aca esta 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.
//#if defined(__DEBUG)
#define LOADER_SIZE (0x1FFF)
//#else
//#define LOADER_SIZE (0x17FF)
//#endif
//the loader and application need a common flag that determines if we are in
//the bootloader or application, that way the ISR knows where to go. this
//is the location in ram that is reserved for this flag.
#define LOC_IN_LOADER_FLAG 0x25
//// --- end configuration --- ////////////////////////////////////////////
#reserve LOC_IN_LOADER_FLAG
int8 g_InBootloader;
#locate g_InBootloader=LOC_IN_LOADER_FLAG
#define LOADER_START (0)
#define LOADER_END (LOADER_SIZE)
#define APPLICATION_START (LOADER_SIZE+1)
#if defined(__USB_87J50__)
#define APPLICATION_END (getenv("PROGRAM_MEMORY")-9) //configuration bits
#else
#define APPLICATION_END (getenv("PROGRAM_MEMORY")-1)
#endif
#define APPLICATION_ISR (APPLICATION_START+8)
#ifdef _bootloader
/*
Provide an empty application, so if you load this .HEX file into the pic
without an application this will prevent the pic from executing unknown code.
*/
#org APPLICATION_START,APPLICATION_START+0xF
void BlankApplication(void)
{
while(TRUE);
}
//we need to prevent the loader from using application space
#if (APPLICATION_END > 0x10000)
#org APPLICATION_START+0x10, 0xFFFF {}
#if (APPLICATION_END > 0x20000)
#org 0x10000, 0x1FFFF {}
#org 0x20000, APPLICATION_END {}
#else
#org 0x10000, APPLICATION_END {}
#endif
#else
#org APPLICATION_START+0x10, APPLICATION_END {}
#endif
#define USB_CONFIG_PID 0x0034
#define USB_STRINGS_OVERWRITTEN
#endif //_bootloader
#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
