/// <summary>
/// Sends the Wake Up message to all the selected sensors
/// and expects to receive the DoneWakeUp message in return
/// as acknowledgement
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnWakeUp_Click(object sender, EventArgs e)
{
int count = listKnownSensors.SelectedItems.Count;
if (count == 0)
{
MessageBox.Show("No sensor selected" + "\n" + Util.GetMethodNameAndLineNum(),
"SENSIT Server",
MessageBoxButtons.OK,
MessageBoxIcon.Asterisk);
}
else
{
ServerMsg msg = new ServerMsg();
for (int i = 0; i < count; i++)
{
msg.RecipientId = (string)this.listKnownSensors.SelectedItems[i];
msg.Tag = ServerMsg.CommandTag.WakeUp;
msg.Length = 0;
msg.Value = null;
WritePacket(msg);
}
}
}
/// <summary>
/// Sends the Set Ping Interval message to all the selected sensors
/// and expects to receive the DoneSetPingInterval message in return
/// as acknowledgement
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnSetPingInterval_Click(object sender, EventArgs e)
{
int count = listKnownSensors.SelectedItems.Count;
if (count == 0)
{
MessageBox.Show("No sensor selected\n" + "\n" + Util.GetMethodNameAndLineNum(),
"SENSIT Server",
MessageBoxButtons.OK,
MessageBoxIcon.Asterisk);
}
else
{
ServerMsg msg = new ServerMsg();
decimal hh = numericHH.Value;
decimal mm = numericMM.Value;
decimal ss = numericSS.Value;
float pingInterval = (float)((hh * 60 * 60) + (mm * 60) + ss);
for (int i = 0; i < count; ++i)
{
msg.RecipientId = (string)this.listKnownSensors.SelectedItems[i];
msg.Tag = ServerMsg.CommandTag.SetPingInterval;
msg.Length = 4;
msg.Value = Util.FloatToByteArr(pingInterval);
WritePacket(msg);
}
}
}
private void btnRefreshSensorState_Click(object sender, EventArgs e)
{
ServerMsg msg = new ServerMsg();
msg.RecipientId = (string)this.listKnownSensors.SelectedItem;
msg.Tag = ServerMsg.CommandTag.GetState;
msg.Length = 0;
msg.Value = null;
WritePacket(msg);
}
/// <summary>
/// It processes any message received from any
/// sensor. This function must be called by the derived classes
/// of this class upon receiving a complete message packet from
/// a sensor
/// </summary>
/// <param name="sensorMsg">Message packet from sensor</param>
private void ProcessMessage(SensorMsg sensorMsg)
{
LoggerEnterMethod();
ServerMsg nextServerMsg;
string Id = sensorMsg.SenderId;
switch (sensorMsg.Tag)
{
case SensorMsg.CommandTag.Log:
{
float reading = Util.ByteArrToFloat(sensorMsg.Value) * Conf.SENSOR_READING_TO_RAINFALL_FACTOR;
LoggerInfo("RECEIVED Rainfall measurement = " + reading + " from Sensor " + Id + " at " + sensorMsg.Date + ", " + sensorMsg.Time);
/* Check if the sensor is already known or not.
