How to read temperatures from mts200b?

[Topsham]

Thanks for all the great work Albert. I am very new to Python but I have successfully used your code to connect to my mts100v3 valves to read the actual and set temperatures to display on a tkinter house plan and I was hoping to get the same info in a similar way from some mts200b wall stats I also have. But when applying the same
temp = await dev.async_get_temperature()
to a mts200b I get

'mts200b:7.0.0:7.6.3' object has no attribute 'async_get_temperature'

I only want to read the actual and set temps from the mts200b and not control them in any way. Is there a similar command to do this do you know?

Many thanks

[albertogeniola]

Hi!

The MTS200 Thermostat should implement the Thermostat Mixin, which implements the following signature.

    def current_temperature_celsius(self) -> Optional[float]:

You should be able to get the currently sampled temperature with the following method:

# dev = ...
temp = dev.current_temperature_celsius()

I am not sure about the MTS200b version, but there are good chance it works as well.
Give it a try and let me know if that works as intended.

[Topsham]

Alberto

I am still getting
AttributeError: 'mts200b:7.0.0:7.6.3' object has no attribute 'current_temperature_celsius'

However I am maybe missing something else given I am a bit of a newbie? Below is my full code (with mysql db updating removed). It prints the results for the mts100v3 perfectly well but then gives above error when it gets to the mts200b.

-- coding: utf-8 --

#!/usr/bin/python3

import asyncio
from time import sleep

from meross_iot.http_api import MerossHttpClient
from meross_iot.manager import MerossManager
import mariadb as mdb

Parameters

EMAIL = "***" # Meross account log in
PASSWORD = ""

async def main():
http_api_client = await MerossHttpClient.async_from_user_password(email=EMAIL, password=PASSWORD)
manager = MerossManager(http_client=http_api_client)
await manager.async_init()

Discover devices.

await manager.async_device_discovery()
meross_devices = manager.find_devices()

# Print them
print("I've found the following devices:")
for dev in meross_devices:
    print(f"- {dev.name} ({dev.type}): {dev.online_status}")
    if dev.type == 'mts100v3':
        await dev.async_update()
        temp = await dev.async_get_temperature()
        print(f"Current ambient temperature = {temp} °C, "
              f"Target Temperature = {dev.target_temperature}, "
              f"mode = {dev.mode},"
              f"heating = {dev.is_heating}")



    if dev.type == 'mts200b':
        await dev.async_update()
        temp = await dev.async_get_current_temperature_celsius()
        print(f"Current ambient temperature = {temp} °C, "
              f"Target Temperature = {dev.target_temperature}, "
              f"mode = {dev.mode},"
              f"heating = {dev.is_heating}")


manager.close()
await http_api_client.async_logout()

if name == 'main':
loop = asyncio.get_event_loop()
loop.run_until_complete(main())
loop.close()

[Topsham]

Hi again Alberto
Firstly my apologies for the previous poor code formatting (I am new to Github). I have now used your example.py to try and get the current temperature from my mts200b stats but I get:

Traceback (most recent call last):
  File "/home/pi/myexample.py", line 43, in <module>
    loop.run_until_complete(main())
  File "/usr/lib/python3.9/asyncio/base_events.py", line 642, in run_until_complete
    return future.result()
  File "/home/pi/myexample.py", line 32, in main
    temp = dev.current_temperature_celsius()
AttributeError: 'mts200b:7.0.0:7.6.3' object has no attribute 'current_temperature_celsius'

Could it be that the mts200b is different from the mts200 and if so would it help if I sent you some sniffing data?

