77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/* Reflow Oven Controller
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*
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* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
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*
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* This file is part of the Reflow Oven Controller Project.
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*
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* The reflow oven controller is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* The Reflow Oven Control Firmware 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 the reflow oven controller project.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __BUTTON_H__
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#define __BUTTON_H__
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/**
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* @brief GPIO Port the button is connected to
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*/
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#define BUTTON_PORT GPIOD
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/**
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* @brief The RCC clock mask for @ref BUTTON_PORT
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*/
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#define BUTTON_RCC_MASK RCC_AHB1ENR_GPIODEN
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/**
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* @brief The GPIO pin number the button is connected to
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*/
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#define BUTTON_PIN 4
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/**
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* @brief The time in ms the button has to stay pressed to be detected as a short press
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*/
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#define BUTTON_SHORT_ON_TIME_MS 50UL
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/**
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* @brief Time in ms the button has to be pressed to be counted as a long press
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*/
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#define BUTTON_LONG_ON_TIME_MS 400UL
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#if BUTTON_LONG_ON_TIME_MS <= BUTTON_SHORT_ON_TIME_MS
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#error "Button BUTTON_SHORT_ON_TIME_MS time has to be shorter than BUTTON_LONG_ON_TIME_MS"
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#endif
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/**
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* @brief States the puhsbutton of the rotary encoder can be in
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*/
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enum button_state {BUTTON_IDLE = 0, BUTTON_SHORT_RELEASED, BUTTON_LONG_RELEASED, BUTTON_SHORT, BUTTON_LONG};
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/**
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* @brief Init the push button
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*/
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void button_init();
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/**
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* @brief read if a push button event occured
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* @return Button event
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*/
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enum button_state button_read_event();
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/**
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* @brief button_deinit
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*/
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void button_deinit();
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#endif /* __BUTTON_H__ */
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