CiderRacer2601/buzzer.cpp

#include <Arduino.h>
#include "buzzer.h"

#define PIN_BUZZER 18

#define PWM_CHANNEL_BUZZER 0
#define RESOLUTION_BUZZER 8

void buzzer_setup() {
  ledcSetup(PWM_CHANNEL_BUZZER, 2000, RESOLUTION_BUZZER);
  ledcAttachPin(PIN_BUZZER, PWM_CHANNEL_BUZZER);
  ledcWrite(PWM_CHANNEL_BUZZER, 128);
}

void buzz() {
  ledcWriteTone(PWM_CHANNEL_BUZZER, 300);
  delay(800);
  ledcWriteTone(PWM_CHANNEL_BUZZER, 0);  
}

void beep() {
  ledcWriteTone(PWM_CHANNEL_BUZZER, 2000);
  delay(200);
  ledcWriteTone(PWM_CHANNEL_BUZZER, 0);  
}

void test_buzzer() {
  for (int freq = 255; freq < 10000; freq = freq + 250){
    Serial.print("Testing frequency: "); Serial.println(freq);
  
    ledcWriteTone(PWM_CHANNEL_BUZZER, freq);
    delay(1000);
  }
}