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 uint8_t keyboard_idle = 0;
  56 uint8_t keyboard_protocol = 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     print("[C]");
 152     /* For battery powered device */
 153     if (!USB_IsInitialized) {
 154         USB_Init();
 155         USB_Device_EnableSOFEvents();
 156     }
 157 }
 158
 159 void EVENT_USB_Device_Disconnect(void)
 160 {
 161     print("[D]");
 162     /* For battery powered device */
 163 /* TODO: This doesn't work. After several plug in/outs can not be enumerated.
 164     if (USB_IsInitialized) {
 165         USB_Disable();  // Disable all interrupts
 166         USB_Controller_Enable();
 167         USB_INT_Enable(USB_INT_VBUSTI);
 168     }
 169 */
 170 }
 171
 172 void EVENT_USB_Device_Reset(void)
 173 {
 174     print("[R]");
 175 }
 176
 177 void EVENT_USB_Device_Suspend()
 178 {
 179     print("[S]");
 180 #ifdef SLEEP_LED_ENABLE
 181     sleep_led_enable();
 182 #endif
 183 }
 184
 185 void EVENT_USB_Device_WakeUp()
 186 {
 187     print("[W]");
 188     suspend_wakeup_init();
 189
 190 #ifdef SLEEP_LED_ENABLE
 191     sleep_led_disable();
 192     // NOTE: converters may not accept this
 193     led_set(host_keyboard_leds());
 194 #endif
 195 }
 196
 197 void EVENT_USB_Device_StartOfFrame(void)
 198 {
 199     Console_Task();
 200 }
 201
 202 /** Event handler for the USB_ConfigurationChanged event.
 203  * This is fired when the host sets the current configuration of the USB device after enumeration.
 204  */
 205 void EVENT_USB_Device_ConfigurationChanged(void)
 206 {
 207     bool ConfigSuccess = true;
 208
 209     /* Setup Keyboard HID Report Endpoints */
 210     ConfigSuccess &= ENDPOINT_CONFIG(KEYBOARD_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 211                                      KEYBOARD_EPSIZE, ENDPOINT_BANK_SINGLE);
 212
 213 #ifdef MOUSE_ENABLE
 214     /* Setup Mouse HID Report Endpoint */
 215     ConfigSuccess &= ENDPOINT_CONFIG(MOUSE_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 216                                      MOUSE_EPSIZE, ENDPOINT_BANK_SINGLE);
 217 #endif
 218
 219 #ifdef EXTRAKEY_ENABLE
 220     /* Setup Extra HID Report Endpoint */
 221     ConfigSuccess &= ENDPOINT_CONFIG(EXTRAKEY_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 222                                      EXTRAKEY_EPSIZE, ENDPOINT_BANK_SINGLE);
 223 #endif
 224
 225 #ifdef CONSOLE_ENABLE
 226     /* Setup Console HID Report Endpoints */
 227     ConfigSuccess &= ENDPOINT_CONFIG(CONSOLE_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 228                                      CONSOLE_EPSIZE, ENDPOINT_BANK_DOUBLE);
 229 #if 0
 230     ConfigSuccess &= ENDPOINT_CONFIG(CONSOLE_OUT_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_OUT,
 231                                      CONSOLE_EPSIZE, ENDPOINT_BANK_SINGLE);
 232 #endif
 233 #endif
 234
 235 #ifdef NKRO_ENABLE
 236     /* Setup NKRO HID Report Endpoints */
 237     ConfigSuccess &= ENDPOINT_CONFIG(NKRO_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 238                                      NKRO_EPSIZE, ENDPOINT_BANK_SINGLE);
 239 #endif
 240 }
 241
 242 /*
 243 Appendix G: HID Request Support Requirements
 244
 245 The following table enumerates the requests that need to be supported by various types of HID class devices.
 246
 247 Device type     GetReport   SetReport   GetIdle     SetIdle     GetProtocol SetProtocol
 248 ------------------------------------------------------------------------------------------
 249 Boot Mouse      Required    Optional    Optional    Optional    Required    Required
 250 Non-Boot Mouse  Required    Optional    Optional    Optional    Optional    Optional
 251 Boot Keyboard   Required    Optional    Required    Required    Required    Required
 252 Non-Boot Keybrd Required    Optional    Required    Required    Optional    Optional
 253 Other Device    Required    Optional    Optional    Optional    Optional    Optional
 254 */
 255 /** Event handler for the USB_ControlRequest event.
