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PIC bootloader

 
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Giorgi
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PIC bootloader
PostPosted: Thu May 25, 2006 5:07 am     Reply with quote
I have developed a CAN bootloader for the PIC18F448. It works fine, and now I want to use it for a PIC18F4580. But it doesn't seem to work...
I have laoded just the application with the reset and interrupt vectors reallocated, but it doesn't work either. Could it be that the #build does not work the same way with this device?

The following code is what I use for reallocating the code and leaving free space for the bootloader:

Code:

#define LOADER_END 0x3FF
#define LOADER_SIZE 0x2FF

#build (reset=LOADER_END+2, interrupt=LOADER_END+8)
#org 0, LOADER_END{}
ckielstra



Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands

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PostPosted: Thu May 25, 2006 5:36 am     Reply with quote
You don't give us enough information to build an exact copy of your situation, please post a short but complete program and mention your compiler version.

Quote:
I have laoded just the application with the reset and interrupt vectors reallocated, but it doesn't work either.
Is that all you did? With just the relocated vectors it will not work. You need some code (the bootloader) at the original reset and interrupt addresses to jump to your relocated vectors.
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