CANbus

[inse]

Another point to check just came into my mind:
The PIC you are using has internal PLL - did you check its configuration?

[zx81sp]

Another point to check just came into my mind:
The PIC you are using has internal PLL - did you check its configuration?

Not sure if this is what you ask for, but I've checked the programmer options, OSC is setting to HS, there is a option for HS w/PLL on but it's not enabled.

Can you verify the BRG values?

[inse]

Hmm...
I got $03 $BF $07 for 20MHz and 100kbps from the calculator.

Furthermore, your CIOCON configuration differs from the one I suggested, try setting it to $20.
Another idea: I am not sure whether you have to set the DLC register in config mode or if normal mode is possible..

[zx81sp]

Hmm...
I calculated $03 $BF $07 for 20MHz and 100kbps

Yes, in my previous post you can see that I've tried also with that values with no luck I'm really frustrated

[inse]

For anyone willing to dig into the CAN-bus I conclude this thread:

ZX81SP finally got his code running - it was a matter of oscillator configuration.
I have listed the necessary steps for setting up CAN above - except that the CAN Bit timing calculator is available from www.intrepidcs.com, not from Microchip.

[Christopher4187]

This is about the only useful thread I've found regarding CAN communication. This is way above my level of expertise but I was never one to give up. My objective is to communicate with a locomotive that uses CAN communication.

Can anyone tell me if I use the same PIC and code above, will it allow me to transmit data on the CAN network? I realize my configurations will probably be different but what about the RX side of the CAN? Will it be easier than the transmit?

[inse]

Christopher,
it's hard to give sensible answers as you supply no details about the project.
Do you know what the communication is going to look like?
If you are going to setup a bidirectional communication a CAN analyzer will be a very useful tool.

Ingo