CANBUS4LINUX

CANBUS4LINUX is a modular canbus driver for linux. The current driver package supports a CAN dongle from ELEKTOR magazine June/2000 and a CAN dongle from CAN200 project. Both are connected to bidirectional parallelports (bidirectional, epp or ecp).
The driver is splitted into at least 2 parts: canbuscore and a hardwaredriver - or in 3 parts (as currently implemented): canbuscore, chipset driver (sja1000) and a hardwaredriver. If a new hardware with sja1000 or 82c200 is added, only the hardware specific driver = register access must be written. For other chipsets the next layer must be rewritten too.

Tools

For test purposes there are several programms included in the driver package. In subdirectory console there are some small programms for read and write data on CAN bus. In subdirectory gtk is a small GTK programm.
With GCAN you get my favourite test tool. To use GCAN, you need glade, libglade and gtk 1.2. Below is a screendump of GCAN, click on the thumbnail to enlarge it.

Features

- interrupt driven
- should work with kernel 2.2.16 or newer (tested with 2.4.0)
- support CAN200 card and elektor CAN card (both for the parallelport) other cards can easily added with mini driver
- support CAN 2.0A and 2.0B (PeliCAN) of SJA1000 chip
- support /proc filesystem (/proc/canbus/...)
- parameter can be controlled by: IOCTL's and /proc filesystem
- read and write is implemented
- support poll and fsync (only experimental)
- support fasync
- time stamp in all events
- a virtual CAN bus is simulated, if several applications uses the same CAN channel
- the two drivers for the ELEKTOR CAN CARD and the CAN200 CAN CARD uses the parport driver
- the chipset driver (SJA1000.O) calculates the BTR registers

Project Links:

Project on Sourceforge
Download

Links:

Elektor
CAN200 project