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  • speaker

Last edited by stephan.metzler Dec 10, 2018
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speaker

Ausgangslage

  • Ereignisse haben Audio-Effekte
    • Bumber, Flips, etc.

Bedingungen

  • sinvolle Datentypen verwenden

Aufbau

  • Seeeduino V4.2
    • als Arduino UNO programmieren
    • nicht den "Driver for Seeeduino V4.2" installieren
  • Input
    • Wii Nunchuck - I2C
  • Output
    • Speaker für die Audio-Effekte
      als digiteler Output #define SPEAKER 3 ansteuerbar
    • Led - D8

Handlungsziele

Vorgehen Hannok Handlungsnotwendige Kenntnisse
Töne, Frequenzen PWM
Tonfolgen erzeugen Array, Iteration
sinnvolle Datentypen Array of byte
Testbarkeit Loggen, UART

Code Sample

#define SPEAKER 3

int BassTab[] = {1911, 1702, 1516, 1431, 1275, 1136, 1012}; // bass 1~7

void setup() {
  pinMode(SPEAKER, OUTPUT);
  digitalWrite(SPEAKER, LOW);
}

void loop() {
  for (int note_index = 0; note_index < 7; note_index++) {
    sound(note_index);
    delay(50);
  }
}

void sound(uint8_t note_index) {
  for (int i = 0; i < 100; i++) {
    digitalWrite(SPEAKER, HIGH);
    delayMicroseconds(BassTab[note_index]);
    digitalWrite(SPEAKER, LOW);
    delayMicroseconds(BassTab[note_index]);
  }
}
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