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arduino-cli/libraries/Adafruit_Circuit_Playground/utility/Adafruit_CPlay_Speaker.h

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+// Adafruit Circuit Playground speaker library
+// by Phil Burgess / Paint Your Dragon.
+
+#ifndef ADAFRUIT_CPLAY_SPEAKER_H
+#define ADAFRUIT_CPLAY_SPEAKER_H
+
+#include <Arduino.h>
+
+#if !defined(__AVR__) // circuit playground express has nicer amp w/shutdown
+  #define CPLAY_SPEAKER_SHUTDOWN 11 ///< shutdown pin (Express boards only)
+#endif
+
+/**************************************************************************/
+/*! 
+    @brief  Class that stores state and functions for the speaker on CircuitPlayground boards
+*/
+/**************************************************************************/
+class Adafruit_CPlay_Speaker {
+ public:
+  Adafruit_CPlay_Speaker(void) { started = false; };
+  void begin(void),
+       end(void),
+       set(uint8_t value),
+       playSound(const uint8_t *data, uint32_t length, uint16_t sampleRate,
+         bool tenBit=false),
+       say(const uint8_t *addr);
+
+  void enable(bool e);
+
+  /**************************************************************************/
+  /*! 
+      @brief  disable the speaker.
+      @note this function only has an effect on 'Express' boards
+  */
+  /**************************************************************************/
+  void off(void) { enable(false); };
+
+  /**************************************************************************/
+  /*! 
+      @brief  enable the speaker.
+      @note this function only has an effect on 'Express' boards
+  */
+  /**************************************************************************/
+  void on(void) { enable(true); };
+
+ private:
+  bool started;
+};
+
+#endif // ADAFRUIT_CPLAY_SPEAKER_H