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Weird error from IAR when using an interrupt

Brock
Intellectual 970 points
Other Parts Discussed in Thread: MSP430F2619

So I am beginning to familiarize myself with interrupts and how they work on the MSP430.

Below is my code:

#include "msp430f2619.h"
#include "intrinsics.h"

#define LED1 BIT3
#define LED2 BIT4

void main (void)
{
  WDTCTL = WDTPW|WDTHOLD;
  P2OUT = ~LED1;
  P2DIR = LED1|LED2;
  TACCR0 = 49999;
  TACCTL0 = CCIE;
  TACTL = MC_1|ID_3|TASSEL_2|TACLR;
 
  __enable_interrupt();
  for (;;) {
  }
}
#pragma vector = TIMERA0_VECTOR
__interrupt void TA0_ISR (void)
{
  P2OUT ^= LED1|LED2;
}

 

It compiles fine; but when i go to 'rebuild all' there is an issue linking and i get this error msg:

Error[e16]: Segment INTVEC (size: 0x34 align: 0x1) is too long for segment definition. At least 0x14 more bytes needed. The problem occurred while 
processing the segment placement command "-Z(CODE)INTVEC=FFE0-FFFF", where at the moment of placement the available memory ranges were 
"CODE:ffe0-ffff"
   Reserved ranges relevant to this placement:
   ffe0-ffff            INTVEC
Error while running Linker

uhhh help?

  • 0
    Intellectual 970 points

    OK I solved this error but I have another question. When I run this code it simply makes the chip light up and not alternate between off/on like it supposed to. Anyone see why this would be the case?

  • 0 in reply to Brock
    Guru 17650 points

    O.K.! I just expanded a sample I've already used in a different posting to fit your needs. Check it out to see if it works now!

    aBUGSworstnightmare

    /*-----------------------------------------------------------------------------
    // Compiler switches
    // used as:
    //            #ifdef  SOMETHING
    //                ...        ; additional code lines for test version only
    //            #endif
    // ONLY USE ONE AT AT TIME (one for speed and one for target selection)!!!!!!!!!!!!!
    //---------------------------------------------------------------------------*/
    #define SLOW                           // slow MCLK settings
    //#define FAST                             // fast MCLK settings

    // target selection
    #define eZ430RF2500
    //#define eZ430F2013

    #ifdef eZ430RF2500
    #include "msp430f2274.h"
    // defines for eZ430-RF2500T
    // LEDs were connected to P1.0 and P1.1
    #define LED1 BIT0
    #define LED2 BIT1
    #endif

    #ifdef eZ430F2013
    #include "msp430f2013.h"
    // defines for eZ430-F2012
    // LED is connected to P1.0
    #define LED1 BIT0
    #define LED2 BIT1        // add a second LED to P1.1 (P3 breadboard connection) if needed; don't forget the resistor!
    #endif

    #include "intrinsics.h"

    void main (void)
    {
      // disable watchdog timer
      //------------------------
      WDTCTL = WDTPW + WDTHOLD;               // Stop WDT

      // clock setting
      //------------------------
      #ifdef FAST
      DCOCTL = CALDCO_16MHZ;                   // Set DCO to 16MHz
      BCSCTL1 = CALBC1_16MHZ;                  // MCLC = SMCLK = DCOCLK = 16MHz
      #endif
     
      #ifdef SLOW
      DCOCTL = CALDCO_1MHZ;                   // Set DCO to 1MHz
      BCSCTL1 = CALBC1_1MHZ;                  // MCLC = SMCLK = DCOCLK = 1MHz
      #endif
      BCSCTL1 |= DIVA_0;                      // ACLK = ACLK/1
      BCSCTL3 = LFXT1S_2;                     // LFXT1 = ACLK = VLO = ~12kHz
      BCSCTL3 &= ~LFXT1OF;                    // clear LFXT1OF flag, 0
     
      P1OUT = ~LED1;
      P1DIR = LED1|LED2;
      TACCR0 = 49999;
      TACCTL0 = CCIE;
      TACTL = MC_1|ID_3|TASSEL_2|TACLR;
     
      __enable_interrupt();
      for (;;)
      {
          __no_operation();
      }
    }
    #pragma vector = TIMERA0_VECTOR
    __interrupt void TA0_ISR (void)
    {
      P1OUT ^= LED1|LED2;
    }

     

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