* If not, add it to the list of known sensors and
* ask for its description
*/
if (KnownSensors.ContainsKey(Id) == false)
{
KnownSensors.Add(Id, new Sensor(Id));
AddToListKnownSensors(Id);
LoggerInfo("ADDED Sensor " + Id);
nextServerMsg = new ServerMsg();
nextServerMsg.RecipientId = Id;
nextServerMsg.Tag = ServerMsg.CommandTag.SendDescription;
nextServerMsg.Length = 0;
nextServerMsg.Value = null;
WritePacket(nextServerMsg);
}
// Save the last reading of the sensor
KnownSensors[Id].LastReading = reading;
KnownSensors[Id].LastReadingTime = sensorMsg.Date + " " + sensorMsg.Time;
SaveSensorInfo(Id);
// Logging the reading in the appropriate log file
string path = frmOptions.RainfallLogDirPath + "/" + Id + "/" + Id + "_" + KnownSensors[Id].LastReadingTime.Split(new char[] { ' ' })[0].Replace('/', '-') + ".csv";
string dir = Path.GetDirectoryName(path);
if (Directory.Exists(dir) == false)
Directory.CreateDirectory(dir);
LoggerLog(path,
KnownSensors[Id].LastReadingTime.Split(new char[] { ' ' })[1],
String.Format("{0:" + Logging.SENSOR_LOG_READING_FORMAT + "}", KnownSensors[Id].LastReading));
break;
}
case SensorMsg.CommandTag.Description:
{
string desc = Util.ByteArrToString(sensorMsg.Value);
LoggerInfo("RECEIVED Description = " + desc + " from Sensor " + Id);
KnownSensors[Id].Description = desc;
SaveSensorInfo(Id);
break;
}
case SensorMsg.CommandTag.Resend:
{
LoggerInfo("RECEIVED Resend from Sensor " + Id);
WritePacket(prevServerMsg[Id]);
break;
}
case SensorMsg.CommandTag.DebugMsg:
{
string dm = Util.ByteArrToString(sensorMsg.Value);
LoggerInfo("RECEIVED Debug Message = " + dm + " from Sensor " + Id);
break;
}
case SensorMsg.CommandTag.PingInterval:
{
float pingInterval = Util.ByteArrToFloat(sensorMsg.Value);
LoggerInfo("RECEIVED PingInterval = " + pingInterval.ToString() + " s from Sensor " + Id);
KnownSensors[Id].PingInterval = pingInterval;
SaveSensorInfo(Id);
break;
}
case SensorMsg.CommandTag.State:
{
string state = Util.ByteArrToString(sensorMsg.Value);
LoggerInfo("RECEIVED State = " + state + " from Sensor " + Id);
KnownSensors[Id].State = (Sensor.StateEnum)Enum.Parse(typeof(Sensor.StateEnum), state);
SaveSensorInfo(Id);
break;
}
default:
{
LoggerError("Unhandled case " + sensorMsg.Tag.ToString());
#if DEBUG
MessageBox.Show("Unhandled case " + sensorMsg.Tag.ToString() + "\n" + Util.GetMethodNameAndLineNum(),
"SENSIT Server",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
#endif
break;
}
}
RefreshGuiSensorInfo();
// Remembering the previous message received from each sensor
KnownSensors[Id].LastMsgSent = sensorMsg;
LoggerLeaveMethod();
}
/// <summary>
/// This function processes any message received from any
/// sensor. This function must be called by the derived classes
/// of this class upon receiving a complete message packet from
/// a sensor
/// </summary>
/// <param name="serverMsg">Message packet from sensor</param>
private void ProcessMessage(ServerMsg serverMsg)
{
SensorMsg nextSensorMsg = new SensorMsg();
nextSensorMsg.SenderId = sensor.Id;
AddToTxtRX("--------------------\r\n");
switch (serverMsg.Tag)
{
case ServerMsg.CommandTag.SendDescription:
AddToTxtRX("SendDescription\r\n");
