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If so, I might use the wrong approach in my code. But what's the right way to do it then? The problem I have to solve is to switch a Laser on/off according to data in a bitfield buffer (i.e. not simple PWM but an arbitrary pattern). The switch timing is crucial. During the switching the main...

Hi all, I try to trigger an ISR with high frequency (< 1 microsecond). Currently, the IntervalTimer library limits the timer period to minimum 40 F_BUS cycles, so the minimum period with F_BUS=48MHz is limited to 0.822916667 µs. Is this a hardware limit of the cpu/timer? I checked and my ISR...