Havells Glamax 9W B22 WiFi LED RGB CCT Bulb

Device Info

• Name: Havells Glamax 9W B22 WiFi LED RGB CCT Bulb
• Chip: CB2L
• MCU: BK7231N

Shorting of CEN was not required to enter flashing mode in this case as it was already in flashing mode.

For how to flash with ltchiptool refer to guide of homemate 4 node touch switch as the procedure is same.

ESPHome Configuration

bk72xx:
  board: cb2l

substitutions:
  name: havells-rgb-cct-bulb
  friendly_name: Havells Bulb 

esphome:
  name: ${name}
  friendly_name: ${friendly_name}


wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

captive_portal:

# The BP5758D Driver Configuration
bp5758d:
  data_pin: P7
  clock_pin: P6

output:
  - platform: bp5758d
    id: output_red
    channel: 3
    current: 40

  - platform: bp5758d
    id: output_green
    channel: 2
    current: 40

  - platform: bp5758d
    id: output_blue
    channel: 1
    current: 40

  - platform: bp5758d
    id: output_cold_white
    channel: 5
    current: 30

  - platform: bp5758d
    id: output_warm_white
    channel: 4
    current: 30

light:
  - platform: rgbww
    name: "Light"
    restore_mode: RESTORE_DEFAULT_ON
    
    red: output_red
    green: output_green
    blue: output_blue
    cold_white: output_cold_white
    warm_white: output_warm_white
    
    # Color Temperature configuration
    # Tuya bulbs usually default to 2700K-6500K range
    cold_white_color_temperature: 6500 K
    warm_white_color_temperature: 2700 K
    
    # "color_interlock" prevents RGB and White from being on at the same time.
    # Set to 'false' if you want to mix RGB + White (if the bulb hardware handles the heat).
    color_interlock: true

The esphome config was generated using ai so if there can be any improvements please contribute. The json obtanined from the device's binary firmware is as below:

{
 "Jsonver": "1.0.0",
 "bleonoff": 1,
 "brightmax": 80,
 "brightmin": 10,
 "cagt": 20,
 "category": "0505",
 "cmod": "rgbcw",
 "colormax": 40,
 "colormin": 10,
 "colorpfun": 0,
 "crc": 95,
 "cwmaxp": 100,
 "cwtype": 0,
 "dccur": 30,
 "defbright": 100,
 "defcolor": "c",
 "deftemp": 100,
 "dmod": 6,
 "drgbcur": 40,
 "dwcur": 30,
 "gmkb": 60,
 "gmkg": 60,
 "gmkr": 65,
 "gmwb": 75,
 "gmwg": 70,
 "gmwr": 100,
 "iicb": 0,
 "iicc": 4,
 "iicg": 1,
 "iicr": 2,
 "iicscl": 6,
 "iicsda": 7,
 "iicw": 3,
 "mixway": 0,
 "module": "CB2L",
 "notdisturb": 1,
 "onoffmode": 0,
 "pairt": 18,
 "pmemory": 1,
 "prodagain": 0,
 "remdmode": 1,
 "rgbt": 10,
 "rstbr": 50,
 "rstcor": "c",
 "rstnum": 5,
 "rsttemp": 100,
 "title20": 0,
 "wfcfg": "spcl_auto",
 "wfct": 3,
 "wt": 20
}