| Updates | |
| Initial release for FW 5.05 and FW 0.08 |
Disclaimer:
By
using the information on this page you can render your device
inoperable, damage your ECU, it might even explode or whatnot .. !
It is your own responsibility if use this information and I take no liability for your actions !
It is your own responsibility if use this information and I take no liability for your actions
Preface:
This
site focuses on how to access the instrument cluster via CAN bus via
the built in (firmware release dependend) functions as well as the
hardware/software layout of the device
in order to write own software for it. This site only deals with the
instrument cluster made by PI Shurlok, it does not descibe the original
Stack made instrument.
Motivation:
To
enable the RTC (Real Time Clock) functionality on the MY09 model
device. Hardware is present, but firmware is not supporting the RTC.
This can either be fixed with an offical firmware upgrade that supports the MY09 hardware (if such exists), or by writing a custom firmware.
For that reversing the API used to upgrade firmware was nessecary. A lot of other stuff has been discovered next to that.
This can either be fixed with an offical firmware upgrade that supports the MY09 hardware (if such exists), or by writing a custom firmware.
For that reversing the API used to upgrade firmware was nessecary. A lot of other stuff has been discovered next to that.
Supported Devices:
Functionality has currently been tested with the following devices:
MY09 - Lotus P/N: A121N6001F (kph) - Firmware V0.08
MY11 - Lotus P/N/: A121N007F (mph) - Firmware V5.05
Hardware PCB layout is different however a compatible CPU and similiar/same peripherials are used.
Firmware versions differ in functionalty (e.g. no clock on 0.08, however the needed hardware is present !)
MY09 - Lotus P/N: A121N6001F (kph) - Firmware V0.08
MY11 - Lotus P/N/: A121N007F (mph) - Firmware V5.05
Hardware PCB layout is different however a compatible CPU and similiar/same peripherials are used.
Firmware versions differ in functionalty (e.g. no clock on 0.08, however the needed hardware is present !)
KPH vs. MPH:
Except
the gauge background scale there seems to be only a difference in
software, flashing a mph software in a kph device and vice versa should
be no problem. For V5.05 the information if its kph/mph is stored in
the device's EEPROM so its even the same firmware thats used.
This could be true for the V0.08 firmware as well however the right EEPROM flag has not been discovered yet.
This could be true for the V0.08 firmware as well however the right EEPROM flag has not been discovered yet.
Documents:
- Hardware Components - MY09 - MY11
- CAN Bus API - MY11
- EEPROM Layout - MY11
- BDM Interface Howto
- Firmware Tool (soon)
- Custom Firmware (soon)
Contact: