213 lines
4.4 KiB
C
213 lines
4.4 KiB
C
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#include "keyboard.h"
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#include "ports.h"
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#include "../cpu/isr.h"
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#include "screen.h"
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#include "../kernel/util.h"
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void init_keyboard() {
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register_interrupt_handler(IRQ1, keyboard_callback);
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}
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void print_letter(u8 scancode) {
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switch (scancode) {
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case 0x0:
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kprint("ERROR");
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break;
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case 0x1:
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kprint("ESC");
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break;
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case 0x2:
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kprint("1");
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break;
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case 0x3:
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kprint("2");
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break;
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case 0x4:
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kprint("3");
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break;
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case 0x5:
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kprint("4");
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break;
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case 0x6:
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kprint("5");
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break;
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case 0x7:
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kprint("6");
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break;
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case 0x8:
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kprint("7");
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break;
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case 0x9:
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kprint("8");
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break;
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case 0x0A:
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kprint("9");
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break;
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case 0x0B:
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kprint("0");
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break;
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case 0x0C:
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kprint("-");
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break;
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case 0x0D:
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kprint("+");
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break;
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case 0x0E:
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kprint("Backspace");
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break;
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case 0x0F:
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kprint("Tab");
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break;
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case 0x10:
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kprint("Q");
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break;
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case 0x11:
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kprint("W");
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break;
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case 0x12:
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kprint("E");
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break;
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case 0x13:
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kprint("R");
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break;
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case 0x14:
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kprint("T");
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break;
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case 0x15:
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kprint("Y");
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break;
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case 0x16:
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kprint("U");
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break;
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case 0x17:
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kprint("I");
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break;
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case 0x18:
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kprint("O");
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break;
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case 0x19:
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kprint("P");
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break;
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case 0x1A:
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kprint("[");
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break;
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case 0x1B:
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kprint("]");
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break;
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case 0x1C:
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kprint("ENTER");
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break;
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case 0x1D:
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kprint("LCtrl");
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break;
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case 0x1E:
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kprint("A");
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break;
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case 0x1F:
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kprint("S");
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break;
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case 0x20:
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kprint("D");
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break;
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case 0x21:
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kprint("F");
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break;
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case 0x22:
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kprint("G");
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break;
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case 0x23:
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kprint("H");
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break;
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case 0x24:
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kprint("J");
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break;
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case 0x25:
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kprint("K");
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break;
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case 0x26:
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kprint("L");
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break;
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case 0x27:
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kprint(";");
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break;
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case 0x28:
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kprint("'");
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break;
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case 0x29:
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kprint("`");
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break;
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case 0x2A:
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kprint("LShift");
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break;
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case 0x2B:
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kprint("\\");
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break;
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case 0x2C:
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kprint("Z");
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break;
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case 0x2D:
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kprint("X");
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break;
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case 0x2E:
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kprint("C");
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break;
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case 0x2F:
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kprint("V");
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break;
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case 0x30:
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kprint("B");
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break;
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case 0x31:
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kprint("N");
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break;
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case 0x32:
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kprint("M");
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break;
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case 0x33:
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kprint(",");
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break;
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case 0x34:
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kprint(".");
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break;
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case 0x35:
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kprint("/");
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break;
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case 0x36:
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kprint("Rshift");
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break;
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case 0x37:
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kprint("Keypad *");
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break;
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case 0x38:
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kprint("LAlt");
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break;
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case 0x39:
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kprint("Spc");
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break;
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default:
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/* 'keuyp' event corresponds to the 'keydown' + 0x80
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* it may still be a scancode we haven't implemented yet, or
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* maybe a control/escape sequence */
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if (scancode <= 0x7f) {
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kprint("Unknown key down");
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} else if (scancode <= 0x39 + 0x80) {
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kprint("key up ");
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print_letter(scancode - 0x80);
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} else kprint("Unknown key up");
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break;
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}
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}
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static void keyboard_callback(registers_t regs) {
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/* The PIC leaves us the scancode in port 0x60 */
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u8 scancode = port_byte_in(0x60);
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char *sc_ascii;
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int_to_ascii(scancode, sc_ascii);
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kprint("Keyboard scancode: ");
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kprint(sc_ascii);
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kprint(", ");
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print_letter(scancode);
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kprint("\n");
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}
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