protocol/lufa/lufa.c

   1 /*
   2  * Copyright 2012 Jun Wako <wakojun@gmail.com>
   3  * This file is based on:
   4  *     LUFA-120219/Demos/Device/Lowlevel/KeyboardMouse
   5  *     LUFA-120219/Demos/Device/Lowlevel/GenericHID
   6  */
   7
   8 /*
   9              LUFA Library
  10      Copyright (C) Dean Camera, 2012.
  11
  12   dean [at] fourwalledcubicle [dot] com
  13            www.lufa-lib.org
  14 */
  15
  16 /*
  17   Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  18   Copyright 2010  Denver Gingerich (denver [at] ossguy [dot] com)
  19
  20   Permission to use, copy, modify, distribute, and sell this
  21   software and its documentation for any purpose is hereby granted
  22   without fee, provided that the above copyright notice appear in
  23   all copies and that both that the copyright notice and this
  24   permission notice and warranty disclaimer appear in supporting
  25   documentation, and that the name of the author not be used in
  26   advertising or publicity pertaining to distribution of the
  27   software without specific, written prior permission.
  28
  29   The author disclaim all warranties with regard to this
  30   software, including all implied warranties of merchantability
  31   and fitness.  In no event shall the author be liable for any
  32   special, indirect or consequential damages or any damages
  33   whatsoever resulting from loss of use, data or profits, whether
  34   in an action of contract, negligence or other tortious action,
  35   arising out of or in connection with the use or performance of
  36   this software.
  37 */
  38
  39 #include "report.h"
  40 #include "host.h"
  41 #include "host_driver.h"
  42 #include "keyboard.h"
  43 #include "action.h"
  44 #include "led.h"
  45 #include "sendchar.h"
  46 #include "debug.h"
  47 #ifdef SLEEP_LED_ENABLE
  48 #include "sleep_led.h"
  49 #endif
  50 #include "suspend.h"
  51
  52 #include "descriptor.h"
  53 #include "lufa.h"
  54
  55 static uint8_t idle_duration = 0;
  56 static uint8_t protocol_report = 1;
  57 static uint8_t keyboard_led_stats = 0;
  58
  59 static report_keyboard_t keyboard_report_sent;
  60
  61
  62 /* Host driver */
  63 static uint8_t keyboard_leds(void);
  64 static void send_keyboard(report_keyboard_t *report);
  65 static void send_mouse(report_mouse_t *report);
  66 static void send_system(uint16_t data);
  67 static void send_consumer(uint16_t data);
  68 host_driver_t lufa_driver = {
  69     keyboard_leds,
  70     send_keyboard,
  71     send_mouse,
  72     send_system,
  73     send_consumer
  74 };
  75
  76
  77 /*******************************************************************************
  78  * Console
  79  ******************************************************************************/
  80 #ifdef CONSOLE_ENABLE
  81 static void Console_Task(void)
  82 {
  83     /* Device must be connected and configured for the task to run */
  84     if (USB_DeviceState != DEVICE_STATE_Configured)
  85         return;
  86
  87     uint8_t ep = Endpoint_GetCurrentEndpoint();
  88
  89 #if 0
  90     // TODO: impl receivechar()/recvchar()
  91     Endpoint_SelectEndpoint(CONSOLE_OUT_EPNUM);
  92
  93     /* Check to see if a packet has been sent from the host */
  94     if (Endpoint_IsOUTReceived())
  95     {
  96         /* Check to see if the packet contains data */
  97         if (Endpoint_IsReadWriteAllowed())
  98         {
  99             /* Create a temporary buffer to hold the read in report from the host */
 100             uint8_t ConsoleData[CONSOLE_EPSIZE];
 101
 102             /* Read Console Report Data */
 103             Endpoint_Read_Stream_LE(&ConsoleData, sizeof(ConsoleData), NULL);
