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Altera_Forum's avatar
Altera_Forum
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22 years ago

Nios II Timer

I have the need for a 10 mS periodic timer interrupt for my system. I used the timer in the SOPC builder and selected a time base of 10 mS. To keep the size low, I opted for the simple periodic tim...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Personally, for an embedded system, I'd not use a timer interrupt but just read a 'time counter' register at appropriate times.

It is likely that the timer interrupt just sets a flag that the main processing loop checks - so it is just as easy for the processing loop to check the time itself.

Getting rid of the interrupt removes all the ISR entry/exit costs and all the places where the interrupt would have to be disabled.