Presetting Configuration Fuses (PIC Defines) into your Program

[Bruce]

_INTIO2_OSC_1H would set it for internal osc with OSC1 & OSC2 pins free to use for I/O.

Look in the P18F1220.INC file in your MPLAB directory for a list of config options.

To select 8MHz internal, look in the 18F1220 data sheet in the Oscillator Configurations
section. It shows the value to write to OSCCON to select various frequencies.

When programming the PIC with the ICD, in inserts a debug kernel, so you may need to
configure the ICD as the programmer before burning the PIC for stand-alone operation.

With the ICD debug kernel programmed into the PIC it needs the PC interface to operate.

[wbubel]

Joe S. and Bruce
Thanks for your valuable help. Sorry its been a while since I've been able to get back to this project. Here is the status. I have set the CONFIG1H fuse to
_INTIO2_OSC_1H as Bruce suggested and OSCCON = %01110000.
I set the ICD as a programmer. When I released the PIC from Reset it runs so slow I thought it was not working. Either I screwed up the OSCCON settings or there is something I am missing.


OSCCON = %01110000 'Define the Osc to 8 MHz
LED2 var PORTB.2 ' LED
cntr var word
FET var PORTA.0
TRISA = %00000000 ' Set PORTA ports 0-4 to input, 5-7 Output
TRISB = %00000000 ' Set PORTB to all output
PORTB = %00000100 ' Clear PORTB
PORTA = %00000000 ' Clear PORTA

cntr = 0
FET = 0

Main:
led2 = 1
pause 100
led2 = 0
pause 100
' cntr = cntr + 1
' if (cntr <= 2) then goto main
' FET = 1
goto main
Stop

Can anyone Help me.

[Archangel]

I set the ICD as a programmer. When I released the PIC from Reset it runs so slow I thought it was not working. Either I screwed up the OSCCON settings or there is something I am missing.

You should compile NOT using ICD COMPILE, use the one which says compile, only use ICD compile to use the ICD, recompile with the COMPILE for stand alone use. Put a
DEFINE OSC 4
or whatever number is right in you code near the top. The PIC is probably running using the fail safe oscillator .

[wbubel]

This piece of code made it work

DEFINE OSC 4 'Define the Osc to 8 MHz

asm
bsf OSCCON, SCS1 ; 1x = Internal Block
bcf OSCCON, SCS0 ; 00 = Primary Oscillator (20Mhz?)
bsf OSCCON, IRCF2 ; 111=8000 110=4000 101=2000
bsf OSCCON, IRCF1 ; 100=1000 011=0500 010=0250
bcf OSCCON, IRCF0 ; 001=0125 000=0032
MSTABLE010 btfss OSCCON, IOFS
bra MSTABLE010 ; wait until Oscillator is stable
endasm

[boroko]

This doesn't directly apply to your situation this time, but I did run into a sneaky change the other day that took me a while to notice..
I was trying to change the oscillator config on a 18F1320. I had been recently using 18F1330s and just assumed they would be the same since they were so close family wise. Bad assumption. Here are the two together.

;****************************************************************
;*  18F1330.INC                                                 *
;*                                                              *
;*  By        : Leonard Zerman, Jeff Schmoyer                   *
;*  Notice    : Copyright (c) 2006 microEngineering Labs, Inc.  *
;*              All Rights Reserved                             *
;*  Date      : 06/05/06                                        *
;*  Version   : 2.47                                            *
;*  Notes     :                                                 *
;****************************************************************
        NOLIST
    ifdef PM_USED
        LIST
        "Error: PM does not support this device.  Use MPASM."
        NOLIST
    else
        LIST
        LIST p = 18F1330, r = dec, w = -311, w = -230, f = inhx32
        INCLUDE "P18F1330.INC"  ; MPASM  Header
        __CONFIG    _CONFIG1H, _OSC_INTIO2_1H 
       ; __CONFIG    _CONFIG1H, _OSC_XT_1H
        __CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_512_2H
        __CONFIG    _CONFIG4L, _XINST_OFF_4L
        NOLIST
    endif
        LIST
EEPROM_START	EQU	0F00000h
BLOCK_SIZE	EQU	8

'==============================================================================
'==============================================================================

;****************************************************************
;*  18F1320.INC                                                 *
;*                                                              *
;*  By        : Leonard Zerman, Jeff Schmoyer                   *
;*  Notice    : Copyright (c) 2006 microEngineering Labs, Inc.  *
;*              All Rights Reserved                             *
;*  Date      : 06/05/06                                        *
;*  Version   : 2.47                                            *
;*  Notes     :                                                 *
;****************************************************************
        NOLIST
    ifdef PM_USED
        LIST
        "Error: PM does not support this device.  Use MPASM."
        NOLIST
    else
        LIST
        LIST p = 18F1320, r = dec, w = -311, w = -230, f = inhx32
        INCLUDE "P18F1320.INC"  ; MPASM  Header
        __CONFIG    _CONFIG1H, _INTIO2_OSC_1H    ; this for INT OSC 
    ;   __CONFIG    _CONFIG1H, _XT_OSC_1H	 ;was this for XT OSC
        __CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_512_2H
        __CONFIG    _CONFIG4L, _LVP_OFF_4L
        NOLIST
    endif
        LIST
EEPROM_START	EQU	0F00000h
BLOCK_SIZE	EQU	8

the commented out part was my addition, but notice the different syntax for the oscillator statement.
Just hadn't run into that before.
Bo

[boroko]

Hi all,

I have tried to find where the @MyConfig references were without any success. Anyone have them bookmarked?
I still don't have a good handle on changing these without tweaking the .inc files and I'm afraid that's going to bite me someday (even though I do leave the original lines REM'd).

I have seen @MyConfig used, but don't know if there are any caveats.

Thanks
Bo

[Archangel]

Hi Bo,
@__Config MyConfig was something Darrel came up with for me, so as to be able to put the config statements on several lines. This was so I could see them without having to scroll across some 100 or so places on the screen. I have MCS set up with large fonts as I have rather poor vision. You still have to comment out the default configs and place the correct configs in your code. It simply allows you to put them on multiple lines. Search for my posts and you will find examples of it's use. If you need examples I can post some Saturday after my new cable internet connection get's hooked up, until then I am not at home while in here.
JS