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https://github.com/eried/portapack-mayhem.git
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06b7a0419e
* Resolve button responsiveness * Resolve button responsiveness * Clang * Clang * Clang try again * Removed unnecessary lines * Address review comments * Add comments per reviewer suggestion * Clang test * Clang retry
68 lines
2.7 KiB
C++
68 lines
2.7 KiB
C++
/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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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, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __DEBOUNCE_H__
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#define __DEBOUNCE_H__
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#include <cstdint>
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// consecutive # of times button input must be same (<=8)
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#define DEBOUNCE_COUNT 4
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#define DEBOUNCE_MASK ((1 << DEBOUNCE_COUNT) - 1)
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// # of timer0 ticks before a held button starts being counted as repeated presses
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#define REPEAT_INITIAL_DELAY 250
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#define REPEAT_SUBSEQUENT_DELAY 92
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#define LONG_PRESS_DELAY 800
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class Debounce {
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public:
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bool feed(const uint8_t bit);
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uint8_t state();
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void enable_repeat();
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bool get_long_press_enabled() const;
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void set_long_press_enabled(bool v);
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bool long_press_occurred();
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private:
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uint8_t history_{0}; // shift register of last 8 reads from button hardware state bit
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uint8_t state_{0}; // actual button hardware state (after debounce logic), 1=pressed
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uint8_t state_to_report_{0}; // pseudo button state reported by state() function (may be masked off or simulated presses)
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bool repeat_enabled_{false}; // TRUE if this button is enabled to auto-repeat when held down (ignored if long_press_enabled)
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uint16_t repeat_ctr_{0}; // used for timing auto-repeat simulated button presses when button is held down and repeat_enabled
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uint16_t held_time_{0}; // number of ticks that the button has been held down (compared against REPEAT and LONG_PRESS delays)
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bool pulse_upon_release_{false}; // TRUE when button is being held down when long_press_enabled and LONG_PRESS_DELAY hasn't been reached yet
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bool simulated_pulse_{false}; // TRUE if a simulated button press is active following a short button press (only when long_press_enabled)
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bool long_press_enabled_{false}; // TRUE when button is in long-press mode (takes precedence over the repeat_enabled flag)
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bool long_press_occurred_{false}; // TRUE when button is being held down and LONG_PRESS_DELAY has been reached (only when long_press_enabled)
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};
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#endif /*__DEBOUNCE_H__*/
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