nextSensorMsg.Tag = SensorMsg.CommandTag.Description;
nextSensorMsg.Length = (byte)sensor.Desc.Length;
nextSensorMsg.Value = (new UTF8Encoding()).GetBytes(sensor.Desc);
WritePacket(nextSensorMsg);
break;
case ServerMsg.CommandTag.DebugMsg:
AddToTxtRX("DebugMsg\r\n");
AddToTxtRX(Util.ByteArrToString(serverMsg.Value) + "\r\n");
break;
case ServerMsg.CommandTag.Resend:
AddToTxtRX("Resend\r\n");
WritePacket(prevSensorMsg);
break;
case ServerMsg.CommandTag.ResetReading:
AddToTxtRX("ResetReading\r\n");
nextSensorMsg.Tag = SensorMsg.CommandTag.DoneResetReading;
nextSensorMsg.Length = 0;
nextSensorMsg.Value = null;
WritePacket(nextSensorMsg);
break;
case ServerMsg.CommandTag.SetPingInterval:
AddToTxtRX("SetPingTimePeriod\r\n");
float new_t = Util.ByteArrToFloat(serverMsg.Value);
AddToTxtRX(new_t.ToString()+"\r\n");
nextSensorMsg.Tag = SensorMsg.CommandTag.DoneSetPingInterval;
nextSensorMsg.Length = 4;
nextSensorMsg.Value = Util.FloatToByteArr(new_t);
WritePacket(nextSensorMsg);
break;
case ServerMsg.CommandTag.SetServerAddress:
AddToTxtRX("SetServerAddress\r\n");
string new_add = Util.ByteArrToString(serverMsg.Value);
AddToTxtRX(new_add + "\r\n");
break;
case ServerMsg.CommandTag.Sleep:
AddToTxtRX("Sleep\r\n");
nextSensorMsg.Tag = SensorMsg.CommandTag.DoneSleep;
nextSensorMsg.Length = 0;
nextSensorMsg.Value = null;
WritePacket(nextSensorMsg);
break;
case ServerMsg.CommandTag.WakeUp:
AddToTxtRX("WakeUp\r\n");
nextSensorMsg.Tag = SensorMsg.CommandTag.DoneWakeUp;
nextSensorMsg.Length = 0;
nextSensorMsg.Value = null;
WritePacket(nextSensorMsg);
break;
case ServerMsg.CommandTag.Calibrate:
AddToTxtRX("Calibrate\r\n");
calibParam.CalibDone = false;
calibParam.NumSamples = 0;
nextSensorMsg.Tag = SensorMsg.CommandTag.StartCalibration;
nextSensorMsg.Length = 0;
nextSensorMsg.Value = null;
WritePacket(nextSensorMsg);
break;
case ServerMsg.CommandTag.MinHeight:
AddToTxtRX("Min Height = " + Util.ByteArrToFloat(serverMsg.Value).ToString() + "\r\n");
calibParam.MinHeight = Util.ByteArrToFloat(serverMsg.Value);
nextSensorMsg.Tag = SensorMsg.CommandTag.DoneMinHeight;
nextSensorMsg.Length = 4;
nextSensorMsg.Value = serverMsg.Value;
WritePacket(nextSensorMsg);
break;
case ServerMsg.CommandTag.MaxHeight:
AddToTxtRX("Max Height = " + Util.ByteArrToFloat(serverMsg.Value).ToString() + "\r\n");
calibParam.MaxHeight = Util.ByteArrToFloat(serverMsg.Value);
nextSensorMsg.Tag = SensorMsg.CommandTag.DoneMaxHeight;
nextSensorMsg.Length = 4;
nextSensorMsg.Value = serverMsg.Value;
WritePacket(nextSensorMsg);
break;
case ServerMsg.CommandTag.Height:
AddToTxtRX("Height = " + Util.ByteArrToFloat(serverMsg.Value).ToString() + "\r\n");
ProcessCalibSample(Util.ByteArrToFloat(serverMsg.Value));
nextSensorMsg.Tag = SensorMsg.CommandTag.DoneHeight;
nextSensorMsg.Length = 4;
nextSensorMsg.Value = serverMsg.Value;
WritePacket(nextSensorMsg);
break;
case ServerMsg.CommandTag.CalibrationDone:
AddToTxtRX("Calibration Done\r\n");
CalibrateSensor(); // Calibrating the sensor with the collected data
nextSensorMsg.Tag = SensorMsg.CommandTag.DoneCalibration;
nextSensorMsg.Length = 0;
nextSensorMsg.Value = null;
WritePacket(nextSensorMsg);
break;
default:
MessageBox.Show("Unhandled case " + serverMsg.Tag.ToString(),
