Generally, interrupts are disabled during an ISR, and re-enabled when the ISR completes. Long ISR routines may cause interrupts to be missed. If the ISR is brief, the odds of every interrupt being processed go up.
Generally, interrupts are disabled during an ISR, and re-enabled when the ISR completes. Long ISR routines may cause interrupts to be missed. If the ISR is brief, the odds of every interrupt being processed go up.