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279
SWPiGPIO.cpp
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279
SWPiGPIO.cpp
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/***************************************************************************
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source::worx PiGPIO
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Copyright © 2022 c.holzheuer
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chris@sourceworx.org
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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***************************************************************************/
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#include <QtGlobal>
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#include <QDebug>
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#include <SWPiGPIO.h>
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#ifdef Q_OS_LINUX
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#include <cstdint>
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//#include <pigpio.h>
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//#include "/usr/include/pigpio.h"
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#include <pigpiod_if2.h>
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PiGPIO::PiGPIO()
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{
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//::gpioInitialise();
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// Connect to Pi.
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constexpr char* optHost = nullptr;
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constexpr char* optPort = nullptr;
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PI = ::pigpio_start( optHost, optPort );
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qDebug() << " -- PiGPIO::PiGPIO(): " << PI;
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if( PI < 0 )
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qDebug() << "-- PiGPIO::PiGPIO() FAIL";
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}
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PiGPIO::~PiGPIO()
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{
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::pigpio_stop( PI );
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}
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//----------------------------------------------
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/**
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* @brief Implementierung für Linux
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*/
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PiGRotaryDial::PiGRotaryDial( unsigned dialA, unsigned dialB, unsigned button, QObject* parent )
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: QObject( parent ),
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_dialA( dialA ), _dialB( dialB ), _button( button )
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{
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_Pi = PiGPIO::Instance().PI;
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//_mode = mode;
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//_cb = cb_func;
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_levA = 0;
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_levB = 0;
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_step = 0;
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::set_mode( _Pi, _dialA, PI_INPUT );
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::set_mode( _Pi, _dialB, PI_INPUT );
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::set_mode( _Pi, _button, PI_INPUT );
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// pull up is needed as encoder common is grounded
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::set_pull_up_down( _Pi, _dialA, PI_PUD_UP );
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::set_pull_up_down( _Pi, _dialB, PI_PUD_UP );
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::set_pull_up_down( _Pi, _button, PI_PUD_UP );
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_glitch = 1000;
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::set_glitch_filter( _Pi, _dialA, _glitch );
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::set_glitch_filter( _Pi, _dialB, _glitch );
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::set_glitch_filter( _Pi, _button, _glitch );
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_oldState = ( ::gpio_read( _Pi, _dialA ) << 1) | ::gpio_read( _Pi, _dialB );
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// monitor encoder level changes
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//int callback_ex(int pi, unsigned user_gpio, unsigned edge, CBFuncEx_t f, void *userdata)
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// typedef void (*CBFuncEx_t)(int pi, unsigned user_gpio, unsigned level, uint32_t tick, void * userdata);
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_callbackIdA = ::callback_ex( _Pi, _dialA, EITHER_EDGE, PiGPIOPulse, this );
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_callbackIdB = ::callback_ex( _Pi, _dialB, EITHER_EDGE, PiGPIOPulse, this );
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_callbackIdC = ::callback_ex( _Pi, _button, EITHER_EDGE, PiGPIOPulse, this );
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}
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PiGRotaryDial::~PiGRotaryDial()
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{
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if( _callbackIdA >= 0 )
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{
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::callback_cancel( _callbackIdA );
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_callbackIdA = -1;
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}
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if( _callbackIdB >= 0 )
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{
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::callback_cancel( _callbackIdB );
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_callbackIdB = -1;
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}
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if( _callbackIdC >= 0 )
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{
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::callback_cancel( _callbackIdC );
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_callbackIdC = -1;
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}
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::set_glitch_filter( _Pi, _dialA, 0 );
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::set_glitch_filter( _Pi, _dialB, 0 );
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::set_glitch_filter( _Pi, _button, 0 );
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}
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void PiGRotaryDial::setGlitchFilter( int glitch )
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{
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if( _glitch == glitch )
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return;
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_glitch = glitch;
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::set_glitch_filter( _Pi, _dialA, glitch );
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::set_glitch_filter( _Pi, _dialB, glitch );
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::set_glitch_filter( _Pi, _button, glitch );
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}
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void PiGRotaryDial::pulse( unsigned gpio, unsigned level )
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{
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if( level == PI_TIMEOUT )
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return;
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if( gpio == _button )
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return handleClick( level );
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if( gpio == _dialA )
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_levA = level;
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else
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_levB = level;
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// sourceworx proudly presents:
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// den primitivstmöglichen Auslese-algorithmus
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// für Rotary-Dials.
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// Die klugen Varianten stehen hier:
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// https://www.best-microcontroller-projects.com/rotary-encoder.html
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// https://web.engr.oregonstate.edu/~traylor/ece473/student_projects/ReadingEncoderSwitches.pdf
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// wenn sich was geändert hatte ...
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if( gpio == _dialB && level == 1 )
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{
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// bestimmt der andere Kontakt die
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// die Drehrichtung
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int delta = _levA ? -1 : +1;
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//qDebug() << "###### EMIT: " << delta;
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emit deltaChanged( delta );
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}
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}
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void PiGRotaryDial::handleClick( unsigned level )
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{
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if( !_pressed && level == 0 )
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{
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_pressed = true;
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return;
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}
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if( _pressed && level == 1 )
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{
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_pressed = false;
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emit clicked();
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}
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}
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#endif // Q_OS_LINUX
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/***************************************************************************
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source::worx PiGPIO
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Copyright © 2022 c.holzheuer
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chris@sourceworx.org
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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***************************************************************************/
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#ifdef Q_OS_WIN
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PiGPIO::PiGPIO()
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{
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}
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PiGPIO::~PiGPIO()
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{
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}
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PiGRotaryDial::PiGRotaryDial( unsigned dialA, unsigned dialB, unsigned button, QObject* parent )
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: QObject( parent ),
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_dialA( dialA ), _dialB( dialB ), _button( button )
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{
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}
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PiGRotaryDial::~PiGRotaryDial()
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{
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}
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void PiGRotaryDial::setGlitchFilter( int )
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{
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}
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void PiGRotaryDial::pulse( unsigned, unsigned )
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{
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}
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#endif //Q_OS_WIN
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/***************************************************************************
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source::worx PiGPIO
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Copyright © 2022 c.holzheuer
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chris@sourceworx.org
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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***************************************************************************/
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void PiGRotaryDial::PiGPIOPulse( int pi, unsigned gpio, unsigned level, uint32_t tick, void *user )
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{
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Q_UNUSED( pi );
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Q_UNUSED( tick );
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// Need a static callback to link with C.
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PiGRotaryDial* mySelf = static_cast<PiGRotaryDial*>( user );
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if( mySelf )
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mySelf->pulse( gpio, level ); // Call the instance callback.
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}
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/*
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void PiGRotaryDial::setPosition( int position )
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{
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_step = position * 4;
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}
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int PiGRotaryDial::position()
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{
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return _step / 4;
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}
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*/
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