 104
 105             /* Process Console Report Data */
 106             //ProcessConsoleHIDReport(ConsoleData);
 107         }
 108
 109         /* Finalize the stream transfer to send the last packet */
 110         Endpoint_ClearOUT();
 111     }
 112 #endif
 113
 114     /* IN packet */
 115     Endpoint_SelectEndpoint(CONSOLE_IN_EPNUM);
 116     if (!Endpoint_IsEnabled() || !Endpoint_IsConfigured()) {
 117         Endpoint_SelectEndpoint(ep);
 118         return;
 119     }
 120
 121     // fill empty bank
 122     while (Endpoint_IsReadWriteAllowed())
 123         Endpoint_Write_8(0);
 124
 125     // flash senchar packet
 126     if (Endpoint_IsINReady()) {
 127         Endpoint_ClearIN();
 128     }
 129
 130     Endpoint_SelectEndpoint(ep);
 131 }
 132 #else
 133 static void Console_Task(void)
 134 {
 135 }
 136 #endif
 137
 138
 139 /*******************************************************************************
 140  * USB Events
 141  ******************************************************************************/
 142 /*
 143  * Event Order of Plug in:
 144  * 0) EVENT_USB_Device_Connect
 145  * 1) EVENT_USB_Device_Suspend
 146  * 2) EVENT_USB_Device_Reset
 147  * 3) EVENT_USB_Device_Wake
 148 */
 149 void EVENT_USB_Device_Connect(void)
 150 {
 151 }
 152
 153 void EVENT_USB_Device_Disconnect(void)
 154 {
 155 }
 156
 157 void EVENT_USB_Device_Reset(void)
 158 {
 159 }
 160
 161 void EVENT_USB_Device_Suspend()
 162 {
 163 #ifdef SLEEP_LED_ENABLE
 164     sleep_led_enable();
 165 #endif
 166 }
 167
 168 void EVENT_USB_Device_WakeUp()
 169 {
 170     suspend_wakeup_init();
 171
 172 #ifdef SLEEP_LED_ENABLE
 173     sleep_led_disable();
 174     // NOTE: converters may not accept this
 175     led_set(host_keyboard_leds());
 176 #endif
 177 }
 178
 179 void EVENT_USB_Device_StartOfFrame(void)
 180 {
 181     Console_Task();
 182 }
 183
 184 /** Event handler for the USB_ConfigurationChanged event.
 185  * This is fired when the host sets the current configuration of the USB device after enumeration.
 186  */
 187 void EVENT_USB_Device_ConfigurationChanged(void)
 188 {
 189     bool ConfigSuccess = true;
 190
 191     /* Setup Keyboard HID Report Endpoints */
 192     ConfigSuccess &= ENDPOINT_CONFIG(KEYBOARD_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 193                                      KEYBOARD_EPSIZE, ENDPOINT_BANK_SINGLE);
 194
 195 #ifdef MOUSE_ENABLE
 196     /* Setup Mouse HID Report Endpoint */
 197     ConfigSuccess &= ENDPOINT_CONFIG(MOUSE_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 198                                      MOUSE_EPSIZE, ENDPOINT_BANK_SINGLE);
 199 #endif
 200
 201 #ifdef EXTRAKEY_ENABLE
 202     /* Setup Extra HID Report Endpoint */
 203     ConfigSuccess &= ENDPOINT_CONFIG(EXTRAKEY_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 204                                      EXTRAKEY_EPSIZE, ENDPOINT_BANK_SINGLE);
 205 #endif
 206
 207 #ifdef CONSOLE_ENABLE
 208     /* Setup Console HID Report Endpoints */
 209     ConfigSuccess &= ENDPOINT_CONFIG(CONSOLE_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 210                                      CONSOLE_EPSIZE, ENDPOINT_BANK_DOUBLE);
 211     ConfigSuccess &= ENDPOINT_CONFIG(CONSOLE_OUT_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_OUT,
 212                                      CONSOLE_EPSIZE, ENDPOINT_BANK_SINGLE);
 213 #endif
 214
 215 #ifdef NKRO_ENABLE
 216     /* Setup NKRO HID Report Endpoints */
 217     ConfigSuccess &= ENDPOINT_CONFIG(NKRO_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 218                                      NKRO_EPSIZE, ENDPOINT_BANK_SINGLE);
