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Altera_Forum
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15 years ago

Timer interrupt with RTOS-II

Hi all, I'm working with RTOS-II and I need a very precise timing for a simple function. I have a dedicated timer which can trigger an interrupt every 1ms. So I used alt_irq_register(MY_TIM...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Q1) yes, that is the way you register IRQs with the provided uCOSII RTOS

Q2) Not really sure you can improve on this. The jitter you see is the differnce in time it takes the RTOS to respond to your IRQ, this is normal. If you want IO lines toggled at very precise time intervals, you need to move the logic into hardware. Nios is just a micro controller, it shouldn't be used to generate clock signals etc.