Q: with regard to the sw interrupt 2nd type, some AVR chips hardware automatically disable all interruptswhen an interrupt is entered, so the delay executing the entire routine in the interrupt may cause a timing problem. What other method do u like to use in a case like this??
A: Some MCUs do that--disable all interrupts when they enter an ISR. I'd bet you can turn the interrupt back on , though, via a bit in a register.
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