 219 #endif
 220 }
 221
 222 /*
 223 Appendix G: HID Request Support Requirements
 224
 225 The following table enumerates the requests that need to be supported by various types of HID class devices.
 226
 227 Device type     GetReport   SetReport   GetIdle     SetIdle     GetProtocol SetProtocol
 228 ------------------------------------------------------------------------------------------
 229 Boot Mouse      Required    Optional    Optional    Optional    Required    Required
 230 Non-Boot Mouse  Required    Optional    Optional    Optional    Optional    Optional
 231 Boot Keyboard   Required    Optional    Required    Required    Required    Required
 232 Non-Boot Keybrd Required    Optional    Required    Required    Optional    Optional
 233 Other Device    Required    Optional    Optional    Optional    Optional    Optional
 234 */
 235 /** Event handler for the USB_ControlRequest event.
 236  *  This is fired before passing along unhandled control requests to the library for processing internally.
 237  */
 238 void EVENT_USB_Device_ControlRequest(void)
 239 {
 240     uint8_t* ReportData = NULL;
 241     uint8_t  ReportSize = 0;
 242
 243     /* Handle HID Class specific requests */
 244     switch (USB_ControlRequest.bRequest)
 245     {
 246         case HID_REQ_GetReport:
 247             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 248             {
 249                 Endpoint_ClearSETUP();
 250
 251                 // Interface
 252                 switch (USB_ControlRequest.wIndex) {
 253                 case KEYBOARD_INTERFACE:
 254                     // TODO: test/check
 255                     ReportData = (uint8_t*)&keyboard_report_sent;
 256                     ReportSize = sizeof(keyboard_report_sent);
 257                     break;
 258                 }
 259
 260                 /* Write the report data to the control endpoint */
 261                 Endpoint_Write_Control_Stream_LE(ReportData, ReportSize);
 262                 Endpoint_ClearOUT();
 263             }
 264
 265             break;
 266         case HID_REQ_SetReport:
 267             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 268             {
 269
 270                 // Interface
 271                 switch (USB_ControlRequest.wIndex) {
 272                 case KEYBOARD_INTERFACE:
 273                     Endpoint_ClearSETUP();
 274
 275                     while (!(Endpoint_IsOUTReceived())) {
 276                         if (USB_DeviceState == DEVICE_STATE_Unattached)
 277                           return;
 278                     }
 279                     keyboard_led_stats = Endpoint_Read_8();
 280
 281                     Endpoint_ClearOUT();
 282                     Endpoint_ClearStatusStage();
 283                     break;
 284                 }
 285
 286             }
 287
 288             break;
 289
 290         case HID_REQ_GetProtocol:
 291             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 292             {
 293                 Endpoint_ClearSETUP();
 294                 while (!(Endpoint_IsINReady()));
 295                 Endpoint_Write_8(protocol_report);
 296                 Endpoint_ClearIN();
 297                 Endpoint_ClearStatusStage();
 298             }
 299
 300             break;
 301         case HID_REQ_SetProtocol:
 302             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 303             {
 304                 Endpoint_ClearSETUP();
 305                 Endpoint_ClearStatusStage();
 306
 307                 protocol_report = ((USB_ControlRequest.wValue & 0xFF) != 0x00);
 308             }
 309
 310             break;
 311         case HID_REQ_SetIdle:
 312             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 313             {
 314                 Endpoint_ClearSETUP();
 315                 Endpoint_ClearStatusStage();
 316
 317                 idle_duration = ((USB_ControlRequest.wValue & 0xFF00) >> 8);
 318             }
 319
 320             break;
 321         case HID_REQ_GetIdle:
 322             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 323             {
 324                 Endpoint_ClearSETUP();
 325                 while (!(Endpoint_IsINReady()));
