86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
#include <rockos/keyboard.h>
|
|
#include <rockos/pic.h>
|
|
#include <rockos/timer.h>
|
|
#include <rockos/hal.h>
|
|
#include <string.h>
|
|
|
|
#define ESC_P 0x01
|
|
#define BACKSPACE_P 0x0F
|
|
#define ENTER_P 0x1C
|
|
#define LEFT_C_P 0x1D
|
|
#define LEFT_SHIFT_P 0x2B
|
|
#define RIGHT_SHIFT_P 0x36
|
|
#define LEFT_ALT_P 0x38
|
|
#define CAPS_LCK_P 0x3A
|
|
|
|
static unsigned char interrupt_key;
|
|
static uint8_t keyset[89];
|
|
static uint64_t keytimes[89];
|
|
|
|
static unsigned char keymap[89] = {
|
|
0, ESC_P, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', BACKSPACE_P,
|
|
'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', ENTER_P, LEFT_C_P,
|
|
'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', '`', LEFT_SHIFT_P, '\\',
|
|
'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', RIGHT_SHIFT_P, '*', LEFT_ALT_P, ' ', CAPS_LCK_P
|
|
};
|
|
|
|
void initialize_keyset() {
|
|
//for(int i = 0; i < 89; ++i) keyset[i] = 0;
|
|
memset(keyset, 0, 89);
|
|
memset(keytimes, 0, 89);
|
|
}
|
|
|
|
__attribute__((interrupt)) void keyboard_handler(void* frame) {
|
|
interrupt_key = inb(0x60);
|
|
pic_eoi(1);
|
|
if((interrupt_key & 128) == 128){
|
|
keyset[interrupt_key - 0x80] = 0;
|
|
keytimes[interrupt_key - 0x80] = 0;
|
|
} else {
|
|
if(keyset[interrupt_key] == 2)
|
|
return;
|
|
keyset[interrupt_key] = 1;
|
|
}
|
|
}
|
|
|
|
unsigned char readkey() {
|
|
uint8_t shift_pressed = 0;
|
|
if (keyset[LEFT_SHIFT_P] || keyset[RIGHT_SHIFT_P])
|
|
shift_pressed = 1;
|
|
|
|
for(uint8_t i = 0; i < 89; ++i) {
|
|
switch(i) {
|
|
case ESC_P:
|
|
case LEFT_C_P:
|
|
case LEFT_SHIFT_P:
|
|
case RIGHT_SHIFT_P:
|
|
case LEFT_ALT_P:
|
|
case CAPS_LCK_P:
|
|
continue;
|
|
}
|
|
if (keyset[i]){
|
|
uint64_t temptime = get_ticks();
|
|
if(keytimes[i]) {
|
|
if(keyset[i] == 1) {
|
|
if(temptime - keytimes[i] < 20) {
|
|
return 0;
|
|
} else {
|
|
keyset[i] = 2;
|
|
//return 0;
|
|
}
|
|
} else {
|
|
if(temptime - keytimes[i] < 5) {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
keytimes[i] = temptime;
|
|
if (shift_pressed && (keymap[i] > 0x60 && keymap[i] < 0x7A)) {
|
|
return keymap[i] - 0x20;
|
|
} else {
|
|
return keymap[i];
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
} |