RA.4 Open collector,...

[tazntex]

Thanks Gadelhas for the fast reply, I tried to compile using that and I get this error:


@ __CONFIG _XT_OSC & _WDT_OFF & _MCLRE_ON & _LVP_OFF & _CP_OFF
DEFINE OSC 4
CMCON=%00000111
VRCON = 0
PAUSEus 10
TRISA = %00000110
TRISB = %11110001
PORTA = %00000000
PORTB = %00000000
OPTION_REG.7 = 0
OPTION_REG.6 = 0
rf var porta.4

main:
low rf
pause 500
high rf
pause 500
goto main
Error[118]c:\program~1\testled.asm 83 : overwriting previous address contents (2007)

What does this mean?

Many Thanks

[tazntex]

Perhaps I could use the external brown out protection with the 3.3V regulator as shown on the datasheet, I like the Example2 version.

[gadelhas]

Hi;

To not give that error you need to go to the file of your pic model in the PBP directory and comment that line, like this;

;*  16F628A.INC                                                 *
;*                                                              *
;*  By        : Leonard Zerman, Jeff Schmoyer                   *
;*  Notice    : Copyright (c) 2003 microEngineering Labs, Inc.  *
;*              All Rights Reserved                             *
;*  Date      : 11/06/03                                        *
;*  Version   : 2.45                                            *
;*  Notes     :                                                 *
;****************************************************************
        NOLIST
    ifdef PM_USED
        LIST
        include 'M16F62xA.INC'  ; PM header
        device  pic16F628A, xt_osc, wdt_on, mclr_on, lvp_off, protect_off
        XALL
        NOLIST
    else
        LIST
        LIST p = 16F628A, r = dec, w = -302
        INCLUDE "P16F628A.INC"  ; MPASM  Header
        ;__config _XT_OSC & _WDT_ON & _MCLRE_ON & _LVP_OFF & _CP_OFF '- COMENT THIS LINE WITH ";" ATE THE BEGINNING
        NOLIST
    endif
        LIST

[tazntex]

I did see that but just thought that was to easy and I must have been missing something. But I have done what you said and it works.

Thank you very much for your help