kopia lustrzana https://github.com/OpenRTX/OpenRTX
81 wiersze
2.9 KiB
C
81 wiersze
2.9 KiB
C
/***************************************************************************
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* Copyright (C) 2020 - 2023 by Federico Amedeo Izzo IU2NUO, *
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* Niccolò Izzo IU2KIN, *
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* Silvano Seva IU2KWO *
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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 3 of the License, or *
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* (at your option) 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; if not, see <http://www.gnu.org/licenses/> *
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***************************************************************************/
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#ifndef INPUT_H
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#define INPUT_H
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#include <interfaces/keyboard.h>
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#include <inttypes.h>
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#include <stdbool.h>
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/**
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* Time interval in milliseconds after which a keypress is considered a long-press
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*/
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static const uint16_t input_longPressTimeout = 700;
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/**
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* Structure that represents a keyboard event payload
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* The maximum size of an event payload is 30 bits
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* For a keyboard event we use 1 bit to signal a short or long press
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* And the remaining 29 bits to communicate currently pressed keys.
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*/
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typedef union
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{
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struct
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{
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uint32_t long_press : 1,
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keys : 29,
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_padding : 2;
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};
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uint32_t value;
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}
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kbd_msg_t;
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/**
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* Scan all the keyboard buttons to detect possible keypresses filling a
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* keyboard event data structure. The function returns true if a keyboard event
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* has been detected.
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*
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* @param msg: keyboard event message to be filled.
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* @return true if a keyboard event has been detected, false otherwise.
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*/
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bool input_scanKeyboard(kbd_msg_t *msg);
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/**
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* This function returns true if at least one number is pressed on the
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* keyboard.
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*
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* @param msg: the keyboard queue message
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* @return true if at least a number is pressed on the keyboard
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*/
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bool input_isNumberPressed(kbd_msg_t msg);
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/**
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* This function returns the smallest number that is pressed on the keyboard,
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* 0 if none is pressed.
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*
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* @param msg: the keyboard queue message
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* @return the smalled pressed number on the keyboard
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*/
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uint8_t input_getPressedNumber(kbd_msg_t msg);
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#endif /* INPUT_H */
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