/// <summary>
/// Parses the provided packet. If the packet cannot be parsed, this method will
/// throw an argument exception.
/// </summary>
/// <param name="packet">The packet to parse.</param>
/// <returns></returns>
public override GaugePacket ParsePacket(byte[] packet)
{
if (packet.Length < 18 || packet.Length > 20)
{
throw new Exception("Packet too short");
}
using (BinaryReader r = new BinaryReader(new MemoryStream(packet))) {
var version = (EProtocolVersion)r.ReadByte();
var battery = (int)r.ReadByte();
var readings = new List <GaugeReading>();
// According to the rigado protocol specification, the packet length should be no more than 19 bytes.
var count = 17; // 19 - version and battery
SensorPayload sp;
while (count >= (sp = new SensorPayload(r.ReadByte())).length) // While the count still has another potential packet, pull the next packet.
{
count -= sp.length;
if (sp.unitCode == 0)
{
continue;
}
sp.Parse(r);
readings.Add(new GaugeReading()
{
removed = !sp.connected,
sensorType = UnitLookup.GetSensorTypeFromCode(sp.unitCode),
reading = sp.unit.OfScalar(sp.measurement),
});
}
return(new GaugePacket(version, battery, readings.ToArray()));
}
}
public Task <SensorPayloadDecoded> DecodePayload(SensorPayload payload)
{
//TODO: implement decoding
var res = new SensorPayloadDecoded()
{
DevEUI = payload.DevEUI,
Time = payload.Time
};
string data = payload.Data;
int port = payload.FPort;
var startIndex = 0;
while (startIndex < data.Length)
{
switch (port)
{
case 40:
var tempInternal = getData(data.Substring(startIndex, 4)) / 100.0;
startIndex += 4;
res.TempInternal = tempInternal;
break;
case 41:
var red = getData(data.Substring(startIndex, 4)) / 100.0;
startIndex += 4;
res.TempRed = red;
break;
case 42:
var blue = getData(data.Substring(startIndex, 4)) / 100.0;
startIndex += 4;
res.TempBlue = blue;
break;
case 43:
var temp = getData(data.Substring(startIndex, 4)) / 100.0;
var humidity = getData(data.Substring(startIndex + 4, 2)) / 2.0;
startIndex += 6;
res.TempHumidity = temp;
res.Humidity = humidity;
break;
default:
break;
}
if (startIndex < data.Length)
{
port = getData(data.Substring(startIndex, 2));
startIndex += 2;
}
}
return(Task.FromResult(res));
}
public Task <SensorPayloadDecoded> DecodePayload(SensorPayload payload)
{
//TODO: implement decoding
var res = new SensorPayloadDecoded()
{
DevEUI = payload.DevEUI,
Time = payload.Time
};
return(Task.FromResult(res));
}
public async Task DecodePayload2(int port, string data)
{
var obj = new SensorPayload()
{
DevEUI = "Test",
Time = DateTime.UtcNow,
FPort = port,
Data = data,
};
var res = await new SensorService().DecodePayload(obj);
Assert.Equal(obj.DevEUI, res.DevEUI);
Assert.Equal(obj.Time, res.Time);
Assert.Equal(22.9, res.TempHumidity);
Assert.Equal(25, res.Humidity);
}
public async Task DecodePayload1(int port, string data)
{
var obj = new SensorPayload()
{
DevEUI = "Test",
Time = DateTime.UtcNow,
FPort = port,
Data = data,
};
var res = await new SensorService().DecodePayload(obj);
Assert.Equal(obj.DevEUI, res.DevEUI);
Assert.Equal(obj.Time, res.Time);
Assert.Equal(13.75, res.TempRed);
Assert.Equal(15.31, res.TempBlue);
Assert.Equal(15.04, res.TempInternal);
}
static async void SendDeviceToCloudMessagesAsync(DeviceClient deviceClient)
{
var package = $"{{LightLevel: {lightLevel}, Temp: {temp:N3}, Analog: {analog:N2}, X: {x}, Y: {y}, Z: {z} }}";
var sensorPayload = new SensorPayload
{
LightLevel = lightLevel,
Temp = temp,
Analog = analog,
X = x,
Y = y,
Z = z
};
var jsonPackage = JsonConvert.SerializeObject(sensorPayload);
var message = new Message(Encoding.ASCII.GetBytes(jsonPackage));
if(deviceClient != null)
await deviceClient.SendEventAsync(message);
}
