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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*
Copyright 2014 Robin Haberkorn <robin.haberkorn@googlemail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <avr/io.h>
#include <util/delay.h>
#include "serial.h"
#include "serial_mouse.h"
#include "report.h"
#include "host.h"
#include "timer.h"
#include "print.h"
#include "debug.h"
#ifdef MAX
#undef MAX
#endif
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
//#define SERIAL_MOUSE_CENTER_SCROLL
static void print_usb_data(const report_mouse_t *report);
void serial_mouse_task(void)
{
/* 5 byte ring buffer */
static uint8_t buffer[5];
static int buffer_cur = 0;
int16_t rcv;
report_mouse_t report = {0, 0, 0, 0, 0};
rcv = serial_recv2();
if (rcv < 0)
/* no new data */
return;
if (debug_mouse)
xprintf("serial_mouse: byte: %04X\n", rcv);
/*
* Synchronization: mouse(4) says that all
* bytes but the first one in the packet have
* bit 7 == 0, but this is untrue.
* Therefore we discard all bytes up to the
* first one with the characteristic bit pattern.
*/
if (buffer_cur == 0 && (rcv >> 3) != 0x10)
return;
buffer[buffer_cur++] = (uint8_t)rcv;
if (buffer_cur < 5)
return;
buffer_cur = 0;
#ifdef SERIAL_MOUSE_CENTER_SCROLL
if ((buffer[0] & 0x7) == 0x5 && (buffer[1] || buffer[2])) {
/* USB HID uses only values from -127 to 127 */
report.h = MAX((int8_t)buffer[1], -127);
report.v = MAX((int8_t)buffer[2], -127);
print_usb_data(&report);
host_mouse_send(&report);
if (buffer[3] || buffer[4]) {
report.h = MAX((int8_t)buffer[3], -127);
report.v = MAX((int8_t)buffer[4], -127);
print_usb_data(&report);
host_mouse_send(&report);
}
return;
}
#endif
/*
* parse 5 byte packet.
* NOTE: We only get a complete packet
* if the mouse moved or the button states
* change.
*/
if (!(buffer[0] & (1 << 2)))
report.buttons |= MOUSE_BTN1;
if (!(buffer[0] & (1 << 1)))
report.buttons |= MOUSE_BTN3;
if (!(buffer[0] & (1 << 0)))
report.buttons |= MOUSE_BTN2;
/* USB HID uses only values from -127 to 127 */
report.x = MAX((int8_t)buffer[1], -127);
report.y = MAX(-(int8_t)buffer[2], -127);
print_usb_data(&report);
host_mouse_send(&report);
if (buffer[3] || buffer[4]) {
report.x = MAX((int8_t)buffer[3], -127);
report.y = MAX(-(int8_t)buffer[4], -127);
print_usb_data(&report);
host_mouse_send(&report);
}
}
static void print_usb_data(const report_mouse_t *report)
{
if (!debug_mouse)
return;
xprintf("serial_mouse usb: [%02X|%d %d %d %d]\n",
report->buttons, report->x, report->y,
report->v, report->h);
}
|
