🐛 Fix fast PWM WGM code

Followup to #23102

Author: thinkyhead

Marlin/src/HAL/AVR/fast_pwm.cpp

@@ -200,15 +200,21 @@ void set_pwm_frequency(const pin_t pin, int f_desired) {
         res = res_temp_fast;
         j = i;
         // Set the Wave Generation Mode to FAST PWM
-        wgm = timer.n == 2 ? TERN(USE_OCR2A_AS_TOP, WGM2_FAST_PWM_OCR2A, WGM2_FAST_PWM) : WGM_FAST_PWM_ICRn;
+        if (timer.n == 2)
+          wgm = TERN(USE_OCR2A_AS_TOP, WGM2_FAST_PWM_OCR2A, WGM2_FAST_PWM);
+        else
+          wgm = WGM_FAST_PWM_ICRn;
       }
       // If PHASE CORRECT values are closes to desired f
       else if (f_phase_diff < f_diff) {
         f = f_temp_phase_correct;
         res = res_temp_phase_correct;
         j = i;
         // Set the Wave Generation Mode to PWM PHASE CORRECT
-        wgm = timer.n == 2 ? TERN(USE_OCR2A_AS_TOP, WGM2_PWM_PC_OCR2A, WGM2_PWM_PC) : WGM_PWM_PC_ICRn;
+        if (timer.n == 2)
+          wgm = TERN(USE_OCR2A_AS_TOP, WGM2_PWM_PC_OCR2A, WGM2_FAST_PWM);
+        else
+          wgm = WGM_PWM_PC_ICRn;
       }
     }
   }

Marlin/src/feature/spindle_laser.cpp

@@ -62,7 +62,7 @@ void SpindleLaser::init() {
     OUT_WRITE(SPINDLE_LASER_ENA_PIN, !SPINDLE_LASER_ACTIVE_STATE);    // Init spindle to off
   #endif
   #if ENABLED(SPINDLE_CHANGE_DIR)
-    OUT_WRITE(SPINDLE_DIR_PIN, SPINDLE_INVERT_DIR ? 255 : 0);         // Init rotation to clockwise (M3)
+    OUT_WRITE(SPINDLE_DIR_PIN, SPINDLE_INVERT_DIR);                   // Init rotation to clockwise (M3)
   #endif
   #if ENABLED(SPINDLE_LASER_USE_PWM)
     SET_PWM(SPINDLE_LASER_PWM_PIN);