Description:

This is a project to write a library/driver for Embedded Micro Software's CANPORT. The CANPORT is a parallel port CAN adapter that can be purchased for $100 or built using their provided schematics for less. It uses an Intel 82527 CAN interface with a Phillips 82C250 taking care of the physical layer..

Downloads:

• 2/25/2002: linux canport library v0.4 (3 kb tarball) - Source code to produce a linkable library to use with user space code. The library includes low level routines for accessing the registers and higher level functions for common tasks. A sample program is provided to demonstrate a few functions. Documentation will be added in a future release.

Documentation:

• Intel 82527 CAN interface
  • Architectural Overview (688kb pdf)
  • Datasheet (228kb pdf)
  
  
• Phillips 82C250 CAN physical layer
  • Datasheet (228kb pdf)
  
  
• Phillips 74HC541N Octal buffer/line driver
  • Datasheet (56kb pdf)
  
  
• Embedded Micro Software's CANPORT
  • User Guide (264kb doc)
  • Wiring Schematic (16kb gif)
  
  
• Notes
  • Parallel Port Registers and Pinouts
  • Parallel Port to CANPORT physical connection

Links:

• Embedded Micro Software's web site
• EMS's CANPORT specific page
• Interfacing with the IBM-PC Parallel Port