AM2432: SDL MCRC on ARM Cortex M4

manmath senapati

Prodigy 80 points

Part Number: AM2432

In the document SDL_AM243x_Datasheet.pdf, section 2.7 MCRC, timing provided for SDL_MCRC_computeSignCPUmode API is 1us. Can you provide the details of data size(mcrcData.size) used during calculation of this timing?
In the SDL source code example, this data size is defined as 40000u, can you provide the timing details of this CRC computing?

over 1 year ago

0 Vishwanath Reddy over 1 year ago

TI__Mastermind 19365 points

Hi,

For the datasize provided in examples, below are the timings for SDL_MCRC_computeSignCPUmode API
R5F: 3527usec
M4F: 1029usec

You can do following for getting timing measurements:

#include <kernel/dpl/ClockP.h>

uint64_t startTime, endTime, timetaken;
startTime = ClockP_getTimeUsec();

result = SDL_MCRC_computeSignCPUmode(params[useCase].instance,
params[useCase].mcrcChannelNumber,
&mcrcData, &sectSignVal);
endTime = ClockP_getTimeUsec();

timetaken = endTime-startTime;

Thanks and Regards,
Vishwanath Reddy.

0 manmath senapati over 1 year ago in reply to Vishwanath Reddy

Prodigy 80 points

Thank you Vishwanath for your responses. I will confirm with my colleagues if there are following up questions or if this information is enough for now and we can close this ticket.

0 manmath senapati over 1 year ago in reply to manmath senapati

Prodigy 80 points

Thanks for the details Vishwanath, We are good with the reply for now.

0 Vishwanath Reddy over 1 year ago in reply to manmath senapati

TI__Mastermind 19365 points

Hi,

I'm closing this ticket. If there are more questions, please raise a new ticket.

Thanks and Regards,
Vishwanath Reddy.

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AM2432: SDL MCRC on ARM Cortex M4