Shimano support #7

bg443 commented 2026年02月28日 18:08:38 +01:00

No description provided.

bg443 commented 2026年02月28日 18:17:45 +01:00

Passkey

Supports 6 digit passkeys with digits 0-9 - official app says that it must not start with a 0

Implementation

Passkey is UTF8 encoded

Examples:
000000 -> 0x30 0x30 0x30 0x30 0x30 0x30
123456 -> 0x31 0x32 0x33 0x34 0x35 0x36

Read operation: 0x2af8
Write operation: 0x2af8

0x2af8 is 0x00002af85348494d414e4f5f424c4500

### Passkey Supports 6 digit passkeys with digits 0-9 - official app says that it must not start with a 0 #### Implementation Passkey is UTF8 encoded Examples: `000000` -> `0x30 0x30 0x30 0x30 0x30 0x30` `123456` -> `0x31 0x32 0x33 0x34 0x35 0x36` Read operation: `0x2af8` Write operation: `0x2af8` `0x2af8` is `0x00002af85348494d414e4f5f424c4500`

bg443 commented 2026年03月01日 17:13:11 +01:00

Cycle computer screens

Implementation (Read)

Trigger (tx): 0x00 0x13 0x05 0x0c 0x00 to 0x2afa

Response: 0x33 0x05 0x0e 0x97 0x00 0x00 0x00 0x26 0x2a 0xff where 0x97 is the current value for the enabled computer screens

0x2afa is 0x00002afa5348494d414e4f5f424c4500

Implementation (Write)

Removing "travelling time" from the screen: 0x00 0x13 0x05 0x08 0x96
Adding "travelling time" to the screen: 0x00 0x13 0x05 0x08 0x97

Bit masking

0x96 is a bit-masked field (i.e. 10010110 and each bit represents a screen on the computer)
0x97 is 10010111

The three 0 bits that are staying 0 are likely to be the always on screens that can't be changed (total distance, travelling distance, and range)

Bit mask values

Hex	Binary	Value
0x97	10010111	All enabled
0x96	10010110	Travelling time disabled
0x95	10010101	Average speed disabled
0x93	10010011	Maximum speed disabled
0x87	10000111	Cadence disabled
0x17	00010111	Current time disabled

Wireshark

Support added to dissector in this commit

### Cycle computer screens #### Implementation (Read) Trigger (tx): `0x00 0x13 0x05 0x0c 0x00` to `0x2afa` Response: `0x33 0x05 0x0e 0x97 0x00 0x00 0x00 0x26 0x2a 0xff` where `0x97` is the current value for the enabled computer screens `0x2afa` is `0x00002afa5348494d414e4f5f424c4500` #### Implementation (Write) Removing "travelling time" from the screen: `0x00 0x13 0x05 0x08 0x96` Adding "travelling time" to the screen: `0x00 0x13 0x05 0x08 0x97` #### Bit masking `0x96` is a bit-masked field (i.e. `10010110` and each bit represents a screen on the computer) `0x97` is `10010111` The three `0` bits that are staying `0` are likely to be the always on screens that can't be changed (total distance, travelling distance, and range) ###### Bit mask values | Hex | Binary | Value | |----------|----------------|---------------------------------| | `0x97` | `10010111` | All enabled | | `0x96` | `10010110` | Travelling time disabled | | `0x95` | `10010101` | Average speed disabled | | `0x93` | `10010011` | Maximum speed disabled | | `0x87` | `10000111` | Cadence disabled | | `0x17` | `00010111` | Current time disabled | #### Wireshark Support added to dissector in [this commit](https://codeberg.org/bg443/emtb-dissectors/commit/859ef9a332059c208053851aa4a11db5bce7c855)