BelaInitSettings Struct Reference

Structure containing initialisation parameters for the real-time audio control system. More...

#include <Bela.h>

Public Attributes
int	periodSize
	Number of (analog) frames per period. More...
int	useAnalog
	Whether to use the analog input and output.
int	useDigital
	Whether to use the 16 programmable GPIOs.
int	numAudioInChannels
	How many audio input channels.
int	numAudioOutChannels
	How many audio out channels.
int	numAnalogInChannels
	How many analog input channels.
int	numAnalogOutChannels
	How many analog output channels.
int	numDigitalChannels
	How many channels for the GPIOs.
int	beginMuted
	Whether to begin with the speakers muted.
float	dacLevel
	Level for the audio DAC output.
float	adcLevel
	Level for the audio ADC input.
float	pgaGain [2]
	Gains for the PGA, left and right channels.
float	headphoneLevel
	Level for the headphone output.
int	numMuxChannels
	How many channels to use on the multiplexer capelet, if enabled.
int	pruNumber
	Which PRU (0 or 1) the code should run on.
char	pruFilename [MAX_PRU_FILENAME_LENGTH]
	The external .bin file to load. If empty will use PRU code from pru_rtaudio_bin.h.
int	verbose
	Whether to use verbose logging.
int	interleave
	Whether audio/analog data should be interleaved.
int	analogOutputsPersist
	Whether analog outputs should persist to future frames. More...
int	codecI2CAddress
	Where the codec can be found on the I2C bus.
int	ampMutePin
	Pin where amplifier mute can be found.
int	receivePort
	Port where the UDP server will listen.
int	transmitPort
	Port where the UDP client will transmit.
char	serverName [MAX_SERVERNAME_LENGTH]

Detailed Description

Structure containing initialisation parameters for the real-time audio control system.

This structure is initialised using Bela_defaultSettings(). Its contents are used up through the point of calling Bela_initAudio() at which point it is no longer needed.

Member Data Documentation

int BelaInitSettings::periodSize

Number of (analog) frames per period.

Number of audio frames depends on relative sample rates of the two. By default, audio is twice the sample rate, so has twice the period size.

int BelaInitSettings::analogOutputsPersist

Whether analog outputs should persist to future frames.

n.b. digital pins always persist, audio never does

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

• Bela.h