1 /* Teensyduino Core Library
2 * http://www.pjrc.com/teensy/
3 * Copyright (c) 2013 PJRC.COM, LLC.
4 * Modified by Jacob Alexander (2015-2016)
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * 1. The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
17 * 2. If the Software is incorporated into a build system that allows
18 * selection among a list of target devices, then similar target
19 * devices manufactured by PJRC.COM must be included in the list of
20 * target devices and selectable in the same manner.
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
26 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
27 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
28 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 // ----- Includes -----
35 #include <string.h> // for memcpy()
38 #include <Lib/OutputLib.h>
43 #include "usb_mouse.h"
47 // ----- Defines -----
49 // Maximum number of transmit packets to queue so we don't starve other endpoints for memory
50 #define TX_PACKET_LIMIT 3
52 // When the PC isn't listening, how long do we wait before discarding data?
53 #define TX_TIMEOUT_MSEC 30
55 #if F_CPU == 168000000
56 #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1100)
57 #elif F_CPU == 144000000
58 #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 932)
59 #elif F_CPU == 120000000
60 #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 764)
61 #elif F_CPU == 96000000
62 #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 596)
63 #elif F_CPU == 72000000
64 #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 512)
65 #elif F_CPU == 48000000
66 #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 428)
67 #elif F_CPU == 24000000
68 #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 262)
71 //#define DEFAULT_XRES 640
72 //#define DEFAULT_YRES 480
74 //#define DEFAULT_XRES 800
75 //#define DEFAULT_YRES 600
77 //#define DEFAULT_XRES 1024
78 //#define DEFAULT_YRES 768
80 //#define DEFAULT_XRES 1280
81 //#define DEFAULT_YRES 720
83 //#define DEFAULT_XRES 1280
84 //#define DEFAULT_YRES 800
86 #define DEFAULT_XRES 1366
87 #define DEFAULT_YRES 768
89 //#define DEFAULT_XRES 1440
90 //#define DEFAULT_YRES 900
92 //#define DEFAULT_XRES 1920
93 //#define DEFAULT_YRES 1080
95 //#define DEFAULT_XRES 2560
96 //#define DEFAULT_YRES 1440
98 //#define DEFAULT_XRES 2560
99 //#define DEFAULT_YRES 1600
101 //#define DEFAULT_XRES 2880
102 //#define DEFAULT_YRES 1800
104 //#define DEFAULT_XRES 3840
105 //#define DEFAULT_YRES 2160
107 //#define DEFAULT_XRES 7680
108 //#define DEFAULT_YRES 4320
111 #define DEFAULT_XSCALE ((0x80000000ul+DEFAULT_XRES/2)/DEFAULT_XRES)
112 #define DEFAULT_YSCALE ((0x80000000ul+DEFAULT_YRES/2)/DEFAULT_YRES)
116 // ----- Variables -----
118 static uint8_t transmit_previous_timeout = 0;
120 // which buttons are currently pressed
121 uint8_t usb_mouse_buttons_state = 0;
123 static uint16_t usb_mouse_resolution_x = DEFAULT_XRES;
124 static uint16_t usb_mouse_resolution_y = DEFAULT_YRES;
125 static uint16_t usb_mouse_position_x = DEFAULT_XRES / 2;
126 static uint16_t usb_mouse_position_y = DEFAULT_YRES / 2;
127 static uint32_t usb_mouse_scale_x = DEFAULT_XSCALE;
128 static uint32_t usb_mouse_scale_y = DEFAULT_YSCALE;
129 static uint32_t usb_mouse_offset_x = DEFAULT_XSCALE / 2 - 1;
130 static uint32_t usb_mouse_offset_y = DEFAULT_YSCALE / 2 - 1;
134 // ----- Functions -----
136 // Process pending mouse commands
137 // XXX Missing mouse movement and wheels
138 // Proper support will require KLL generation of the USB descriptors
139 // Similar support will be required for joystick control
140 void usb_mouse_send()
142 uint32_t wait_count = 0;
143 usb_packet_t *tx_packet;
148 if ( !usb_configuration )
150 erro_print("USB not configured...");
154 // Attempt to acquire a USB packet for the mouse endpoint
155 if ( usb_tx_packet_count( MOUSE_ENDPOINT ) < TX_PACKET_LIMIT )
157 tx_packet = usb_malloc();
162 if ( ++wait_count > TX_TIMEOUT || transmit_previous_timeout )
164 transmit_previous_timeout = 1;
165 warn_print("USB Transmit Timeout...");
171 transmit_previous_timeout = 0;
173 // Prepare USB Mouse Packet
174 // TODO Document each byte
175 // TODO Dynamically generate this code based on KLL requirements
176 *(tx_packet->buf + 0) = USBMouse_Buttons;
177 *(tx_packet->buf + 1) = 0;
178 *(tx_packet->buf + 2) = 0;
179 *(tx_packet->buf + 3) = 0;
180 *(tx_packet->buf + 4) = 0;
182 usb_tx( MOUSE_ENDPOINT, tx_packet );
184 // Clear status and state
185 USBMouse_Buttons = 0;
186 USBMouse_Changed = 0;
190 // Move the mouse. x, y and wheel are -127 to 127. Use 0 for no movement.
