private void AssertPortOpenness()
{
if (!port.IsOpen)
{
try
{
port.Open();
logger.info(
"Opened SerialMeterConnection with parameters {0}{1}{2}@{3}",
DataBits,
StopBits,
Handshake,
BaudRate);
}
catch (System.IO.IOException exception)
{
throw new MeterException("Permission denied. Check permissions for " + PortName +
", fix with 'usermod -a -G dialout <USER_NAME>'");
}
System.Threading.Thread.Sleep(100);
if (!port.IsOpen)
{
throw new MeterException("Failed opening port " + PortName);
}
}
}
public Dictionary <string, string> Fetch1()
{
byte[] responseComplete = SendCommand(FETCH1);
byte[] responseBody = responseComplete.Subset(MAGICBYTE_LENGTH,
responseComplete.Length - MAGICBYTE_LENGTH - CHECKSUM_LENGTH);
byte responseChecksum = FromKamstrupPair(responseComplete.Subset(
responseComplete.Length - CHECKSUM_LENGTH, CHECKSUM_LENGTH)
);
byte calculatedChecksum = Checksum(FromKamstrupBytes(responseBody));
if (calculatedChecksum == responseChecksum)
{
logger.info("Checksum validated: " + calculatedChecksum);
}
else
{
throw new MeterException("Invalid checksum. Calculated value of " + calculatedChecksum + " does not match response checksum value of " + responseChecksum);
}
Dictionary <string, string> result = new Dictionary <string, string>();
result.Add("METER_TYPE", Encoding.ASCII.GetString(FromKamstrupBytes(responseBody.Subset(4, 20))));
result.Add(
"METER_ID", (
UInt32.Parse(
Encoding.ASCII.GetString(
responseBody.Subset(62, 8).ReverseInPairs()
), NumberStyles.HexNumber
)
).ToString()
);
result.Add(
"CUSTOMER_NO", (
UInt32.Parse(
Encoding.ASCII.GetString(
responseBody.Subset(70, 8).ReverseInPairs()
), NumberStyles.HexNumber
)
).ToString()
);
// EXPERIMENTAL
result.Add("TEST1", UInt32.Parse(Encoding.ASCII.GetString(responseBody.Subset(24, 10).ReverseInPairs()), NumberStyles.HexNumber).ToString());
result.Add("TEST2", UInt32.Parse(Encoding.ASCII.GetString(responseBody.Subset(34, 6).ReverseInPairs()), NumberStyles.HexNumber).ToString());
result.Add("TEST3", UInt32.Parse(Encoding.ASCII.GetString(responseBody.Subset(40, 4).ReverseInPairs()), NumberStyles.HexNumber).ToString());
return(result);
}
/// <summary>
/// Initializes a new instance of the <see cref="com.bangbits.metering.MeterProtocolKMP382"/> class.
/// A Meter needs to have a MeterDriver passed to it, which is responsible for the physical connection.
/// </summary>
/// <param name='device'>
/// Driver.
/// </param>
public MeterProtocolKMP382(IMeterConnection device, ILoggingBridge logger)
{
this.device = device;
this.logger = logger;
logger.info("Instantiated MeterProtocolKMP382");
}