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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. #if F_CPU >= 20000000

  39. 

  40. // which buttons are currently pressed

  41. uint8_t usb_mouse_buttons_state=0;

  42. 

  43. //#define DEFAULT_XRES 640

  44. //#define DEFAULT_YRES 480

  45. 

  46. //#define DEFAULT_XRES 800

  47. //#define DEFAULT_YRES 600

  48. 

  49. //#define DEFAULT_XRES 1024

  50. //#define DEFAULT_YRES 768

  51. 

  52. //#define DEFAULT_XRES 1280

  53. //#define DEFAULT_YRES 720

  54. 

  55. //#define DEFAULT_XRES 1280

  56. //#define DEFAULT_YRES 800

  57. 

  58. #define DEFAULT_XRES 1366

  59. #define DEFAULT_YRES 768

  60. 

  61. //#define DEFAULT_XRES 1440

  62. //#define DEFAULT_YRES 900

  63. 

  64. //#define DEFAULT_XRES 1920

  65. //#define DEFAULT_YRES 1080

  66. 

  67. //#define DEFAULT_XRES 2560

  68. //#define DEFAULT_YRES 1440

  69. 

  70. //#define DEFAULT_XRES 2560

  71. //#define DEFAULT_YRES 1600

  72. 

  73. //#define DEFAULT_XRES 2880

  74. //#define DEFAULT_YRES 1800

  75. 

  76. //#define DEFAULT_XRES 3840

  77. //#define DEFAULT_YRES 2160

  78. 

  79. //#define DEFAULT_XRES 7680

  80. //#define DEFAULT_YRES 4320

  81. 

  82. 

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

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

  85. 

  86. static uint16_t usb_mouse_resolution_x=DEFAULT_XRES;

  87. static uint16_t usb_mouse_resolution_y=DEFAULT_YRES;

  88. static uint16_t usb_mouse_position_x=DEFAULT_XRES/2;

  89. static uint16_t usb_mouse_position_y=DEFAULT_YRES/2;

  90. static uint32_t usb_mouse_scale_x=DEFAULT_XSCALE;

  91. static uint32_t usb_mouse_scale_y=DEFAULT_YSCALE;

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

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

  94. 

  95. 

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

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

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

  99. {

  100.         uint8_t mask=0;

  101. 

  102.         if (left) mask |= 1;

  103.         if (middle) mask |= 4;

  104.         if (right) mask |= 2;

  105.         usb_mouse_buttons_state = mask;

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

  107. }

  108. 

  109. 

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

  111. #define TX_PACKET_LIMIT 3

  112. 

  113. static uint8_t transmit_previous_timeout=0;

  114. 

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

  116. #define TX_TIMEOUT_MSEC 30

  117. 

  118. #if F_CPU == 168000000

  119.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1100)

  120. #elif F_CPU == 144000000

  121.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 932)

  122. #elif F_CPU == 120000000

  123.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 764)

  124. #elif F_CPU == 96000000

  125.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 596)

  126. #elif F_CPU == 72000000

  127.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 512)

  128. #elif F_CPU == 48000000

  129.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 428)

  130. #elif F_CPU == 24000000

  131.   #define TX_TIMEOUT (TX_TIMEOUT_MSEC * 262)

  132. #endif

  133. 

  134. 

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

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

  137. {

  138.         uint32_t wait_count=0;

  139.         usb_packet_t *tx_packet;

  140. 

  141.         //serial_print("move");

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

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

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

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

  146. 

  147.         while (1) {

  148.                 if (!usb_configuration) {

  149.                         return -1;

  150.                 }

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

  152.                         tx_packet = usb_malloc();

  153.                         if (tx_packet) break;

  154.                 }

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

  156.                         transmit_previous_timeout = 1;

  157.                         return -1;

  158.                 }

  159.                 yield();

  160.         }

  161.         transmit_previous_timeout = 0;

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

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

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

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

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

  167.         tx_packet->len = 5;

  168.         usb_tx(MOUSE_ENDPOINT, tx_packet);

  169.         return 0;

  170. }

  171. 

  172. int usb_mouse_position(uint16_t x, uint16_t y)

  173. {

  174.         uint32_t wait_count=0, val32;

  175.         usb_packet_t *tx_packet;

  176. 

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

  178. 	usb_mouse_position_x = x;

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

  180. 	usb_mouse_position_y = y;

  181. 

  182.         while (1) {

  183.                 if (!usb_configuration) {

  184.                         return -1;

  185.                 }

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

  187.                         tx_packet = usb_malloc();

  188.                         if (tx_packet) break;

  189.                 }

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

  191.                         transmit_previous_timeout = 1;

  192.                         return -1;

  193.                 }

  194.                 yield();

  195.         }

  196. 	transmit_previous_timeout = 0;

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

  198. 	val32 = usb_mouse_position_x * usb_mouse_scale_x + usb_mouse_offset_x;

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

  200. 	 //serial_phex16(usb_mouse_position_x);

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

  202. 	 //serial_phex32(val32);

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

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

  205. 	val32 = usb_mouse_position_y * usb_mouse_scale_y + usb_mouse_offset_y;

  206. 	 //serial_print(",");

  207. 	 //serial_phex16(usb_mouse_position_y);

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

  209. 	 //serial_phex32(val32);

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

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

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

  213. 	tx_packet->len = 5;

  214. 	usb_tx(MOUSE_ENDPOINT, tx_packet);

  215.         return 0;

  216. }

  217. 

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

  219. {

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

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

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

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

  224. 	usb_mouse_resolution_x = width;

  225. 	usb_mouse_resolution_y = height;

  226. 	usb_mouse_position_x = width / 2;

  227. 	usb_mouse_position_y = height / 2;

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

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

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

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

  232. 	if (mac) {

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

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

  235. 		usb_mouse_offset_x += 161061273ul;

  236. 		usb_mouse_offset_y += 161061273ul;

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

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

  239. 	}

  240. }

  241. 

  242. 

  243. #endif // F_CPU

  244. #endif // MOUSE_INTERFACE