191 int usb_mouse_move(int8_t x, int8_t y, int8_t wheel)
193 uint32_t wait_count=0;
194 usb_packet_t *tx_packet;
196 //serial_print("move");
197 //serial_print("\n");
198 if (x == -128) x = -127;
199 if (y == -128) y = -127;
200 if (wheel == -128) wheel = -127;
203 if (!usb_configuration) {
206 if (usb_tx_packet_count(MOUSE_ENDPOINT) < TX_PACKET_LIMIT) {
207 tx_packet = usb_malloc();
208 if (tx_packet) break;
210 if (++wait_count > TX_TIMEOUT || transmit_previous_timeout) {
211 transmit_previous_timeout = 1;
216 transmit_previous_timeout = 0;
217 *(tx_packet->buf + 0) = 1;
218 *(tx_packet->buf + 1) = usb_mouse_buttons_state;
219 *(tx_packet->buf + 2) = x;
220 *(tx_packet->buf + 3) = y;
221 *(tx_packet->buf + 4) = wheel;
223 usb_tx(MOUSE_ENDPOINT, tx_packet);
227 int usb_mouse_position(uint16_t x, uint16_t y)
229 uint32_t wait_count=0, val32;
230 usb_packet_t *tx_packet;
232 if (x >= usb_mouse_resolution_x) x = usb_mouse_resolution_x - 1;
233 usb_mouse_position_x = x;
234 if (y >= usb_mouse_resolution_y) y = usb_mouse_resolution_y - 1;
235 usb_mouse_position_y = y;
238 if (!usb_configuration) {
241 if (usb_tx_packet_count(MOUSE_ENDPOINT) < TX_PACKET_LIMIT) {
242 tx_packet = usb_malloc();
243 if (tx_packet) break;
245 if (++wait_count > TX_TIMEOUT || transmit_previous_timeout) {
246 transmit_previous_timeout = 1;
251 transmit_previous_timeout = 0;
252 *(tx_packet->buf + 0) = 2;
253 val32 = usb_mouse_position_x * usb_mouse_scale_x + usb_mouse_offset_x;
254 //serial_print("position:");
255 //serial_phex16(usb_mouse_position_x);
256 //serial_print("->");
257 //serial_phex32(val32);
258 *(tx_packet->buf + 1) = val32 >> 16;
259 *(tx_packet->buf + 2) = val32 >> 24;
260 val32 = usb_mouse_position_y * usb_mouse_scale_y + usb_mouse_offset_y;
262 //serial_phex16(usb_mouse_position_y);
263 //serial_print("->");
264 //serial_phex32(val32);
265 //serial_print("\n");
266 *(tx_packet->buf + 3) = val32 >> 16;
267 *(tx_packet->buf + 4) = val32 >> 24;
269 usb_tx(MOUSE_ENDPOINT, tx_packet);
273 void usb_mouse_screen_size(uint16_t width, uint16_t height, uint8_t mac)
275 if (width < 128) width = 128;
276 else if (width > 7680) width = 7680;
277 if (height < 128) height = 128;
278 else if (height > 7680) height = 7680;
279 usb_mouse_resolution_x = width;
280 usb_mouse_resolution_y = height;
281 usb_mouse_position_x = width / 2;
282 usb_mouse_position_y = height / 2;
283 usb_mouse_scale_x = (0x80000000ul + (width >> 1)) / width;
284 usb_mouse_scale_y = (0x80000000ul + (height >> 1)) / height;
285 usb_mouse_offset_x = (usb_mouse_scale_x >> 1) - 1;
286 usb_mouse_offset_y = (usb_mouse_scale_y >> 1) - 1;
288 // ugly workaround for Mac's HID coordinate scaling:
289 // http://lists.apple.com/archives/usb/2011/Jun/msg00032.html
290 usb_mouse_offset_x += 161061273ul;
291 usb_mouse_offset_y += 161061273ul;
292 usb_mouse_scale_x = (1825361101ul + (width >> 1)) / width;
293 usb_mouse_scale_y = (1825361101ul + (height >> 1)) / height;