Testing

Windows USB Device Driver

On Windows, a driver is required to use the CAN translator’s USB interface. A driver is available in the conf/windows-driver folder. The driver supports both 32- and 64-bit Windows. The driver is generated using the libusb-win32 project.

Python Library

The OpenXC Python library, in particular the openxc-dashboard tool, is useful for testing the CAN translator with a regular computer, to verify the data received from a vehicle before introducing an Android device. Documentation for this tool (and the list of required dependencies) is available on the OpenXC vehicle interface testing page.

Emulator

The repository includes a rudimentary CAN bus emulator:

$ make clean
$ make emulator

The emulator generates fakes values for many OpenXC signals and sends them over USB as if it were plugged into a live CAN bus.

Test Suite

The non-embedded platform specific code in this repository includes a unit test suite. It’s a good idea to run the test suite before committing any changes to the git repository.

Dependencies

The test suite uses the check library.

Ubuntu

$ sudo apt-get install check

OS X

Install Homebrew, then check:

$ brew install check

Arch Linux

$ sudo pacman -S check

Running the Suite

cantranslator/src $ make clean && make test -s

Debugging information

Viewing Debugging data

To view debugging information, first compile the firmware with the debugging flag:

$ make clean
$ DEBUG=1 make
$ make flash

When compiled with DEBUG=1, two things happen:

  • Debug symbols are available in the .elf file generated in the build directory.
  • Log messages will be output over a UART port (no hardware flow control is required) - see supported platforms for details.

View this output using an FTDI cable and any of the many available serial terminal monitoring programs, e.g. screen, minicom, etc.

Table Of Contents

Previous topic

Building from Source

Next topic

Bootloaders

This Page