For now I can't do that -- no crystals where I'm at, and this board is =20
not setup for a crystal anyway.  It's a custom board I was using to =20
develop another app.

Cheers,
-Neil.


Quoting Andre Abelian <abelian.andre@yahoo.com>:

> Neil,
>
> just to test add external crystal and turn off internal also turn  =20
> off brawn out
> reset.
> see what happens.
>
> AA
>
>
>
>
> ________________________________
> From: PICdude <picdude3@narwani.org>
> To: piclist@MIT.EDU
> Sent: Mon, June 6, 2011 8:52:55 AM
> Subject: [PIC] C issue
>
> Decided to (finally) tinker with C programming this weekend, and using
> the default install of Hi-Tech C (Lite) that came with MPLAB 8.66.
>
> I created a basic piece of code to turn on some LED's (multiplexed
> discrete and 7-segment) on an existing board I have, and it takes a
> LONG time to start up -- in the order of several minutes, if at all.
> One a couple occasions it worked right away.  So I'm guessing the
> oscillator is not starting up properly...?
>
> I also tried setting the config bits from the Config Bits menu rather
> than the code and it worked (code ran immediately on programming) the
> first time, but I can't reproduce that any more.
>
> Also tried explicitly turning on Vdd and releasing from reset, but no
> difference.  And the board works perfectly with assembly code.
>
> What am I missing here?  For reference, this is the code I'm using  =20
> (16F883)...
>
>
>
> #include <pic.h>
>
> __CONFIG(1, FOSC_INTRC_NOCLKOUT & DEBUG_OFF & WDTE_OFF & LVP_OFF &
> BOR_ON & CP_OFF & CPD_OFF & FCMEN_ON & IESO_ON & MCLRE_OFF & PWRTE_ON);
> __CONFIG(2, BOR4V_BOR40V & WRT_OFF);
>
> #define FOSC 8000000L            /* 8 Mhz internal clock */
>
> void main(void)
> {
>     INTCON =3D 0;
>
>     OSCCON =3D 0x71;                /* 8 Mhz internal clock */
>
>     TRISA =3D 0b00001011;
>     TRISB =3D 0b11100000;
>     TRISC =3D 0b00000000;            /* PORTC is all outputs */
>
>     ANSEL =3D 0b00000011;            /* RA0,1 are analog inputs */
>     ANSELH =3D 0;
>     ADCON1 =3D 0b00010000;        /* Left justified, External Vref+ */
>
>     OPTION_REG =3D 0;                /* Port-B pullups active */
>     WPUB =3D 0b01100000;
>
>     VRCON =3D 0;                    /* Turn off */
>     T1CON =3D 0;
>     CM1CON0 =3D 0;
>     CM2CON0 =3D 0;
>     CM2CON0 =3D 0x02;                /* Turn off comparators */
>
>     PORTA =3D 0b11111111;            /* Turn on all columns */
>     PORTB =3D 0b11111111;            /* Turn on all rows */
>     PORTC =3D 0b10101010;            /* Turn on all rows */
>
> /* TODO -- testing... just stop here for now */
>     for    (;;)
>     {
>     }
> }
>
>
> Cheers,
> -Neil.
>
>
>
>
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