improve millis TCA ISR

SpenceKonde · May 30, 2023 · 70032b0 · 70032b0
1 parent 4fbe30a
commit 70032b0
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Showing 2 changed files with 141 additions and 150 deletions.
diff --git a/megaavr/cores/megatinycore/Arduino.h b/megaavr/cores/megatinycore/Arduino.h
@@ -411,9 +411,9 @@ uint8_t PWMoutputTopin(uint8_t timer, uint8_t channel);
  * 3/19/23: These are supposed to be macros, not inline functions
  * Users have reported problems resulting from their being functions, even inline ones
  */
-#define clockCyclesPerMicrosecond() ((uint16_t)(F_CPU / 1000000L))
-#define clockCyclesToMicroseconds(a) ((uint32_t)((a) / clockCyclesPerMicrosecond()))
-#define microsecondsToClockCycles(a) ((uint32_t)((a) * clockCyclesPerMicrosecond()))
+#define clockCyclesPerMicrosecond()       ((F_CPU / 1000000UL))
+#define clockCyclesToMicroseconds(__a__)  (__a__ / clockCyclesPerMicrosecond())
+#define microsecondsToClockCycles(__a__)  (__a__ * clockCyclesPerMicrosecond())
 
 // Currently DxCore has no cases where the millis timer isn't derived from system clock, but that will change
 /* This becomes important when we support other timers for timekeeping. The Type D timer can be faster, requiring:
@@ -441,15 +441,15 @@ uint32_t microsecondsToMillisClockCycles(uint32_t microseconds);
  */
 #ifdef MILLIS_USE_TIMERD0
   #if (F_CPU == 20000000UL || F_CPU == 10000000UL ||F_CPU == 5000000UL)
-    #define millisClockCyclesPerMicrosecond() ((uint16_t) (20))  // this always runs off the 20MHz oscillator
+    #define millisClockCyclesPerMicrosecond() (20)  // this always runs off the 20MHz oscillator
   #else
-    #define millisClockCyclesPerMicrosecond() ((uint16_t) (16))
+    #define millisClockCyclesPerMicrosecond() (16)
   #endif
 #else
-  #define millisClockCyclesPerMicrosecond() ((uint16_t) ((F_CPU) / 1000000L))
+  #define millisClockCyclesPerMicrosecond() (F_CPU / 1000000UL)
 #endif
-#define millisClockCyclesToMicroseconds(a) ((uint32_t)((a) / millisClockCyclesPerMicrosecond()))
-#define microsecondsToMillisClockCycles(a) ((uint32_t)((a) * millisClockCyclesPerMicrosecond()))
+#define millisClockCyclesToMicroseconds(__a__) (__a__ / millisClockCyclesPerMicrosecond())
+#define microsecondsToMillisClockCycles(__a__) (__a__ * millisClockCyclesPerMicrosecond())
 
 /* Timers and Timer-like-things
  * These are used for two things: Identifying the timer on a pin in