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