 326                 Endpoint_Write_8(idle_duration);
 327                 Endpoint_ClearIN();
 328                 Endpoint_ClearStatusStage();
 329             }
 330
 331             break;
 332     }
 333 }
 334
 335 /*******************************************************************************
 336  * Host driver
 337  ******************************************************************************/
 338 static uint8_t keyboard_leds(void)
 339 {
 340     return keyboard_led_stats;
 341 }
 342
 343 static void send_keyboard(report_keyboard_t *report)
 344 {
 345     uint8_t timeout = 255;
 346
 347     if (USB_DeviceState != DEVICE_STATE_Configured)
 348         return;
 349
 350     /* Select the Keyboard Report Endpoint */
 351 #ifdef NKRO_ENABLE
 352     if (keyboard_nkro) {
 353         Endpoint_SelectEndpoint(NKRO_IN_EPNUM);
 354
 355         /* Check if write ready for a polling interval around 1ms */
 356         while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(4);
 357         if (!Endpoint_IsReadWriteAllowed()) return;
 358     }
 359     else
 360 #endif
 361     {
 362         Endpoint_SelectEndpoint(KEYBOARD_IN_EPNUM);
 363
 364         /* Check if write ready for a polling interval around 10ms */
 365         while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 366         if (!Endpoint_IsReadWriteAllowed()) return;
 367     }
 368
 369     /* Write Keyboard Report Data */
 370 #ifdef NKRO_ENABLE
 371     if (keyboard_nkro) {
 372         Endpoint_Write_Stream_LE(report, NKRO_EPSIZE, NULL);
 373     }
 374     else
 375 #endif
 376     {
 377         /* boot mode */
 378         Endpoint_Write_Stream_LE(report, KEYBOARD_EPSIZE, NULL);
 379     }
 380
 381     /* Finalize the stream transfer to send the last packet */
 382     Endpoint_ClearIN();
 383
 384     keyboard_report_sent = *report;
 385 }
 386
 387 static void send_mouse(report_mouse_t *report)
 388 {
 389 #ifdef MOUSE_ENABLE
 390     uint8_t timeout = 255;
 391
 392     if (USB_DeviceState != DEVICE_STATE_Configured)
 393         return;
 394
 395     /* Select the Mouse Report Endpoint */
 396     Endpoint_SelectEndpoint(MOUSE_IN_EPNUM);
 397
 398     /* Check if write ready for a polling interval around 10ms */
 399     while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 400     if (!Endpoint_IsReadWriteAllowed()) return;
 401
 402     /* Write Mouse Report Data */
 403     Endpoint_Write_Stream_LE(report, sizeof(report_mouse_t), NULL);
 404
 405     /* Finalize the stream transfer to send the last packet */
 406     Endpoint_ClearIN();
 407 #endif
 408 }
 409
 410 static void send_system(uint16_t data)
 411 {
 412     uint8_t timeout = 255;
 413
 414     if (USB_DeviceState != DEVICE_STATE_Configured)
 415         return;
 416
 417     report_extra_t r = {
 418         .report_id = REPORT_ID_SYSTEM,
 419         .usage = data
 420     };
 421     Endpoint_SelectEndpoint(EXTRAKEY_IN_EPNUM);
 422
 423     /* Check if write ready for a polling interval around 10ms */
 424     while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 425     if (!Endpoint_IsReadWriteAllowed()) return;
 426
 427     Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
 428     Endpoint_ClearIN();
 429 }
 430
 431 static void send_consumer(uint16_t data)
 432 {
 433     uint8_t timeout = 255;
 434
 435     if (USB_DeviceState != DEVICE_STATE_Configured)
 436         return;
 437
 438     report_extra_t r = {
 439         .report_id = REPORT_ID_CONSUMER,
 440         .usage = data
 441     };
 442     Endpoint_SelectEndpoint(EXTRAKEY_IN_EPNUM);
 443
 444     /* Check if write ready for a polling interval around 10ms */
 445     while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 446     if (!Endpoint_IsReadWriteAllowed()) return;
 447
 448     Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
 449     Endpoint_ClearIN();
 450 }
 451
 452
 453 /*******************************************************************************
 454  * sendchar
 455  ******************************************************************************/
 456 #ifdef CONSOLE_ENABLE
 457 #define SEND_TIMEOUT 5
 458 int8_t sendchar(uint8_t c)
 459 {
 460     // Not wait once timeouted.
