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CCS/MSP430FR5969: Problem adding multiple interruption routines

Part Number: MSP430FR5969

Tool/software: Code Composer Studio

Hello,

I am writing a C code which is a blend of 3 TI examples: timer_a_ex1_pwmSIngle (driverlib example), timer_b_ex2_overflowISR, and ADC. I would like to use timer b to trigger the ADC reading, and the timer a for PWM. The PWM function is working fine, but the timer b isn't. I guess its a problem with how I am declaring the interruption vectors. Could anyone help with that? I will be posting my interruption code below.

#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector = ADC12_VECTOR
#pragma vector=TIMERB1_VECTOR
__interrupt
__attribute__((interrupt(TIMERB1_VECTOR)))
__interrupt void ADC12_ISR(void)
#elif defined(__GNUC__)
void __attribute__ ((interrupt(ADC12_VECTOR))) ADC12_ISR (void)
#else
#error Compiler not supported!
#endif
{
switch (__even_in_range(ADC12IV, ADC12IV_ADC12RDYIFG))
{
case ADC12IV_NONE: break; // Vector 0: No interrupt
case ADC12IV_ADC12OVIFG: break; // Vector 2: ADC12MEMx Overflow
case ADC12IV_ADC12TOVIFG: break; // Vector 4: Conversion time overflow
case ADC12IV_ADC12HIIFG: break; // Vector 6: ADC12BHI
case ADC12IV_ADC12LOIFG: break; // Vector 8: ADC12BLO
case ADC12IV_ADC12INIFG: break; // Vector 10: ADC12BIN
case ADC12IV_ADC12IFG0: // Vector 12: ADC12MEM0 Interrupt
if (ADC12MEM0 >= 0x6B4) // ADC12MEM = A1 > 0.5V?
P1OUT |= BIT0; // P1.0 = 1
else
P1OUT &= ~BIT0; // P1.0 = 0
__bic_SR_register_on_exit(LPM0_bits); // Exit active CPU
break; // Clear CPUOFF bit from 0(SR)

case ADC12IV_ADC12IFG1: break; // Vector 14: ADC12MEM1
case ADC12IV_ADC12IFG2: break; // Vector 16: ADC12MEM2
case ADC12IV_ADC12IFG3: break; // Vector 18: ADC12MEM3
case ADC12IV_ADC12IFG4: break; // Vector 20: ADC12MEM4
case ADC12IV_ADC12IFG5: break; // Vector 22: ADC12MEM5
case ADC12IV_ADC12IFG6: break; // Vector 24: ADC12MEM6
case ADC12IV_ADC12IFG7: break; // Vector 26: ADC12MEM7
case ADC12IV_ADC12IFG8: break; // Vector 28: ADC12MEM8
case ADC12IV_ADC12IFG9: break; // Vector 30: ADC12MEM9
case ADC12IV_ADC12IFG10: break; // Vector 32: ADC12MEM10
case ADC12IV_ADC12IFG11: break; // Vector 34: ADC12MEM11
case ADC12IV_ADC12IFG12: break; // Vector 36: ADC12MEM12
case ADC12IV_ADC12IFG13: break; // Vector 38: ADC12MEM13
case ADC12IV_ADC12IFG14: break; // Vector 40: ADC12MEM14
case ADC12IV_ADC12IFG15: break; // Vector 42: ADC12MEM15
case ADC12IV_ADC12IFG16: break; // Vector 44: ADC12MEM16
case ADC12IV_ADC12IFG17: break; // Vector 46: ADC12MEM17
case ADC12IV_ADC12IFG18: break; // Vector 48: ADC12MEM18
case ADC12IV_ADC12IFG19: break; // Vector 50: ADC12MEM19
case ADC12IV_ADC12IFG20: break; // Vector 52: ADC12MEM20
case ADC12IV_ADC12IFG21: break; // Vector 54: ADC12MEM21
case ADC12IV_ADC12IFG22: break; // Vector 56: ADC12MEM22
case ADC12IV_ADC12IFG23: break; // Vector 58: ADC12MEM23
case ADC12IV_ADC12IFG24: break; // Vector 60: ADC12MEM24
case ADC12IV_ADC12IFG25: break; // Vector 62: ADC12MEM25
case ADC12IV_ADC12IFG26: break; // Vector 64: ADC12MEM26
case ADC12IV_ADC12IFG27: break; // Vector 66: ADC12MEM27
case ADC12IV_ADC12IFG28: break; // Vector 68: ADC12MEM28
case ADC12IV_ADC12IFG29: break; // Vector 70: ADC12MEM29
case ADC12IV_ADC12IFG30: break; // Vector 72: ADC12MEM30
case ADC12IV_ADC12IFG31: break; // Vector 74: ADC12MEM31
case ADC12IV_ADC12RDYIFG: break; // Vector 76: ADC12RDY
default: break;
}
}

void TIMERB1_ISR(void)
{
/* Any access, read or write, of the TBIV register automatically resets the
highest "pending" interrupt flag. */
switch(__even_in_range(TBIV,14))
{
case 0: break; // No interrupt
case 2: break; // CCR1 not used
case 4: break; // CCR2 not used
case 6: break; // CCR3 not used
case 8: break; // CCR4 not used
case 10: break; // CCR5 not used
case 12: break; // CCR6 not used
case 14: // overflow
ADC12CTL0 |= ADC12ENC | ADC12SC;
//Toggle P1.0
GPIO_toggleOutputOnPin(
GPIO_PORT_P1,
GPIO_PIN7
);
break;
default: break;
}
}

  • Hi Luiz,

    It looks like you've combined the "#pragma vector" for the TimerB interrupt and the ADC interrupt. Instead of placing it at them together it should look something like this:

    #if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
    #pragma vector=ADC12_VECTOR
    __interrupt void ADC12ISR (void)
    #elif defined(__GNUC__)
    void __attribute__ ((interrupt(ADC12_VECTOR))) ADC12ISR (void)
    #else
    #error Compiler not supported!
    #endif
    {
    switch (__even_in_range(ADC12IV, ADC12IV_ADC12RDYIFG))
    {
    case ADC12IV_NONE: break; // Vector 0: No interrupt
    case ADC12IV_ADC12OVIFG: break; // Vector 2: ADC12MEMx Overflow
    case ADC12IV_ADC12TOVIFG: break; // Vector 4: Conversion time overflow
    case ADC12IV_ADC12HIIFG: break; // Vector 6: ADC12BHI
    case ADC12IV_ADC12LOIFG: break; // Vector 8: ADC12BLO
    case ADC12IV_ADC12INIFG: break; // Vector 10: ADC12BIN
    case ADC12IV_ADC12IFG0: // Vector 12: ADC12MEM0 Interrupt
    if (ADC12MEM0 >= 0x6B4) // ADC12MEM = A1 > 0.5V?
    P1OUT |= BIT0; // P1.0 = 1
    else
    P1OUT &= ~BIT0; // P1.0 = 0
    __bic_SR_register_on_exit(LPM0_bits); // Exit active CPU
    break; // Clear CPUOFF bit from 0(SR)
    
    case ADC12IV_ADC12IFG1: break; // Vector 14: ADC12MEM1
    case ADC12IV_ADC12IFG2: break; // Vector 16: ADC12MEM2
    case ADC12IV_ADC12IFG3: break; // Vector 18: ADC12MEM3
    case ADC12IV_ADC12IFG4: break; // Vector 20: ADC12MEM4
    case ADC12IV_ADC12IFG5: break; // Vector 22: ADC12MEM5
    case ADC12IV_ADC12IFG6: break; // Vector 24: ADC12MEM6
    case ADC12IV_ADC12IFG7: break; // Vector 26: ADC12MEM7
    case ADC12IV_ADC12IFG8: break; // Vector 28: ADC12MEM8
    case ADC12IV_ADC12IFG9: break; // Vector 30: ADC12MEM9
    case ADC12IV_ADC12IFG10: break; // Vector 32: ADC12MEM10
    case ADC12IV_ADC12IFG11: break; // Vector 34: ADC12MEM11
    case ADC12IV_ADC12IFG12: break; // Vector 36: ADC12MEM12
    case ADC12IV_ADC12IFG13: break; // Vector 38: ADC12MEM13
    case ADC12IV_ADC12IFG14: break; // Vector 40: ADC12MEM14
    case ADC12IV_ADC12IFG15: break; // Vector 42: ADC12MEM15
    case ADC12IV_ADC12IFG16: break; // Vector 44: ADC12MEM16
    case ADC12IV_ADC12IFG17: break; // Vector 46: ADC12MEM17
    case ADC12IV_ADC12IFG18: break; // Vector 48: ADC12MEM18
    case ADC12IV_ADC12IFG19: break; // Vector 50: ADC12MEM19
    case ADC12IV_ADC12IFG20: break; // Vector 52: ADC12MEM20
    case ADC12IV_ADC12IFG21: break; // Vector 54: ADC12MEM21
    case ADC12IV_ADC12IFG22: break; // Vector 56: ADC12MEM22
    case ADC12IV_ADC12IFG23: break; // Vector 58: ADC12MEM23
    case ADC12IV_ADC12IFG24: break; // Vector 60: ADC12MEM24
    case ADC12IV_ADC12IFG25: break; // Vector 62: ADC12MEM25
    case ADC12IV_ADC12IFG26: break; // Vector 64: ADC12MEM26
    case ADC12IV_ADC12IFG27: break; // Vector 66: ADC12MEM27
    case ADC12IV_ADC12IFG28: break; // Vector 68: ADC12MEM28
    case ADC12IV_ADC12IFG29: break; // Vector 70: ADC12MEM29
    case ADC12IV_ADC12IFG30: break; // Vector 72: ADC12MEM30
    case ADC12IV_ADC12IFG31: break; // Vector 74: ADC12MEM31
    case ADC12IV_ADC12RDYIFG: break; // Vector 76: ADC12RDY
    default: break;
    }
    }
    
    #if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
    #pragma vector = TIMER0_B1_VECTOR
    __interrupt void Timer0_B1_ISR (void)
    #elif defined(__GNUC__)
    void __attribute__ ((interrupt(TIMER0_B1_VECTOR))) Timer0_B1_ISR (void)
    #else
    #error Compiler not supported!
    #endif
    {
    /* Any access, read or write, of the TBIV register automatically resets the
    highest "pending" interrupt flag. */
    switch(__even_in_range(TBIV,14))
    {
    case 0: break; // No interrupt
    case 2: break; // CCR1 not used
    case 4: break; // CCR2 not used
    case 6: break; // CCR3 not used
    case 8: break; // CCR4 not used
    case 10: break; // CCR5 not used
    case 12: break; // CCR6 not used
    case 14: // overflow
    ADC12CTL0 |= ADC12ENC | ADC12SC;
    //Toggle P1.0
    GPIO_toggleOutputOnPin(
    GPIO_PORT_P1,
    GPIO_PIN7
    );
    break;
    default: break;
    }
    }

    Best regards, 
    Caleb Overbay

  • Hi Luiz,

    One more point. You can setup your ADC to trigger from a timer without using a timer ISR. The msp430fr59xx_adc12_11.c example shows how to accomplish this.

    Best regards,

    Caleb Overbay

  • Thank you Caleb!

    Regards,

    Luiz Moreira

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