Tesla Wall Charger (Gen3) API Statistics

Python · February 18, 2022, 3:26pm

The Gen 3 Tesla Wall Chargers with WIFI have an API available at a few URLs:

To parse these values into OpenHAB to be used for your rules create the following:

Tesla.Items

Group                       Tesla
Group                       WallCharger                                                                                            (Tesla)
Group                       gWallConnector_Vitals_Parse_json                                                                       (WallCharger)                            //JSON API: http://192.168.X.XX/api/1/vitals
Group                       gWallConnector_LifeTime_Parse_json                                                                     (WallCharger)                            //JSON API: http://192.168.X.XX/api/1/lifetime
Group                       gWallConnector_Version_Parse_json                                                                      (WallCharger)                            //JSON API: http://192.168.X.XX/api/1/version
//JSON
String                      G_Tesla_WallConnector_Vitals_JSON                         "Tesla WallConnector Vitals JSON: [%s]"
String                      G_Tesla_WallConnector_LifeTime_JSON                       "Tesla WallConnector LifeTime JSON: [%s]"
String                      G_Tesla_WallConnector_Version_JSON                        "Tesla WallConnector Version JSON: [%s]"
//Items parsed from http://192.168.X.XX/api/1/vitals
String                      G_Tesla_WallConnector_Vitals_contactor_closed             "contactor_closed"                           (gWallConnector_Vitals_Parse_json)
String                      G_Tesla_WallConnector_Vitals_vehicle_connected            "vehicle_connected"                          (gWallConnector_Vitals_Parse_json)
Number                      G_Tesla_WallConnector_Vitals_session_s                    "Sessions"                                   (gWallConnector_Vitals_Parse_json)
Number:ElectricPotential    G_Tesla_WallConnector_Vitals_grid_v                       "Grid Voltage"                               (gWallConnector_Vitals_Parse_json)
Number:Frequency            G_Tesla_WallConnector_Vitals_grid_hz                      "Grid Hertz"                                 (gWallConnector_Vitals_Parse_json)
Number:ElectricCurrent      G_Tesla_WallConnector_Vitals_vehicle_current_a            "Vehicle Amps"                               (gWallConnector_Vitals_Parse_json)
Number:ElectricCurrent      G_Tesla_WallConnector_Vitals_currentA_a                   "currentA_a"                                 (gWallConnector_Vitals_Parse_json)
Number:ElectricCurrent      G_Tesla_WallConnector_Vitals_currentB_a                   "currentB_a"                                 (gWallConnector_Vitals_Parse_json)
Number:ElectricCurrent      G_Tesla_WallConnector_Vitals_currentC_a                   "currentC_a"                                 (gWallConnector_Vitals_Parse_json)
Number:ElectricCurrent      G_Tesla_WallConnector_Vitals_currentN_a                   "currentN_a"                                 (gWallConnector_Vitals_Parse_json)
Number:ElectricPotential    G_Tesla_WallConnector_Vitals_voltageA_v                   "voltageA_v"                                 (gWallConnector_Vitals_Parse_json)
Number:ElectricPotential    G_Tesla_WallConnector_Vitals_voltageB_v                   "voltageB_v"                                 (gWallConnector_Vitals_Parse_json)
Number:ElectricPotential    G_Tesla_WallConnector_Vitals_voltageC_v                   "voltageC_v"                                 (gWallConnector_Vitals_Parse_json)
Number:ElectricPotential    G_Tesla_WallConnector_Vitals_relay_coil_v                 "relay_coil_v"                               (gWallConnector_Vitals_Parse_json)
Number:Temperature          G_Tesla_WallConnector_Vitals_pcba_temp_c                  "pcba_temp_c"                                (gWallConnector_Vitals_Parse_json)
Number:Temperature          G_Tesla_WallConnector_Vitals_handle_temp_c                "handle_temp_c"                              (gWallConnector_Vitals_Parse_json)
Number:Temperature          G_Tesla_WallConnector_Vitals_mcu_temp_c                   "mcu_temp_c"                                 (gWallConnector_Vitals_Parse_json)
Number:Time                 G_Tesla_WallConnector_Vitals_uptime_s                     "uptime_s"                                   (gWallConnector_Vitals_Parse_json)
Number                      G_Tesla_WallConnector_Vitals_input_thermopile_uv          "input_thermopile_uv"                        (gWallConnector_Vitals_Parse_json)
Number                      G_Tesla_WallConnector_Vitals_prox_v                       "prox_v"                                     (gWallConnector_Vitals_Parse_json)
Number:ElectricPotential    G_Tesla_WallConnector_Vitals_pilot_high_v                 "pilot_high_v"                               (gWallConnector_Vitals_Parse_json)
Number:ElectricPotential    G_Tesla_WallConnector_Vitals_pilot_low_v                  "pilot_low_v"                                (gWallConnector_Vitals_Parse_json)
Number:Energy               G_Tesla_WallConnector_Vitals_session_energy_wh            "session_energy_wh"                          (gWallConnector_Vitals_Parse_json)
Number                      G_Tesla_WallConnector_Vitals_config_status                "config_status"                              (gWallConnector_Vitals_Parse_json)
Number                      G_Tesla_WallConnector_Vitals_evse_state                   "evse_state"                                 (gWallConnector_Vitals_Parse_json)

