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Altera_Forum's avatar
Altera_Forum
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22 years ago

Nios Semaphore?

I need a good semaphore to make a fifo IRQ safe. On the PC it's easy with the assembly instruction BTS which Bit Tests and Sets. So you can try to set a bit and know if you did it in a single c...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
22 years ago

SCS,

Good point. I thought of that but took the easy way http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif

I wrote the function that tells me if interrupts are dissabled and ran for awhile. Since they were never disabled I knew it would be safe to blindly disable/enable. Sloppy. I&#39;ll put in the code to restore the state.

Thanks!

Ken