Pulse Train generation using the MSP430 ( code issues)

Hey Jens,

Thank you for the reply. I had forgotten to enable the CCIE bit, and i have done so in my main code. However, i'm still unsure whether the logic i'm using is correct or not. Let me just briefly explain it.

Im trying to get the MSP430 to generate a burst at 40 kHz  The length of the burst has to be 14 clock pulses. So what i had planned to do was set the clock to 16 MHz  and set a CCR1 value such that it divides that clock frequency, and in the interrupt toggles the output pin so that the pin generates a square pulse at the required frequency , i.e, 40 kHz. With the code above i had just tried to generate something similar to the above logic. However, if there is a more elegant way of doing it, I would be happy to alter the code.

Thanks

Also, i edited my code as you suggested and it works. Just for reference, here is the edited version - 

#include <msp430.h>

unsigned int i = 0;

int main(void)

{

  WDTCTL = WDTPW + WDTHOLD;                     //Disable Watchdog timer

  P1DIR = 0x01;                                 //Port 1.1 to Output                                

  TA0CCR0 = 1000;                               //Set CCR0

  TA0CCR1 = 500;                                //Set CCR1

  TA0CCTL1 = CCIE;

  TA0CTL = TASSEL_1 + MC_1;                     //ACLK Clock Source, Up mode

  __bis_SR_register(GIE);                       //Interrupt Enable

  while(1);

}

#pragma vector=TIMER0_A1_VECTOR

__interrupt void TIMER0_A1_ISR(void)

{

  i++;

  P1OUT ^= 0x01;

  TA0CCTL1 &= ~CCIFG;

if (i>=14)                                      //14 Pulse Check

{

  TA0CTL = 0x0000;                  //Disable Timer

  P1OUT = 0x00;                        //Output set to low

}

}