Why use the function "CacheDataCleanBuff(..., ...)" ?

Matheus Vasconcelos

Hi, I have a doubt, in my loop forever there is the function "CacheDataCleanBuff" like in the sample "GRLIB_DEMO", but why use this ? I have two big frames and I need do this every time in my "while (1)" ?
I ask this because I see that my main loop is more slow with this function than without it.
In resume, when and why use this function ?
Thanks in advance.

over 10 years ago

0 Sandhya Satyanarayana over 10 years ago

TI__Intellectual 1165 points

Hi Matheus,
What do you do in your infinite while (1) loop?
The function CacheDataCleanBuff() can be used to make a buffer in D-Cache to be coherent with memory.

Regards
Sandhya

0 Matheus Vasconcelos over 10 years ago in reply to Sandhya Satyanarayana

Intellectual 720 points

Hi Sandhya.
In my main loop I have some routines, like draw images in a display, send some data to serial and spi, but I do not know if it is necessary call this function every time.

Thanks.

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Why use the function "CacheDataCleanBuff(..., ...)" ?