version: 1.0.0
source:
  file: 空调-天幕-氛围灯CAN信号矩阵表.xlsx
  sheet: 氛围灯
scope: normalized_ambient_light_subset
hardware_execution_allowed: false
limitations:
  - Source workbook is partial and omits bus timing, counter, checksum, and variant applicability.
  - Exact RGB control uses the matrix-defined IVI 16.8-million-color request.
messages:
  - name: Ambient_Power_Control_064_02
    frame_id: 100
    minimum_payload_bytes: 8
    fixed_signals: {Sub_ID: 2}
    signals:
      - {name: Sub_ID, start_bit: 0, bit_length: 8}
      - {name: Atomic_atmosphere_light_switch_S, start_bit: 56, bit_length: 2}
  - name: Ambient_Mode_Control_496_04
    frame_id: 1174
    minimum_payload_bytes: 4
    fixed_signals: {Sub_ID: 4}
    signals:
      - {name: Sub_ID, start_bit: 0, bit_length: 8}
      - {name: atmosphere_Light_Request_Command_496_S, start_bit: 27, bit_length: 5}
  - name: Ambient_RGB_Control_32B_2B
    frame_id: 811
    minimum_payload_bytes: 5
    fixed_signals: {Sub_ID: 43}
    signals:
      - {name: Sub_ID, start_bit: 0, bit_length: 8}
      - {name: IVI_1680Atmosphere_Color_R_Setting_S, start_bit: 8, bit_length: 8}
      - {name: IVI_1680Atmosphere_Color_G_Setting_S, start_bit: 16, bit_length: 8}
      - {name: IVI_1680Atmosphere_Color_B_Setting_S, start_bit: 24, bit_length: 8}
      - {name: IVI_1680Atmosphere_Brightness_Setting_S, start_bit: 32, bit_length: 7}
  - name: Ambient_Power_Status_3F3
    frame_id: 1011
    minimum_payload_bytes: 8
    signals:
      - {name: Atmosphere_Light_Switch_Fdback_S, start_bit: 62, bit_length: 2}
  - name: Ambient_RGB_Status_1F1
    frame_id: 497
    minimum_payload_bytes: 48
    signals:
      - {name: LFDoor_Flowing_Ambient_Light_Brightness_S, start_bit: 40, bit_length: 7}
      - {name: Front_Atmspr_Light_Color_R_S, start_bit: 336, bit_length: 8}
      - {name: Front_Atmspr_Light_Color_G_S, start_bit: 344, bit_length: 8}
      - {name: Front_Atmspr_Light_Color_B_S, start_bit: 352, bit_length: 8}
      - {name: Rear_Atmspr_Light_Color_R_S, start_bit: 360, bit_length: 8}
      - {name: Rear_Atmspr_Light_Color_G_S, start_bit: 368, bit_length: 8}
      - {name: Rear_Atmspr_Light_Color_B_S, start_bit: 376, bit_length: 8}