BMBT 0xf0 → GT 0x3b
This is only applicable to vehicles equipped with BMBT.
This command is seemingly to support the service mode functions of the BMBT (0xf0).
The message exchange format appears to mirror that of the D-Bus. i.e. the replies are 'stateful', thus the meaning of the reply must be inferred from the request.
F0 04 3B 06 00 C9
F0 04 3B 06 18 D1
F0 04 3B 06 3C F5
F0 04 3B 06 FF 36
F0 06 3B 06 FF 0D FE C7
F0 13 3B 06 86 91 33 87 43 00 31 10 22 01 17 42 00 00 00 00 69
The message length will vary depending on use case.
Note: the meaning of the data is inferred from the preceding request (0x05). See Use Cases for detailed parameter mapping.
| Parameter | Index | Length | Type |
|---|---|---|---|
| Data | 0 |
-1 |
Various |
When the user (first) opens the 'Set' menu, the GT will (lazily) request the current brightness value from the BMBT.
3B 05 F0 05 40 01 8A # Request brightness
F0 04 3B 06 18 D1 # Reply brightness
The brightness value is used to set the current brightness value on the slider UI.
The MK4 uses following brightness steps:
F0 04 3B 06 FF 36 # "Min"
F0 04 3B 06 EC 25
F0 04 3B 05 E0 CS
F0 04 3B 05 D4 CS
F0 04 3B 05 C8 CS
F0 04 3B 05 BC CS
F0 04 3B 06 B0 79
F0 04 3B 05 A4 CS
F0 04 3B 06 98 51
F0 04 3B 06 8C 45
F0 04 3B 06 80 49
F0 04 3B 06 0C C5
F0 04 3B 06 18 D1
F0 04 3B 06 24 ED
F0 04 3B 05 3C CS
F0 04 3B 06 3C F5
F0 04 3B 05 48 CS
F0 04 3B 05 54 CS
F0 04 3B 06 60 A9
F0 04 3B 06 6C A5
F0 04 3B 06 7F B6 # "Max"
Version reply appears similar (if not identical?) to a diagnostic ident.
| Property | Index | Length | Type | INPA Property |
|---|---|---|---|---|
| BMW Part Number | 0 |
4 |
BCD | BMW Part Number |
| HW level | 4 |
1 |
BCD | Hardware Number |
| Encoding index | 5 |
1 |
BCD | Coding Index |
| DIAG index | 6 |
1 |
BCD | Diagnostic Index |
| BUS index | 7 |
1 |
BCD | Bus Index |
| Date of Manufacture | 8 |
2 |
BCD | Date of Manufacture |
| Supplier | 10 |
1 |
BCD | Supplier |
| SW Level | 11 |
1 |
BCD | Software No. |
| TBC | 12 |
4 |
-- | TBC |
# GT requests BMBT version data
3B 04 F0 05 00 CA
# BMBT replies with version (ident) data
F0 13 3B 06 86 91 33 87 43 00 31 10 22 01 17 42 00 00 00 00 69
| Property | BMW Part No. | HW No. | CI | DI | BI | Month/Year | Sup. | SW No. |
|---|---|---|---|---|---|---|---|---|
| Data | 86 91 33 87 |
43 |
00 |
31 |
10 |
22 01 |
17 |
42 |
| Parameter | Index | Length | Type |
|---|---|---|---|
| Key | 0 |
1 |
Map |
| OBM increm. sensor | 1 |
1 |
Integer |
| Radio increment sens | 2 |
1 |
Integer |
All values are sent each time, irrespective of which property is being updated.
# GT requests BMBT start key function diagnostic
3B 05 F0 05 0B 01 C1
# BMBT replies with function initial values
F0 06 3B 06 FF 00 00 34
The key function ends after a timeout period, at which point the functions menu is displayed again. This is accompanied by the following message:
F0 04 3B 06 00 C9 # BMBT Key function timeout
# Key
# Note: no 'hold' or 'release' states
# Note: different button IDs to button commands
KEY_NONE = 0xFF # Default value when no button is pressed
KEY_INFO_LEFT = 0x01
KEY_INFO_RIGHT = 0x02
KEY_DISC_1 = 0x03
KEY_DISC_4 = 0x04
KEY_DISC_2 = 0x05
KEY_DISC_5 = 0x06
KEY_DISC_3 = 0x07
KEY_DISC_6 = 0x08
KEY_FM = 0x09
KEY_AM = 0x10
KEY_MODE = 0x11
KEY_OVERLAY = 0x12
KEY_DIAL_VOL = 0x13
KEY_EJECT = 0x14
KEY_TEL = 0x16
KEY_TAPE_SWITCH = 0x17
KEY_AUX = 0x18
KEY_TONE = 0x19
KEY_SELECT = 0x20
KEY_BACK = 0x21
KEY_FORWARD = 0x22
KEY_MENU_LEFT = 0x23
KEY_MENU_RIGHT = 0x24
KEY_DIAL_NAV = 0x25
# OBM increm. sensor (Navigation Dial)
# Value just increases/decreases with a right/left turn of the dial.
# Turning the dial quickly will cause the value to jump.
# Radio increment sens (Volume Dial)
# As per navigation dial test.
# GT requests BMBT current 'contrast' value
# Note: if value has already been loaded via Set menu.. then there's no request!
3B 05 F0 05 40 01 8A
# BMBT replies with current 'constast' value which is displayed via UI
3B 06 F0 05 41 01 98 10 # Example: -2