Easee EV Charger

[tomnord]

Hello, any ideas on how to integrate this? 

https://api.easee.cloud/index.html



I've found a Python script on github, is it possible to convert this in any way?

https://github.com/fondberg/pyeasee



Regards..

[admin]

This is a similar API: https://forum.logicmachine.net/showthread.php?tid=1786
There's a difference in login procedure (GetToken function). You need to set the 'content-type' header to 'application/json' and send username/password as json string:

Code:

request_body= json.encode({
  userName = 'aaa',
  password = 'bbb',
})

[tomnord]

Thanks, it works.

What would be the best way if i wanted the connection to the API to stay active, and then run seperate scripts for various commands?
It's not best practise to request new tokens for every command.

[admin]

Create a scheduled script that will call GetToken() periodically and save the token into storage. All other scripts will use this token to make requests.
Check the expiresIn field that /api/accounts/token returns. It will tell for how many seconds the token is valid. Adjust scheduled script execution period accordingly.

[P3774n]

Thanks, it works.

What would be the best way if i wanted the connection to the API to stay active, and then run seperate scripts for various commands?
It's not best practise to request new tokens for every command.

Did you get your script to work?

Are you willing to share your script and the commands for the Easee charger?

[Habib]

that would be very nice and would save me a lot of time :-)

[tomnord]

Works like a charm. I'll post when I have access to my LM again.

[P3774n]

Works like a charm. I'll post when I have access to my LM again.

Hi soo exaited about this!

Will you post it? Or sent it on PM?

Thanks

[tomnord]

Code:

-- Load modules
require('json')
require('ssl.https')
require('ltn12')

-- Set credentials for Easee API
ChargerID = storage.get('EaseeAPI_ChargerID')
API_Token = storage.get('EaseeAPI_Token')  --reads API Token from storage, The token is fetched from scheduled script: "Easee_Authenticate"
--log(ChargerID)


function RequestFromEasee(request)
  request_url = 'https://api.easee.cloud/api/' .. request
  local response_body = {}
  local request_body = ""
  local body, code, hdrs, stat = ssl.https.request{
    url = request_url;
    method = "GET";
    headers =
    {
      ["Content-Type"] = "application/json";
      ["Authorization"] = "Bearer " .. API_Token;
    };
    source = ltn12.source.string(request_body);
    sink = ltn12.sink.table(response_body);
  }
  log(code)
  if code == 200 then
    ret = table.concat(response_body)
    ret = json.pdecode(ret)
    return ret
  else
    --API_Token = GetToken() -- request a new token
  end

end


-- Get products, run once to get charger ID
if ChargerID == nil then
chargers = RequestFromEasee('chargers')
Easee_ChargerID = chargers[1]["id"]
--log(Easee_ChargerID, 'ID') -- Check here for your charger ID
storage.set('EaseeAPI_ChargerID', Easee_ChargerID)

end

ChargerState = RequestFromEasee('chargers/' .. ChargerID  .. '/state')
log(ChargerState)
currentChargePower = ChargerState["totalPower"]
currentCableRating = ChargerState["cableRating"]
currentMaxPower = ChargerState["outputCurrent"]
chargerOnline = ChargerState["isOnline"]
currentChargeEnergy = ChargerState["sessionEnergy"]

log(currentChargePower, currentCableRating, currentMaxPower, chargerOnline, currentChargeEnergy)




function WriteToEasee(request, request_body)
  request_url = 'https://api.easee.cloud/api/' .. request
  local response_body = {}
  local content_length

  if type(request_body) == "string" then
    content_length = #request_body
  else
    request_body = ""
  end

  local body, code, hdrs, stat = ssl.https.request{
    url = request_url;
    method = "POST";
    headers =
    {
      ["Content-Type"] = "application/json";
      ["Authorization"] = "Bearer " .. API_Token;
      ["Content-Length"] = content_length;
    };
    source = ltn12.source.string(request_body);
    sink = ltn12.sink.table(response_body);
  }
  log(code)
  if code == 200 then
    ret = table.concat(response_body)
    ret = json.pdecode(ret)
    return ret
  else
    API_Token = GetToken() -- request a new token
  end
end

---

Code:

require('json')
require('ssl.https')
require('ltn12')

-- Set credentials for Easee API
email ='****************'
password ='*************'

function GetToken()
  request_token_url = 'https://api.easee.cloud/api/accounts/login'
  local response_body = {}
  local request_body = json.encode({
      userName = email,
      password = password,
})
  local body, code, hdrs, stat = ssl.https.request{
    url = request_token_url;
    method = "POST";
    headers =
    {
      ["Content-Type"] = "application/json";
      ["Content-Length"] = #request_body;
    };
    source = ltn12.source.string(request_body);
    sink = ltn12.sink.table(response_body);
  }
  log(code)
  if code == 200 then
    ret = table.concat(response_body)
    ret = json.pdecode(ret)
    log(ret)
    return ret.accessToken
  end
end

-- Request token
if not API_Token then
    API_Token = GetToken()
      log(API_Token, 'api_token')
end


--Store API Token to memory
storage.set('EaseeAPI_Token', API_Token)

[johan84]

Here is a script I use at a client's company to visualize the current charging power at each charging point in their company parking lot. Thank you tomnord for the earlier scrips

Code:

-- Load required libraries once
require('json')
require('ssl.https')
require('ltn12')
-- Your configuration
local API_Token = storage.get('EaseeAPI_Token')
-- Define all 8 charging stations with placeholder names, IDs and KNX group addresses
local chargingStations = {
  { name = 'charger 1', id = 'charger 1 id', ga = '55/1/1' },
  { name = 'charger 2', id = 'charger 2 id', ga = '55/1/2' },
  { name = 'charger 3', id = 'charger 3 id', ga = '55/1/3' },
  { name = 'charger 4', id = 'charger 4 id', ga = '55/1/4' },
  { name = 'charger 5', id = 'charger 5 id', ga = '55/1/5' },
  { name = 'charger 6', id = 'charger 6 id', ga = '55/1/6' },
  { name = 'charger 7', id = 'charger 7 id', ga = '55/1/7' },
  { name = 'charger 8', id = 'charger 8 id', ga = '55/1/8' },
}
-- Function for making a GET request to the Easee API
local function RequestFromEasee(endpoint)
  local url      = 'https://api.easee.cloud/api/' .. endpoint
  local response = {}
  local _, code  = ssl.https.request{
    url    = url,
    method  = "GET",
    headers = {
      ["Content-Type"]  = "application/json",
      ["Authorization"] = "Bearer " .. API_Token,
    },
    sink = ltn12.sink.table(response),
  }
  if code == 200 then
    return json.pdecode(table.concat(response))
  else
    log('Easee API error (' .. endpoint .. '): ' .. tostring(code))
    return nil
  end
end
-- Parameters for power calculation
local voltage = 230    -- V per phase
local phases  = 3      -- three-phase
local cosFi  = 0.95  -- power factor, adjust if needed
-- Loop over all charging stations
for _, station in ipairs(chargingStations) do
  -- Fetch status
  local state = RequestFromEasee('chargers/' .. station.id .. '/state')
  if state then
    -- Try to use totalPower directly
    local power = state.totalPower
    if not power or power == 0 then
      -- Fallback: calculate using I × U × √3 × cosφ
      local current = state.outputCurrent or 0
      power = (current * voltage * phases * cosFi) / 1000  -- in kW
    end
    -- Send power (kW) to the configured KNX group address
    grp.write(station.ga, power)
  else
    log('Could not retrieve status for ' .. station.name .. ' (' .. station.id .. ')')
  end
end