CCS/MSP430G2553: msp430 and servo

msp430programmer1990

Part Number: MSP430G2553

Tool/software: Code Composer Studio

Hello I have to make this servo work with the msp430 to start and stop with the onboard push button and also lit the red led to display a stop and green to display it start . I start the code but keep getting errors in the interrupts. Can someone please tell what's wrong

Here the code

#include<msp430.h> int cnt; int main (void)

{ WDTCTL = WDTPW + WDTHOLD;

P1DIR &= ~BIT3; P1REN |= BIT3;

P1OUT |= BIT3;

P1DIR |= BIT0 + BIT6;

P1OUT |= BIT6;

P1OUT &= ~BIT0; P1DIR |= BIT2;

P1SEL |= BIT2; P1SEL2 &= ~BIT2; P1DIR |= BIT2;

P1SEL |= BIT2; P1SEL2 &= ~BIT2;

TA0CTL = MC_1 + TASSEL_2;

TA0CCTL1 = OUTMOD_6;

TA0CCR0 = 20000;

TA0CCR1 = 2000; TA1CTL = MC_1 + TASSEL_2;

TA1CCTL0 = CCIE;

TA1CCR0 = 3000; P1IE |= BIT3;

P1IES |= BIT3;

P1IFG = 0;

_enable_interrupts();

while(1) {

}

} #pragma vector = PORT1_VECTOR __interrupt void Port_1(void)

{ TA0CTL ^= MC_1; P1OUT ^= BIT0 + BIT6; P1IFG &= ~BIT3;

} #pragma vector = TIMER1_A0_VECTOR __interrupt void Timer1_A0_ISR(void)

{

cnt++;

if(cnt == 500)

{ TA0CCR1 = 650;

}

if(cnt == 1000)

{ TA0CCR1 = 3000; cnt = 0; }

}

over 7 years ago

0 Nathan Siegel over 7 years ago

TI__Genius 10980 points

Hi,

Could you please provide more information on the errors that you are seeing? Are the build errors? Or are you seeing them at runtime?

Regards,
Nathan

0 msp430programmer1990 over 7 years ago in reply to Nathan Siegel

Prodigy 30 points

TAOCTL ^ = MC_1;
P1OUT ^ = BIT0 + BIT6;

These two lines gives me an error

This first error stats that TAOCTL is undefined . The second error says that it expected a expression.

0 Bruce McKenney over 7 years ago

Guru 99665 points

The #pragma and #include statements need to be on separate lines. When I fixed this, it built with 0 errors.

0 Nathan Siegel over 7 years ago in reply to Bruce McKenney

TI__Genius 10980 points

Hi,

To clarify Bruce's comment, the #pragma statement needs to be on the line before the ISR. So, for example:

#pragma vector = TIMER1_A0_VECTOR
__interrupt void Timer1_A0_ISR(void)
{

}

Same thing for the #include:

#include<msp430.h>
int cnt;
int main (void)
{
...

I am not sure if the code that you posted has many statements on the same line because of the E2E formatting, or if that is what your code actually looks like, but putting statements on their own lines will help prevent these build errors and help you fix them when they arise. Regardless, you do need to make the changes detailed above.

Regards,
Nathan

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CCS/MSP430G2553: msp430 and servo