//Items parsed from http://192.168.X.XX/api/1/lifetime
Number                      G_Tesla_WallConnector_Lifetime_contactor_cycles           "contactor_cycles"                           (gWallConnector_LifeTime_Parse_json)
Number                      G_Tesla_WallConnector_Lifetime_contactor_cycles_loaded    "contactor_cycles_loaded"                    (gWallConnector_LifeTime_Parse_json)
Number                      G_Tesla_WallConnector_Lifetime_thermal_foldbacks          "thermal_foldbacks"                          (gWallConnector_LifeTime_Parse_json)
Number:Temperature          G_Tesla_WallConnector_Lifetime_avg_startup_temp           "avg_startup_temp"                           (gWallConnector_LifeTime_Parse_json)
Number                      G_Tesla_WallConnector_Lifetime_charge_starts              "charge_starts"                              (gWallConnector_LifeTime_Parse_json)
Number:Energy               G_Tesla_WallConnector_Lifetime_energy_wh                  "energy_wh"                                  (gWallConnector_LifeTime_Parse_json)
Number                      G_Tesla_WallConnector_Lifetime_connector_cycles           "connector_cycles"                           (gWallConnector_LifeTime_Parse_json)
Number:Time                 G_Tesla_WallConnector_Lifetime_uptime_s                   "uptime_s"                                   (gWallConnector_LifeTime_Parse_json)
Number:Time                 G_Tesla_WallConnector_Lifetime_charging_time_s            "charging_time_s"                            (gWallConnector_LifeTime_Parse_json)

//Items parsed from http://192.168.X.XX/api/1/version
String                      G_Tesla_WallConnector_Version_firmware_version            "firmware_version"                           (gWallConnector_Version_Parse_json)
String                      G_Tesla_WallConnector_Version_part_number                 "part_number"                                (gWallConnector_Version_Parse_json)
String                      G_Tesla_WallConnector_Version_serial_number               "serial_number"                              (gWallConnector_Version_Parse_json)

Tesla.rules

val String filename = "Tesla.rules"
rule "Retrieve JSON Values from API"
when
    Time cron "0/30 * * * * ?"
then
    //val String apiURL = sendHttpGetRequest("http://192.168.X.XX/api/1/vitals")
G_Tesla_WallConnector_Vitals_JSON.sendCommand(sendHttpGetRequest("http://192.168.X.XX/api/1/vitals"))
G_Tesla_WallConnector_LifeTime_JSON.sendCommand(sendHttpGetRequest("http://192.168.X.XX/api/1/lifetime"))
G_Tesla_WallConnector_Version_JSON.sendCommand(sendHttpGetRequest("http://192.168.X.XX/api/1/version"))
end

rule "Tesla WallCharger: Parse JSON output for /vitals"
when
   Item G_Tesla_WallConnector_Vitals_JSON changed
then
logInfo(filename+".R1", "### Tesla WallCharger: Parse JSON output for /vitals ###")