 461     // Because sendchar() is called so many times, waiting each call causes big lag.
 462     static bool timeouted = false;
 463
 464     if (USB_DeviceState != DEVICE_STATE_Configured)
 465         return -1;
 466
 467     uint8_t ep = Endpoint_GetCurrentEndpoint();
 468     Endpoint_SelectEndpoint(CONSOLE_IN_EPNUM);
 469     if (!Endpoint_IsEnabled() || !Endpoint_IsConfigured()) {
 470         Endpoint_SelectEndpoint(ep);
 471         return -1;
 472     }
 473
 474     if (timeouted && !Endpoint_IsReadWriteAllowed()) {
 475         Endpoint_SelectEndpoint(ep);
 476         return - 1;
 477     }
 478
 479     timeouted = false;
 480
 481     uint8_t timeout = SEND_TIMEOUT;
 482     uint16_t prevFN = USB_Device_GetFrameNumber();
 483     while (!Endpoint_IsReadWriteAllowed()) {
 484         switch (USB_DeviceState) {
 485         case DEVICE_STATE_Unattached:
 486         case DEVICE_STATE_Suspended:
 487             return -1;
 488         }
 489         if (Endpoint_IsStalled()) {
 490             Endpoint_SelectEndpoint(ep);
 491             return -1;
 492         }
 493         if (prevFN != USB_Device_GetFrameNumber()) {
 494             if (!(timeout--)) {
 495                 timeouted = true;
 496                 Endpoint_SelectEndpoint(ep);
 497                 return -1;
 498             }
 499             prevFN = USB_Device_GetFrameNumber();
 500         }
 501     }
 502
 503     Endpoint_Write_8(c);
 504
 505     // send when bank is full
 506     if (!Endpoint_IsReadWriteAllowed())
 507         Endpoint_ClearIN();
 508
 509     Endpoint_SelectEndpoint(ep);
 510     return 0;
 511 }
 512 #else
 513 int8_t sendchar(uint8_t c)
 514 {
 515     return 0;
 516 }
 517 #endif
 518
 519
 520 /*******************************************************************************
 521  * main
 522  ******************************************************************************/
 523 static void SetupHardware(void)
 524 {
 525     /* Disable watchdog if enabled by bootloader/fuses */
 526     MCUSR &= ~(1 << WDRF);
 527     wdt_disable();
 528
 529     /* Disable clock division */
 530     clock_prescale_set(clock_div_1);
 531
 532     // Leonardo needs. Without this USB device is not recognized.
 533     USB_Disable();
 534
 535     USB_Init();
 536
 537     // for Console_Task
 538     USB_Device_EnableSOFEvents();
 539     print_set_sendchar(sendchar);
 540 }
 541
 542 int main(void)  __attribute__ ((weak));
 543 int main(void)
 544 {
 545     SetupHardware();
 546     sei();
 547
 548     /* wait for USB startup & debug output */
 549     while (USB_DeviceState != DEVICE_STATE_Configured) {
 550 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 551         ;
 552 #else
 553         USB_USBTask();
 554 #endif
 555     }
 556     print("USB configured.\n");
 557
 558     /* init modules */
 559     keyboard_init();
 560     host_set_driver(&lufa_driver);
 561 #ifdef SLEEP_LED_ENABLE
 562     sleep_led_init();
 563 #endif
 564
 565     print("Keyboard start.\n");
 566     while (1) {
 567         while (USB_DeviceState == DEVICE_STATE_Suspended) {
 568             suspend_power_down();
 569             if (USB_Device_RemoteWakeupEnabled && suspend_wakeup_condition()) {
 570                     USB_Device_SendRemoteWakeup();
 571             }
 572         }
 573
 574         keyboard_task();
 575
 576 #if !defined(INTERRUPT_CONTROL_ENDPOINT)
 577         USB_USBTask();
 578 #endif
 579     }
 580 }