Need help with config

[Darrenmac]

I am trying to set up internal asc and MCLr options in the config of my code for a 16f688. The data sheet has the config bits for all of this on page 100. Is there an easy way of setting this? I tried config=%11001111000100 nut this did not work. I got a syntax error. The posts that I have read seem to set each function in the config individualy. Can some one point me in the right direction.
Thanks

[Rob]

Hi,

I may have mis-understood your post but if you're just trying to set the configuration bits try:

for PM Assembler:

@ device INT_OSC, MCLR_OFF

Is this what you're after?

Kind regards

Rob

[Archangel]

Hi Darrenmac,
see this thread for configs.
http://www.picbasic.co.uk/forum/showthread.php?t=543

[Rob]

Hi Darrenmac,
see this thread for configs.
http://www.picbasic.co.uk/forum/showthread.php?t=543

Yeah, that's a good thread - should've posted a link to it myself!

[Darrenmac]

I have read the suggested post again. All examples in this post appear to set each option in the config seperatly, ie pic type, mclr, pwrt as seperate comands but the datasheet for the 16f688 shows a config register called 11.1 (page 100) with each option as seperate bits either set or cleared. Can I just send this as a binary string (or hex equivelent)? if so how?

[Archangel]

Can I just send this as a binary string (or hex equivelent)? if so how?

It never worked that way for me, every newbie reads that and tries it,(I did) and it has never worked that I heard of. You can string the commands together though, like so:

@ __config _INTRC_OSC_NOCLKOUT & _WDT_ON & _PWRTE_ON & _MCLRE_OFF & _BODEN_ON & _LVP_OFF & _CP_ALL & _DATA_CP_ON

The data sheet shows you what happens in those registers, but you can access them only at program time and require you to use the proper syntax as shown in Melanies post.

[Darrenmac]

Ok that clears that up a bit. I guess its more reading and experementing. Thanks

[Darrenmac]

I have tried some of the examples in the suggested post but I get compile errors.
Here are some of what I have tried

@ CONFIG FOSC = HS
opcode expected instead of config

ASM
CONFIG OSCS=OFF ; Oscillator switch OFF
ENDASM
Same error

@ __CONFIG _CONFIG1H, _OSCS_OFF_1H & _HS_OSC_1H
Same error

I am using Picbasicpro with microcode studios

[Melanie]

Looks like you're still stuck...

I need some information... are you using Microchip's MPASM or MeLab's PM as the Assembler? or don't you know?

If you don't know, then I'll have to install MicroCode Studio which I don't ever use and see what the default's are when trying to compile for this chip.

Oh, finally, what version of PBP are you running?

[Darrenmac]

I thought that MElabs PBP was the compiler. I have ver 2.5.

[Acetronics2]

IF you use MPASM as assembler,

The Config. fuses ***NAMES*** FOR THE '688 are:

( do not care of the EQU H" xxxx" )

;==========================================================================
;
;       Configuration Bits
;
;==========================================================================

_FCMEN_ON                    EQU     H'3FFF'
_FCMEN_OFF                   EQU     H'37FF'
_IESO_ON                     EQU     H'3FFF'
_IESO_OFF                    EQU     H'3BFF'
_BOD_ON                      EQU     H'3FFF'
_BOD_NSLEEP                  EQU     H'3EFF'
_BOD_SBODEN                  EQU     H'3DFF'
_BOD_OFF                     EQU     H'3CFF'
_CPD_ON                      EQU     H'3F7F'
_CPD_OFF                     EQU     H'3FFF'
_CP_ON                       EQU     H'3FBF'
_CP_OFF                      EQU     H'3FFF'
_MCLRE_ON                    EQU     H'3FFF'
_MCLRE_OFF                   EQU     H'3FDF'
_PWRTE_OFF                   EQU     H'3FFF'
_PWRTE_ON                    EQU     H'3FEF'
_WDT_ON                      EQU     H'3FFF'
_WDT_OFF                     EQU     H'3FF7'
_LP_OSC                      EQU     H'3FF8'
_XT_OSC                      EQU     H'3FF9'
_HS_OSC                      EQU     H'3FFA'
_EC_OSC                      EQU     H'3FFB'
_INTRC_OSC_NOCLKOUT          EQU     H'3FFC'
_INTRC_OSC_CLKOUT            EQU     H'3FFD'
_EXTRC_OSC_NOCLKOUT          EQU     H'3FFE'
_EXTRC_OSC_CLKOUT            EQU     H'3FFF'
_INTOSCIO                    EQU     H'3FFC'
_INTOSC                      EQU     H'3FFD'
_EXTRCIO                     EQU     H'3FFE'
_EXTRC                       EQU     H'3FFF'

IF Using PM assembler they are :

