]>
git.gir.st - tmk_keyboard.git/blob - tmk_core/protocol/serial_mouse_mousesystems.c
2 Copyright 2014 Robin Haberkorn <robin.haberkorn@googlemail.com>
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #include <util/delay.h>
23 #include "serial_mouse.h"
33 #define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
35 //#define SERIAL_MOUSE_CENTER_SCROLL
37 static void print_usb_data(const report_mouse_t
*report
);
39 void serial_mouse_task(void)
41 /* 5 byte ring buffer */
42 static uint8_t buffer
[5];
43 static int buffer_cur
= 0;
47 report_mouse_t report
= {0, 0, 0, 0, 0};
55 xprintf("serial_mouse: byte: %04X\n", rcv
);
58 * Synchronization: mouse(4) says that all
59 * bytes but the first one in the packet have
60 * bit 7 == 0, but this is untrue.
61 * Therefore we discard all bytes up to the
62 * first one with the characteristic bit pattern.
64 if (buffer_cur
== 0 && (rcv
>> 3) != 0x10)
67 buffer
[buffer_cur
++] = (uint8_t)rcv
;
73 #ifdef SERIAL_MOUSE_CENTER_SCROLL
74 if ((buffer
[0] & 0x7) == 0x5 && (buffer
[1] || buffer
[2])) {
75 /* USB HID uses only values from -127 to 127 */
76 report
.h
= MAX((int8_t)buffer
[1], -127);
77 report
.v
= MAX((int8_t)buffer
[2], -127);
79 print_usb_data(&report
);
80 host_mouse_send(&report
);
82 if (buffer
[3] || buffer
[4]) {
83 report
.h
= MAX((int8_t)buffer
[3], -127);
84 report
.v
= MAX((int8_t)buffer
[4], -127);
86 print_usb_data(&report
);
87 host_mouse_send(&report
);
95 * parse 5 byte packet.
96 * NOTE: We only get a complete packet
97 * if the mouse moved or the button states
100 if (!(buffer
[0] & (1 << 2)))
101 report
.buttons
|= MOUSE_BTN1
;
102 if (!(buffer
[0] & (1 << 1)))
103 report
.buttons
|= MOUSE_BTN3
;
104 if (!(buffer
[0] & (1 << 0)))
105 report
.buttons
|= MOUSE_BTN2
;
107 /* USB HID uses only values from -127 to 127 */
108 report
.x
= MAX((int8_t)buffer
[1], -127);
109 report
.y
= MAX(-(int8_t)buffer
[2], -127);
111 print_usb_data(&report
);
112 host_mouse_send(&report
);
114 if (buffer
[3] || buffer
[4]) {
115 report
.x
= MAX((int8_t)buffer
[3], -127);
116 report
.y
= MAX(-(int8_t)buffer
[4], -127);
118 print_usb_data(&report
);
119 host_mouse_send(&report
);
123 static void print_usb_data(const report_mouse_t
*report
)
128 xprintf("serial_mouse usb: [%02X|%d %d %d %d]\n",
129 report
->buttons
, report
->x
, report
->y
,
130 report
->v
, report
->h
);