MSP 430g2553 PWM in up/down mode

Dear

I am getting unwanted pwm in the output with following codes. please advise.

#include "msp430G2553.h"
#include <stdint.h>

unsigned int const pwm[10]={0, 31, 59, 81, 95, 100, 95, 81, 59, 31};
unsigned int index=0;

void main( void )
{
WDTCTL = (WDTPW | WDTHOLD);

BCSCTL1 = CALBC1_16MHZ;
DCOCTL = CALDCO_16MHZ;

P1SEL = 0x40;
P1DIR = 0x40;

TA0CCR0 = (125 - 1);
TA0CCR1 = 0;
TA0CCTL1 = OUTMOD_6;
TA0CTL = (TASSEL_2 | ID_0 | MC_3 | TACLR | TAIE);

_BIS_SR( GIE );

while( 1 );
}

// Timer0 A1 interrupt service routine
#pragma vector = TIMER0_A1_VECTOR
__interrupt void Timer0_A1_ISR( void )
{
static int duty = 0;
TA0CTL &= ~TAIFG;
if (index < 10)
{
duty = pwm[index];
index++;
}
else
{
duty = pwm[0];
index = 1;
}
TA0CCR1 = duty;
}

Sun,

OCY already linked in your other thread about the same topic - please use only one. There is already information in it that people will not see when now continuing the thread here. So please use your other one:

Dennis