CLA INTERNAL ERROR: no match for PLUS

Fulano de Tal

Expert 2090 points

I'm using F28069 with compiler 6.2.6 and in my ClaTasks.cla, I have the following code in task 8 (initialization task):

static float32 VoutSqBuf[RMS_LEN];
//RMS_LEN is #define'd in .h file
//.... tasks 1-7 code
interrupt void Cla1Task8 (void)
{
int32 i;
// Flush out RMS buffer
    for(i=0; i<RMS_LEN; i++)
    {
        VoutSqBuf[i]=0.0;
    }
}

I get the following error (line 459 is line 9 here):

>> ../ClaTasks.cla, line 459: INTERNAL ERROR: no match for PLUS

As a workaround, I have to assign a pointer to VoutSqBuf, assigning the value to 0, then increment the pointer, and then reset it to the first element of the buffer after the for loop.

Any ideas why I'm getting this error?

over 11 years ago

0 Fulano de Tal over 11 years ago

Expert 2090 points

Anyone?

0 Vishal_Coelho over 11 years ago in reply to Fulano de Tal

TI__Mastermind 20850 points

Hmm "line 459" is what is throwing me off. Do you have anything on line 459 in the .cla file. If not then its found a problem with one of the header files included. Id suggest including the headers files one at a time to see which one breaks it and then proceeding to find the offending line in that header

0 Fulano de Tal over 11 years ago in reply to Vishal_Coelho

Expert 2090 points

Line 459 is the same as line 9 in the code above I posted. I can isolate it just that code if I make a project with only that and no other code.

0 Vishal_Coelho over 11 years ago in reply to Fulano de Tal

TI__Mastermind 20850 points

Try getting rid of the static. From the compiler guide:

"Defining and initializing global/static data is not supported.Since the CLA code is executed in an interrupt driven environment there is no C system boot sequence. As a result, global/static data initialization must be done during program execution, either by the C28x driver code or within a CLA function."

0 Fulano de Tal over 11 years ago in reply to Vishal_Coelho

Expert 2090 points

I think we're allowed to declare global/static data, we just can't initialize them when declared. We just have to initialize it on our own. I do this in CLA task 8, which I call through software IACK in InitCla() from main()

0 Vishal_Coelho over 11 years ago in reply to Fulano de Tal

TI__Mastermind 20850 points

I'll switch this post over to the compiler forum. Hopefully they know what the problem is.

0 Archaeologist over 11 years ago in reply to Vishal_Coelho

TI__Guru* 84285 points

This is a bug that was introduced in C2000/CLA compiler version 6.2.6. Switch back to 6.2.5 if you can. We'll have more information shortly.

0 Archaeologist over 11 years ago in reply to Archaeologist

TI__Guru* 84285 points

This issue is being tracked as SDSCM00049909.

As a workaround, write it like this:

interrupt void Cla1Task8 (void)
{
    // Flush out RMS buffer
    float32 *ptr = VoutSqBuf;
    while (ptr < VoutSqBuf + RMS_LEN)
    {
        *ptr++ = 0.0;
    } 
}