i have piezo transducer hooked 2 of attiny85 pins, , i'm driving via software in ac mode @4khz using timer , interrupt.
i switch on hardware solution (no interrupt) using oc1b/!oc1b (pb4,pb3), i'm not sure if think (inverts, oc1b/pb4 = !oc1b/pb3).
can supply pointers or example uses oc1b/!oc1b, or how configure inverted output @4khz?