 256  *  This is fired before passing along unhandled control requests to the library for processing internally.
 257  */
 258 void EVENT_USB_Device_ControlRequest(void)
 259 {
 260     uint8_t* ReportData = NULL;
 261     uint8_t  ReportSize = 0;
 262
 263     /* Handle HID Class specific requests */
 264     switch (USB_ControlRequest.bRequest)
 265     {
 266         case HID_REQ_GetReport:
 267             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 268             {
 269                 Endpoint_ClearSETUP();
 270
 271                 // Interface
 272                 switch (USB_ControlRequest.wIndex) {
 273                 case KEYBOARD_INTERFACE:
 274                     // TODO: test/check
 275                     ReportData = (uint8_t*)&keyboard_report_sent;
 276                     ReportSize = sizeof(keyboard_report_sent);
 277                     break;
 278                 }
 279
 280                 /* Write the report data to the control endpoint */
 281                 Endpoint_Write_Control_Stream_LE(ReportData, ReportSize);
 282                 Endpoint_ClearOUT();
 283             }
 284
 285             break;
 286         case HID_REQ_SetReport:
 287             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 288             {
 289
 290                 // Interface
 291                 switch (USB_ControlRequest.wIndex) {
 292                 case KEYBOARD_INTERFACE:
 293 #ifdef NKRO_ENABLE
 294                 case NKRO_INTERFACE:
 295 #endif
 296                     Endpoint_ClearSETUP();
 297
 298                     while (!(Endpoint_IsOUTReceived())) {
 299                         if (USB_DeviceState == DEVICE_STATE_Unattached)
 300                           return;
 301                     }
 302                     keyboard_led_stats = Endpoint_Read_8();
 303
 304                     Endpoint_ClearOUT();
 305                     Endpoint_ClearStatusStage();
 306                     break;
 307                 }
 308
 309             }
 310
 311             break;
 312
 313         case HID_REQ_GetProtocol:
 314             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 315             {
 316                 if (USB_ControlRequest.wIndex == KEYBOARD_INTERFACE) {
 317                     Endpoint_ClearSETUP();
 318                     while (!(Endpoint_IsINReady()));
 319                     Endpoint_Write_8(keyboard_protocol);
 320                     Endpoint_ClearIN();
 321                     Endpoint_ClearStatusStage();
 322                 }
 323             }
 324
 325             break;
 326         case HID_REQ_SetProtocol:
 327             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 328             {
 329                 if (USB_ControlRequest.wIndex == KEYBOARD_INTERFACE) {
 330                     Endpoint_ClearSETUP();
 331                     Endpoint_ClearStatusStage();
 332
 333                     keyboard_protocol = ((USB_ControlRequest.wValue & 0xFF) != 0x00);
 334 #ifdef NKRO_ENABLE
 335                     keyboard_nkro = !!keyboard_protocol;
 336 #endif
 337                     clear_keyboard();
 338                 }
 339             }
 340
 341             break;
 342         case HID_REQ_SetIdle:
 343             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 344             {
 345                 Endpoint_ClearSETUP();
 346                 Endpoint_ClearStatusStage();
 347
 348                 keyboard_idle = ((USB_ControlRequest.wValue & 0xFF00) >> 8);
 349             }
 350
 351             break;
 352         case HID_REQ_GetIdle:
 353             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 354             {
 355                 Endpoint_ClearSETUP();
 356                 while (!(Endpoint_IsINReady()));
 357                 Endpoint_Write_8(keyboard_idle);
 358                 Endpoint_ClearIN();
 359                 Endpoint_ClearStatusStage();
 360             }
 361
 362             break;
 363     }
 364 }
 365