"Sensor Emulator",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
break;
}
}
/// <summary>
/// Sends a message to a sensor
/// Format:
/// 1 Byte: CommandTag of the message (Payload)
/// 1 Byte: Length of the message
/// Length Bytes: Message
/// </summary>
/// <param name="msg">It holds the message to be sent</param>
/// <returns>
/// Result.Success if writing is successful
/// otherwise Result.Failure
/// </returns>
private Result WritePacket(ServerMsg msg)
{
LoggerEnterMethod();
try
{
byte[] byteArr = new byte[1 + 1 + msg.Length];
int idx = 0;
byteArr[idx++] = (byte)msg.Tag; // CommandTag
byteArr[idx++] = (byte)(msg.Length * 2); // Length
for (int i = 0; i < msg.Length; ++i)
byteArr[idx++] = msg.Value[i]; // Payload
string hexStr = Util.ByteArrToHex(byteArr);
LoggerInfo("Want to send " + hexStr);
#region GSM SMS sending
try
{
lock (SPortLock)
{
SerialPortWrite("AT+CMGS=\"" + msg.RecipientId + "\"\r");
SerialPortReadTo("> ");
SerialPortWrite(hexStr);
SerialPortWrite(new byte[] { 26 }, 0, 1);
// Waiting for "OK" from SIM
SerialPortReadTo("OK\r");
}
}
catch (TimeoutException exc)
{
LoggerError("Could not send SMS : " + exc.Message);
#if DEBUG
MessageBox.Show("GSM module not responding" + "\n" + exc.Message + "\n" + Util.GetMethodNameAndLineNum(),
"SENSIT Server",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
#endif
LoggerLeaveMethod();
return Result.Failure;
}
#endregion
prevServerMsg[msg.RecipientId] = msg;
#region Adding activity message to log files
string activityMsg = string.Empty;
switch (msg.Tag)
{
case ServerMsg.CommandTag.DebugMsg:
{
activityMsg = msg.Tag.ToString() + " = " + Util.ByteArrToString(msg.Value);
break;
}
case ServerMsg.CommandTag.Resend:
{
activityMsg = msg.Tag.ToString();
break;
}
case ServerMsg.CommandTag.ResetReading:
{
activityMsg = msg.Tag.ToString();
break;
}
case ServerMsg.CommandTag.SendDescription:
{
activityMsg = msg.Tag.ToString();
break;
}
case ServerMsg.CommandTag.SetPingInterval:
{
activityMsg = msg.Tag.ToString() + " = " + Util.ByteArrToFloat(msg.Value).ToString() + " s";
break;
}
case ServerMsg.CommandTag.Sleep:
{
activityMsg = msg.Tag.ToString();
break;
}
case ServerMsg.CommandTag.WakeUp:
{
activityMsg = msg.Tag.ToString();
break;
}
case ServerMsg.CommandTag.GetPingInterval:
{
activityMsg = msg.Tag.ToString();
break;
}
case ServerMsg.CommandTag.GetState:
{
activityMsg = msg.Tag.ToString();
break;
}
default:
{
LoggerError("Unhandled case " + msg.Tag.ToString());
#if DEBUG
MessageBox.Show("Unhandled case " + msg.Tag.ToString() + "\n" + Util.GetMethodNameAndLineNum(),
"SENSIT Server",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
#endif
break;
}
}
LoggerInfo("SENT " + activityMsg + " to Sensor " + msg.RecipientId);
#endregion
}
catch (Exception exc)
{
LoggerError("Something went wrong : " + exc.Message);
#if DEBUG
MessageBox.Show("Exception: " + exc.Message + "\n" + Util.GetMethodNameAndLineNum(),
"SENSIT Server",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
#endif
SetStripMessageText(string.Empty);
SetStripGSMForeColor(Color.Red);
LoggerLeaveMethod();
return Result.Failure;
}
LoggerLeaveMethod();
return Result.Success;
}