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IRQ handler in sams70q21

Posted: Thu Dec 10, 2015 10:17 am
by linuxjiahuo
We have 20 input sensors that directly connect to PC port on sams70q21. When I use them as irq mode, I find that only the former 7 sensors can call irq handlers, and the others do not response to irq handlers. Why ? Is it the chip limit?
Thank you.

Re: IRQ handler in sams70q21

Posted: Mon Feb 15, 2016 3:01 am
by linuxjiahuo
I get it.there is a macro to control the irq number.