Implementation of Freeze Protection mode

[HausnerR]

Hey, I saw in source code (especially in midea-msmart repo) comments about freeze protection mode. Any chance to implement it based on this (https://github.com/mac-zhou/midea-msmart/blob/97723d055d8e5a3775eaaca96807f2dbbd6db2aa/msmart/device/AC/command.py#L478)?

Best, HausnerR

[mill1000]

We need a little more info on how to control the freeze protection mode. The comment referenced above only has information on what bit to check to see if it's enabled or not. We'd need to know what bit to send to control the mode.

Some packet captures between the mobile app and AC device would be a good start.

[audreez]

i can probably provide that, is it not encrypted?

[audreez]

i captured this between the minisplit and the router when i sent the FP command, is that what you are looking for ?

[mill1000]

No, I believe we need to packets between your phone and the minisplit unit. Those are more difficult to capture.

[HausnerR]

Hey, I found that this repo probably have code for enabling/disabling FP mode (based on readme).

https://github.com/reneklootwijk/midea-uart

Maybe it can be analyzed and ported into this project?

[mill1000]

Nice find. Working on this functionality in a branch here.

[audreez]

want me to test?

[mill1000]

That would be great. You'll need to manually install this branch of msmart as well: https://github.com/mill1000/midea-msmart/tree/feature/freeze_protection

[audreez]

getting this when trying to add the repo <Integration mill1000/midea-msmart> Repository structure for master is not compliant

[mill1000]

midea-msmart isn't a HACS repo. It has to be installed manually with pip in your HA environment

[mill1000]

I've updated the branches and I think this functionality is ready, but I can't actually test as my units don't implement this.

Manually install msmart branch in your HA environment

pip install git+https://github.com/mill1000/midea-msmart.git@feature/freeze_protection

Manually install midea-ac-py branch in your HA custom_components

git clone -b feature/freeze_protection https://github.com/mill1000/midea-ac-py.git
cp -r midea-ac-py/custom_components/midea_ac/ <path-to-custom-components>

[audreez]

thanks! im planning on testing this weekend

[audreez]

getting this after copying it to custom components

Logger: homeassistant.components.climate Source: helpers/entity_platform.py:193 Integration: Climate (documentation, issues) First occurred: 2:10:53 PM (2 occurrences) Last logged: 2:10:53 PM

The midea_ac platform for the climate integration does not support platform setup. Please remove it from your config.

[mill1000]

Try removing any midea_ac sections from your configuration.yaml. My branch uses the GUI for configuration.

[audreez]

got it working, how/where do i turn on the FP ? usually it needs to be in heat operation and you set the FP preset/mode but i dont see anything in operation or presets

[mill1000]

Ah. I added it as a switch. You should see it on the device page if the unit report supporting it.

It appears I may have misunderstood this function. Would it be better suited as a preset? I see there's a PRESET_AWAY would that be equivalent?

[audreez]

added both of my splits (both support FP) to it but no switch was created, only 2 temp sensors and climate

yes away kind of makes sense

[audreez]

yes them more i think, preset "away" would be great, only available in heat mode as you can not turn on FP in any other mode

[mill1000]

Can you enable logging? Add the following to your YAML.

  default: warning
  logs:
    custom_components.midea_ac: info
    msmart: debug

Then check your home-assistant.log, you may see something like this. Post yours here.

2022-09-10 10:03:53 INFO (MainThread) [custom_components.midea_ac] Querying device capabilities.
2022-09-10 10:03:54 INFO (MainThread) [custom_components.midea_ac.sensor] Setting up sensor platform.
2022-09-10 10:03:55 INFO (MainThread) [custom_components.midea_ac.binary_sensor] Setting up binary sensor platform.
2022-09-10 10:03:55 INFO (MainThread) [custom_components.midea_ac.switch] Setting up switch platform.
2022-09-10 10:03:55 INFO (MainThread) [custom_components.midea_ac.switch] Device does not support freeze protection.
2022-09-10 10:03:55 INFO (MainThread) [custom_components.midea_ac.climate] Setting up climate platform.

You may also see something like

2022-09-10 21:51:33 DEBUG (SyncWorker_0) [msmart.device.AC.command] Supported capabilities: {'eco_mode': False, 'eco_mode_2': True, 'freeze_protection': False, 'heat_mode': False, 'cool_mode': True, 'dry_mode': True, 'auto_mode': True, 'swing_horizontal': False, 'swing_vertical': True, 'nest_check': True, 'nest_need_change': False, 'turbo_heat': False, 'turbo_cool': True, 'fan_speed_control': False, 'cool_min_temperature': 16.0, 'cool_max_temperature': 30.0, 'auto_min_temperature': 16.0, 'auto_max_temperature': 30.0, 'heat_min_temperature': 16.0, 'heat_max_temperature': 30.0, 'decimals': True, 'light_control': True}

which we can confirm FP is supported.

[audreez]

2022-09-10 22:06:50.970 WARNING (MainThread) [custom_components.midea_ac.helpers] Device does not support 'get_capabilities' method. 2022-09-10 22:06:51.085 WARNING (MainThread) [custom_components.midea_ac.helpers] Device does not support 'filter_alert' property. 2022-09-10 22:06:51.725 WARNING (MainThread) [custom_components.midea_ac.helpers] Device does not support 'toggle_display' method. 2022-09-10 22:06:51.727 WARNING (MainThread) [custom_components.midea_ac.helpers] Device does not support 'supports_freeze_protection' property.

[mill1000]

Looks like you're running an older version of msmart. If you're running a docker image, be sure to run the above pip install command within the container.