 366 /*******************************************************************************
 367  * Host driver
 368  ******************************************************************************/
 369 static uint8_t keyboard_leds(void)
 370 {
 371     return keyboard_led_stats;
 372 }
 373
 374 static void send_keyboard(report_keyboard_t *report)
 375 {
 376     uint8_t timeout = 255;
 377
 378     if (USB_DeviceState != DEVICE_STATE_Configured)
 379         return;
 380
 381     /* Select the Keyboard Report Endpoint */
 382 #ifdef NKRO_ENABLE
 383     if (keyboard_nkro) {
 384         /* Report protocol - NKRO */
 385         Endpoint_SelectEndpoint(NKRO_IN_EPNUM);
 386
 387         /* Check if write ready for a polling interval around 1ms */
 388         while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(4);
 389         if (!Endpoint_IsReadWriteAllowed()) return;
 390
 391         /* Write Keyboard Report Data */
 392         Endpoint_Write_Stream_LE(report, NKRO_EPSIZE, NULL);
 393     }
 394     else
 395 #endif
 396     {
 397         /* Boot protocol */
 398         Endpoint_SelectEndpoint(KEYBOARD_IN_EPNUM);
 399
 400         /* Check if write ready for a polling interval around 10ms */
 401         while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 402         if (!Endpoint_IsReadWriteAllowed()) return;
 403
 404         /* Write Keyboard Report Data */
 405         Endpoint_Write_Stream_LE(report, KEYBOARD_EPSIZE, NULL);
 406     }
 407
 408     /* Finalize the stream transfer to send the last packet */
 409     Endpoint_ClearIN();
 410
 411     keyboard_report_sent = *report;
 412 }
 413
 414 static void send_mouse(report_mouse_t *report)
 415 {
 416 #ifdef MOUSE_ENABLE
 417     uint8_t timeout = 255;
 418
 419     if (USB_DeviceState != DEVICE_STATE_Configured)
 420         return;
 421
 422     /* Select the Mouse Report Endpoint */
 423     Endpoint_SelectEndpoint(MOUSE_IN_EPNUM);
 424
 425     /* Check if write ready for a polling interval around 10ms */
 426     while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 427     if (!Endpoint_IsReadWriteAllowed()) return;
 428
 429     /* Write Mouse Report Data */
 430     Endpoint_Write_Stream_LE(report, sizeof(report_mouse_t), NULL);
 431
 432     /* Finalize the stream transfer to send the last packet */
 433     Endpoint_ClearIN();
 434 #endif
 435 }
 436
 437 static void send_system(uint16_t data)
 438 {
 439     uint8_t timeout = 255;
 440
 441     if (USB_DeviceState != DEVICE_STATE_Configured)
 442         return;
 443
 444     report_extra_t r = {
 445         .report_id = REPORT_ID_SYSTEM,
 446         .usage = data
 447     };
 448     Endpoint_SelectEndpoint(EXTRAKEY_IN_EPNUM);
 449
 450     /* Check if write ready for a polling interval around 10ms */
 451     while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 452     if (!Endpoint_IsReadWriteAllowed()) return;
 453
 454     Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
 455     Endpoint_ClearIN();
 456 }
 457
 458 static void send_consumer(uint16_t data)
 459 {
 460     uint8_t timeout = 255;
 461
 462     if (USB_DeviceState != DEVICE_STATE_Configured)
 463         return;
 464
 465     report_extra_t r = {
 466         .report_id = REPORT_ID_CONSUMER,
 467         .usage = data
 468     };
 469     Endpoint_SelectEndpoint(EXTRAKEY_IN_EPNUM);
 470
 471     /* Check if write ready for a polling interval around 10ms */
 472     while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 473     if (!Endpoint_IsReadWriteAllowed()) return;
 474
 475     Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
 476     Endpoint_ClearIN();
 477 }
 478
 479
 480 /*******************************************************************************
 481  * sendchar
 482  ******************************************************************************/
 483 #ifdef CONSOLE_ENABLE
 484 #define SEND_TIMEOUT 5
 485 int8_t sendchar(uint8_t c)
 486 {
 487     // Not wait once timeouted.
