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Altera_Forum
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19 years ago

CAN bus module

IIRC Nios II does not provide a CAN bus module by default. What are the choices if you want to add CAN support to your Nios II design? Is it possible to integrate the OpenCores CAN controller to N...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

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originally posted by svhb@Sep 21 2006, 07:54 AM

the opencore version looks quite the same as the sja1000 with respect of the bus interface. but with the 32 bit capability of nios and because all signals are internal the fpga, with little effort you can change the registers a little bit to get faster access. this can be importand to reduce interrupt time ar receiption of messages.

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Yep, unfortunately this is the trade-off I have to live with to avoid Bosch's CAN protocol license.

Markus