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beginner for Can bus using MCP2551

 
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HGHK



Joined: 29 Jun 2010
Posts: 33

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beginner for Can bus using MCP2551
PostPosted: Fri Apr 12, 2013 12:34 pm     Reply with quote
I have school project that I must connect PICs by CAN bus. I have not so much source about can bus. Please help me.
As I search I must use MCP2551 to connect to CAN L&H line. So I have PIC16F877A, PIC18F452 & PIC18F458. For example in PIC18F452 I must use can-18xxx8.c.
So I don't know how I must use it to communication and if I use it is it need to connect with MCP2515 to MCP2551. What about other PICs ?
Is it a training about it?

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PCM programmer



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PostPosted: Fri Apr 12, 2013 1:00 pm     Reply with quote
Quote:
For example in PIC18F452 I must use can-18xxx8.c.

That is not correct. 18F452 does not have a built-in CAN bus module.
The can-18xxx8.c file will not work with 18F452.

For PICs that do not have a built-in CAN bus module, you must use
an external CAN bus chip, such as MCP2515.

It's easier if you use PICs with a built-in CAN bus module, such as
18F458, or 18F4580, etc. Then you only need to add the MCP2551
transceiver chip.
jgschmidt



Joined: 03 Dec 2008
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PostPosted: Sun Apr 14, 2013 10:04 am     Reply with quote
At the bottom of this page you will find a number of resources for CAN:

http://www.jgscraft.com/microchip.php

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