 488     // Because sendchar() is called so many times, waiting each call causes big lag.
 489     static bool timeouted = false;
 490
 491     if (USB_DeviceState != DEVICE_STATE_Configured)
 492         return -1;
 493
 494     uint8_t ep = Endpoint_GetCurrentEndpoint();
 495     Endpoint_SelectEndpoint(CONSOLE_IN_EPNUM);
 496     if (!Endpoint_IsEnabled() || !Endpoint_IsConfigured()) {
 497         goto ERROR_EXIT;
 498     }
 499
 500     if (timeouted && !Endpoint_IsReadWriteAllowed()) {
 501         goto ERROR_EXIT;
 502     }
 503
 504     timeouted = false;
 505
 506     uint8_t timeout = SEND_TIMEOUT;
 507     while (!Endpoint_IsReadWriteAllowed()) {
 508         if (USB_DeviceState != DEVICE_STATE_Configured) {
 509             goto ERROR_EXIT;
 510         }
 511         if (Endpoint_IsStalled()) {
 512             goto ERROR_EXIT;
 513         }
 514         if (!(timeout--)) {
 515             timeouted = true;
 516             goto ERROR_EXIT;
 517         }
 518         _delay_ms(1);
 519     }
 520
 521     Endpoint_Write_8(c);
 522
 523     // send when bank is full
 524     if (!Endpoint_IsReadWriteAllowed())
 525         Endpoint_ClearIN();
 526
 527     Endpoint_SelectEndpoint(ep);
 528     return 0;
 529 ERROR_EXIT:
 530     Endpoint_SelectEndpoint(ep);
 531     return -1;
 532 }
 533 #else
 534 int8_t sendchar(uint8_t c)
 535 {
 536     return 0;
 537 }
 538 #endif
 539
 540
 541 /*******************************************************************************
 542  * main
 543  ******************************************************************************/
 544 static void SetupHardware(void)
 545 {
 546     /* Disable watchdog if enabled by bootloader/fuses */
 547     MCUSR &= ~(1 << WDRF);
 548     wdt_disable();
 549
 550     /* Disable clock division */
 551     clock_prescale_set(clock_div_1);
 552
 553     // Leonardo needs. Without this USB device is not recognized.
 554     USB_Disable();
 555
 556     USB_Init();
 557
 558     // for Console_Task
 559     USB_Device_EnableSOFEvents();
 560     print_set_sendchar(sendchar);
 561 }
 562
 563 int main(void)  __attribute__ ((weak));
 564 int main(void)
 565 {
 566     SetupHardware();
 567     sei();
 568
 569     /* wait for USB startup & debug output */
 570     while (USB_DeviceState != DEVICE_STATE_Configured) {
 571 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 572         ;
 573 #else
 574         USB_USBTask();
 575 #endif
 576     }
 577     print("USB configured.\n");
 578
 579     /* init modules */
 580     keyboard_init();
 581     host_set_driver(&lufa_driver);
 582 #ifdef SLEEP_LED_ENABLE
 583     sleep_led_init();
 584 #endif
 585
 586     print("Keyboard start.\n");
 587     while (1) {
 588         while (USB_DeviceState == DEVICE_STATE_Suspended) {
 589             print("[s]");
 590             suspend_power_down();
 591             if (USB_Device_RemoteWakeupEnabled && suspend_wakeup_condition()) {
 592                     USB_Device_SendRemoteWakeup();
 593             }
 594         }
 595
 596         keyboard_task();
 597
 598 #if !defined(INTERRUPT_CONTROL_ENDPOINT)
 599         USB_USBTask();
 600 #endif
 601     }
 602 }