public override SensorRead Read()
{
var read = new SensorRead();
try
{
#if DEBUG
var deviceDir = new DirectoryInfo(AppDomain.CurrentDomain.BaseDirectory);
var w1file = deviceDir.GetFiles("test.txt").FirstOrDefault();
#else
var deviceDir = new DirectoryInfo("/sys/bus/w1/devices/" + _iddevice);
if (deviceDir == null) return read;
var w1file = deviceDir.GetFiles("w1_slave").FirstOrDefault();
if (w1file == null) return read;
#endif
string text = string.Empty;
var process = new Process();
process.StartInfo = new ProcessStartInfo("cat", w1file.FullName);
process.StartInfo.RedirectStandardInput = false;
process.StartInfo.RedirectStandardError = true;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.UseShellExecute = false;
process.StartInfo.CreateNoWindow = true;
process.Start();
text = process.StandardOutput.ReadToEnd();
process.WaitForExit(2000);
/*
// for reading the file
Log.Debug("read from file to end");
using (StreamReader sr = new StreamReader(w1file.FullName))
{
text = sr.ReadToEnd();
}
*/
var temptext = text.Substring(text.IndexOf("t=") + 2);
float value = float.Parse(temptext) / 1000;
read = new SensorRead { Time = _scheduler.TimeIndex, Name = Name, Value = value };
if (OnSensorRead != null)
OnSensorRead(this, new SensorEventArgs(read));
}
catch (Exception ex)
{
Log.Error(string.Format("Ds18b20Sensor read eror"), ex);
}
return read;
}
/// <summary>
/// Sensor read handler
/// </summary>
public override SensorRead Read()
{
var rnd = new Random((int)_scheduler.TimeIndex);
var value = ((float)rnd.NextDouble() * (MaxRange - MinRange)) + MinRange;
var read = new SensorRead { Time = _scheduler.TimeIndex, Name = Name, Value = value };
Log.Debug(string.Format("sensor read {0}", read));
if (OnSensorRead != null)
OnSensorRead(this, new SensorEventArgs(read));
return read;
}
public SensorEventArgs(SensorRead read)
{
Read = read;
}
/// <summary>
/// Sensor read function
/// </summary>
/// <returns>Measured value</returns>
public virtual SensorRead Read()
{
var read = new SensorRead();
if (OnSensorRead != null)
OnSensorRead(this, new SensorEventArgs(read));
return read;
}
/// <summary>
/// Process HBus ack messages
/// </summary>
/// <param name="sender"></param>
/// <param name="ack"></param>
/// <param name="port"></param>
/// <returns></returns>
private bool OnAckReceived(object sender, Message ack, int port)
{
try
{
Event evt = null;
//if (Status.NodeStatus != NodeStatusValues.Active) return false;
if (ack.MessageType == MessageTypes.NackResponse)
{
var err = ack.Data.Length > 1 ? ack.Data[0] << 1 | ack.Data[1] : 0;
Log.Debug(string.Format("HBus: nack from {0}:{1} with error {2}", ack.Source, port, err));
return false;
}
Log.Debug(string.Format("HBus: ack from {0}:{1}", ack.Source, port));
switch (ack.Command)
{
//case NodeCommands.CMD_GET_PIN_INFO:
// var pp = new Pin();
// var pi = PinSerializer.DeSerialize(ack.Data, ref pp);
// break;
case NodeCommands.CMD_READ_PIN:
var pe = new PinEvent(ack.Data);
evt = new Event
{
Name = "pin-read",
Source = pe.Pin,
Channel = "hbus",
Value = pe.Value,
Status = pe.IsActive ? "active" : "inactive",
Timestamp = DateTime.Now
};
break;
case NodeCommands.CMD_GET_DEVICE_STATUS:
var ds = new DeviceStatus(ack.Data);
evt = new Event
{
Name = "device-status",
Source = ds.Device,
Channel = "hbus",
Status = ds.Status,
Timestamp = DateTime.Now
};
break;
//case NodeCommands.CMD_GET_DEVICE_INFO:
// var dd = new Device();
// var di = DeviceSerializer.DeSerialize(ack.Data, ref dd);
// break;
//case NodeCommands.CMD_GET_SENSOR_INFO:
// break;
case NodeCommands.CMD_READ_SENSOR:
var sr = new SensorRead(ack.Data);
evt = new Event
{
Name = "sensor-read",
Source = sr.Name,
Channel = "hbus",
Value = sr.Value,
Unit = "", //sr.Unit, //TODO: add to HBus protocol
Timestamp = DateTime.Now
};
break;
}
if (evt != null)
//Send event to subscribers
Send(evt, this);
return true;
}
catch (Exception ex)
{
Log.Error(string.Format("HBus: error occurred with ack {0} from {1}", ack.Command, ack.Source), ex);
//Propagate errors to observers
Error(ex, this);
}
return false;
}
/// <summary>
/// Process HBus command messages
/// </summary>
/// <param name="sender"></param>
/// <param name="message"></param>
/// <param name="port"></param>
/// <returns></returns>
private bool OnCommandReceived(object sender, Message message, int port)
{
Log.Debug(string.Format("HBus command from {0}:{1}", message.Source, port));
try
{
Event evt = null;
//Clear bus & node errors
_bus.ClearErrors();
switch (message.Command)
{
case NodeCommands.CMD_PUSH_PIN_EVENT:
var pe = new PinEvent(message.Data);
evt = new Event
{
Name = "pin-change",
Source = pe.Pin,
//Channel = "hbus",
Value = pe.Value,
Status = pe.IsActive ? "active" : "inactive",
Timestamp = DateTime.Now
};
break;
case NodeCommands.CMD_PUSH_DEVICE_EVENT:
var de = new DeviceEvent(message.Data);
evt = new Event
{
Name = "device-event",
Source = de.Device,
//Channel = "hbus",
Status = de.Status,
Data = de.Values,
Timestamp = DateTime.Now
};
break;
case NodeCommands.CMD_PUSH_SENSOR_READ:
var sr = new SensorRead(message.Data);
evt = new Event
{
Name = "sensor-read",
Source = sr.Name,
//Channel = "hbus",
Value = sr.Value,
Unit = "", //sr.Unit, //TODO: add to HBus protocol
Timestamp = DateTime.Now
};
break;
}
if (evt != null)
//Send event to subscribers
Send(evt, this);
//HBus command processed
return true;
}
catch (Exception ex)
{
Log.Error(string.Format("HBus: error with command {0} from {1}", message.Command, message.Source), ex);
//Propagate errors to observers
Error(ex, this);
}
return false;
}