fix beeps on ESP32

kmetz · Sep 10, 2020 · f24d6ab · f24d6ab
1 parent 112fe87
commit f24d6ab
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/coro2sens/coro2sens.ino b/coro2sens/coro2sens.ino
@@ -130,7 +130,13 @@ void alarmOnce() {
  * Triggered continuously when the CO2 level is critical.
  */
 void alarmContinuous() {
+#if defined(ESP32)
+ // Use Tone32.
+ tone(BUZZER_PIN, BEEP_TONE, BEEP_DURATION_MS, 0);
+#else
+ // Use Arduino tone().
  tone(BUZZER_PIN, BEEP_TONE, BEEP_DURATION_MS);
+#endif
 }
 
 
@@ -147,6 +153,9 @@ void setup() {
  led.setPixelColor(0, 0, 0, 0);
  led.show();
 
+ // Initialize buzzer.
+ pinMode(BUZZER_PIN, OUTPUT);
+
  // Initialize SCD30 sensor.
  Wire.begin();
  if (scd30.begin(Wire)) {