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Tuya MCU update_interval #2603

Open Bl00d-B0b opened 8 months ago

Bl00d-B0b commented 8 months ago

Hello,

I use several MOES thermostat. with original software I use default calibration "-3", but when I install esphome based on wb3s I must increase calibration up to "-7", My Assumption, it's happens, because TUYA MCU receive data every second from serial interface.

When I power off and on after 1 minute it's show me correct temperature, but after sever minutes temperature increase ~+3 degree.

is it possible to implement update_interval to read data from tuya MCU?

Ed

ssieb commented 8 months ago

What do you mean by calibration? esphome doesn't poll it, the MCU sends data when it wants and esphome sends data only when changing a setting.

Bl00d-B0b commented 8 months ago

All MOES thermostat have internal calibration:

image

So, with original firmware I Leave default, and temperature is accurate, but when I install ESPhome, when I need to add additional "-3"... When I power on device temperature accurate, but when I wait 2-3 mins, then it's not accurate and requires calibration, as i mentioned before.

P.S. I have 5 devices at home, same issue.

ssieb commented 8 months ago

Maybe it's the ESP that's causing the heat.

Bl00d-B0b commented 8 months ago

That's is my assumption (I use bk7231t not ESP). But when I use original firmware (tuya cloud connected), then I don't see this behavior. I don't know how often tuya mcu send updates in original firmware. P.S. External nfc sensor shows correct temperature with both firmware's.

ssieb commented 8 months ago

It's not the Tuya MCU. esphome doesn't change how that works. It's more likely the BK CPU if anything. Maybe esphome runs it harder.

Bl00d-B0b commented 8 months ago

Anything ideas how i can troubleshoot this?

P.S. also I notice, that thermostat after several days (1-3) hung, and only hardware power restart help them, soft restart give error initializing tuya mcu...

Ed

Bl00d-B0b commented 8 months ago

Hello,

Looks like the MCU update interval is required feature!!!, I read some whitepapers, and it's not recommended to read temperature sensor every second, then sensor shows wrong temperature, it's not a problem with ESP heat. CPU is quite far away.

Is it possible to implement a possibility to read temperature sensor with timeout option.

And also, another problem still exist even with new firmware. Chip is halt, only power restart helps. looks like need implementation with reset of MCU???

Ed

Bl00d-B0b commented 8 months ago

Hello,

I got another tuya MCU thermostat, which is based on cb3s chip. Successfully use tuya-cloudcutter, and can give help with Datapoints (this one new generation and have calibration values in tuya): Datapoint 1: switch (value: ON) - on/off Datapoint 2: enum (value: 1) - manual/scheduler Datapoint 3: enum (value: 1) - ??? R/O Datapoint 24: int value (value: 205) - Current Temperature R/O Datapoint 36: enum (value: 0) - Heating/Idle R/O Datapoint 101: int value (value: 0) - External Temperature R/O Datapoint 16: int value (value: 210) - Target Temperature Datapoint 18: int value (value: 250) - Max. Set Temp Datapoint 19: int value (value: 250) - Max. Set Temp Datapoint 20: int value (value: 150) - Min. Set Temp Datapoint 26: int value (value: 150) - Min. Set Temp Datapoint 27: int value (value: -5) - Temperature Compensation Datapoint 40: switch (value: OFF) - Lock Datapoint 71: raw - calendar walues Datapoint 102: enum (value: 0) - Int/Ext/Int&Ext Datapoint 103: int value (value: 1) - Deadzone Temperature Datapoint 104: int value (value: 450) - High Temperature Protection Product: '{"p":"l26ggao46s756sno","v":"1.0.0","m":2}'

But still see the same behavior: 1) when original firmware, default temperature calibration is -3, and show correct temperature in the room, but when I install esphome, then i need to setup -6 calibration (as i can see in cb3s chip tuya send info less/minute, compared with wb3s now -6 not -7 (-1 difference looks like because of interval to read, see behavior 3) 2) when power on, device do not receive time via ntp immidiatly, need more time. 3) receiving always messages: Component tuya took a long time for an operation (0.07 s). 4) but this device never hangs yet (3 days)

maybe someone can implement tuya refresh timeout, and I can report my test results. I assume it's not so difficult????

Ed

P.S. if I install kickstart firmware, no problem with calibration, only when you start to use regular firmware and connect to home assistant

ssieb commented 8 months ago

I already told you that the "tuya refresh timeout" isn't a thing.

Bl00d-B0b commented 8 months ago

OK, maybe then it's possible to add a deep_sleep support for bk72xx boards?

Bl00d-B0b commented 7 months ago

I also see the similar behavior on Wi-Fi temperature/humidity sensor on CBU board, they are useless, as a battery live only 1-2 days with esphome., comparing 3 month with original firmware.

Bl00d-B0b commented 7 months ago

Hello,

Still problem exist and not solved. thermostat with Tuya MCU hung (15-30 hours working) and temperature sensor start to show increased temperature +3/+4 degree after working about 15 mins. Original Firmware does not have those issues.

I am assuming, it's because esphome Tuya read ir every 1-2 seconds.

Is it possible to disable and enable tuya mcu or serial interface based on schedule, for example every 1 minute?

Ed