title: daisy::AnalogControl summary: Hardware Interface for control inputs Primarily designed for ADC input controls such as potentiometers, and control voltage. .

daisy::AnalogControl¶

Module: LIBDAISY / HUMAN_INTERFACE / CONTROLS

Hardware Interface for control inputs Primarily designed for ADC input controls such as potentiometers, and control voltage. . More...

#include <ctrl.h>

Public Functions¶

	Name
	AnalogControl()
	~AnalogControl()
void	Init(uint16_t * adcptr, float sr, bool flip =false, bool invert =false, float slew_seconds =0.002f)
void	InitBipolarCv(uint16_t * adcptr, float sr)
float	Process()
float	Value() const
void	SetCoeff(float val)
uint16_t	GetRawValue()
float	GetRawFloat()
void	SetSampleRate(float sample_rate)

Detailed Description¶

class daisy::AnalogControl;

Hardware Interface for control inputs Primarily designed for ADC input controls such as potentiometers, and control voltage. .

Author: Stephen Hensley

Date: November 2019

Public Functions Documentation¶

function AnalogControl¶

inline AnalogControl()

Constructor

function ~AnalogControl¶

inline ~AnalogControl()

destructor

function Init¶

void Init(
    uint16_t * adcptr,
    float sr,
    bool flip =false,
    bool invert =false,
    float slew_seconds =0.002f
)

Parameters:

***adcptr** is a pointer to the raw adc read value – This can be acquired with dsy_adc_get_rawptr(), or dsy_adc_get_mux_rawptr()
sr is the samplerate in Hz that the Process function will be called at.
flip determines whether the input is flipped (i.e. 1.f - input) or not before being processed.1
invert determines whether the input is inverted (i.e. -1.f * input) or note before being processed.
slew_seconds is the slew time in seconds that it takes for the control to change to a new value.

Initializes the control

function InitBipolarCv¶

void InitBipolarCv(
    uint16_t * adcptr,
    float sr
)

Parameters:

***adcptr** Pointer to analog digital converter
sr Audio engine sample rate

This Initializes the AnalogControl for a -5V to 5V inverted input All of the Init details are the same otherwise

function Process¶

float Process()

Filters, and transforms a raw ADC read into a normalized range. this should be called at the rate of specified by samplerate at Init time.

Default Initializations will return 0.0 -> 1.0 Bi-polar CV inputs will return -1.0 -> 1.0

function Value¶

inline float Value() const

Returns the current stored value, without reprocessing

function SetCoeff¶

inline void SetCoeff(
    float val
)

Parameters:

val Value to set coefficient to. Max of 1, min of 0.

Directly set the Coefficient of the one pole smoothing filter.

function GetRawValue¶

inline uint16_t GetRawValue()

Returns the raw unsigned 16-bit value from the ADC

function GetRawFloat¶

inline float GetRawFloat()

Returns a normalized float value representing the current ADC value.

function SetSampleRate¶

void SetSampleRate(
    float sample_rate
)

Parameters:

sample_rate New update rate for the switch in hz

Set a new sample rate after the ctrl has been initialized

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Updated on 2024-01-03 at 19:41:01 +0000