162 lines
4.1 KiB
C
162 lines
4.1 KiB
C
#include "../include/keyboard.h"
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#include <stdbool.h>
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#include "../include/task.h"
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#include "../include/string.h"
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char stdin_buffer[STDIN_BUFFER_SIZE];
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int stdin_pos = 0;
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bool stdin_has_line = false;
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unsigned char kbdus[128] =
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{
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0, 27, '1', '2', '3', '4', '5', '6', '7', '8', /* 9 */
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'9', '0', '-', '=', '\b', /* Backspace */
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'\t', /* Tab */
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'q', 'w', 'e', 'r', /* 19 */
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't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', /* Enter key */
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0, /* 29 - Control */
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'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* 39 */
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'\'', '`', 0, /* Left shift */
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'\\', 'z', 'x', 'c', 'v', 'b', 'n', /* 49 */
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'm', ',', '.', '/', 0, /* Right shift */
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'*',
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0, /* Alt */
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' ', /* Space bar */
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0, /* Caps lock */
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0, /* 59 - F1 key ... > */
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0, 0, 0, 0, 0, 0, 0, 0,
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0, /* < ... F10 */
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0, /* 69 - Num lock*/
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0, /* Scroll Lock */
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0, /* Home key */
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0, /* Up Arrow */
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0, /* Page Up */
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'-',
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0, /* Left Arrow */
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0,
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0, /* Right Arrow */
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'+',
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0, /* 79 - End key*/
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0, /* Down Arrow */
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0, /* Page Down */
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0, /* Insert Key */
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0, /* Delete Key */
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0, 0, 0,
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0, /* F11 Key */
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0, /* F12 Key */
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0, /* All other keys are undefined */
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};
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unsigned char kbdus2[128] =
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{
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0, 27, '!', '@', '#', '$', '%', '^', '&', '*', /* 9 */
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'(', ')', '_', '+', '\b', /* Backspace */
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'\t', /* Tab */
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'Q', 'W', 'E', 'R', /* 19 */
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'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n', /* Enter key */
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0, /* 29 - Control */
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'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', /* 39 */
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'\'', '`', 0, /* Left shift */
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'\\', 'Z', 'X', 'C', 'V', 'B', 'N', /* 49 */
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'M', '<', '>', '?', 0, /* Right shift */
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'*',
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0, /* Alt */
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' ', /* Space bar */
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0, /* Caps lock */
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0, /* 59 - F1 key ... > */
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0, 0, 0, 0, 0, 0, 0, 0,
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0, /* < ... F10 */
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0, /* 69 - Num lock*/
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0, /* Scroll Lock */
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0, /* Home key */
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0, /* Up Arrow */
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0, /* Page Up */
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'-',
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0, /* Left Arrow */
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0,
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0, /* Right Arrow */
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'+',
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0, /* 79 - End key*/
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0, /* Down Arrow */
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0, /* Page Down */
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0, /* Insert Key */
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0, /* Delete Key */
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0, 0, 0,
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0, /* F11 Key */
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0, /* F12 Key */
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0, /* All other keys are undefined */
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};
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bool shift_pressed;
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bool caps_pressed;
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void keyboard_wait();
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void handle_keyboard() {
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uint8_t scancode = inb(0x60);
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if (scancode & 0x80) { // Released
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scancode -= 0x80;
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if (scancode == 0x2A || scancode == 0x36) shift_pressed = false;
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} else { // Pressed
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if (scancode == 0x2A || scancode == 0x36) {
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shift_pressed = true;
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return;
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}
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if (scancode == 0x3A) { // Caps
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return;
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}
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char c;
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if (shift_pressed || caps_pressed) c = kbdus2[scancode];
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else c = kbdus[scancode];
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if (c == '\b') { //Backspace
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if (stdin_pos > 0) {
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stdin_pos--;
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printf("\b \b");
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}
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} else if (c == '\n') { // Enter
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if (stdin_pos < STDIN_BUFFER_SIZE - 1) {
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stdin_buffer[stdin_pos++] = '\n';
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printf("\n");
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}
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stdin_has_line = true;
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// Wake-up: wake up all Waiting tasks on STDIN
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scheduler_lock();
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Process *p = queue;
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while (p) {
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if (p->state == Waiting && p->waiting_reason == STDIN) {
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p->state = Ready;
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p->waiting_reason = NONE;
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}
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p = p->next;
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}
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scheduler_unlock();
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} else if (c != 0 && stdin_pos < STDIN_BUFFER_SIZE - 1) {//if printable
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stdin_buffer[stdin_pos++] = c;
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printf("%c", c);//echo
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}
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}
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}
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void init_keyboard()
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{
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memset(stdin_buffer, 0, STDIN_BUFFER_SIZE);
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stdin_pos = 0;
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stdin_has_line = false;
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}
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void keyboard_wait()
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{
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int status;
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while(1)
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{
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status = inb(0x60);
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if(status == 0xfa || status == 0xfe)
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return;
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}
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}
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