Extract buzzer to separate file

metronom.ino

@@ -2,7 +2,6 @@
 #include "SAMD_ISR_Timer.h"
 
 SAMDTimer TaskTimer(TIMER_TC3);
-SAMDTimer BuzzerTimer(TIMER_TC5);
 SAMD_ISR_Timer TasksISRs;
 
 void TasksHandler(void) { TasksISRs.run(); }
@@ -26,40 +25,25 @@ volatile float temperature = 0.0;
 
 void setup() {
   initButton();
-  initTemperature();
+  initBME280();
+  initBuzzer();
   initTube();
 
-  pinMode(BUZZER_PIN, OUTPUT);
-  BuzzerTimer.attachInterrupt(BUZZER_FREQ *2, buzz);
-  BuzzerTimer.disableTimer();
-
-  TaskTimer.attachInterruptInterval_MS(25, TasksHandler);
+  TaskTimer.attachInterruptInterval_MS(20, TasksHandler);
   TasksISRs.setInterval(PERIOD_MS, runMetronome);
   TasksISRs.setInterval(PERIOD_MS, readTemperature);
   TasksISRs.setInterval(PERIOD_MS, updateTube);
 }
 
-volatile bool buzzing = false;
-void buzz() {
-  digitalWrite(BUZZER_PIN, buzzing ? LOW : HIGH);
-  buzzing = !buzzing;
-}
-
-void stopBuzzer() {
-  BuzzerTimer.disableTimer();
-  digitalWrite(BUZZER_PIN, LOW);
-}
-
 void runMetronome() {
   if (countdown > 0) {
     countdown -= 1;
 
     digitalWrite(BUTTON_LED_PIN, countdown % 2 ? HIGH : LOW);
   } else if (countdown == 0) {
-    TasksISRs.setTimeout(100, stopBuzzer);
-    BuzzerTimer.enableTimer();
+    TasksISRs.setTimeout(100, noBuzz);
+    buzz();
   }
 }
 
-void loop() {
-}
+void loop() {}