arduino-audio-tools
Public Member Functions | Protected Member Functions | Static Protected Member Functions | Protected Attributes | List of all members
AnalogAudioArduino Class Reference

Analog Data IO using a timer and the Arduino analogRead() method and writing using analogWrite();. More...

#include <AnalogAudioArduino.h>

Inheritance diagram for AnalogAudioArduino:
AudioStream BaseStream AudioInfoSupport AudioInfoSource Stream Print

Public Member Functions

virtual void addNotifyAudioChange (AudioInfoSupport &bi)
 Adds target to be notified about audio changes.
 
virtual AudioInfo audioInfo () override
 provides the actual input AudioInfo
 
virtual AudioInfo audioInfoOut ()
 provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream
 
int available () override
 
int availableForWrite () override
 
bool begin () override
 Reopen with last config.
 
bool begin (AnalogConfigStd cfg)
 
virtual void clearNotifyAudioChange ()
 Deletes all change notify subscriptions.
 
AnalogConfigStd defaultConfig ()
 provides the default configuration
 
void end () override
 
virtual void flush () override
 
bool isNotifyActive ()
 Checks if the automatic AudioInfo update is active.
 
virtual operator bool ()
 
size_t readBytes (uint8_t *data, size_t len) override
 Provides the sampled audio data.
 
virtual size_t readSilence (uint8_t *buffer, size_t length)
 Source to generate silence: just sets the buffer to 0.
 
virtual bool removeNotifyAudioChange (AudioInfoSupport &bi)
 Removes a target in order not to be notified about audio changes.
 
void setAudioInfo (AudioInfo info) override
 Defines the input AudioInfo.
 
void setNotifyActive (bool flag)
 Deactivate/Reactivate automatic AudioInfo updates: (default is active)
 
size_t write (const uint8_t *data, size_t len) override
 
virtual size_t write (uint8_t ch) override
 
virtual void writeSilence (size_t len)
 Writes len bytes of silence (=0).
 

Protected Member Functions

int decimation ()
 
int effectiveOutputSampleRate ()
 Returns the effective output sample rate.
 
bool isCombinedChannel ()
 
bool isDecimateActive ()
 
virtual int not_supported (int out, const char *msg="")
 
void notifyAudioChange (AudioInfo info)
 
void refillReadBuffer ()
 
bool setupBuffer ()
 
bool setupPins ()
 pinmode input for defined analog pins
 
bool setupTimer ()
 
bool setupTx ()
 
void updateAvg ()
 
void updateMinMax (int value)
 

Static Protected Member Functions

static void callback (void *arg)
 Sample data and write to buffer.
 

Protected Attributes

int _timeout = 10
 
int avg_value
 
BaseBuffer< uint8_t > * buffer = nullptr
 
AnalogConfigStd config
 
int count
 
int decim = 1
 
uint16_t frame_size = 0
 
AudioInfo info
 
bool is_combined_channels = false
 
bool is_notify_active = true
 
int max
 
int min
 
Vector< AudioInfoSupport * > notify_vector
 
int result_factor = 1
 
TimerAlarmRepeating timer
 
RingBuffer< uint8_t > tmp_in {0}
 
RingBuffer< uint8_t > tmp_out {0}
 

Detailed Description

Analog Data IO using a timer and the Arduino analogRead() method and writing using analogWrite();.

Author
Phil Schatzmann

Member Function Documentation

◆ isDecimateActive()

bool isDecimateActive ( )
inlineprotected

The requested sampling rate is too hight: we only process half of the samples so we can half the sampling rate


The documentation for this class was generated from the following file: