ead0e1523f
Caps lock now works as caps lock, not as shift lock. This new design will allow implementing a working tty, such that stdin is the only way to access the keyboard, instead of the current hacky way of using a special system call to read from the keyboard. Added a new system header file <sys/keycodes.h> defining the constants for every key on the keyboard. This will be used in future APIs. The main change is to split the keyboard driver into a class that reads from the keyboard, while another class handles the translation into printable characters (if possible). This allows a terminal driver based on logical key presses and printable characters, instead of a terminal driver based only on unicode-ish codes.
70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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kb/ps2.h
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A driver for the PS2 Keyboard.
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******************************************************************************/
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#ifndef SORTIX_KB_PS2_H
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#define SORTIX_KB_PS2_H
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#include "../keyboard.h"
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namespace Sortix
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{
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class PS2Keyboard : public Keyboard
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{
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public:
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PS2Keyboard(uint16_t iobase, uint8_t interrupt);
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virtual ~PS2Keyboard();
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virtual int Read();
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virtual size_t GetPending() const;
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virtual bool HasPending() const;
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virtual void SetOwner(KeyboardOwner* owner, void* user);
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public:
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void OnInterrupt(CPU::InterruptRegisters* regs);
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private:
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uint8_t PopScancode();
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int DecodeScancode(uint8_t scancode);
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void UpdateLEDs(int ledval);
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bool PushKey(int key);
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int PopKey();
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void NotifyOwner();
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private:
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int* queue;
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size_t queuelength;
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size_t queueoffset;
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size_t queueused;
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KeyboardOwner* owner;
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void* ownerptr;
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uint16_t iobase;
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uint8_t interrupt;
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bool scancodeescaped;
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uint8_t leds;
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};
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}
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#endif
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