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CANBUS using PIC 18F4580

 
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UDIPTA



Joined: 29 Apr 2009
Posts: 13
Location: Kolkata,India

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CANBUS using PIC 18F4580
PostPosted: Wed Apr 29, 2009 3:54 am     Reply with quote
Hello everyone. I want to develop a board using PIC18F4580 with a Transmission oil pressure sensor connected at AN0 and convert the analog value to CANbus signal (extended format) which will be viewed on PowerView Display(CANBUS enabled Display Device). Can anybody say what should be the basic board layout and software code? Plz reply.
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Wed Apr 29, 2009 1:42 pm     Reply with quote
This schematic from the Microchip forum shows the basic CAN bus
connections between two 18F458 chips (18F4580 is similar):
http://www.microchip.com/forums/upfiles.aspx/52252/1E05A177D4B746B0B4C23DB18CC4F360.JPG

CCS Driver files:
Quote:
c:\program files\picc\drivers\can-18f4580.c
c:\program files\picc\drivers\can-18f4580.h


CCS example file:
Quote:
c:\program files\picc\examples\ex_can_ccs_a.c
UDIPTA



Joined: 29 Apr 2009
Posts: 13
Location: Kolkata,India

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PostPosted: Wed Apr 29, 2009 10:18 pm     Reply with quote
Thanks for reply. Can you please send me the program (written in PIC C compiler) using PIC18F458 & MCP2551 which produce CAN signal as output and uses analog signal as input. (Precisely,an analog pressure sensor is connected at PORT AN0.)
PCM programmer



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PostPosted: Wed Apr 29, 2009 10:21 pm     Reply with quote
No, I will not do your project for you. You need to write the code.
UDIPTA



Joined: 29 Apr 2009
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Location: Kolkata,India

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PostPosted: Wed Apr 29, 2009 10:41 pm     Reply with quote
Of course. I myself will write the code. I just want to know how I can convert analog to canbus signal? Is ADC conversion required? Plz help.
PCM programmer



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PostPosted: Thu Apr 30, 2009 1:10 am     Reply with quote
Yes, an A/D conversion is required.
See the Ex_can_ccs_a.c file that I noted above. Also see this post:
http://www.ccsinfo.com/forum/viewtopic.php?t=32168&start=1
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