public string HandleMeterValues(OCPPMessage msgIn, OCPPMessage msgOut)
{
string errorCode = null;
MeterValuesResponse meterValuesResponse = new MeterValuesResponse();
int? connectorId = null;
string msgMeterValue = string.Empty;
try
{
Logger.LogTrace("Processing meter values...");
MeterValuesRequest meterValueRequest = JsonConvert.DeserializeObject <MeterValuesRequest>(msgIn.JsonPayload);
Logger.LogTrace("MeterValues => Message deserialized");
connectorId = meterValueRequest.ConnectorId;
if (ChargePointStatus != null)
{
// Known charge station => process meter values
double currentChargeKW = -1;
double meterKWH = -1;
double stateOfCharge = -1;
foreach (MeterValue meterValue in meterValueRequest.MeterValue)
{
foreach (SampledValue sampleValue in meterValue.SampledValue)
{
Logger.LogTrace("MeterValues => Context={0} / Format={1} / Value={2} / Unit={3} / Location={4} / Measurand={5} / Phase={6}",
sampleValue.Context, sampleValue.Format, sampleValue.Value, sampleValue.Unit, sampleValue.Location, sampleValue.Measurand, sampleValue.Phase);
if (sampleValue.Measurand == SampledValueMeasurand.Power_Active_Import)
{
// current charging power
if (double.TryParse(sampleValue.Value, NumberStyles.Float, CultureInfo.InvariantCulture, out currentChargeKW))
{
if (sampleValue.Unit == SampledValueUnit.W ||
sampleValue.Unit == SampledValueUnit.VA ||
sampleValue.Unit == SampledValueUnit.Var ||
sampleValue.Unit == null)
{
Logger.LogTrace("MeterValues => Charging '{0:0.0}' W", currentChargeKW);
// convert W => kW
currentChargeKW = currentChargeKW / 1000;
}
else if (sampleValue.Unit == SampledValueUnit.KW ||
sampleValue.Unit == SampledValueUnit.KVA ||
sampleValue.Unit == SampledValueUnit.Kvar)
{
// already kW => OK
Logger.LogTrace("MeterValues => Charging '{0:0.0}' kW", currentChargeKW);
}
else
{
Logger.LogWarning("MeterValues => Charging: unexpected unit: '{0}' (Value={1})", sampleValue.Unit, sampleValue.Value);
}
}
else
{
Logger.LogError("MeterValues => Charging: invalid value '{0}' (Unit={1})", sampleValue.Value, sampleValue.Unit);
}
}
else if (sampleValue.Measurand == SampledValueMeasurand.Energy_Active_Import_Register ||
sampleValue.Measurand == null)
{
// charged amount of energy
if (double.TryParse(sampleValue.Value, NumberStyles.Float, CultureInfo.InvariantCulture, out meterKWH))
{
if (sampleValue.Unit == SampledValueUnit.Wh ||
sampleValue.Unit == SampledValueUnit.Varh ||
sampleValue.Unit == null)
{
Logger.LogTrace("MeterValues => Value: '{0:0.0}' Wh", meterKWH);
// convert Wh => kWh
meterKWH = meterKWH / 1000;
}
else if (sampleValue.Unit == SampledValueUnit.KWh ||
sampleValue.Unit == SampledValueUnit.Kvarh)
{
// already kWh => OK
Logger.LogTrace("MeterValues => Value: '{0:0.0}' kWh", meterKWH);
}
else
{
Logger.LogWarning("MeterValues => Value: unexpected unit: '{0}' (Value={1})", sampleValue.Unit, sampleValue.Value);
}
}
else
{
Logger.LogError("MeterValues => Value: invalid value '{0}' (Unit={1})", sampleValue.Value, sampleValue.Unit);
}
}
else if (sampleValue.Measurand == SampledValueMeasurand.SoC)
{
// state of charge (battery status)
if (double.TryParse(sampleValue.Value, NumberStyles.Float, CultureInfo.InvariantCulture, out stateOfCharge))
{
Logger.LogTrace("MeterValues => SoC: '{0:0.0}'%", stateOfCharge);
}
else
{
Logger.LogError("MeterValues => invalid value '{0}' (SoC)", sampleValue.Value);
}
}
}
}
// write charging/meter data in chargepoint status
ChargingData chargingData = null;
if (currentChargeKW >= 0 || meterKWH >= 0 || stateOfCharge >= 0)
{
chargingData = new ChargingData();
if (currentChargeKW >= 0)
{
chargingData.ChargeRateKW = currentChargeKW;
}
if (meterKWH >= 0)
{
chargingData.MeterKWH = meterKWH;
}
if (stateOfCharge >= 0)
{
chargingData.SoC = stateOfCharge;
}
if (currentChargeKW >= 0)
{
chargingData.ChargeRateKW = currentChargeKW;
}
msgMeterValue = $"Meter (kWh): {meterKWH} | Charge (kW): {currentChargeKW} | SoC (%): {stateOfCharge}";
}
if (connectorId > 1)
{
// second connector (or higher!?)
