/// <summary>
/// Task for starting the R2 and receiving meters over the COM Port.
/// </summary>
/// <returns></returns>
private async Task R2Listen()
{
//Gets any devices associated with the R2 port
var aqsFilter = SerialDevice.GetDeviceSelector(R2Device.PortName);
var devices = await DeviceInformation.FindAllAsync(aqsFilter);
if (devices.Any())
{
var deviceId = devices.First().Id;
//This redundancy ensures the device is supplies a valid datareader object
using (SerialDevice device = await SerialDevice.FromIdAsync(deviceId))
{
if (device != null)
{
var readCancellationTokenSource = new CancellationTokenSource();
//DataReader dataReaderObject = new DataReader(device.InputStream);
//Reading variables
R2PacketModel R2Model;
int lineCount = 0;
StringBuilder OutputBuilder = new StringBuilder();
bool packetStart = false, packetEnd = false;
string endpointId = "", reading = "", flag = "", rssi = "";
DateTime date = new DateTime();
TimeSpan time = new TimeSpan();
//GetLog tests
//R2I8 r = new R2I8();
//await r.ExecuteGetLog(device, "7072600", 11520);
//var resp = await R2.Listen(device, readCancellationTokenSource, R2PacketHeader.I8LogDetails, R2PacketHeader.I8LogStart, R2PacketHeader.I8LogCompleted, 30, 1);
Stream str = device.InputStream.AsStreamForRead(0);
IsR2Listening = true;
while (IsR2Initialized && IsR2Listening)
{
byte[] buffer = new byte[1];
string response = "";
while (!packetStart || !packetEnd)
{
int readCount = await str.ReadAsync(buffer, 0, 1, readCancellationTokenSource.Token);//.ConfigureAwait(false);
string temp = Encoding.UTF8.GetString(buffer);
//temp.AddRange(Regex.Split(resp, @"(?<=[$&])"));
//string temp = await R2.Listen(device, readCancellationTokenSource, dataReaderObject, 80, true);
response += temp;
if (temp == "+" || temp == "*")
{
packetStart = true;
}
else if (temp == "$" || temp == "&")
{
packetEnd = true;
}
if (!packetStart && packetEnd)
{
packetEnd = false;
}
}
//If a start and end char are found, begin parsing
if (packetStart && packetEnd)//foreach (string response in temp)
{
packetStart = false;
packetEnd = false;
R2Model = await R2ReadPacketResponseAsync.ParseR2PacketResponse(response);
if (R2Model.R2M2WPacketModel != null || R2Model.R2NRDPacketModel != null)
{
if (R2Model.R2M2WPacketModel != null)
{
//Set Database Variables
endpointId = R2Model.R2M2WPacketModel.EndpointId;
reading = R2Model.R2M2WPacketModel.Reading;
date = R2Model.R2M2WPacketModel.ReadTime.Date;
time = R2Model.R2M2WPacketModel.ReadTime.TimeOfDay;
flag = R2Model.R2M2WPacketModel.Flag;
rssi = R2Model.R2M2WPacketModel.RSSI;
}
if (R2Model.R2NRDPacketModel != null)
{
//Set Database Variables
endpointId = R2Model.R2NRDPacketModel.EndpointId;
reading = R2Model.R2NRDPacketModel.Reading;
date = R2Model.R2NRDPacketModel.ReadTime.Date;
time = R2Model.R2NRDPacketModel.ReadTime.TimeOfDay;
flag = R2Model.R2NRDPacketModel.Flag;
rssi = R2Model.R2NRDPacketModel.RSSI;
}
//Add to display list
if (lineCount > 21)
{
OutputBuilder.Remove(0, OutputBuilder.ToString().IndexOf('\n') + 1);
}
OutputBuilder.Append("ID: " + endpointId + "\n");
R2Packet = OutputBuilder.ToString();
lineCount++;
//Update Database
if (!(ReadIds.Contains(endpointId)))// && (Meters.Where(meter => meter.MeterInfo.MeterId == endpointId)).Any())
{
MeterModel receivedMeter = Meters.FirstOrDefault(meter => meter.MeterInfo.MeterId == endpointId);
if (receivedMeter != null)
{
int index = Meters.IndexOf(receivedMeter);
Meters[index].MeterInfo.Reading = reading;
Meters[index].ReadUpdated = true;
MeterSyncQueue.Enqueue(Meters[index].MeterInfo);
}
else
{
MeterSyncQueue.Enqueue(new JsonMeterModel()
{
MeterId = endpointId, Reading = reading
});
}
ReadIds.Add(endpointId);
ReadEndpoints++;
//await Task.Delay(10);
////(@ID, @Read, @Date, @Time, @Codes, @RSSI, @HiUse, @Voltage);";
//Database.UpdateReadCommand.Parameters.Add(new SqliteParameter("Id", endpointId));
//Database.UpdateReadCommand.Parameters.Add(new SqliteParameter("Read", reading));
//Database.UpdateReadCommand.Parameters.Add(new SqliteParameter("Date", date));
//Database.UpdateReadCommand.Parameters.Add(new SqliteParameter("Time", time));
//Database.UpdateReadCommand.Parameters.Add(new SqliteParameter("Codes", flag));
//Database.UpdateReadCommand.Parameters.Add(new SqliteParameter("RSSI", rssi));
////Database.UpdateReadCommand.Parameters.Add(new SqliteParameter("HiUse", hiUse));
////Database.UpdateReadCommand.Parameters.Add(new SqliteParameter("Voltage", voltage));
//Database.ExecuteCommand(Database.UpdateReadCommand);
//if (Database.DatabaseFile != null && _userFolder != null)
//{
// await Database.DatabaseFile.CopyAsync(_userFolder, _userFile.Name, NameCollisionOption.ReplaceExisting);
//}
}
}
}
}
//end thread
await PushReadsToCloud();
SyncStatus = "Syncronized";
}
}
}
}