Utilities.h File Reference

Wiring-inspired utility functions and macros. More...

#include "Bela.h"

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Macros
#define	INPUT   0x0
#define	OUTPUT   0x1

Functions
static float	map (float x, float in_min, float in_max, float out_min, float out_max)
	Linearly rescale a number from one range of values to another. More...
static float	constrain (float x, float min_val, float max_val)
	Constrain a number to stay within a given range. More...
static float	min (float x, float y)
	Returns the maximum of two numbers. More...
static float	max (float x, float y)
	Returns the minimum of two numbers. More...
static float	audioRead (BelaContext *context, int frame, int channel)
	Read an audio input, specifying the frame number (when to read) and the channel. More...
static void	audioWrite (BelaContext *context, int frame, int channel, float value)
	Write an audio output, specifying the frame number (when to write) and the channel. More...
static float	analogRead (BelaContext *context, int frame, int channel)
	Read an analog input, specifying the frame number (when to read) and the channel. More...
static void	analogWrite (BelaContext *context, int frame, int channel, float value)
	Write an analog output, specifying the frame number (when to write) and the channel. More...
static void	analogWriteOnce (BelaContext *context, int frame, int channel, float value)
	Write an analog output, specifying the frame number (when to write) and the channel. More...
static int	digitalRead (BelaContext *context, int frame, int channel)
	Read a digital input, specifying the frame number (when to read) and the pin. More...
static void	digitalWrite (BelaContext *context, int frame, int channel, int value)
	Write a digital output, specifying the frame number (when to write) and the pin. More...
static void	digitalWriteOnce (BelaContext *context, int frame, int channel, int value)
	Write a digital output, specifying the frame number (when to write) and the pin. More...
static void	pinMode (BelaContext *context, int frame, int channel, int mode)
	Set the direction of a digital pin to input or output. More...
static void	pinModeOnce (BelaContext *context, int frame, int channel, int mode)
	Set the direction of a digital pin to input or output. More...

Detailed Description

Wiring-inspired utility functions and macros.

Macros and functions for I/O and data processing taking after the Wiring (Arduino) language. This code began as part of the Hackable Instruments project (EPSRC) at Queen Mary University of London, 2013-14.

(c) 2014-15 Andrew McPherson, Victor Zappi and Giulio Moro, Queen Mary University of London