CCS/TMS320F28377S: TMS320F28377S

WENTAO ZHANG

Part Number: TMS320F28377S
Other Parts Discussed in Thread: CONTROLSUITE

Tool/software: Code Composer Studio

I had a question to the CLA example in controlsuite, : when ADC interrupt is received by cla, should the adc program be put in the cla task function or cla_isr function? is it correct that cla_isr function is executed by cpu and task by cla?

over 8 years ago

0 Gautam Iyer over 8 years ago

Guru 192875 points

Hi,

WENTAO ZHANG said:
when ADC interrupt is received by cla, should the adc program be put in the cla task function or cla_isr function?

Generally, when the ADC interrupt ADCINTx occurs the control is given to CLA task first where you can fetch adc values pass it through the required filters and perform additional computations. Later the control is given to CLA ISR which is executed by CPU.

WENTAO ZHANG said:
is it correct that cla_isr function is executed by cpu and task by cla?

You're absolutely correct.

Regards,

Gautam

0 WENTAO ZHANG over 8 years ago in reply to Gautam Iyer

Prodigy 210 points

thanks， the manual guide tells that 'The CLA executes instructions until the MSTOP instruction is found. This indicates the end of the task.', but what makes me confused that there is no MSTOP instruction in cla tasks functions in cla example in controlsuite . so should the MSTOP exists or not?

0 Gautam Iyer over 8 years ago in reply to WENTAO ZHANG

Guru 192875 points

WENTAO ZHANG said:
but what makes me confused that there is no MSTOP instruction in cla tasks functions in cla example in controlsuite . so should the MSTOP exists or not?

MSTOP is very well required. You can observe MSTOP in CLA tasks under .asm files.

Regards,

Gautam

0 WENTAO ZHANG over 8 years ago in reply to Gautam Iyer

Prodigy 210 points

hi,
but there is no MSTOP in the example program cla_matrix_multiply
__interrupt void Cla1Task1 ( void )
{
//Local Variables
int32_t tmp;
int i,j,k;

__mdebugstop();
for(i=0;i<M;i++)
{
for(j=0;j<N;j++)
{
tmp = 0;
for(k=0;k<N;k++)
{
tmp += x[i][k]*y[k][j];
}
z[i][j] = tmp;
}
}
}
and there is no cla asm files.
regards,
zhang wentao

0 Gautam Iyer over 8 years ago in reply to WENTAO ZHANG

Guru 192875 points

Oh! that's a .cla file and not a .asm file. Actually .asm file requires it as I mentioned it earlier. Check file: fir32.asm under
C:\ti\controlSUITE\device_support\F2837xS\v210\F2837xS_examples_Cpu1\cla_adc_fir32\cpu01

Regards,
Gautam

0 WENTAO ZHANG over 8 years ago in reply to Gautam Iyer

Prodigy 210 points

but in the cla_divide example,there is no cla file and no MSTOP in the task function.

0 Gautam Iyer over 8 years ago in reply to WENTAO ZHANG

Guru 192875 points

In the above example, there is : divide.cla

0 WENTAO ZHANG over 8 years ago in reply to Gautam Iyer

Prodigy 210 points

yes， there is a divide.cla, but in the function,
__interrupt void Cla1Task1 ( void )
{
Res = Num/Den;
}
there is no MSTOP instruction. what I confused is that why there is no MSTOP in the task1?

0 Gautam Iyer over 8 years ago in reply to WENTAO ZHANG

Guru 192875 points

Ok, this is what I meant in my above posts: .cla doesn't require MSTOP as its C code. .asm require MSTOP instruction as its assembly.
Hope its clear now.

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CCS/TMS320F28377S: TMS320F28377S