sbl::components::cv::CvInput Class Reference

Smoothed CV input emitting normalized signal units. More...

Detailed Description

Smoothed CV input emitting normalized signal units.

Note

update()/update_dma() are ISR-safe (pure state machine, atomic 32-bit EWMA state on Cortex-M). Call update from exactly one context; getters are safe from another.

Definition at line 93 of file input.hpp.

#include <input.hpp>

Public Member Functions
	CvInput (const CvInputConfig &config={})
	CvInput (Smoothing smoothing)
void	update (uint16_t raw)
	Feed a new raw ADC sample.
void	update_dma (const uint16_t *buffer, uint8_t channel_index)
	Read one channel from a DMA scan buffer and update.
uint16_t	raw () const
	Last raw (unfiltered) ADC count — for calibration routines.
float	value () const
	Smoothed output in signal units, per the configured mapping.
void	set_mapping (CvMapping mapping)
	Set the jack's musical role (structural; runtime-remappable)
CvMapping	mapping () const
void	set_conditioning (const CvConditioning &cond)
	Set the analog front-end description (once at init, typically)
const CvConditioning &	conditioning () const
void	set_smoothing (Smoothing smoothing)
	Change smoothing level without resetting filter state.
void	reset ()
	Reset filter state.

Static Public Attributes
static constexpr float	kSuPerVolt = 0.125f
	Pitch-su convention: 1.0 su spans 8 octaves (MIDI 24–120), 1 V/oct.

Constructor & Destructor Documentation

CvInput() [1/2]

sbl::components::cv::CvInput::CvInput ( const CvInputConfig &  config = {} )

inlineexplicit

Definition at line 98 of file input.hpp.

CvInput() [2/2]

sbl::components::cv::CvInput::CvInput ( Smoothing  smoothing )

inlineexplicit

Definition at line 101 of file input.hpp.

Member Function Documentation

update()

void sbl::components::cv::CvInput::update ( uint16_t  raw )

inline

Feed a new raw ADC sample.

Definition at line 105 of file input.hpp.

References raw(), and sbl::primitives::math::Ewma::update().

Referenced by update_dma().

update_dma()

void sbl::components::cv::CvInput::update_dma ( const uint16_t *  buffer, uint8_t  channel_index  )

inline

Read one channel from a DMA scan buffer and update.

Volatile cast forces a real memory read — DMA updates the buffer asynchronously. ISR-safe, non-blocking.

Definition at line 116 of file input.hpp.

References update().

raw()

uint16_t sbl::components::cv::CvInput::raw ( ) const

inline

Last raw (unfiltered) ADC count — for calibration routines.

Definition at line 121 of file input.hpp.

Referenced by update().

value()

float sbl::components::cv::CvInput::value ( ) const

inline

Smoothed output in signal units, per the configured mapping.

Definition at line 124 of file input.hpp.

References sbl::primitives::math::Ewma::value().

set_mapping()

void sbl::components::cv::CvInput::set_mapping ( CvMapping  mapping )

inline

Set the jack's musical role (structural; runtime-remappable)

Definition at line 127 of file input.hpp.

References mapping().

mapping()

CvMapping sbl::components::cv::CvInput::mapping ( ) const

inline

Definition at line 129 of file input.hpp.

Referenced by set_mapping().

set_conditioning()

void sbl::components::cv::CvInput::set_conditioning ( const CvConditioning &  cond )

inline

Set the analog front-end description (once at init, typically)

Definition at line 132 of file input.hpp.

conditioning()

const CvConditioning & sbl::components::cv::CvInput::conditioning ( ) const

inline

Definition at line 134 of file input.hpp.

set_smoothing()

void sbl::components::cv::CvInput::set_smoothing ( Smoothing  smoothing )

inline

Change smoothing level without resetting filter state.

Definition at line 137 of file input.hpp.

References sbl::primitives::math::Ewma::set_shift().

reset()

void sbl::components::cv::CvInput::reset ( )

inline

Reset filter state.

Definition at line 142 of file input.hpp.

References sbl::primitives::math::Ewma::reset().

Member Data Documentation

kSuPerVolt

constexpr float sbl::components::cv::CvInput::kSuPerVolt = 0.125f

staticconstexpr

Pitch-su convention: 1.0 su spans 8 octaves (MIDI 24–120), 1 V/oct.

Definition at line 96 of file input.hpp.

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

• src/sbl/hw/components/cv/input.hpp