, Math.min(7, power));
}
setTransmitSerialNumber(sn: boolean) {
this.transmitSerialNumber = !!sn;
}
broadcast(msg: number) {
Runtime.postMessage(<SimulatorEventBusMessage>{
type: "eventbus",
id: DAL.MES_BROADCAST_GENERAL_ID,
eventid: msg,
power: this.power,
group: this.groupId
})
}
}
export class RadioState {
bus: RadioBus;
constructor(runtime: Runtime) {
this.bus = new RadioBus(runtime);
}
public recievePacket(packet: SimulatorRadioPacketMessage) {
this.bus.datagram.queue(packet)
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}
}
}
namespace pxsim.radio {
enum PacketPayloadType {
NUMBER = 0,
VALUE = 1,
STRING = 2
}
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export function broadcastMessage(msg: number): void {
board().radioState.bus.broadcast(msg);
}
export function onBroadcastMessageReceived(msg: number, handler: RefAction): void {
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pxtcore.registerWithDal(DAL.MES_BROADCAST_GENERAL_ID, msg, handler);
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}
export function setGroup(id: number): void {
board().radioState.bus.setGroup(id);
}
export function setTransmitPower(power: number): void {
board().radioState.bus.setTransmitPower(power);
}
export function setTransmitSerialNumber(transmit: boolean): void {
board().radioState.bus.setTransmitSerialNumber(transmit);
}
export function sendNumber(value: number): void {
board().radioState.bus.datagram.send({
type: PacketPayloadType.NUMBER,
numberData: value
});
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}
export function sendString(msg: string): void {
msg = msg.substr(0, 19);
board().radioState.bus.datagram.send({
type: PacketPayloadType.STRING,
stringData: msg
});
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}
export function writeValueToSerial(): void {
let b = board();
let p = b.radioState.bus.datagram.recv();
switch(p.payload.type) {
case PacketPayloadType.NUMBER:
b.writeSerial(`{"t":${p.time},"s":${p.serial},"v":${p.payload.numberData}}`)
break;
case PacketPayloadType.VALUE:
b.writeSerial(`{"t":${p.time},"s":${p.serial},"n":"${p.payload.stringData}","v":${p.payload.numberData}}`)
break;
case PacketPayloadType.STRING:
b.writeSerial(`{"t":${p.time},"s":${p.serial},"n":"${p.payload.stringData}"}`)
break;
default:
}
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}
export function sendValue(name: string, value: number) {
name = name.substr(0, 12);
const msg: number[] = [];
msg.push()
board().radioState.bus.datagram.send({
type: PacketPayloadType.VALUE,
stringData: name,
numberData: value
});
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}
export function receiveNumber(): number {
const packet = board().radioState.bus.datagram.recv();
return receivedNumber();
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}
export function receiveString(): string {
const packet = board().radioState.bus.datagram.recv();
return receivedString();
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}
export function receivedSignalStrength(): number {
return board().radioState.bus.datagram.lastReceived.rssi;
}
export function onDataReceived(handler: RefAction): void {
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pxtcore.registerWithDal(DAL.MICROBIT_ID_RADIO, DAL.MICROBIT_RADIO_EVT_DATAGRAM, handler);
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radio.receiveNumber();
}
export function receivedNumber(): number {
return board().radioState.bus.datagram.lastReceived.payload.numberData || 0;
}
export function receivedSerial(): number {
return board().radioState.bus.datagram.lastReceived.serial;
}
export function receivedString(): string {
return board().radioState.bus.datagram.lastReceived.payload.stringData || "";
}
export function receivedTime(): number {
return board().radioState.bus.datagram.lastReceived.time;
}
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}