First init.

libraries/Adafruit_seesaw_Library/seesaw_spectrum.h

@@ -0,0 +1,70 @@
+#ifndef _SEESAW_SPECTRUM_H
+#define _SEESAW_SPECTRUM_H
+
+#include "Adafruit_seesaw.h"
+#include <Arduino.h>
+
+/**************************************************************************/
+/*!
+    @brief  Class that stores state and functions for seesaw audio spectrum
+             interface
+*/
+/**************************************************************************/
+class seesaw_Audio_Spectrum : public Adafruit_seesaw {
+public:
+  /**************************************************************************/
+  /*!
+    @brief  seesaw_Audio_Spectrum class constructor.
+    @param  Wi  TwoWire interface this works through.
+  */
+  /**************************************************************************/
+  seesaw_Audio_Spectrum(TwoWire *Wi = NULL) : Adafruit_seesaw(Wi) {}
+
+  ~seesaw_Audio_Spectrum() {}
+
+  /**************************************************************************/
+  /*!
+    @brief  Begin communication with Seesaw audio spectrum device.
+    @param  addr  Optional i2c address where the device can be found.
+                  Defaults to SEESAW_ADDRESS.
+    @param  flow  Optional flow control pin.
+    @return true on success, false on error.
+  */
+  /**************************************************************************/
+  bool begin(uint8_t addr = SEESAW_ADDRESS, int8_t flow = -1) {
+    if (Adafruit_seesaw::begin(addr, flow)) {
+      memset(bins, 0, sizeof bins);
+      return true;
+    }
+    return false;
+  }
+
+  void getData(void);             // Fetch latest audio spectrum data
+  void setRate(uint8_t value);    // Set audio sampling rate 0-31
+  void setChannel(uint8_t value); // Set ADC input channel
+  uint8_t getRate(void);          // Query current audio sampling rate 0-31
+  uint8_t getChannel(void);       // Query current ADC channel
+
+  /**************************************************************************/
+  /*!
+    @brief   Get value of individual spectrum bin, as determined during
+             most recent get_data() call.
+    @param   idx  Spectrum bin index (0-63) to query.
+    @return  Level: 0 (silent) to 255 (loudest) for bin.
+  */
+  /**************************************************************************/
+  uint8_t getLevel(uint8_t idx) const { return bins[idx < 64 ? idx : 63]; }
+
+  /**************************************************************************/
+  /*!
+    @brief   Get pointer to spectrum bin buffer directly. Use with caution!
+    @return  uint8_t base pointer to 64 spectrum bins.
+  */
+  /**************************************************************************/
+  uint8_t *getBuffer(void) const { return (uint8_t *)bins; }
+
+private:
+  uint8_t bins[64]; // Audio spectrum "bins"
+};
+
+#endif // end _SEESAW_SPECTRUM_H