{
   val String json = (G_Tesla_WallConnector_Vitals_JSON.state as StringType).toString
   gWallConnector_Vitals_Parse_json.members.forEach [ value |
      var String name = value.name.replace('G_Tesla_WallConnector_Vitals_','$.')
      value.postUpdate(transform("JSONPATH", name, json).replaceAll('"',''))
   ]
}
end

rule "Tesla WallCharger: Parse JSON output for /lifetime"
when
   Item G_Tesla_WallConnector_LifeTime_JSON changed
then
logInfo(filename+".R2", "### Tesla WallCharger: Parse JSON output for /lifetime ###")
{
   val String json = (G_Tesla_WallConnector_LifeTime_JSON.state as StringType).toString
   gWallConnector_LifeTime_Parse_json.members.forEach [ value |
      var String name = value.name.replace('G_Tesla_WallConnector_Lifetime_','$.')
      value.postUpdate(transform("JSONPATH", name, json).replaceAll('"',''))
   ]
}
end

rule "Tesla WallCharger: Parse JSON output for /version"
when
   Item G_Tesla_WallConnector_Version_JSON changed
then
logInfo(filename+".R3", "### Tesla WallCharger: Parse JSON output for /version ###")
{
   val String json = (G_Tesla_WallConnector_Version_JSON.state as StringType).toString
   gWallConnector_Version_Parse_json.members.forEach [ value |
      var String name = value.name.replace('G_Tesla_WallConnector_Version_','$.')
      value.postUpdate(transform("JSONPATH", name, json).replaceAll('"',''))
   ]
}

end

Petr_Kocandrle · April 3, 2023, 8:55pm

Nice one! Do you know if there is also an API endpoint to send commands to the charger, e.g. start/stop charging or limiting the max charge current to make it work with non-Tesla vehicles without a network connectivity/missing OpenHAB binding?

glebelg · August 9, 2023, 1:59pm

Hi,
I try to use that rule but it doesn’t seems to parse the string data correctly anymore.
I’m unable do find how to change the rule (sorry, I’m not a dev)

Here is an extract of the log

15:25:00.961 [INFO ] [openhab.event.ItemStateChangedEvent  ] - Item 'G_Tesla_WallConnector_LifeTime_JSON' changed from {"contactor_cycles":53,"contactor_cycles_loaded":0,"alert_count":383,"thermal_foldbacks":0,"avg_startup_temp":30.5,"charge_starts":53,"energy_wh":104739,"connector_cycles":12,"uptime_s":619648,"charging_time_s":85376} to {"contactor_cycles":53,"contactor_cycles_loaded":0,"alert_count":383,"thermal_foldbacks":0,"avg_startup_temp":30.5,"charge_starts":53,"energy_wh":104739,"connector_cycles":12,"uptime_s":619649,"charging_time_s":85376}
15:25:00.961 [INFO ] [nhab.core.model.script.Tesla.rules.R2] - ### Tesla WallCharger: Parse JSON output for /lifetime ###
15:25:00.962 [WARN ] [ab.core.model.script.actions.BusEvent] - Cannot convert '{contactor_cycles:53,contactor_cycles_loaded:0,alert_count:383,thermal_foldbacks:0,avg_startup_temp:30.5,charge_starts:53,energy_wh:104739,connector_cycles:12,uptime_s:619649,charging_time_s:85376}' to a state type which item 'G_Tesla_WallConnector_Lifetime_contactor_cycles' accepts: [DecimalType, QuantityType, UnDefType].
15:25:00.962 [WARN ] [ab.core.model.script.actions.BusEvent] - Cannot convert '{contactor_cycles:53,contactor_cycles_loaded:0,alert_count:383,thermal_foldbacks:0,avg_startup_temp:30.5,charge_starts:53,energy_wh:104739,connector_cycles:12,uptime_s:619649,charging_time_s:85376}' to a state type which item 'G_Tesla_WallConnector_Lifetime_contactor_cycles_loaded' accepts: [DecimalType, QuantityType, UnDefType].
15:25:00.962 [WARN ] [ab.core.model.script.actions.BusEvent] - Cannot convert '{contactor_cycles:53,contactor_cycles_loaded:0,alert_count:383,thermal_foldbacks:0,avg_startup_temp:30.5,charge_starts:53,energy_wh:104739,connector_cycles:12,uptime_s:619649,charging_time_s:85376}' to a state type which item 'G_Tesla_WallConnector_Lifetime_thermal_foldbacks' accepts: [DecimalType, QuantityType, UnDefType].
15:25:00.962 [WARN ] [ab.core.model.script.actions.BusEvent] - Cannot convert '{contactor_cycles:53,contactor_cycles_loaded:0,alert_count:383,thermal_foldbacks:0,avg_startup_temp:30.5,charge_starts:53,energy_wh:104739,connector_cycles:12,uptime_s:619649,charging_time_s:85376}' to a state type which item 'G_Tesla_WallConnector_Lifetime_avg_startup_temp' accepts: [DecimalType, QuantityType, UnDefType].
15:25:00.963 [WARN ] [ab.core.model.script.actions.BusEvent] - Cannot convert '{contactor_cycles:53,contactor_cycles_loaded:0,alert_count:383,thermal_foldbacks:0,avg_startup_temp:30.5,charge_starts:53,energy_wh:104739,connector_cycles:12,uptime_s:619649,charging_time_s:85376}' to a state type which item 'G_Tesla_WallConnector_Lifetime_charge_starts' accepts: [DecimalType, QuantityType, UnDefType].
15:25:00.963 [WARN ] [ab.core.model.script.actions.BusEvent] - Cannot convert '{contactor_cycles:53,contactor_cycles_loaded:0,alert_count:383,thermal_foldbacks:0,avg_startup_temp:30.5,charge_starts:53,energy_wh:104739,connector_cycles:12,uptime_s:619649,charging_time_s:85376}' to a state type which item 'G_Tesla_WallConnector_Lifetime_energy_wh' accepts: [DecimalType, QuantityType, UnDefType].
15:25:00.963 [WARN ] [ab.core.model.script.actions.BusEvent] - Cannot convert '{contactor_cycles:53,contactor_cycles_loaded:0,alert_count:383,thermal_foldbacks:0,avg_startup_temp:30.5,charge_starts:53,energy_wh:104739,connector_cycles:12,uptime_s:619649,charging_time_s:85376}' to a state type which item 'G_Tesla_WallConnector_Lifetime_connector_cycles' accepts: [DecimalType, QuantityType, UnDefType].
15:25:00.963 [WARN ] [ab.core.model.script.actions.BusEvent] - Cannot convert '{contactor_cycles:53,contactor_cycles_loaded:0,alert_count:383,thermal_foldbacks:0,avg_startup_temp:30.5,charge_starts:53,energy_wh:104739,connector_cycles:12,uptime_s:619649,charging_time_s:85376}' to a state type which item 'G_Tesla_WallConnector_Lifetime_uptime_s' accepts: [DecimalType, QuantityType, UnDefType].
15:25:00.963 [WARN ] [ab.core.model.script.actions.BusEvent] - Cannot convert '{contactor_cycles:53,contactor_cycles_loaded:0,alert_count:383,thermal_foldbacks:0,avg_startup_temp:30.5,charge_starts:53,energy_wh:104739,connector_cycles:12,uptime_s:619649,charging_time_s:85376}' to a state type which item 'G_Tesla_WallConnector_Lifetime_charging_time_s' accepts: [DecimalType, QuantityType, UnDefType].

Thanks for your help.

edit : openhab 4.0.1 and tesla wall connector fw version 23.8.2+gce13e49b546382

Python · August 11, 2023, 7:42pm

I haven’t moved to OH 4.x still running on 3.4.0.

What does your .items file look like for these items? It looks like its not liking the type “Number”

gab75 · August 27, 2023, 10:05am

You need to install “JsonPath Transformation Add-on”.
I tried and everything works fine.

fapg · March 2, 2024, 11:16pm

If you want can do it thought http binding. Something like this:

.things:

Thing http:url:tesla-wallcharger "Tesla Wall Charger" [
    baseURL="http://192.168.68.49/api/1/vitals",
    refresh=30] {
        Channels:
         Type string    : contactor_closed      "Contactor Closed"      [ stateTransformation="JSONPATH:$.contactor_closed" ]
         Type string    : vehicle_connected     "Vehicle Connected"     [ stateTransformation="JSONPATH:$.vehicle_connected" ]
         Type number    : currentA_a            "currentA"              [ stateTransformation="JSONPATH:$.currentA_a" ]
         Type number    : currentB_a            "currentB"              [ stateTransformation="JSONPATH:$.currentB_a" ]
         Type number    : currentC_a            "currentC"              [ stateTransformation="JSONPATH:$.currentC_a" ]
         Type number    : currentN_a            "currentN"              [ stateTransformation="JSONPATH:$.currentN_a" ]
         Type number    : voltageA_v            "voltageA"              [ stateTransformation="JSONPATH:$.voltageA_v" ]
         Type number    : voltageB_v            "voltageB"              [ stateTransformation="JSONPATH:$.voltageB_v" ]
         Type number    : voltageC_v            "voltageC"              [ stateTransformation="JSONPATH:$.voltageC_v" ]
         Type number    : pcba_temp_c           "pcba temp"             [ stateTransformation="JSONPATH:$.pcba_temp_c" ]
         Type number    : handle_temp_c         "handle temp"           [ stateTransformation="JSONPATH:$.handle_temp_c" ]
         Type number    : mcu_temp_c            "mcu temp"              [ stateTransformation="JSONPATH:$.mcu_temp_c" ]
         Type number    : session_energy_wh     "session energy"        [ stateTransformation="JSONPATH:$.session_energy_wh" ]
}

