[Mspgcc-users] 100kHz xtal

[Garst R. Reese]

Hi folks, I have a 100kHz LF xtal drivin ACLK, but the following setup
is giving me pulses spaced 1ms apart. Has anybody had any experience
trying to use a 100kHz xtal instead of the usual 32kHz? It looks like
I'm getting a subharmonic.

Thanks,
  Garst 
void setup_timerA(void)
{
        unsigned temp;

        #ifdef _SHOW_YELLOW_LED_
        /*P1.6 is also connected to the IrDA CD pin*/
        P1SEL |= BV(6);
   P1DIR |= BV(6);

        #endif
        //Assumes ACLK = 100kHz, MCLK = 3.6864MHz

        // set up timer A for 250us SAMPCON to ADC12
        TACTL           = TASSEL_ACLK + MC_UPTO_CCR0;// + ID_DIV8;
        TACCR0  = 25;           //RESET when TAR==CCR0
        TACCR1  = 22;           //SET when TAR==CCR1
        TACCTL1 = OUTMOD_SET_RESET; //Mode 3: set_reset

        /*Start Timer*/
        TACTL |=        TACLR;
        TACTL &= ~TACLR;

}