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USB Bootloader header

 
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PICoHolic



Joined: 04 Jan 2005
Posts: 215

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USB Bootloader header
PostPosted: Thu Nov 13, 2008 2:55 am     Reply with quote

Hey,

Here is a modified USB bootloader header file compatible with the Microchip USB HID bootloader that can be found in the USB framework (to be downloaded from http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2680&dDocName=en537044 ). A PC software is also included.

Just include this H file into your project. It sets the reset address and the ISR.


Code:

///////////////////////////////////////////////////////////////////////////
////                     USB_BOOTLOADER.H                              ////
////                                                                   ////
////                                                                   ////
///////////////////////////////////////////////////////////////////////////
//how big is the bootloader?
//the bootloader will reside from address 0x0000 to this location.  the
//application will then sit at this location+1 to the end of program memory.
#define LOADER_SIZE                 (0xFFF)
#define LOADER_START                (0)
#define LOADER_END                  (LOADER_SIZE)
#define APPLICATION_START           (LOADER_SIZE+1)
#define APPLICATION_END             (getenv("PROGRAM_MEMORY")-1)
#define APPLICATION_ISR             (APPLICATION_START+8)

#ifndef _bootloader
 //in the application, this moves the reset and isr vector out of the bootload
 //space.  it then reserves the loader space from being used by the application.
 #build(reset=APPLICATION_START, interrupt=APPLICATION_ISR)
 #org 0, LOADER_END {}
#endif


Enjoy... Wink
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