memtest86plus/system/keyboard.h
2020-05-24 21:30:55 +01:00

27 lines
762 B
C

// SPDX-License-Identifier: GPL-2.0
#ifndef KEYBOARD_H
#define KEYBOARD_H
/*
* Provides the keyboard interface. It converts incoming key codes to
* ASCII characters.
*
* Copyright (C) 2020 Martin Whitaker.
*/
/*
* The Escape character.
*/
#define ESC 27
/*
* Checks if a key has been pressed and returns the primary ASCII character
* corresponding to that key if so, otherwise returns the null character.
* F1 to F10 are mapped to the corresponding decimal digit (F10 -> 0). All
* other keys that don't have a corresponding ASCII character are ignored.
* Characters are only returned for key presses, not key releases. A US
* keyboard layout is assumed (because we can't easily do anything else).
*/
char get_key(void);
#endif // KEYBOARD_H