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teensy-cores/teensy3/usb_mouse.c

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  1. /* Teensyduino Core Library

  2.  * http://www.pjrc.com/teensy/

  3.  * Copyright (c) 2013 PJRC.COM, LLC.

  4.  *

  5.  * Permission is hereby granted, free of charge, to any person obtaining

  6.  * a copy of this software and associated documentation files (the

  7.  * "Software"), to deal in the Software without restriction, including

  8.  * without limitation the rights to use, copy, modify, merge, publish,

  9.  * distribute, sublicense, and/or sell copies of the Software, and to

  10.  * permit persons to whom the Software is furnished to do so, subject to

  11.  * the following conditions:

  12.  *

  13.  * 1. The above copyright notice and this permission notice shall be

  14.  * included in all copies or substantial portions of the Software.

  15.  *

  16.  * 2. If the Software is incorporated into a build system that allows

  17.  * selection among a list of target devices, then similar target

  18.  * devices manufactured by PJRC.COM must be included in the list of

  19.  * target devices and selectable in the same manner.

  20.  *

  21.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

  22.  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

  23.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

  24.  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

  25.  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

  26.  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

  27.  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

  28.  * SOFTWARE.

  29.  */

  30. 

  31. #include "usb_dev.h"

  32. #include "usb_mouse.h"

  33. #include "core_pins.h" // for yield()

  34. #include "HardwareSerial.h"

  35. #include <string.h> // for memcpy()

  36. 

  37. #ifdef MOUSE_INTERFACE // defined by usb_dev.h -> usb_desc.h

  38. 

  39. // which buttons are currently pressed

  40. uint8_t usb_mouse_buttons_state=0;

  41. 

  42. //#define DEFAULT_XRES 640

  43. //#define DEFAULT_YRES 480

  44. 

  45. //#define DEFAULT_XRES 800

  46. //#define DEFAULT_YRES 600

  47. 

  48. //#define DEFAULT_XRES 1024

  49. //#define DEFAULT_YRES 768

  50. 

  51. //#define DEFAULT_XRES 1280

  52. //#define DEFAULT_YRES 720

  53. 

  54. //#define DEFAULT_XRES 1280

  55. //#define DEFAULT_YRES 800

  56. 

  57. #define DEFAULT_XRES 1366

  58. #define DEFAULT_YRES 768

  59. 

  60. //#define DEFAULT_XRES 1440

  61. //#define DEFAULT_YRES 900

  62. 

  63. //#define DEFAULT_XRES 1920

  64. //#define DEFAULT_YRES 1080

  65. 

  66. //#define DEFAULT_XRES 2560

  67. //#define DEFAULT_YRES 1440

  68. 

  69. //#define DEFAULT_XRES 2560

  70. //#define DEFAULT_YRES 1600

  71. 

  72. //#define DEFAULT_XRES 2880

  73. //#define DEFAULT_YRES 1800

  74. 

  75. //#define DEFAULT_XRES 3840

  76. //#define DEFAULT_YRES 2160

  77. 

  78. //#define DEFAULT_XRES 7680

  79. //#define DEFAULT_YRES 4320

  80. 

  81. 

  82. #define DEFAULT_XSCALE ((0x80000000ul+DEFAULT_XRES/2)/DEFAULT_XRES)

  83. #define DEFAULT_YSCALE ((0x80000000ul+DEFAULT_YRES/2)/DEFAULT_YRES)

  84. 

  85. static uint16_t usb_mouse_resolution_x=DEFAULT_XRES;

  86. static uint16_t usb_mouse_resolution_y=DEFAULT_YRES;

  87. static uint16_t usb_mouse_position_x=DEFAULT_XRES/2;

  88. static uint16_t usb_mouse_position_y=DEFAULT_YRES/2;

  89. static uint32_t usb_mouse_scale_x=DEFAULT_XSCALE;

  90. static uint32_t usb_mouse_scale_y=DEFAULT_YSCALE;

  91. static uint32_t usb_mouse_offset_x=DEFAULT_XSCALE/2-1;

  92. static uint32_t usb_mouse_offset_y=DEFAULT_YSCALE/2-1;

  93. 

  94. 

  95. // Set the mouse buttons.  To create a "click", 2 calls are needed,

  96. // one to push the button down and the second to release it

  97. int usb_mouse_buttons(uint8_t left, uint8_t middle, uint8_t right)

  98. {

  99.         uint8_t mask=0;

  100. 

  101.         if (left) mask |= 1;

  102.         if (middle) mask |= 4;

  103.         if (right) mask |= 2;

  104.         usb_mouse_buttons_state = mask;

  105.         return usb_mouse_move(0, 0, 0);

  106. }

  107. 

  108. 

  109. // Maximum number of transmit packets to queue so we don't starve other endpoints for memory

  110. #define TX_PACKET_LIMIT 3

  111. 

  112. static uint8_t transmit_previous_timeout=0;

  113. 

  114. // When the PC isn't listening, how long do we wait before discarding data?

  115. #define TX_TIMEOUT_MSEC 30

  116. 

  117. #if F_CPU == 168000000

  118.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1100)

  119. #elif F_CPU == 144000000

  120.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 932)

  121. #elif F_CPU == 120000000

  122.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 764)

  123. #elif F_CPU == 96000000

  124.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 596)

  125. #elif F_CPU == 72000000

  126.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 512)

  127. #elif F_CPU == 48000000

  128.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 428)

  129. #elif F_CPU == 24000000

  130.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 262)

  131. #endif

  132. 

