Add support for Tesla Powerwall

estebanp · April 27, 2021, 4:12pm

yes, TeslaPy has operation mode and reserve setting.

Jez · April 27, 2021, 4:18pm

That is indeed excellent news. Thanks for your hard work. Looking to giving it a try.

nathanielh · April 28, 2021, 12:28am

you are the best, Esteban!

estebanp · April 28, 2021, 4:54am

Here is a beta version that works for me.

For those that have it failing, give it a try and report back.
You need to update two files:

in manifest.json:

{
  "domain": "tesla_gateway",
  "name": "Tesla Gateway",
  "documentation": "",
  "dependencies": [],
  "codeowners": [],
  "requirements": ["teslapy==1.1.0"],
  "version": "0.1.0"
}

The “requirements” there is very important.

in __init__.py:

"""
Monitors and controls the Tesla gateway.
"""
import logging

import asyncio
import voluptuous as vol
import teslapy

from homeassistant.const import (
    CONF_USERNAME,
    CONF_PASSWORD
    )
import homeassistant.helpers.config_validation as cv

DOMAIN = 'tesla_gateway'

_LOGGER = logging.getLogger(__name__)

CONFIG_SCHEMA = vol.Schema({
    DOMAIN: vol.Schema({
        vol.Required(CONF_USERNAME): cv.string,
        vol.Required(CONF_PASSWORD): cv.string
    }),
}, extra=vol.ALLOW_EXTRA)

@asyncio.coroutine
def async_setup(hass, config):

    domain_config = config[DOMAIN]
    conf_user = domain_config[CONF_USERNAME]
    conf_password = domain_config[CONF_PASSWORD]
    
    tesla = teslapy.Tesla(domain_config[CONF_USERNAME], domain_config[CONF_PASSWORD])

    def get_battery():
        batteries = tesla.battery_list()
        if len(batteries) > 0:
            return batteries[0]
        else:
            return None

    @asyncio.coroutine
    async def set_operation(service):
        
        battery = await hass.async_add_executor_job(get_battery)
        if not battery:
            _LOGGER.warning('Battery object is None')
            return None

        await hass.async_add_executor_job(battery.set_operation, service.data['real_mode'])
        if 'backup_reserve_percent' in service.data:
            await hass.async_add_executor_job(battery.set_backup_reserve_percent, service.data['backup_reserve_percent'])

    hass.services.async_register(DOMAIN, 'set_operation', set_operation)

    @asyncio.coroutine
    async def set_reserve(service):
        
        battery = await hass.async_add_executor_job(get_battery)
        if not battery:
            _LOGGER.warning('Battery object is None')
            return None
            
        if 'backup_reserve_percent' in service.data:
            await hass.async_add_executor_job(battery.set_backup_reserve_percent, service.data['backup_reserve_percent'])

    hass.services.async_register(DOMAIN, 'set_reserve', set_reserve)

    return True

Once we validate that this works by a couple of people over a couple of days I will upload it to GitHub - carboncoop/tesla-gateway-ha-component: A Home Assistant component to control Tesla Powerwall.

pnut · April 28, 2021, 7:47am

Well done! I can confirm its working on my setup! Backed up and replaced the files with the configuration above and its working again. I have tested going from self powered mode 10% reserve to backup 100% reserve and back again. I have also tested going from self powered mode 10% reserve to 25% reserve, then 50% reserve, then back to 10% reserve. Thanks for getting this working!

Brain1000 · April 28, 2021, 8:02am

It is working for me as well
Very many thanks for your work.

AndrewTapp · April 28, 2021, 8:39am

Added TeslaPy and updated as above.

Can confirm all working as expected now.

Great work, many thanks, appreciated.

james_hiscott · April 28, 2021, 10:00am

Yep working for me as well! Top work man

Jez · April 28, 2021, 12:59pm

Sorry to be asking a basic question but I’m very new to HA and although I had this integration working perfectly I’m not clear on how to update init.py (I presume I simply replace the text in manifest.json)

I’ve tried to replace init.py with the next text but the integration won’t start so I presume this is incorrect.

