Go-e Charger using OCPP with HA OCPP integration

[stumbaumr]

Hi,

I configured the Go-e Charger to connect to Home Assistant on Port 9000 using ws://:9000/go-e and basic stuff works.

But Go-e has the "MeterValuesSampledData" set to read-only and therefore I get the following warnings:

Warning: MeterValuesSampledData is read-only
Warning: charger reported NotSupported while setting MeterValuesSampledData=Energy.Active.Import.Register,Power.Active.Import,Power.Offered,Power.Factor,Current.Import,Current.Offered,Voltage,Frequency,Temperature

The charger reports the following on the GetConfiguration Request:

[3,"1241926357",{"configurationKey":[{"key":"AllowOfflineTxForUnknownId","readonly":false,"value":"0"},{"key":"GetConfigurationMaxKeys","readonly":true,"value":"99"},{"key":"ClockAlignedDataInterval","readonly":false,"value":"0"},{"key":"LocalAuthorizeOffline","readonly":false,"value":"0"},{"key":"HeartbeatInterval","readonly":false,"value":"60"},{"key":"LightIntensity","readonly":false,"value":"46"},{"key":"MeterValuesSampledData","readonly":true,"value":"Current.Import,Current.Offered,Energy.Active.Import.Register,Frequency,Power.Active.Import,Power.Factor,Power.Offered,Temperature,Voltage"},{"key":"MeterValuesSampledDataMaxLength","readonly":true,"value":"10"},{"key":"MeterValueSampleInterval","readonly":false,"value":"0"},{"key":"NumberOfConnectors","readonly":true,"value":"1"},{"key":"ConnectorPhaseRotation","readonly":true,"value":"0.RST,1.RST"},{"key":"ConnectorPhaseRotationMaxLength","readonly":true,"value":"3"},{"key":"SupportedFeatureProfiles","readonly":true,"value":"Core,FirmwareManagement,SmartCharging,RemoteTrigger"},{"key":"SupportedFeatureProfilesMaxLength","readonly":true,"value":"6"},{"key":"WebSocketPingInterval","readonly":false,"value":"10"},{"key":"LocalAuthListEnabled","readonly":false,"value":"0"},{"key":"LocalAuthListMaxLength","readonly":true,"value":"10"},{"key":"SendLocalListMaxLength","readonly":true,"value":"10"},{"key":"ChargeProfileMaxStackLevel","readonly":true,"value":"20"},{"key":"ChargingScheduleAllowedChargingRateUnit","readonly":true,"value":"Current"},{"key":"ChargingScheduleMaxPeriods","readonly":true,"value":"20"},{"key":"ConnectorSwitch3to1PhaseSupported","readonly":true,"value":"true"},{"key":"MaxChargingProfilesInstalled","readonly":true,"value":"20"}]}]

Maybe only sending ChangeConfiguration for MeterValuesSampledData if it is writeable would solve that.
And sorting the values for the key MeterValuesSampledData alphabetically would ease debugging ;-)

Oh, I just saw in the code(1), that if you would order MeterValuesSampledData alphabetically it would look like what is already configured so you would not send the ChangeConfiguration request. Maybe that is the simplest solution.
Sorting needs to happen above here(2).

Thanks
Rainer

(1) https://github.com/lbbrhzn/ocpp/blob/main/custom_components/ocpp/api.py#L804
(2) https://github.com/lbbrhzn/ocpp/blob/main/custom_components/ocpp/config_flow.py#L108