CC3220SF-LAUNCHXL: Accessing DWT

Bhanuprakash R

Part Number: CC3220SF-LAUNCHXL
Other Parts Discussed in Thread: CC3220SF

Hi,

I'm trying to configure the DWT_CTRL register and enable the CYCCNT. I don't have much information on how to write to this register.

I'm using Code Composer Studio v8.

Please Help

Thanks

Prakash

over 4 years ago

0 Michael Reymond over 4 years ago

TI__Mastermind 40965 points

Hi Prakash,

Those registers are not in the memory map of the CC3220 MCU. Are those registers referring to the ARM debug interface? If so, you will most likely be unable to access them in your application as the SWD interface of the CC3220 is not designed to be configurable by the running user application.

What purpose did you have in mind for those registers? Are you trying to use those registers for timing purposes?

Regards,
Michael

0 Bhanuprakash R over 4 years ago in reply to Michael Reymond

Prodigy 60 points

Hi Michael,

As per the datasheet, those registers are available in CC3220SF MCU and the address in the memory map is 0xE0001000.

Actually I'm trying to use SystemView Application to visually trace the FreeRTOS scheduler and context switching of tasks.

Thanks & Regards

Prakash

0 Bhanuprakash R over 4 years ago in reply to Michael Reymond

Prodigy 60 points

Hi Michael,

Do you have any suggestion..? Please reply

Thanks & Regards

Prakash

0 Michael Reymond over 4 years ago in reply to Bhanuprakash R

TI__Mastermind 40965 points

Hi Prakash,

There unfortunately isn't any CC3220-specific documentation on how to write to and interact with the DWT registers.

As this seems like a feature that is general to all ARM Cortex M4 devices, I suggest that you look at ARM's documentation on that peripheral.

Regards,
Michael

0 Bhanuprakash R over 4 years ago in reply to Michael Reymond

Prodigy 60 points

Hi Michael,

Thank you very much for the suggestion.

I'll look into the ARM's Documentation once.

Regards,

Prakash

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CC3220SF-LAUNCHXL: Accessing DWT