Standalone SMG control

[cosmo]

Hi,
I'm interested in controlling my M3 SMG transmission with a standalone CAN controller, essentially emulating the smg control part of the MSS54.
I have the SMG in a test setup in the garage. I'm not too insterested in emulating the full auto modes, but would love to be able to shift (+clutch control if necessary).
How much of the shift process is controlled by the ECU vs TCU? Is the ECU controlling clutch engagement too or is it only requesting gears, and the TCU is doing the rest?

Thank you

[cosmo]

Does anyone have a recording of the SMG can bus? That would be a great starting point. Thank you

[liam821]

ProEFI offers a plus and play ecu for the e46m3 with SMG. It's the only aftermarket solution I know of.

[SliM3]

Signal exchanges via SMG CAN bus:
Engine Speed
Engine Coolant Temp
Engine Oil Temp
Intake Air Temp
PWG
EDR Feedback Pots
Wheel Speed
Transverse Acceleration
Steering Angle
Cruise Status
Parking Brake
Door Contacts
Brake Light Switch
Key Memory

SMG II Controller Inputs:
MFL (multi-function steering wheel, shift paddles)
Shift lever
DRIVELOGIC
Longitudinal Acceleration
General Module
Clutch Position
Shift Position
Gearbox RPM
Hydraulic Pressure
Temperature Sensors
Hood Contacts
Engine Speed

SMG II Controller Outputs:
Shift Lock Mechanism
EWS
Hydraulic Unit


DME controls the shift sequence and regulates torque.