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Bootloader DATA EEPROM

 
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treitmey



Joined: 23 Jan 2004
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Bootloader DATA EEPROM
PostPosted: Mon Sep 14, 2009 1:43 pm     Reply with quote
18F452 @ 18.432MHz ccs 3.249
I have an application that stores the current language in data EEPROM.
addr=0xf00000
Code:
#rom int8 0xf00000={HARD_MAJOR...

now after the bootloader is run and new application is loaded, the language
changes.

Is the bootloader not updating the data EEPROM? Is it corrupting it?

Also can the main application and bootloader be compiled into 1 image.

I want arrow electronics to write these chips,... but also have the ability to bootload new code into them if the need arises.

Thanks
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Mon Sep 14, 2009 1:56 pm     Reply with quote
Does your bootloader (firmware, inside your PIC) look for the data
eeprom address in the Hex file that is sent to the PIC ? Then does it
use the method described in the Data EEPROM section of the data
sheet to write to eeprom ?

My guess is, probably not.
treitmey



Joined: 23 Jan 2004
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PostPosted: Mon Sep 14, 2009 2:08 pm     Reply with quote
right, right,...
deja vu all over again.

I hate it when I fix the same thing twice.
Grep to the rescue!
treitmey



Joined: 23 Jan 2004
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PostPosted: Mon Sep 14, 2009 2:43 pm     Reply with quote
Got that working.
Any thoughts on compiling both together?
It looks like bootloader calls Application()

Would I just rename my Main() --> to application() ??
PCM programmer



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PostPosted: Mon Sep 14, 2009 3:08 pm     Reply with quote
This thread suggests using the #import statement.
http://www.ccsinfo.com/forum/viewtopic.php?t=38730
treitmey



Joined: 23 Jan 2004
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PostPosted: Mon Sep 14, 2009 4:00 pm     Reply with quote
Thanks
FvM



Joined: 27 Aug 2008
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PostPosted: Mon Sep 14, 2009 4:39 pm     Reply with quote
Using #import to build a production image is also suggested in EX_USB_BOOTLOADER.C
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