Help with DSPIC33 and ECAN

a.mills · Joined: 31 Jan 2014 Posts: 1 Location: Massachusetts

Hi all,

I'm having trouble setting up a CAN bus using the DSPIC33F. I've read the documentation provided by Microchip, but their example code assumes a different compiler and is only marginally helpful.

I'm aware that CCS has a CAN library for other micros, and have found the can-dspic30.h and can-pic24.h libraries, but is there one available for the dsPIC33F?

Also, the help menu says that these libraries are only for use with the MCP2515 CAN interface chip, which I am not using.

I guess what I'm getting at is am I going to have to set up my own library to accomplish this, or is there an easier/quicker way?

Thank you for reading, and for any help you can provide.

A

newguy · Joined: 24 Jun 2004 Posts: 1907

Use "can-PIC24.c" as a starting point but be wary of the CCS functions because most of them don't work on PCD (or at least they didn't as of 4.141). I did a lot of CAN enabled projects using PIC18 devices and the CCS drivers/functions worked great, but all that came to a screeching halt when I migrated to a dsPIC33FJ256GP710A. I had to basically do it all from scratch - setting up filters, CAN speed, sending & receiving messages, etc, by directly manipulating registers.

Sorry, can't share the code as it's propietary.