.items:

Group                           gTeslaWallCharger                       "Tesla Wall Charger"            <energy>                (gTesla)
String                          TeslaWallCharger_contactor_closed       "Contactor Closed [%s]"         <returnpipe>            (gTeslaWallCharger)     ["OpenState","Opening"]         {channel="http:url:tesla-wallcharger:contactor_closed"}
String                          TeslaWallCharger_vehicle_connected      "Vehicle Connected [%s]"        <returnpipe>            (gTeslaWallCharger)     ["OpenState","Opening"]         {channel="http:url:tesla-wallcharger:vehicle_connected"}
Number:ElectricCurrent          TeslaWallCharger_currentA_a             "Current A [%.1f %unit%]"       <energy>                (gTeslaWallCharger)     ["Measurement","Current"]       {channel="http:url:tesla-wallcharger:currentA_a"}
Number:ElectricCurrent          TeslaWallCharger_currentB_a             "Current B [%.1f %unit%]"       <energy>                (gTeslaWallCharger)     ["Measurement","Current"]       {channel="http:url:tesla-wallcharger:currentB_a"}
Number:ElectricCurrent          TeslaWallCharger_currentC_a             "Current C [%.1f %unit%]"       <energy>                (gTeslaWallCharger)     ["Measurement","Current"]       {channel="http:url:tesla-wallcharger:currentC_a"}
Number:ElectricCurrent          TeslaWallCharger_currentN_a             "Current N [%.1f %unit%]"       <energy>                (gTeslaWallCharger)     ["Measurement","Current"]       {channel="http:url:tesla-wallcharger:currentN_a"}
Number:ElectricPotential        TeslaWallCharger_voltageA_v             "voltage A [%.1f %unit%]"       <material_symbols_bolt> (gTeslaWallCharger)     ["Measurement","Voltage"]       {channel="http:url:tesla-wallcharger:voltageA_v"}
Number:ElectricPotential        TeslaWallCharger_voltageB_v             "voltage B [%.1f %unit%]"       <material_symbols_bolt> (gTeslaWallCharger)     ["Measurement","Voltage"]       {channel="http:url:tesla-wallcharger:voltageB_v"}
Number:ElectricPotential        TeslaWallCharger_voltageC_v             "Voltage C [%.1f %unit%]"       <material_symbols_bolt> (gTeslaWallCharger)     ["Measurement","Voltage"]       {channel="http:url:tesla-wallcharger:voltageC_v"}
Number:Temperature              TeslaWallCharger_pcba_temp_c            "pcba temp [%.1f %unit%]"       <temperature>           (gTeslaWallCharger)     ["Measurement","Temperature"]   {channel="http:url:tesla-wallcharger:pcba_temp_c"}
Number:Temperature              TeslaWallCharger_handle_temp_c          "handle temp [%.1f %unit%]"     <temperature>           (gTeslaWallCharger)     ["Measurement","Temperature"]   {channel="http:url:tesla-wallcharger:handle_temp_c"}
Number:Temperature              TeslaWallCharger_mcu_temp_c             "mcu temp [%.1f %unit%]"        <temperature>           (gTeslaWallCharger)     ["Measurement","Temperature"]   {channel="http:url:tesla-wallcharger:mcu_temp_c"}
Number:Energy                   TeslaWallCharger_session_energy_wh      "session energy [%.1f %unit%]"  <temperature>           (gTeslaWallCharger)     ["Measurement","Energy"]        {channel="http:url:tesla-wallcharger:session_energy_wh"}