Unable to control RGB and white independently with Tuya smart bulb

Configuration
1

I have a Tuya smart bulb that has separate RGB and white LEDs and within the Tuya app I was able to operate the color and white independently to give cool white, warm white, etc. I flashed the bulb with Tasmota and now that functionality has disappeared. If I choose a color within Home Assistant the white LEDs are switched off and and only the RGB LEDs are functional. If I choose white I am only able to dim it and not able to add color. My Tasmota module configuration is:

  • Defined as Module Type “Generic”
  • Define GPIO14 ® as PWM1
  • Define GPIO012 (G) as PWM2
  • Define, GPIO13 (B) as PWM3
  • Define GPIO04 (W) as PWM4

It is connected as MQTT to mosquitto broker.

Should my module configuration be different?

2

Nobody can know. There are a lot of tuya bulbs out there, all with different configurations. Without knowing what brand/model it is impossible to tell.

3

The Tuya bulb I have is branded as Fcmila. You can find it here.

The wifi chip is ESP8266EX
There is a SLM211A LED driver that uses PWM directly from the MCU
The flash memory is a 1MB GigaDevice GD25Q80

I detailed my teardown and Tasmota flashing here along with showing the pinouts.

That should be the info that is needed.