Thanks

# -*- coding: utf-8 -*-
#!/usr/bin/python3
# myexample.py

import asyncio
from time import sleep

from meross_iot.http_api import MerossHttpClient
from meross_iot.manager import MerossManager
import mariadb as mdb

EMAIL = "**********"
PASSWORD = "*********"

async def main():
    http_api_client = await MerossHttpClient.async_from_user_password(email=EMAIL, password=PASSWORD)
    manager = MerossManager(http_client=http_api_client)
    await manager.async_init()

    # Retrieve all the Mts200b devices that are registered on this account
    await manager.async_device_discovery()
    sensors = manager.find_devices(device_type="mts200b")

    if len(sensors) < 1:
        print("No mts200b found...")
    else:
        dev = sensors[0]

        await dev.async_update()

        # Access read cached data
        temp = dev.current_temperature_celsius()
        print(temp)

    manager.close()
    await http_api_client.async_logout()



if __name__ == '__main__':

    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())
    loop.close()

[albertogeniola]

Hi,
that might be possibile.
Can you inspect the _abilities attribute of the dev variable? Something like this should work:

# ... omissis
dev = sensors[0]
print(dev._abilities) # This will print the device abilities
print(dir(dev)) # This will print the device available methods/attributes
print(dev) # This will print some more info about the instance itself

Would you mind attaching that output?

[Topsham]

Hi Alberto - below is the output that produces. At present I am only interested in getting the current and set temperatures but being able to adjust the set temperature (not the schedule) would be a bonus!

------- Manager Discovery ended -------

{'Appliance.Config.Key': {}, 'Appliance.Config.WifiList': {}, 'Appliance.Config.Wifi': {}, 'Appliance.Config.WifiX': {}, 'Appliance.Config.Trace': {}, 'Appliance.Config.Info': {}, 'Appliance.System.All': {}, 'Appliance.System.Hardware': {}, 'Appliance.System.Firmware': {}, 'Appliance.System.Debug': {}, 'Appliance.System.Online': {}, 'Appliance.System.Time': {}, 'Appliance.System.Clock': {}, 'Appliance.System.Ability': {}, 'Appliance.System.Runtime': {}, 'Appliance.System.Report': {}, 'Appliance.System.Position': {}, 'Appliance.Mcu.Firmware': {}, 'Appliance.Control.Multiple': {'maxCmdNum': 5}, 'Appliance.Control.Bind': {}, 'Appliance.Control.Unbind': {}, 'Appliance.Control.Upgrade': {}, 'Appliance.Control.PhysicalLock': {}, 'Appliance.Control.Thermostat.HoldAction': {}, 'Appliance.Control.Thermostat.Mode': {}, 'Appliance.Control.Thermostat.Calibration': {}, 'Appliance.Control.Thermostat.DeadZone': {}, 'Appliance.Control.Thermostat.Frost': {}, 'Appliance.Control.Thermostat.Overheat': {}, 'Appliance.Control.Thermostat.WindowOpened': {}, 'Appliance.Control.Thermostat.Schedule': {}, 'Appliance.Control.Screen.Brightness': {}, 'Appliance.Control.Thermostat.Sensor': {}, 'Appliance.Digest.TriggerX': {}, 'Appliance.Digest.TimerX': {}}

['annotations', 'class', 'delattr', 'dict', 'dir', 'doc', 'eq', 'format', 'ge', 'getattribute', 'gt', 'hash', 'init', 'init_subclass', 'le', 'lt', 'module', 'ne', 'new', 'reduce', 'reduce_ex', 'repr', 'setattr', 'sizeof', 'str', 'subclasshook', 'weakref', '_abilities', '_abilities_spec', '_align_temp', '_channels', '_execute_command', '_fire_push_notification_event', '_fwversion', '_hwversion', '_inner_ip', '_last_full_update_ts', '_manager', '_mqtt_host', '_mqtt_port', '_name', '_online', '_parse_channels', '_push_coros', '_thermostat_state_by_channel', '_timeout', '_type', '_update_mode', '_uuid', 'abilities', 'async_handle_push_notification', 'async_handle_update', 'async_set_thermostat_config', 'async_update', 'channels', 'check_full_update_done', 'default_command_timeout', 'dismiss', 'firmware_version', 'get_thermostat_state', 'hardware_version', 'internal_id', 'lan_ip', 'last_full_update_timestamp', 'lookup_channel', 'mqtt_host', 'mqtt_port', 'name', 'online_status', 'register_push_notification_handler_coroutine', 'type', 'unregister_push_notification_handler_coroutine', 'update_from_http_state', 'uuid']

