Bananymous
28bd9cf353
If we cannot determine current scancode set because either the keyboard does not respond or responds with bogus value, assume scancode set 1 and mark the scancode set as uncertain. If we receive the byte 0xF0 while having the uncertain flag set, swap to scancode set 2. 0xF0 is unused in scancode set 1 but indicates key release in scancode set 2, so it will be sent after every key press.
49 lines
1.0 KiB
C++
49 lines
1.0 KiB
C++
#pragma once
|
|
|
|
#include <BAN/Array.h>
|
|
#include <kernel/Input/PS2/Device.h>
|
|
#include <kernel/Input/PS2/Keymap.h>
|
|
|
|
namespace Kernel::Input
|
|
{
|
|
|
|
class PS2Keyboard final : public PS2Device
|
|
{
|
|
private:
|
|
enum Command : uint8_t
|
|
{
|
|
SET_LEDS = 0xED,
|
|
CONFIG_SCANCODE_SET = 0xF0
|
|
};
|
|
|
|
public:
|
|
static BAN::ErrorOr<BAN::RefPtr<PS2Keyboard>> create(PS2Controller&, uint8_t scancode_set);
|
|
virtual void send_initialize() override;
|
|
|
|
virtual void command_timedout(uint8_t* command_data, uint8_t command_size) final override;
|
|
|
|
virtual void handle_byte(uint8_t) final override;
|
|
|
|
virtual void update() final override { m_controller.update_command_queue(); }
|
|
|
|
private:
|
|
PS2Keyboard(PS2Controller& controller, bool basic);
|
|
|
|
void update_leds();
|
|
|
|
private:
|
|
BAN::Array<uint8_t, 3> m_byte_buffer;
|
|
uint8_t m_byte_index { 0 };
|
|
bool m_basic { false };
|
|
|
|
bool m_scancode_set_uncertain { false };
|
|
uint8_t m_scancode_set { 0xFF };
|
|
uint16_t m_modifiers { 0 };
|
|
|
|
PS2Keymap m_keymap;
|
|
|
|
friend class BAN::RefPtr<PS2Keyboard>;
|
|
};
|
|
|
|
}
|