TMS320F280049: ERAD - measuring the number of wait states in code segments

Jozef Sedivy

Part Number: TMS320F280049
Other Parts Discussed in Thread: C2000WARE

Hello,

I would like to ask how to measure the number of wait states in code segmetns?
Could you provide some example code?

Thanks.

over 3 years ago

0 Veena Kamath over 3 years ago

TI__Mastermind 32655 points

Hi,

Do you mean measuring the only the wait cycles required for Flash accesses?

If want to measure total cycles taken between accessing Address A to Address B, that is possible using ERAD. There are few examples available in C2000ware driverlib

Regards,

Veena

0 Jozef Sedivy over 3 years ago in reply to Veena Kamath

Intellectual 320 points

Hi,
I thought that there is something which can count nop instruction in selected code segment.

0 Veena Kamath over 3 years ago in reply to Jozef Sedivy

TI__Mastermind 32655 points

Hi,

Unfortunately, we do not have a straight forward way.

In the Type 2 version of the module, available in F2838x,F28002x/3x, CPUSTAT is an input to the counter. In that case, we can use two counters. One to measure pure cycles between two points and another to measure CPUSTAT between the same two points. The difference between the two counts is the number of wait-states

Regards,

Veena

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TMS320F280049: ERAD - measuring the number of wait states in code segments