Hall (mts200b, HW 7.0.0, FW 7.6.5, class: mts200b:7.0.0:7.6.5)
INFO:Manager stop requested.
INFO:Disconnection detected. Reason: 0
INFO:Logout succeeded.

[albertogeniola]

Ok, my bad.
You should already be able to retrieve the info you are looking for. Try the following:

# -*- coding: utf-8 -*-
#!/usr/bin/python3
# myexample.py

import asyncio
from time import sleep

from meross_iot.http_api import MerossHttpClient
from meross_iot.manager import MerossManager
import mariadb as mdb

EMAIL = "**********"
PASSWORD = "*********"

async def main():
    http_api_client = await MerossHttpClient.async_from_user_password(email=EMAIL, password=PASSWORD)
    manager = MerossManager(http_client=http_api_client)
    await manager.async_init()

    # Retrieve all the Mts200b devices that are registered on this account
    await manager.async_device_discovery()
    sensors = manager.find_devices(device_type="mts200b")

    if len(sensors) < 1:
        print("No mts200b found...")
    else:
        dev = sensors[0]

        await dev.async_update()

        # Access read cached data
        state = dev.get_thermostat_state()  # Added this line!
        temp = state.current_temperature_celsius
        print(temp)

    manager.close()
    await http_api_client.async_logout()



if __name__ == '__main__':

    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())
    loop.close()

Note: the sampled temperature is "cached". If you want to access every time an updated value, be sure to invoke the await dev.async_update() method just before the invocation of get_thermostat_state() and its current_temperature_celsius property.

Let me know if that works!

[Topsham]

Hi Alberto
Yes that works and

target_temp = state.target_temperature_celsius

also works.

I have tried several variations to get if dev.is_heating but they do not work. It's not too important for me, but maybe you know it??
Grazie Mille

[Topsham]

Hi Alberto
Was all working fine as above but did an update/upgrade today and am now getting the following error:

 await manager.async_device_discovery()
  File "/usr/local/lib/python3.9/dist-packages/meross_iot/manager.py", line 331, in async_device_discovery
    http_devices = await self._http_client.async_list_devices()
  File "/usr/local/lib/python3.9/dist-packages/meross_iot/http_api.py", line 417, in async_list_devices
    return [HttpDeviceInfo.from_dict(x) for x in result]
  File "/usr/local/lib/python3.9/dist-packages/meross_iot/http_api.py", line 417, in <listcomp>
    return [HttpDeviceInfo.from_dict(x) for x in result]
  File "/usr/local/lib/python3.9/dist-packages/meross_iot/model/shared.py", line 27, in from_dict
    obj = cls(**new_dict)
TypeError: __init__() missing 1 required positional argument: 'skill_number'

[albertogeniola]

Hi,
That was not your fault but a change performed by Meross engineers on their side: that broke our library. See #274.

You just need to upgrade to the latest available version and that should be fine.

Let me know!

[Topsham]

Hi Aberto

In order to flag if the MTS200b is heating I have so far just been comparing the current and target temperatures but this is of course not really accurate depending on the switching differential set for each stat. I have tried

 if dev.type == 'mts200b':


            await dev.async_update()
            state = (dev.get_thermostat_state())
            temp = state.current_temperature_celsius
            tar  = state.target_temperature_celsius
            heating = state.is_heating
            print (heating)
            print (temp)
            print (tar)

but I get "AttributeError: 'ThermostatState' object has no attribute 'is_heating'"

Do you happen to know the attribute name for this?