					; *** DEVICE Fuses Definitions
EXTRC		equ	3FF80007h       ; XX XXXX XXXX X111
EXTRC_OSC_CLKOUT equ    3FF80007h       ; XX XXXX XXXX X111
EXTRCIO		equ	3FF80006h       ; XX XXXX XXXX X110
EXTRC_OSC_NOCLKOUT equ  3FF80006h       ; XX XXXX XXXX X110
EXTRC_OSC       equ     3FF80006h       ; XX XXXX XXXX X110
INTOSC		equ	3FF80005h       ; XX XXXX XXXX X101
INTRC_OSC_CLKOUT equ    3FF80005h       ; XX XXXX XXXX X101
INTOSCIO	equ	3FF80004h       ; XX XXXX XXXX X100
INTRC_OSC_NOCLKOUT equ  3FF80004h       ; XX XXXX XXXX X100
INTRC_OSC       equ     3FF80004h       ; XX XXXX XXXX X100
EC_OSC          equ     3FF80003h       ; XX XXXX XXXX X011
HS_OSC          equ     3FF80002h       ; XX XXXX XXXX X010
XT_OSC          equ     3FF80001h       ; XX XXXX XXXX X001
LP_OSC          equ     3FF80000h       ; XX XXXX XXXX X000
WDT_ON          equ     3FF70008h       ; XX XXXX XXXX 1XXX
WDT_OFF         equ     3FF70000h       ; XX XXXX XXXX 0XXX
PWRT_OFF        equ     3FEF0010h       ; XX XXXX XXX1 XXXX
PWRT_ON         equ     3FEF0000h       ; XX XXXX XXX0 XXXX
MCLR_ON         equ     3FDF0020h       ; XX XXXX XX1X XXXX
MCLR_OFF        equ     3FDF0000h       ; XX XXXX XX0X XXXX
PROTECT_ON      equ     3FBF0000h       ; XX XXXX X0XX XXXX
PROTECT_OFF     equ     3FBF0040h       ; XX XXXX X1XX XXXX
CPD_ON          equ     3F7F0000h       ; XX XXXX 0XXX XXXX
CPD_OFF         equ     3F7F0080h       ; XX XXXX 1XXX XXXX
BOD_ON          equ     3CFF0300h       ; XX XX11 XXXX XXXX
BOD_NSLEEP      equ     3CFF0200h       ; XX XX10 XXXX XXXX
BOD_SBODEN      equ     3CFF0100h       ; XX XX01 XXXX XXXX
BOD_OFF         equ     3CFF0000h       ; XX XX00 XXXX XXXX
IESO_ON         equ     3BFF0400h       ; XX X1XX XXXX XXXX
IESO_OFF        equ     3BFF0000h       ; XX X0XX XXXX XXXX
FCMEN_ON        equ     37FF0800h       ; XX 1XXX XXXX XXXX
FCMEN_OFF       equ     37FF0000h       ; XX 0XXX XXXX XXXX

These sets of fuse NAMES are particular to the Pic you use ...

SO ...

THIS

@ __CONFIG _CONFIG1H, _OSCS_OFF_1H & _HS_OSC_1H

doesn't mean ANYTHING with a 16F688 ...

Capito ???

Alain

[Darrenmac]

Does this need to be in assembler or in straight basic

[Archangel]

Hi Darrenmac,
Microcode Studio defaults to using the PM assembler, to use MPASM you have to tell it to, here is how: 1.start micro code studio 2. click on the word VIEW at the very top left. 3. Click on Compile and Program Options, and it will open a box which has at it's top, 3 tabs, notice on the first tab an empty box which says use PBL, but do not put a check there, click the center tab marked assembler. You will see an empty box marked: USE MPASM. Put a check mark there and close the box. You are now using MPASM as the assembler.
JS

[Darrenmac]

So do I use
@ MCLR_OFF
or
MCLR_OFF

[Rob]

So do I use
@ MCLR_OFF
or
MCLR_OFF

Hi Darrenmac,

If you have not changed your settings as per Joe S's last post then you are using the PM assembler as this is what Microcode Studio defaults to. In this case see Post#2 in this thread.

If you have changed your settings as per Joe's last post then you need to use:

@ __CONFIG _INTOSC & _MCLRE_OFF

Cheers

Rob

[Archangel]

Hi Darrenmac,
Now after you do all this you will get a compile error telling you you are overwriting the configs . . . that's because you are. In your PBP directory you will have many files with the suffix .inc and the filename will be the number of your PIC. Open it and you will see the following code:

__config _INTRC_OSC_NOCLKOUT & _WDT_ON & _MCLRE_ON & _CP_OFF

just put a semi colon at the beginning like this:

;__config _INTRC_OSC_NOCLKOUT & _WDT_ON & _MCLRE_ON & _CP_OFF

save the file and then no more error. This config is the " DEFAULT" config setting in case you forget to put in any config so your program will still work sometimes.<br>
Now, why go through all of this? Well suppose you DO NOT want to use the internal oscillator? The DEFAULT configs will not work with a crystal or resonator or EXT oscillator, so do it now and get used to setting the fuses early into your adventure into PIC Magic

[Darrenmac]

Still having issues, I think that I am going to be better off by setting them in the programmer. At least I can get it to work. Thanks for every one who has tried to help

[nomad]

Setting them in the programmer works. but if you ever want to just program a chip from a saved hex file, your going to get bit in the behind if you don't remember what settings you used in the programmer. its really a two step operation. PBP is the basic compiler, it creates an assembler file. then either pm or msasm compiler assembles that into your hex file that gets programmed into the chip. the fuse names/settings are written into your basic program but are dependant upon which assembler you use. The assembler is what uses these config commands. PBP passes these to the assembler with the @. so your line would be either

 @_config MCLR OFF

or

 @_config MCLRE OFF

depending on if pm or msasm is used.

[nomad]

thats actually

 @_config _MCLR_OFF

or

 @_config MCLRE_OFF

the hs osc you were trying should be

@_config _HS_OSC

or

@_config HS_OSC

someone please check my writing, i can't see the _'s during preview on here. (not at home and using my phone lol)