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Altera_Forum's avatar
Altera_Forum
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20 years ago

trouble with the optimizing level settings

Hi all, I am having trouble with the optimizing level settings of my design which uses Nios II embedded system as a camera controller and transfering bulk image data to PC by UDP. Now th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Thank you for you suggestions!! Yes, I think the "volatile" definition do play some role. But I am not quite sure in what cases should I use this keyword.

And in the uC/OS-II there are OS_ENTER_CRITICAL() and OS_EXIT_CRITICAL() macros that protects certain critical code from being interrupted. I again do not know where I should use them.

Is there any rules about the usage of these items?? Thank you!!