Don't modify TCA0 clock divider to avoid breaking delay()

Author: facchinm

src/megaavr/Servo.cpp

@@ -3,8 +3,8 @@
 #include <Arduino.h>
 #include <Servo.h>
 
-#define usToTicks(_us)    ((clockCyclesPerMicrosecond() * _us) / 16)                 // converts microseconds to tick
-#define ticksToUs(_ticks) (((unsigned) _ticks * 16) / clockCyclesPerMicrosecond())   // converts from ticks back to microseconds
+#define usToTicks(_us)    ((clockCyclesPerMicrosecond() / 16 * _us) / 4)                 // converts microseconds to tick
+#define ticksToUs(_ticks) (((unsigned) _ticks * 16) / (clockCyclesPerMicrosecond() / 4))   // converts from ticks back to microseconds
 
 #define TRIM_DURATION  5                                   // compensation ticks to trim adjust for digitalWrite delays
 
@@ -79,7 +79,7 @@ ISR(TCB2_INT_vect)
 
 static void initISR(timer16_Sequence_t timer)
 {
-  TCA0.SINGLE.CTRLA = (TCA_SINGLE_CLKSEL_DIV16_gc) | (TCA_SINGLE_ENABLE_bm);
+  //TCA0.SINGLE.CTRLA = (TCA_SINGLE_CLKSEL_DIV16_gc) | (TCA_SINGLE_ENABLE_bm);
 
   _timer->CTRLA = TCB_CLKSEL_CLKTCA_gc;
   // Timer to Periodic interrupt mode