Merge pull request #30 from dhebbeker/feature/misc-cleanup-to-main

Miscellaneous cleaup of `main.cpp`

src/main.cpp

@@ -2,23 +2,23 @@
 #include "board_pins.hpp"
 #include "display.h"
 #include "pitches.hpp"
-//#include <ESP32Tone.h>
 #include <Arduino.h>
 #include <RoxMux.h>
 #include <ShiftRegister74HC595.h>
-#include <cmath>
 #include <cstdint>
 
 /**
  * Output shift registers with most significant bit first.
  */
 ShiftRegister74HC595<1U> outputShiftRegister(board::osr::pin::data, board::osr::pin::clock, board::osr::pin::latch);
 
+/**
+ * Input shift register.
+ */
 Rox74HC165<1U> inputShiftRegister;
 
 /**
- *
- * @return 1-8 or 0 in case of no event
+ * @returns 1-8 or 0 in case of no event
  */
 static std::uint8_t getEvent()
 {
@@ -49,7 +49,6 @@ namespace main
 {
 void setup(char const *programIdentificationString)
 {
- // put your setup code here, to run once:
  pinMode(board::buzzer::pin::on_off, OUTPUT);
  inputShiftRegister.begin(board::isr::pin::data, board::isr::pin::latch, board::isr::pin::clock);
  setup_display();
@@ -64,6 +63,7 @@ void loop()
  const auto event = getEvent();
  if (event)
  {
+ Serial.printf("Process event '%u'.\n", event);
  constexpr std::uint16_t notes[] = {note::c3, note::d3, note::e3, note::f3, note::g3, note::a3, note::b3, note::c4};
  const std::uint8_t newRegisterValue = 1 << (8 - event);
  outputShiftRegister.setAll(&newRegisterValue);