Xiaomi Mi Robot Vacuum V1 - Fan Speed Issue

[mat4444]

Describe the bug
This bug report is copied from home-assistant/core#43196
With the Xiaomi Mi Robot Vacuum V1 running on FW 3.5.8_004018, the fan speed options (Silent, Standard, Medium, Turbo and Gentle) are not understood by the vacuum.
However, from Home Assistant, fan speed can be set with the set_fan_speed service using the following integer values:
Silent --> 38
Standard --> 60
Medium --> 75
Turbo --> 100
Gentle --> Not an option for this vacuum

Version information (please complete the following information):

• Platform: Raspberry Pi 3B+
• OS: Running on HomeAssistant 0.117.6 (HassOS 4.15)
• python-miio: version 0.5.3

Device information:

• Model: Xiaomi Mi Robot Vacuum V1 (rockrobo.vacuum.v1)
• Hardware version: Linux ?
• Firmware version: 3.5.8_004018
  (PS: the command line in your bug report template misses 'info' at the end of miiocli device --ip <ip address> --token <token>)

To Reproduce
Using Home Assistant, I try to change the fan speed of my vacuum (v1) using the built-in options (drop down list), but it does not work. Nothing happens, there is no acknowledgment nor error message.

However, I can use the set_fan_speed service with integer values to change the speed.

Expected behavior
The vacuum speed should be changeable by default, using the default options.

Console output
No error in Home Assistant log

[rytilahti]

So the issue is, that since 3.5.7 for the v1 changed the behavior in regards of fan speed, see home-assistant/core#32723 and issues linked there (and in the fix pr). python-miio was adapted to check for the specific versions when v1 is detected (#643).

The logic is shown at https://github.com/rytilahti/python-miio/blob/master/miio/vacuum.py#L499 but I have no idea how to fix this without breaking anything. There are open questions like was the 100-105 format only temporary for the 3.5.7 series for v1, and could we remove the version detection?

For a quick fix, if you are not using the cloud functionality, simply block its internet access and it will start using the legacy speeds :-)

[mat4444]

Hello,
Thank you for your reply.
I am probably missing something obvious, but I don't see why adding a FW check against version 3.5.8 would be a breaking change? It only requires creating a new fanspeedV3 class with the new values. It won't affect people who still have a vacuum with FW version 3.5.7.
Regarding the cloud functionality, how can I simply block the internet access? Is it an option in xiaomi home app, or should it be done at the router level?

[syssi]

On router level.

[rytilahti]

Hi, so the question is, is it only the firmware version 3.5.7 that has this different (100-105) fan speed setting, that is, can we use the v1 values on 3.5.8 (https://github.com/rytilahti/python-miio/blob/master/miio/vacuum.py#L55), or do we need a separate v3 for 3.5.8+?

Also, did you get the values by changing the speed using the official app? They are only slightly off from the v1 values, so if those are the new official ones, maybe we indeed need a v3 mapping for that.

[mat4444]

Hi, it seems that fan speed values on firmware 3.5.8 are different from the V1 and V2 values. We would need a V3 set of values.
I got these values using the official Xiaomi app and checking the status of the vacuum in Home Assistant:
Silent = 38
Standard = 60
Turbo = 75
Max =100
They are indeed different from the V1 values

[raxpa]

Hi there I have the same issue in the v1 version is there any solution?

[rytilahti]

@mat4444 just to clarify the situation, the newer firmware versions only accept specific values (instead of percentages) as previously? So using set_fan_speed on homeassistant works fine with 38 (for silent), but trying to set it to 10 won't work?

If so, a PR to add this new set of speeds for those newer firmware versions would be appreciated!

[mat4444]

@rytilahti, yes, the new firmware only accept the specific values I mentioned above. A percentage value like 10 does not work.
I have created a branch for these minors modifications, but I have no idea how to test it on my system before creating the PR.
I am almost sure it would work, but better checking first. Can you please indicate me how to check it ?
Thanks

[rytilahti]

Okay, so here's the place where the available fan speeds are decided:

python-miio/miio/vacuum.py

Line 499 in f481a9e

if info.model == ROCKROBO_V1:

The best way to try it out is to execute miiocli -d vacuum --ip 192.168.xxx.xxx --token xxxxxx fan_speed_presets & adding unit tests for the fan speed detection for the following cases:

• Unable to query (fallback to old v1 values)
• v1 & firmware version == 3.5.7 = v2 enum
• v1 & firmware version > 3.5.7 = this would be a new enum with those fixed values

[mat4444]

I am not sure how to use the "fan_speed_presets" option with your command line tool. It only accepts integers.
Anyway, I have tested the updated code directly in HA by replacing the vacuum.py code and it works.
I have create PR #893 but it does not pass two checks. Would you mind having a look at it ?
Thanks!

[rytilahti]

Here's how it works on my vacuum:

$ miiocli vacuum --ip 192.168.xx.xx --token xxx fan_speed_presets
Running command fan_speed_presets
{'Silent': 38, 'Standard': 60, 'Medium': 77, 'Turbo': 90}

For the linting error, simply run pre-commit run -a in the directory to fix the issues and commit the changed files, then it should pass the CI checks, too!

[mat4444]

Sorry, but that's beyond my github knowledge. I don't know where to run the 'pre-commit run -a' command. Should it be done locally on my PC ? Or can it be run directly on Github ?
Sorry if it's a very dumb question, but I have very little knowledge of Github