ChargePointStatus.ChargingDataEVSE2 = chargingData;
}
else
{
// first connector
ChargePointStatus.ChargingDataEVSE1 = chargingData;
}
}
else
{
// Unknown charge station
errorCode = ErrorCodes.GenericError;
}
msgOut.JsonPayload = JsonConvert.SerializeObject(meterValuesResponse);
Logger.LogTrace("MeterValues => Response serialized");
}
catch (Exception exp)
{
Logger.LogError(exp, "MeterValues => Exception: {0}", exp.Message);
errorCode = ErrorCodes.InternalError;
}
WriteMessageLog(ChargePointStatus.Id, connectorId, msgIn.Action, msgMeterValue, errorCode);
return(errorCode);
}
public string HandleMeterValues(OCPPMessage msgIn, OCPPMessage msgOut)
{
string errorCode = null;
MeterValuesResponse meterValuesResponse = new MeterValuesResponse();
meterValuesResponse.CustomData = new CustomDataType();
meterValuesResponse.CustomData.VendorId = VendorId;
int? connectorId = null;
string msgMeterValue = string.Empty;
try
{
Logger.LogTrace("Processing meter values...");
MeterValuesRequest meterValueRequest = JsonConvert.DeserializeObject <MeterValuesRequest>(msgIn.JsonPayload);
Logger.LogTrace("MeterValues => Message deserialized");
connectorId = meterValueRequest.EvseId;
if (ChargePointStatus != null)
{
// Known charge station => extract meter values with correct scale
double currentChargeKW = -1;
double meterKWH = -1;
double stateOfCharge = -1;
GetMeterValues(meterValueRequest.MeterValue, out meterKWH, out currentChargeKW, out stateOfCharge);
// write charging/meter data in chargepoint status
ChargingData chargingData = null;
if (currentChargeKW >= 0 || meterKWH >= 0 || stateOfCharge >= 0)
{
chargingData = new ChargingData();
if (currentChargeKW >= 0)
{
chargingData.ChargeRateKW = currentChargeKW;
}
if (meterKWH >= 0)
{
chargingData.MeterKWH = meterKWH;
}
if (stateOfCharge >= 0)
{
chargingData.SoC = stateOfCharge;
}
msgMeterValue = $"Meter (kWh): {meterKWH} | Charge (kW): {currentChargeKW} | SoC (%): {stateOfCharge}";
}
if (connectorId > 1)
{
// second connector (odr higher!?)
ChargePointStatus.ChargingDataEVSE2 = chargingData;
}
else
{
// first connector
ChargePointStatus.ChargingDataEVSE1 = chargingData;
}
}
else
{
// Unknown charge station
errorCode = ErrorCodes.GenericError;
}
msgOut.JsonPayload = JsonConvert.SerializeObject(meterValuesResponse);
Logger.LogTrace("MeterValues => Response serialized");
}
catch (Exception exp)
{
Logger.LogError(exp, "MeterValues => Exception: {0}", exp.Message);
errorCode = ErrorCodes.InternalError;
}
WriteMessageLog(ChargePointStatus.Id, connectorId, msgIn.Action, msgMeterValue, errorCode);
return(errorCode);
}
