Altera_Forum
Honored Contributor
Honored ContributorIP for CAN
Has anybody advice for that?
Forum Discussion
10 Replies
Altera_ForumOn OpenCores website (http://www.opencores.org/) you find an open source IP core for CAN controller.
Beware that CAN is a proprietary technology by Bosch and you should get a licence from them in order to integrate the core in your fpga for production. Regards- Altera_Forum
Thanks you for your response.
I am a newby so How can I add this IP in my system? Throgouth SOpcBuilder or how? Regards - Altera_Forum
Most of the cores on the Opencores website use a wishbone interface, so you'll have to write your own glue code to adapt them to the Avalon bus used in SOPC builder.
- Altera_Forum
Thank for the advice already.
So this is like the Interface between Wisbone and Avalon ? Do you have any advice or example for Glue code ? I have never did it before. - Altera_Forum
That CAN IP Opencore can also be configured for a standard 8 bit asynchronous memory interface; so you can possibly connect it to your system through the sopc tristate bus, if you don't have strong performance needs.
Cris - Altera_Forum
No !
tri states are only available for outside connectivity not inside the fpga between modules. a tristate is done by using an output buffer and controlling its output enable input. - Altera_Forum--- Quote Start --- tri states are only available for outside connectivity not inside the fpga between modules. a tristate is done by using an output buffer and controlling its output enable input. --- Quote End --- I don't know how Quartus actually synthesizes the sopc tristate bus. I believe this is not a true tristate. If I connect it to another inside-fpga module it works perfectly. I've already done it successfully both with OpenCore CAN module and with other IP cores exposing an AMI. Cris
- Altera_Forum
I saw a wishbone<->avalon bridge example code on this website two weeks ago.
I do not have a link right now. but if you search it you will find it. - Altera_Forum
Here is the link:
http://www.alteraforum.com/forum/showthread.php?t=2238 - Altera_Forum
Hi,
you can also find some informations about connecting Wishbone <-> Avalon on wiki! http://en.wikipedia.org/wiki/wishbone_%28computer_bus%29