  133. 

  134. // Move the mouse.  x, y and wheel are -127 to 127.  Use 0 for no movement.

  135. int usb_mouse_move(int8_t x, int8_t y, int8_t wheel)

  136. {

  137.         uint32_t wait_count=0;

  138.         usb_packet_t *tx_packet;

  139. 

  140.         //serial_print("move");

  141.         //serial_print("\n");

  142.         if (x == -128) x = -127;

  143.         if (y == -128) y = -127;

  144.         if (wheel == -128) wheel = -127;

  145. 

  146.         while (1) {

  147.                 if (!usb_configuration) {

  148.                         return -1;

  149.                 }

  150.                 if (usb_tx_packet_count(MOUSE_ENDPOINT) < TX_PACKET_LIMIT) {

  151.                         tx_packet = usb_malloc();

  152.                         if (tx_packet) break;

  153.                 }

  154.                 if (++wait_count > TX_TIMEOUT || transmit_previous_timeout) {

  155.                         transmit_previous_timeout = 1;

  156.                         return -1;

  157.                 }

  158.                 yield();

  159.         }

  160.         transmit_previous_timeout = 0;

  161.         *(tx_packet->buf + 0) = 1;

  162.         *(tx_packet->buf + 1) = usb_mouse_buttons_state;

  163.         *(tx_packet->buf + 2) = x;

  164.         *(tx_packet->buf + 3) = y;

  165.         *(tx_packet->buf + 4) = wheel;

  166.         tx_packet->len = 5;

  167.         usb_tx(MOUSE_ENDPOINT, tx_packet);

  168.         return 0;

  169. }

  170. 

  171. int usb_mouse_position(uint16_t x, uint16_t y)

  172. {

  173.         uint32_t wait_count=0, val32;

  174.         usb_packet_t *tx_packet;

  175. 

  176. 	if (x >= usb_mouse_resolution_x) x = usb_mouse_resolution_x - 1;

  177. 	usb_mouse_position_x = x;

  178. 	if (y >= usb_mouse_resolution_y) y = usb_mouse_resolution_y - 1;

  179. 	usb_mouse_position_y = y;

  180. 

  181.         while (1) {

  182.                 if (!usb_configuration) {

  183.                         return -1;

  184.                 }

  185.                 if (usb_tx_packet_count(MOUSE_ENDPOINT) < TX_PACKET_LIMIT) {

  186.                         tx_packet = usb_malloc();

  187.                         if (tx_packet) break;

  188.                 }

  189.                 if (++wait_count > TX_TIMEOUT || transmit_previous_timeout) {

  190.                         transmit_previous_timeout = 1;

  191.                         return -1;

  192.                 }

  193.                 yield();

  194.         }

  195. 	transmit_previous_timeout = 0;

  196. 	*(tx_packet->buf + 0) = 2;

  197. 	val32 = usb_mouse_position_x * usb_mouse_scale_x + usb_mouse_offset_x;

  198. 	 //serial_print("position:");

  199. 	 //serial_phex16(usb_mouse_position_x);

  200. 	 //serial_print("->");

  201. 	 //serial_phex32(val32);

  202. 	*(tx_packet->buf + 1) = val32 >> 16;

  203. 	*(tx_packet->buf + 2) = val32 >> 24;

  204. 	val32 = usb_mouse_position_y * usb_mouse_scale_y + usb_mouse_offset_y;

  205. 	 //serial_print(",");

  206. 	 //serial_phex16(usb_mouse_position_y);

  207. 	 //serial_print("->");

  208. 	 //serial_phex32(val32);

  209. 	 //serial_print("\n");

  210. 	*(tx_packet->buf + 3) = val32 >> 16;

  211. 	*(tx_packet->buf + 4) = val32 >> 24;

  212. 	tx_packet->len = 5;

  213. 	usb_tx(MOUSE_ENDPOINT, tx_packet);

  214.         return 0;

  215. }

  216. 

  217. void usb_mouse_screen_size(uint16_t width, uint16_t height, uint8_t mac)

  218. {

  219. 	if (width < 128) width = 128;

  220. 	else if (width > 7680) width = 7680;

  221. 	if (height < 128) height = 128;

  222. 	else if (height > 7680) height = 7680;

  223. 	usb_mouse_resolution_x = width;

  224. 	usb_mouse_resolution_y = height;

  225. 	usb_mouse_position_x = width / 2;

  226. 	usb_mouse_position_y = height / 2;

  227. 	usb_mouse_scale_x = (0x80000000ul + (width >> 1)) / width;

  228. 	usb_mouse_scale_y = (0x80000000ul + (height >> 1)) / height;

  229. 	usb_mouse_offset_x = (usb_mouse_scale_x >> 1) - 1;

  230. 	usb_mouse_offset_y = (usb_mouse_scale_y >> 1) - 1;

  231. 	if (mac) {

  232. 		// ugly workaround for Mac's HID coordinate scaling:

  233. 		// http://lists.apple.com/archives/usb/2011/Jun/msg00032.html

  234. 		usb_mouse_offset_x += 161061273ul;

  235. 		usb_mouse_offset_y += 161061273ul;

  236. 		usb_mouse_scale_x = (1825361101ul + (width >> 1)) / width;

  237. 		usb_mouse_scale_y = (1825361101ul + (height >> 1)) / height;

  238. 	}

  239. }

  240. 

  241. 

  242. 

  243. #endif // MOUSE_INTERFACE