TMS320F280039C: CLA can not achieve two level function call

Emma Wang

Expert 5390 points

Part Number: TMS320F280039C

Hi expert,

My customer meets a problem, which is CLA can not achieve two level function call.

the complier version is 22.06.0.LTS.

they did a very simple code.

#include "app_cla.h"

void test_cla0(void)
{
    flag2++;
    duty += 0.1f;
    duty = (duty > 0.9f) ? 0.1f : duty;
}


void test_cla1(void)
{
    test_cla0();

    flag2++;
    duty += 0.1f;
    duty = (duty > 0.9f) ? 0.1f : duty;
}

__attribute__((interrupt)) void Cla1Task1 ( void ) {
    test_cla1();
    flag3++;;
}

and the flag3 can not increase.

if they call test_cla0() instead, flag3 will increase.

I remember in this document, https://www.ti.com/lit/ug/spru514y/spru514y.pdf

so why new compiler and F280039 will meet this issue?

Emma

over 3 years ago

0 Ryan Ma over 3 years ago

TI__Mastermind 27736 points

Hi Emma,

Our subject matter expert is currently out of office and will get back to you tomorrow.

Best,

Ryan Ma

0 Emma Wang over 3 years ago in reply to Ryan Ma

TI__Expert 5390 points

Ryan,

Any update?

Emma

0 Veena Kamath over 3 years ago in reply to Emma Wang

TI__Mastermind 32695 points

Hi Emma,

I was unable to reproduce the issue.

I added the a striped down version of your code to one of the CLA examples and I see all the 3 flags getting updated.

uint32_t flag1, flag2, flag3;

void test_cla0(void)
{
    flag1++;
}


void test_cla1(void)
{
    test_cla0();

    flag2++;
}


__interrupt void Cla1Task1 ( void )
{
    test_cla1();
    flag3++;

Regards,

Veena

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F280039C: CLA can not achieve two level function call