Advice please - Warning message

[mister_e]

O.K, you have two choices.

1. You rem all _CONFIG lines and set them in your code using the old way... well as i posted before

2. you rem all _CONFIG lines and you past those i posted.. so it should looks like

;****************************************************************
;*  18F2550.INC                                                 *
;*                                                              *
;*  By        : Leonard Zerman, Jeff Schmoyer                   *
;*  Notice    : Copyright (c) 2004 microEngineering Labs, Inc.  *
;*              All Rights Reserved                             *
;*  Date      : 12/31/04                                        *
;*  Version   : 2.46                                            *
;*  Notes     :                                                 *
;****************************************************************
        NOLIST
    ifdef PM_USED
        LIST
        "Error: PM does not support this device.  Use MPASM."
        NOLIST
    else
        LIST
        LIST p = 18F2550, r = dec, w = -230, f = inhx32
        INCLUDE "P18F2550.INC"	; MPASM  Header
        ;__CONFIG    _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
        ;__CONFIG    _CONFIG1H, _FOSC_HS_1H
        ;__CONFIG    _CONFIG2H, _WDT_ON_2H & _WDTPS_128_2H
        ;__CONFIG    _CONFIG3H, _PBADEN_OFF_3H
        ;__CONFIG    _CONFIG4L, _LVP_OFF_4L & _XINST_OFF_4L
        __CONFIG  _CONFIG1L, _CPUDIV_OSC1_PLL2_1L  
        __CONFIG  _CONFIG1H, _FOSC_XT_XT_1H
        __CONFIG  _CONFIG3H, _PBADEN_OFF_3H
        __CONFIG  _CONFIG4L, _LVP_OFF_4L & _XINST_OFF_4L        
        NOLIST
    endif
        LIST
EEPROM_START	EQU	0F00000h
BLOCK_SIZE	EQU	32

About now?

For sure there's no Device line for any 18F device. DEVICE is when you compile with PM, __CONFIG is when you compile with MPASM.

[malc-c]

Ok - I've copied and pasted the code over the original INC file (I did back up the old one first) - and removed the ASM part from the PBP code and it compiled fine.

On the breadboard RB0 is faintly lit and appears to be flickering slightly as I'm only getting +0.85v on RB0 - all other pins are low - also removing the Xtal seems to have no affect on the LED output, which to me would suggest that the timing is still not working ??

Taking pin5 (RA3/AN3/Vref+) takes RB0 low (with or without Xtal present) if that has any bearing on what is happening.

If I get chance I'll try and post a schematic of the basic hardware set up

[mister_e]

Kind of strange behaviour... it's working as suppose here. I suspect a faulty contact or a bad PIC first... well i think ...

[malc-c]

Well I've tried a new Xtal and PIC and I still get the same result, only the LED appears to be more stable (+0.58v)

I'll think I'll give up on this one...

[malc-c]

Just in case it was the application that I was using to program the chip that was the cause, I loaded up the code in Winpic and then varified and read-back the code programmed using PICpgm - It varified and readback without errors. In fact I was able to program your code to a PIC using PICpgm, then read back from that PIC using WinPIC, change to a new PIC and program that from WinPIC, so it would seem that there are no issue with programming the PIC. So the problem is leaning to either coading or hardware, and given your experience and the fact you have it working fine your side of the pond, its a case of "that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?" as Sherlock would of put it.

I'll post up the schematic - just in case there is something I've overlooked.

EDIT:

Schematic uploaded - and tried 0.1uf decoupling capacitor (missed it of the drawing)

[malc-c]

Well I've tried re-breadboarding it on a different breadboard and still the same.

Any suggestions for a different PIC - preferably with 28 pins - internal oscillator and min of one A to D converter for the music input - supported by 2.46 ???

[mister_e]

It's kinda strange but anyways..

PIC18F2525, PIC18F2431, 2320,2220,2620,2680 are some i keep in stock here.

i tried... even removing a Vss pin didn't provide any bad results... ARGH i hate that when it happen

You also added the ADCON1=$0F line too?

When you look at the config fuse in your DeviceProgrammer software... is LVP & DEBUG are set to off as well?

The worst.. there's no revealant stuff multiplexed with PORTB.0 pin if ADCON1=$0F line is there OR if the PBADEN_OFF fuse is correctly programmed.. DAMN!