Simplelink write to flash - can we erase-ahead?

Chrysolin Sudhan

Other Parts Discussed in Thread: CC3200

I'm working on an application that needs to open a 150KByte flash file for write. It has to be done real-time, i.e, when an event happens, CC3200 wakes form hibernate and stores the file in flash. Now, the sl_fsOpen() is taking 1.6 seconds. The flash erase is taking all the time. Can we erase the flash ahead and keep? So that when the event happens, we can just write the data directly into the file. Any plans of providing this option in the simplelink library?

Thanks in advance,

Chrysolin

over 10 years ago

0 thanga raj over 10 years ago

Genius 3690 points

Does sl_Fsopen() take 1.6s how did you calculated it ??? And Why are you erasing the flash .. You can just delete the file you created ? It is better to avoid delete also ..
processors.wiki.ti.com/.../CC3100_%26_CC3200_SFlash_Recommendations

0 Chrysolin Sudhan over 10 years ago in reply to thanga raj

Prodigy 40 points

Hi,

thanga raj said:
Does sl_Fsopen() take 1.6s how did you calculated it ???

I profiled time taken between entry and exit of sl_fsOpen() using a timer.

thanga raj said:
Why are you erasing the flash

When we need to write something in a flash, we first erase those blocks in the flash :)

Chrysolin

0 thanga raj over 10 years ago in reply to Chrysolin Sudhan

Genius 3690 points

Are you erasing before every sl_fsopen()?? It is not actually needed !! sl_fsopen() in write mode will automatically flush the contents of flash ! You need not erase it seperately !!

0 made4engineering over 10 years ago in reply to thanga raj

TI__Mastermind 27635 points

HI Chrysolin,

There is no mechanism to "erase ahead" as you say. If you want to reduce erase times, you can split the file into multiple smaller ones.

-Aaron

0 Chrysolin Sudhan over 10 years ago in reply to made4engineering

Prodigy 40 points

Hi Aaron,

Thanks for clarifying. Any idea of providing this feature with future SDK releases? Splitting into multiple smaller files will not work for our application.

Thanks,

Chrysolin

0 made4engineering over 10 years ago in reply to Chrysolin Sudhan

TI__Mastermind 27635 points

HI Chrysolin,

A feature like this is not currently planned for development.

-Aaron

0 Chrysolin Sudhan over 10 years ago in reply to made4engineering

Prodigy 40 points

Ok. Thanks.

Thanks,

Chrysolin

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Simplelink write to flash - can we erase-ahead?