Please can anyone advise this newbie as I really want to get this working again. Thanks

estebanp · April 28, 2021, 1:57pm

yes, replacing the code in __init__.py with the one above + the manifest.json is all you have to do.
What error do you get?

Jez · April 28, 2021, 2:30pm

I restarted HA and in the notifications I get:

Invalid config
The following integrations and platforms could not be set up:

tesla_gateway
Please check your config and [logs]…

And when I view the integrations, the Tesla Gateway integration has a red border with the message:

Not loaded, check the logs.

The log says:
2021-04-28 15:20:56 WARNING (MainThread) [homeassistant.loader] You are using a custom integration tesla_gateway which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant

BruceH5200 · April 28, 2021, 5:06pm

Does this latest teslapy version work with MFA / 2FA ?
Or do I still need to do a fudge of getting the token in manually ?

It looks like the teslapy code does support MFA, is there any way of passing the MFA token into this tesla-gateway code ?

BruceH5200 · April 28, 2021, 6:24pm

For now, I’ve done another fudge.
Removed MFA from my account.
Got the latest tesla_gateway code running.

Switched MFA back on.
Manually generated a key and refresh key.
Manually put these into the cache.json file.

It seems to work, so it’ll do for now.
Will be interesting to see if it refreshes the token successfully when it expires ?
I suspect it won’t.

Is it achievable to get MFA implemented in this tesla_gateway script, the codes seems to exist in teslapy but it’s way beyond my abilities.

nathanielh · April 29, 2021, 12:13am

this works for me!

estebanp · April 29, 2021, 2:24pm

thats weird, it should not show in the integrations page since it doesnt have a pageflow. The setup of it has to be done through yaml configs (configuration.yaml).
Can you turn on the log for that integration and find what other messages are in the log? The one you sent is benign, is basically stating that is a custom integration.
To enable the log, add this to your configuration.yaml

logger:
  logs:
    custom_components.tesla_gateway: debug

estebanp · April 29, 2021, 2:38pm

Yes, its possible, TeslaPy supports it… however, I dunno how that will work in HA and long term. In theory, if the token is kept and renewed, you shouldnt need to re-authenticate with the MFA.
However, if the token expires, you would have to re-authenticate…

Usually APIs provide “api passwords” to bypass MFA, but I dont see Tesla providing that. It will also may not give you enough time to put it… if you put the MFA code in your configuration.yaml and reboot, it may be expired by the time is used (those things expire pretty quickly). We would have to add a configflow (those “cards” in the integrations page) so it is loaded dynamically without rebooting.

With configflow, the integration would just need to pass the passcode on the 3rd parameter of:

tesla = teslapy.Tesla(domain_config[CONF_USERNAME], domain_config[CONF_PASSWORD])

You can test it by adding a MFA token there, you will have to add some more code, search for CONF_PASSWORD and replicate for your config entry. Likely, the MFA token will be expired by the time is used, so you may need to add all the configflow thing.

BruceH5200 · April 29, 2021, 2:51pm

I did try putting the OTP in that line and updating the file while HA booted.
I wasn’t sure if I needed to add it as lambda: ‘123456’ or just as ‘123456’
I couldn’t get it to work which is why I resorted to manually changing the cache.json file.

In the long term if this code could move to a config flow, that would be fab, but it’s currently beyond me.
Maybe this is my time to learn this stuff and have a go !

estebanp · April 29, 2021, 2:58pm

give it a go!, I will try to add it whenever I have some more time…

I am trying to fix other stuff in my HA: the Tesla integration and now fighting with a rainforest energy metering device that hangs every other day.
Since this is now working for me, it went down in the priority list

BruceH5200 · May 3, 2021, 7:04pm

This code works for me.
(with MFA off).

The set_reserve service doesn’t seem to work.
But you can set the reserve with the set_operation service.

Is this intentional that set_reserve doesn’t work any more ?

estebanp · May 3, 2021, 7:33pm

Not intentional, if look at to the code is actually calling the same code from teslapy, maybe there is something weird under the hood there when just that API is called…

Do you get any error there in the log? did you double check to be calling it with the right backup_reserve_percent parameter?
I will check it whenever I have some time