http://ecomodder.com/forum/showthread.php/interest-can-obd-2-support-cougar-15649-2.html
He Says..
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This project contains multiple subsystems for implementing a custom automotive network using CAN bus, including OBD2 and status reporting, and converting CAN bus reported parameter into gauge or screen outputs.
The code supports multiple popular microcontrollers in the Atmel AVR and STMicro STM32 family, and common CAN bus controllers.
The STM32 directory contains code for the STM32F100 series microcontrollers. It has device support for both the MCP2515 SPI CAN controller and the bxCAN controller built into the f103, f105 and f107 processors.
The AVR directory contains code for the ATMEGA AVR series of microcontrollers. It had tested device support for the MCP2515 SPI CAN controller, and preliminary (nominally complete but unverified) support for the built-in CAN controller on the AT90CAN32/64/128 microcontrollers.
The Cougar directory contains add-on code for the Cougar EV motor controller firmware. It is designed to be added onto the existing firmware source code. It branched from a November 2010 version of the system and has fewer features in order to minimize the program space taken on the Cougar controller's ATMEGA8-16U processor. Notably it reports only current values and does not log faults.
This code started as the firmware of our 'QAR' EV motor