Nathan Singer
af92026a74
I added some work on a keyboard driver here also changed the emulation system, since bochs was giving me headaches when it came to keyboard input added some todo stuff.. probably some cleanup, idk
96 lines
1.8 KiB
C
96 lines
1.8 KiB
C
#include <stdbool.h>
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#include <stdint.h>
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#include <queue.h>
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#ifdef __TESTING__
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#include <kernel/_kernel.h>
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#include <stdio.h>
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#endif
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#include <kernel/x86/keyb.h>
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#include <kernel/x86/io.h>
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bool is_shift_down = false;
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queue kb_cmd_queue;
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// current plan is to create a a multi d array
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//
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//
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// 16 entries each for each scan code... so
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// 0x01..0x0F (15)/ this is the top row, so esc - 1..0, etc
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// 0x10..0x1F (16) ...
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// 0x20..0x2F ...
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// these arrays will keep a 0/1 flag to see if these keys are pressed
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// as a stort of state machine
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// this will also let us tell multiple keys pressed
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//
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// another more simple version, which i could start with
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//
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// is do a Single character as currently pressed
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// and a bitflag we can mask for leftshift, leftctrl, right shift, right ctrl, alt, etc being pressed down
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//
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//
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//
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struct keyboard_state keyb_state;
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void init_kb(void)
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{
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#ifdef __TESTING__
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puts("Initializing keyboard driver!");
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#endif
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init_queue(&kb_cmd_queue);
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keyb_state.leds = 0;
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queue_kb_command(KEYB_CMD_ENABLE_SCANNING);
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queue_kb_command(KEYB_CMD_SET_DEFAULT_PARAMS);
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//queue_kb_command(KEYB_CMD_SET_TYPEMATIC);
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//queue_kb_command(0x1F);
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send_kb_commands();
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#ifdef __TESTING__
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puts("Initialized keyboard driver!");
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#endif
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}
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void queue_kb_command(uint8_t command)
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{enqueue(&kb_cmd_queue, command);}
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void send_kb_commands(void)
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{
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int i;
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uint8_t resp, cmd;
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while (!queue_is_empty(&kb_cmd_queue)) {
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cmd = queue_peek(&kb_cmd_queue);
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for (i = 0; i < KEYB_CMD_RETRIES; i++) {
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outb(KEYB_PORT, cmd);
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io_wait();
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resp = inb(KEYB_PORT);
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io_wait();
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switch(resp) {
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case KEYB_RESP_ACK:
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break;
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case KEYB_RESP_RESEND:
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continue;
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default:
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break;
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}
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}
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dequeue(&kb_cmd_queue);
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}
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}
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kb_key_press_t decode_scancode(uint8_t scancode)
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{return (kb_key_press_t) scancode;}
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