diff options
Diffstat (limited to 'src/kernel/arch/i386/tty/keyboard.c')
| -rw-r--r-- | src/kernel/arch/i386/tty/keyboard.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/kernel/arch/i386/tty/keyboard.c b/src/kernel/arch/i386/tty/keyboard.c new file mode 100644 index 0000000..628c3a0 --- /dev/null +++ b/src/kernel/arch/i386/tty/keyboard.c @@ -0,0 +1,117 @@ +#include <kernel/arch/i386/tty/keyboard.h> + +static volatile bool keyboard_pressed = false; +static volatile char keyboard_char; + +static bool keys[0x80] = {0}; + +void keyboard_recv(char s) { + char c = 0, d = 0; + bool down = !(s & 0x80); + keys[s & 0x7f] = down; + + switch (s & 0x7f) { + case 0x01: /* esc */ break; + case 0x02: c = '1'; d = '!'; break; + case 0x03: c = '2'; d = '@'; break; + case 0x04: c = '3'; d = '#'; break; + case 0x05: c = '4'; d = '$'; break; + case 0x06: c = '5'; d = '%'; break; + case 0x07: c = '6'; d = '^'; break; + case 0x08: c = '7'; d = '&'; break; + case 0x09: c = '8'; d = '*'; break; + case 0x0A: c = '9'; d = '('; break; + case 0x0B: c = '0'; d = ')'; break; + case 0x0C: c = '-'; d = '_'; break; + case 0x0D: c = '='; d = '+'; break; + case 0x0E: c = '\b'; d = '\b'; break; + case 0x0F: c = '\t'; d = '\t'; break; + case 0x10: c = 'q'; d = 'Q'; break; + case 0x11: c = 'w'; d = 'W'; break; + case 0x12: c = 'e'; d = 'E'; break; + case 0x13: c = 'r'; d = 'R'; break; + case 0x14: c = 't'; d = 'T'; break; + case 0x15: c = 'y'; d = 'Y'; break; + case 0x16: c = 'u'; d = 'U'; break; + case 0x17: c = 'i'; d = 'I'; break; + case 0x18: c = 'o'; d = 'O'; break; + case 0x19: c = 'p'; d = 'P'; break; + case 0x1A: c = '['; d = '{'; break; + case 0x1B: c = ']'; d = '}'; break; + case 0x1C: c = '\r'; d = '\r'; break; + case 0x1D: /*lctrl*/ break; + case 0x1E: c = 'a'; d = 'A'; break; + case 0x1F: c = 's'; d = 'S'; break; + case 0x20: c = 'd'; d = 'D'; break; + case 0x21: c = 'f'; d = 'F'; break; + case 0x22: c = 'g'; d = 'G'; break; + case 0x23: c = 'h'; d = 'H'; break; + case 0x24: c = 'j'; d = 'J'; break; + case 0x25: c = 'k'; d = 'K'; break; + case 0x26: c = 'l'; d = 'L'; break; + case 0x27: c = ';'; d = ':'; break; + case 0x28: c = '\''; d = '"'; break; + case 0x29: c = '`'; d = '~'; break; + case 0x2A: /*lshift */ break; + case 0x2B: c = '\\'; d = '|'; break; + case 0x2C: c = 'z'; d = 'Z'; break; + case 0x2D: c = 'x'; d = 'X'; break; + case 0x2E: c = 'c'; d = 'C'; break; + case 0x2F: c = 'v'; d = 'V'; break; + case 0x30: c = 'b'; d = 'B'; break; + case 0x31: c = 'n'; d = 'N'; break; + case 0x32: c = 'm'; d = 'M'; break; + case 0x33: c = ','; d = '<'; break; + case 0x34: c = '.'; d = '>'; break; + case 0x35: c = '/'; d = '?'; break; + case 0x36: /*rshift*/ break; + case 0x38: /*lalt*/ break; + case 0x39: c = ' '; d = ' '; break; + case 0x3A: /*caps*/ break; + case 0x3B: /* F1 */ break; + case 0x3C: /* F2 */ break; + case 0x3D: /* F3 */ break; + case 0x3E: /* F4 */ break; + case 0x3F: /* F5 */ break; + case 0x40: /* F6 */ break; + case 0x41: /* F7 */ break; + case 0x42: /* F8 */ break; + case 0x43: /* F9 */ break; + case 0x44: /* F10 */ break; + case 0x45: /*numlock*/ break; + case 0x46: /*scroll^*/ break; + case 0x57: /* F11 */ break; + case 0x58: /* F12 */ break; + + /* keypad */ + case 0x37: c = '*'; d = '*'; break; + case 0x47: c = '7'; d = '7'; break; + case 0x48: c = '8'; d = '8'; break; + case 0x49: c = '9'; d = '9'; break; + case 0x4A: c = '-'; d = '-'; break; + case 0x4B: c = '4'; d = '4'; break; + case 0x4C: c = '5'; d = '5'; break; + case 0x4D: c = '6'; d = '6'; break; + case 0x4E: c = '+'; d = '+'; break; + case 0x4F: c = '1'; d = '1'; break; + case 0x50: c = '2'; d = '2'; break; + case 0x51: c = '3'; d = '3'; break; + case 0x52: c = '0'; d = '0'; break; + case 0x53: c = '.'; d = '.'; break; + } + + if (c && down) { + bool shift = keys[0x2A] || keys[0x36]; + keyboard_pressed = true; + keyboard_char = shift ? d : c; + } +} + +bool keyboard_poll_read(char *c) { + if (!keyboard_pressed) return false; + keyboard_pressed = false; + *c = keyboard_char; + return true; +} + + |