IF you're running HAOS you can use this extension, https://github.com/hassio-addons/addon-ssh, to access the shell and run pip

[audreez]

i run haos on proxmox, at some point i reinstalled haos and loaded from a backup so msmart was gone haos didnt have pip, i installed python + pip and installed msmart, now i can run midea-discover -i ip_address and it shows all the keys etc, (from ssh terminal addon)

when i restart home assistant log still displays same "not supported" messages any other ideas?

[audreez]

maybe dont require feature check ? jsut add an option:

[audreez]

well deleted everything and reinstalled, still same issue

[mill1000]

i run haos on proxmox, at some point i reinstalled haos and loaded from a backup so msmart was gone haos didnt have pip, i installed python + pip and installed msmart, now i can run midea-discover -i ip_address and it shows all the keys etc, (from ssh terminal addon)

when i restart home assistant log still displays same "not supported" messages any other ideas?

HomeAssistant is still run within a container on HAOS. You most likely weren't inside the container (hence why you had to install Python)

The feature check is there to provide backwards compatibility with older msmart versions. Without it the integration would completely fail.

[audreez]

you are correct, i assumed the ssh addon takes you inside the homeassistnat docker container i was wrong,

anyway i got inside the docker container and installed msmart now i see freeze protection

so the switch does turn on the freeze protection, but it doesn't stay "on" to display status that its actually on and it does not turn it off if i try to toggle it again

[mill1000]

Ok. That's some progress. Were there any log messages when trying to turn off the freeze protection? What model is your unit? I'm trying to understand how FP is used in the app/unit.

[audreez]

no errors in the log FP is used as vacation mode / away mode basically if you are leaving the house for the weekend you turn on heat mode and the FP which basically will keep your house from freezing and will set itself to i think ~46-47F (on regular remote lowest it goes is 62F i believe) on the app itself the heating set point stays the same you just torn on FP and it ignores the setpoint and uses 46F (hard set, non adjustable) as baseline, screen on the mini split also shows FP instead of temperature

here's a pic of the app

[mill1000]

Ok thanks. That's helpful. Is FP mutual exclusive with ECO and Boost?

Can you enable debug logs when trying to turn on and off the FP? Even better if you can capture logs while using the app to toggle FP mode. We should be able to confirm that I'm using the right bits.

  default: warning
  logs:
    msmart: debug

[mill1000]

I made another branch that re-implements FP as an "Away" preset. Make sure to grab the latest msmart branch as well. https://github.com/mill1000/midea-ac-py/tree/feature/fp_away_mode_preset

[audreez]

im goign to setup logs and run some tests, in FP mode i can turn on Boost, but not ECO

so i ran: pip install git+https://github.com/mill1000/midea-msmart.git@feature/freeze_protection --upgrade then: git clone -b feature/fp_away_mode_preset https://github.com/mill1000/midea-ac-py.git then: cp -r midea-ac-py/custom_components/midea_ac/ /config/custom_components/ then restarted

switched are now not working at all (expected) but i don't see an away preset

[audreez]

for the logging, are you looking for these when i turn on/off FP? there is a lot of fluff there just narrowing down on what you need would help

Line 20: 2022-09-14 09:55:35.245 DEBUG (SyncWorker_4) [msmart.device.AC.command] State response payload: c00185667f7f003c800004584b0000000000000000800000
Line 33: 2022-09-14 09:55:50.981 DEBUG (SyncWorker_4) [msmart.device.AC.command] State response payload: c00185667f7f003c800004584b0000000000000000800000
Line 46: 2022-09-14 09:56:08.983 DEBUG (SyncWorker_6) [msmart.device.AC.command] State response payload: c00185667f7f003c800004584b0000000000000000800000
Line 55: 2022-09-14 09:56:20.985 DEBUG (SyncWorker_7) [msmart.device.AC.command] State response payload: c00185667f7f003c800004584b0000000000000000800000
Line 64: 2022-09-14 09:56:35.988 DEBUG (SyncWorker_2) [msmart.device.AC.command] State response payload: c00185667f7f003c800004584b0000000000000000800000
Line 81: 2022-09-14 09:57:05.985 DEBUG (SyncWorker_6) [msmart.device.AC.command] State response payload: c00185667f7f003c800004584b0000000000000000000000
Line 90: 2022-09-14 09:57:20.984 DEBUG (SyncWorker_0) [msmart.device.AC.command] State response payload: c00185667f7f003c800004584b0000000000000000800000
Line 99: 2022-09-14 09:57:35.987 DEBUG (SyncWorker_1) [msmart.device.AC.command] State response payload: c00185667f7f003c800004584b0000000000000000800000
Line 112: 2022-09-14 09:57:53.995 DEBUG (SyncWorker_4) [msmart.device.AC.command] State response payload: c00185667f7f003c800004584a0000000000000000800000

[mill1000]

Could you post the full log? I wonder if the capabilities aren't reporting FP support.

EDIT: Could also be that I'm checking the wrong operation mode when trying to add the Away preset

[audreez]

redacted sens infoa bit and attached midealog.txt

[mill1000]

Thanks. Looks like FP is supported. Could you remove and re-install msmart via pip? I just want to make sure it's using the latest version of that branch and I'm not sure how --upgrade works when installing from git

[audreez]

she werks! it does turn on and off FP on the split

[mill1000]

Awesome! Does it properly detect Away mode if you use the remote to enable it?

[audreez]

i used the app to run in and off (don't us the remote dnt know where it is) and it does detect it both ways

[audreez]

are you going to merge tp main branch or should i keep using your version? also let me buy you a beer!

[mill1000]

I'll merge the FP changes into my "future" branch and create PRs for the main branch as well.