Stupid question

[Meriachee]

Hi folks,

I've got a 12f675 with a very simple piece of code to flash 2 leds. It won't start. THere's power, it programs fine and everything appears to be fine - except.

Do I need to put some kind of define at the top to tell it specifically to not use MCLR?
This is what I've got at the top:

@ device pic12F675,intrc_osc_noclkout,wdt_off,mclr_off,prot ect_off

CMCON = 7
ANSEL = 0

The compile fails at the define.

It's something dumb, it always is......
Gary

[Ioannis]

May be it is the space at the prot ect_off

Ioannis

[mister_e]

What error message do you have?

Warning[207]: Found label after column 1. (device)
Error[122] : Illegal opcode (pic12F675)

if so, you need to change your syntax to use MPASM one.

this should be something like..

    @ __CONFIG _INTRC_OSC_NOCLKOUT & _WDT_OFF & _MCLRE_OFF & _CP_OFF

Further reference : http://www.picbasic.co.uk/forum/showthread.php?t=543

[Meriachee]

No errors when compiling. It looks as if the chip isn't starting. Help? (Also, this forum changes Caps. Makes the code look like the variables are whacked....

@ device pic12F675,intrc_osc_noclkout,wdt_off,mclr_off,prot ect_off

'Output variables and port assignment.
Output GPIO.1
Led1 var GPIO.1
low led1

output GPIO.2
Led2 var GPIO.2
low led2

pause 50

loop:
high led1
pause 500
low led1
pause 100
high led2
pause 500
low led2
pause 100

goto loop

end

[mackrackit]

To each their own, but I have better luck modifying the *.inc file for the configs.

One thing I do not see is "DEFINE OSC 4" at the top of your code. If it is there then this is a good reason to use the CODE brackets and post your whole code.

Try this

DEFINE OSC 4

ANSEL=%00000000
CMCON=7

LOOP:

HIGH GPIO.2
PAUSE 100
LOW GPIO.2
PAUSE 100

GOTO LOOP

When you have a problem like this go basic.. no variables, one piece of hardware and so on.

This is my 12F675.inc set up

 NOLIST
    ifdef PM_USED
        LIST
        include 'M12F675.INC'	; PM header
        device  pic12F675, intrc_osc, wdt_on, pwrt_on, mclr_on, protect_off
        XALL
        NOLIST
    else
        LIST
        LIST p = 12F675, r = dec, w = -302
        INCLUDE "P12F675.INC"	; MPASM  Header
        __config _INTRC_OSC_NOCLKOUT & _WDT_ON & _PWRTE_ON & _MCLRE_OFF & _CP_OFF
        NOLIST
    endif
        LIST

Are you using PM or MPASM?

[Meriachee]

Dave,

I have tried both assemblers. I had things working just fine on another PC, and since I've re-installed, nothing seems to work, even opening any of the other files for completed projects. When I put in lines like:
device pic12F675, intrc_osc, wdt_on, pwrt_on, mclr_on, protect_off
I get errors, "cannot overwrite" and other strange things, like it doesn't like the comma or the space. I will try your suggestion this evening and see where that leads.

Gary

[mackrackit]

Hi folks,

I've got a 12f675 with a very simple piece of code to flash 2 leds. It won't start. THere's power, it programs fine and everything appears to be fine - except.

Do I need to put some kind of define at the top to tell it specifically to not use MCLR?
This is what I've got at the top:

@ device pic12F675,intrc_osc_noclkout,wdt_off,mclr_off,prot ect_off

CMCON = 7
ANSEL = 0

The compile fails at the define.

It's something dumb, it always is......
Gary

At least it compiles now.

Awhile back someone had a similar problem. After 40 post the problem was solved - bad port on computer. http://www.picbasic.co.uk/forum/showthread.php?t=6160

Being that everything worked on one machine but not another and the simple test did not work, I think I would now look at the machine.