Do you have the watchdog timer disabled?


Jim =


-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of=
 Tom=E1s =D3 h=C9ilidhe
Sent: Friday, August 22, 2008 11:09 AM
To: Microcontroller discussion list - Public.
Subject: [PIC] Where's the interrupt coming from?


I've got 7 independent push buttons on my board. They are connected to B0, =
B1, B2, B3, B4, B5 and D6.

When a push button is pressed, it provides a path to ground.

B0 through B5 are floating when they are not pressed; the idea here was to =
use the 887's internal pull-up's, but I can't get them to work.

Another problem I'm having is that the microcontroller keeps resetting if B=
3 is left floating, but I don't understand why because I've got all interru=
pts disabled.

Here's my config code:

__CONFIG(FCMDIS & IESODIS & BORDIS & UNPROTECT & MCLRDIS & PWRTEN & WDTDIS =
& INTIO);

And here's my start-up code:

void StartupConfig(void)
{
    ANSEL =3D 0;  /* Turn off Analog-to-Digital */

    INTCON =3D 0;   //Disable all interrupts
    CM1CON0 =3D 0; //Comparators off
    CM2CON0 =3D 0; //Comparators off

    WPUB =3D 0b00111111;  /* Individually set pull-up's for Port B */
    IOCB =3D 0b00000000; /* Disable interrupts for Port B */

    OPTION &=3D ~0b10000000u;   /* Turn on pull-up's for Port B */
}

Anyone know what I'm doing wrong?

(I sent a post about this 5 hours ago but it never showed up)

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