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TMS320F28379D: Code works from RAM, not from FLASH

Mark Feller
Expert 1220 points
Part Number: TMS320F28379D


I have some code that works well when running from RAM, but not when I try building from Flash.  I use the CLA.  The linker command files look to be correct, according to what I have read online.  The two CLA tasks trigger once, and then never again.  

The code startup, roughly:

EALLOW

Device_init();

Interrupt_initModule();

Interrupt_initVectorTable();

setupADCs();

setupGPIO();

setupPWM();

setupCLA();

Interrupt_register(INT_CLA1_1, &ISR_cla1_task1);
Interrupt_register(INT_CLA1_2, &ISR_cla1_task2);

ADC_setInterruptSource(ADCC_BASE, ADC_INT_NUMBER1, ADC_SOC_NUMBER1);
ADC_clearInterruptStatus(ADCC_BASE, ADC_INT_NUMBER1);
ADC_enableInterrupt(ADCC_BASE, ADC_INT_NUMBER1);

    calcOffsetsADC();

EDIS;

ADC_enableInterrupt(ADCC_BASE, ADC_INT_NUMBER1)

Interrupt_enable(INT_CLA1_1);

EPWM_clearEventTriggerInterruptFlag(EPWM2_BASE);
Interrupt_enable(INT_CLA1_2);
EINT;

while(1);

CLA Task 1 is triggered by ADCC Interrupt 1

CLA Task 2 is triggered by EPWM2

The CLA interrupt ISRs are

__interrupt void ISR_cla1_task1(void)
{

ADC_clearInterruptStatus(ADCC_BASE, ADC_INT_NUMBER1);

Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP11);
//
// Check if overflow has occurred
//
if(true == ADC_getInterruptOverflowStatus(ADCC_BASE, ADC_INT_NUMBER1))
{
ADC_clearInterruptOverflowStatus(ADCC_BASE, ADC_INT_NUMBER1);
ADC_clearInterruptStatus(ADCC_BASE, ADC_INT_NUMBER1);
}
return;
}

__interrupt void ISR_cla1_task2(void)
{

EPWM_clearEventTriggerInterruptFlag(EPWM2_BASE);
Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP11);
return;
}

I see that both CLA tasks run one time.  I'm kind of at a loss as to what to look at next for this.  Any suggestions?

  • 0
    TI__Mastermind 32655 points

    Please share the linker cmd file.

    Note that the cla program and const needs to be loaded to Flash and copied to the LSRAM at runtime.

    Regards,

    Veena

  • 0 in reply to Veena Kamath
    Expert 1220 points

    I am doing this:

    void setupCLA()
{
#ifdef _FLASH
    //
    // Copy CLA code from its load address (FLASH) to CLA program RAM
    //
    // Note: during debug the load and run addresses can be
    // the same as Code Composer Studio can load the CLA program
    // RAM directly.
    //
    // The ClafuncsLoadStart, ClafuncsLoadEnd, and ClafuncsRunStart
    // symbols are created by the linker.
    //
    memcpy((uint32_t *)&Cla1funcsRunStart, (uint32_t *)&Cla1funcsLoadStart,
            (uint32_t)&Cla1funcsLoadSize);

    memcpy((uint32_t *)&Cla1ConstRunStart, (uint32_t *)&Cla1ConstLoadStart,
            (uint32_t)&Cla1ConstLoadSize);
#endif

  • 0 in reply to Mark Feller
    Expert 1220 points

    Linker file uploaded:

  • 0 in reply to Mark Feller
    Expert 1220 points

    FYI...I ended up manually verifying / modifying section assignments versus mainly re-using the existing linker cmd file copied from a TI sample project, and it seems to be working better.  Not sure exactly which part was the actual issue and fix.