]>
git.gir.st - tmk_keyboard.git/blob - tmk_core/protocol/serial_mouse_microsoft.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 static void print_usb_data(const report_mouse_t
*report
);
37 void serial_mouse_task(void)
39 /* 3 byte ring buffer */
40 static uint8_t buffer
[3];
41 static int buffer_cur
= 0;
43 static report_mouse_t report
= {};
53 xprintf("serial_mouse: byte: %04X\n", rcv
);
56 * If bit 6 is one, this signals the beginning
57 * of a 3 byte sequence/packet.
62 buffer
[buffer_cur
] = (uint8_t)rcv
;
64 if (buffer_cur
== 0 && buffer
[buffer_cur
] == 0x20) {
66 * Logitech extension: This must be a follow-up on
67 * the last 3-byte packet signaling a middle button click
69 report
.buttons
|= MOUSE_BTN3
;
70 report
.x
= report
.y
= 0;
72 print_usb_data(&report
);
73 host_mouse_send(&report
);
84 * parse 3 byte packet.
85 * NOTE: We only get a complete packet
86 * if the mouse moved or the button states
90 if (buffer
[0] & (1 << 5))
91 report
.buttons
|= MOUSE_BTN1
;
92 if (buffer
[0] & (1 << 4))
93 report
.buttons
|= MOUSE_BTN2
;
95 report
.x
= (buffer
[0] << 6) | buffer
[1];
96 report
.y
= ((buffer
[0] << 4) & 0xC0) | buffer
[2];
98 /* USB HID uses values from -127 to 127 only */
99 report
.x
= MAX(report
.x
, -127);
100 report
.y
= MAX(report
.y
, -127);
103 if (!report
.buttons
&& !report
.x
&& !report
.y
) {
105 * Microsoft extension: Middle mouse button pressed
106 * FIXME: I don't know how exactly this extension works.
108 report
.buttons
|= MOUSE_BTN3
;
112 print_usb_data(&report
);
113 host_mouse_send(&report
);
116 static void print_usb_data(const report_mouse_t
*report
)
121 xprintf("serial_mouse usb: [%02X|%d %d %d %d]\n",
122 report
->buttons
, report
->x
, report
->y
,
123 report
->v
, report
->h
);