Bootloader

[AtomSoft]

For there VB Application edit the RUN code to:

        Case "Run"
            
            MyButtons = MsgBox("Disabling the bootloader will lock out boot mode. Be sure to have re-entry" & vbCrLf & "code within your firmware to use the bootloader in the future." & vbCrLf & vbCrLf & "Do you want to continue?", vbYesNo, "Disable Bootloader...")
            If MyButtons = vbNo Then   ' User chose Yes.
                Exit Sub   ' Perform some action.
            End If
            
            'GotoRunMode
            ReDim InData(10) As Byte
            
            InData(0) = 9
            InData(1) = 1
            SendGetPacket PicBootS.PortHandle, InData(0), 2, 255, 3
            
            DisconnectDev
            StatusBar1.Panels(PANEL_STATUS).Text = STATUS_RUNMODE_SET

 

[AtomSoft]

This sucks it programs ok and even works with other precompiled hexes which was made for a bootloader. But doesnt work with my own code lol

	#include <P18F2525.INC>	;processor specific variable definitions

		CBLOCK	0x080
		d1
		d2
		d3
		ENDC

		ORG	0x200
		bra	Main		;go to start of main code

		ORG	0x0208
		bra	HighInt		;go to high priority interrupt routine

		ORG	0x0218
		retfie

HighInt:
		retfie	FAST

;******************************************************************************
;Start of main program
; The main program code is placed here.

Main:
	movlw	0x0F
	movwf	ADCON1
	CLRF	TRISB
Loop:
	bcf		LATB,1
	call	Delay
	bsf		LATB,1
	call	Delay
	goto	Loop

Delay
	movlw	0x07
	movwf	d1
	movlw	0x2F
	movwf	d2
	movlw	0x03
	movwf	d3
Delay_0
	decfsz	d1, f
	goto	$+6
	decfsz	d2, f
	goto	$+6
	decfsz	d3, f
	goto	Delay_0
	goto	$+2
	goto	$+2
	goto	$+2
	return

		END

heh had a delay code error only lol everything works now

 

[3v0]

Maybe you recall this from earlier. If so ignore.

The bootloader takes up the first few K of memory so the program code has to start after that. The linker script you use without a boot loader will not work with a boot loader.

 

[AtomSoft]

I got it working in ASM no problem now C is killing me lol. I edited the "c018i.c": (after editing this file i recompiled it with the BATCH file included in MCC18)
FROM:

#pragma code _entry_scn=0x000000
void
_entry (void)
{
_asm goto _startup _endasm

}

TO:

#pragma code _entry_scn=0x000200
void
_entry (void)
{
_asm goto _startup _endasm

}

I edited the linker:

// $Id: 18f2525.lkr,v 1.3 2004/04/26 18:02:17 curtiss Exp $
// File: 18f2525.lkr
// Sample linker script for the PIC18F2525 processor

LIBPATH .

FILES c018i.o
FILES clib.lib
FILES p18f2525.lib

//CODEPAGE   NAME=vectors    START=0x0            END=0x29           PROTECTED
//CODEPAGE   NAME=page       START=0x2A           END=0xBFFF

CODEPAGE   NAME=boot       START=0x0            END=0x1FF          PROTECTED
CODEPAGE   NAME=vectors    START=0x200          END=0x229          PROTECTED
CODEPAGE   NAME=page       START=0x22A          END=0xBFFF
CODEPAGE   NAME=idlocs     START=0x200000       END=0x200007       PROTECTED
CODEPAGE   NAME=config     START=0x300000       END=0x30000D       PROTECTED
CODEPAGE   NAME=devid      START=0x3FFFFE       END=0x3FFFFF       PROTECTED
CODEPAGE   NAME=eedata     START=0xF00000       END=0xF003FF       PROTECTED

ACCESSBANK NAME=accessram  START=0x0            END=0x7F
DATABANK   NAME=gpr0       START=0x80           END=0xFF
DATABANK   NAME=gpr1       START=0x100          END=0x1FF
DATABANK   NAME=gpr2       START=0x200          END=0x2FF
DATABANK   NAME=gpr3       START=0x300          END=0x3FF
DATABANK   NAME=gpr4       START=0x400          END=0x4FF
DATABANK   NAME=gpr5       START=0x500          END=0x5FF
DATABANK   NAME=gpr6       START=0x600          END=0x6FF
DATABANK   NAME=gpr7       START=0x700          END=0x7FF
DATABANK   NAME=gpr8       START=0x800          END=0x8FF
DATABANK   NAME=gpr9       START=0x900          END=0x9FF
DATABANK   NAME=gpr10      START=0xA00          END=0xAFF
DATABANK   NAME=gpr11      START=0xB00          END=0xBFF
DATABANK   NAME=gpr12      START=0xC00          END=0xCFF
DATABANK   NAME=gpr13      START=0xD00          END=0xDFF
DATABANK   NAME=gpr14      START=0xE00          END=0xEFF
DATABANK   NAME=gpr15      START=0xF00          END=0xF7F
ACCESSBANK NAME=accesssfr  START=0xF80          END=0xFFF          PROTECTED

SECTION    NAME=CONFIG     ROM=config

STACK SIZE=0x100 RAM=gpr10

This is my C18 main code:

#include <p18f2525.h>
#include <delays.h>

void main(void){


    TRISB = 0x00;

	while(1){
        LATBbits.LATB1 = 0;
        Delay1KTCYx(200);
        LATBbits.LATB1 = 1;
        Delay1KTCYx(200);        
	}
}

I kept it short and simple since the OSC is already set from bootloader even if not used.

 

[AtomSoft]

This is weird. It programs ok then on Verify it fails(on bootloader program) but when i reset the pic it works with new code just loaded.