Experimental: Audio output to PWM pins for the AVR. The AVR supports only up to 2 channels. More...

Inheritance diagram for PWMDriverAVR:

Public Member Functions
PWMConfig &	audioInfo ()

virtual int	availableForWrite ()

bool	begin (PWMConfig cfg)

virtual PWMConfig	defaultConfig ()

virtual void	end ()

uint32_t	framesPerSecond ()

bool	isTimerStarted ()

void	logConfig ()

virtual int	maxChannels ()

virtual void	pwmWrite (int channel, int value)

void	setBuffer (BaseBuffer< uint8_t > *buffer)

void	setupPin (int pin)

void	setupPWM ()
	Setup LED PWM.

void	setupTimer ()

void	startTimer ()

uint32_t	underflowsPerSecond ()

void	updateStatistics ()

virtual size_t	write (const uint8_t *data, size_t len)

Protected Member Functions
virtual int	decimation ()
	Decimation factor to reduce the sample rate.

void	deleteBuffer ()

virtual int	effectiveOutputSampleRate ()
	Provides the effective sample rate.

virtual bool	isDecimateActive ()

virtual int	maxOutputValue ()

virtual int	maxSampleRate ()
	Provides the max working sample rate.

virtual int	nextValue ()
	determines the next scaled value

void	playNextFrame ()
	writes the next frame to the output pins

Friends
void	defaultPWMAudioOutputCallback ()

Detailed Description

Experimental: Audio output to PWM pins for the AVR. The AVR supports only up to 2 channels.

Member Function Documentation

virtual bool isDecimateActive ( )

inlineprotectedvirtualinherited

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

void setBuffer ( BaseBuffer< uint8_t > * buffer )

inlineinherited

You can assign your own custom buffer impelementation: must be allocated on the heap and will be cleaned up by this class

void defaultPWMAudioOutputCallback ( )

friend

separate method that can be defined as friend so that we can access protected information

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