blob: 15522f6fea7b0094e6579294a27d9dda9288e0fd (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
#include "../../interrupts/interrupts.h"
#include "../../io/io.h"
#include "../../graphics/vesa.h"
char mouse_cycle = 0;
signed char mouse_byte[3];
signed char mouse_x = 0;
signed char mouse_y = 0;
int mouse_but_1 = 0;
int mouse_but_2 = 0;
void mouse_handler(struct regs *a_r) {
switch (mouse_cycle) {
case 0:
mouse_byte[0] = receive_b(0x60);
mouse_cycle++;
break;
case 1:
mouse_byte[1] = receive_b(0x60);
mouse_cycle++;
break;
case 2:
mouse_byte[2] = receive_b(0x60);
mouse_x = mouse_byte[1];
mouse_y = mouse_byte[2];
mouse_but_1 = (mouse_byte[0] % 2);
mouse_but_2 = ((mouse_byte[0] % 4) - (mouse_byte[0] % 2)) / 2;
mouse_cycle = 0;
break;
default:
break;
}
if (mouse_but_1 == 1)
vesa_draw_string("CLICK!\n");
}
void mouse_wait(unsigned char a_type) {
unsigned int time_out = 100000;
if (a_type == 0) {
while (time_out--)
if ((receive_b(0x64) & 1) == 1)
return;
return;
} else {
while (time_out--)
if ((receive_b(0x64) & 2) == 0)
return;
return;
}
}
void mouse_write(unsigned char a_write) {
mouse_wait(1);
send_b(0x64, 0xD4);
mouse_wait(1);
send_b(0x60, a_write);
}
char mouse_read() {
mouse_wait(0);
return receive_b(0x60);
}
void mouse_install() {
unsigned char status;
// Enable auxiliary mouse device
mouse_wait(1);
send_b(0x64, 0xA8);
// Enable interrupts
mouse_wait(1);
send_b(0x64, 0x20);
mouse_wait(0);
status = (receive_b(0x60) | 2);
mouse_wait(1);
send_b(0x64, 0x60);
mouse_wait(1);
send_b(0x60, status);
// Use default settings
mouse_write(0xF6);
mouse_read();
// Enable mouse
mouse_write(0xF4);
mouse_read();
// Setup the mouse handler
irq_install_handler(2, mouse_handler);
}
|
