tmk_core/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_Disable();
 155         USB_Init();
 156         USB_Device_EnableSOFEvents();
 157     }
 158 }
 159
 160 void EVENT_USB_Device_Disconnect(void)
 161 {
 162     print("[D]");
 163     /* For battery powered device */
 164     USB_IsInitialized = false;
 165 /* TODO: This doesn't work. After several plug in/outs can not be enumerated.
 166     if (USB_IsInitialized) {
 167         USB_Disable();  // Disable all interrupts
 168         USB_Controller_Enable();
 169         USB_INT_Enable(USB_INT_VBUSTI);
 170     }
 171 */
 172 }
 173
 174 void EVENT_USB_Device_Reset(void)
 175 {
 176     print("[R]");
 177 }
 178
 179 void EVENT_USB_Device_Suspend()
 180 {
 181     print("[S]");
 182     matrix_power_down();
 183 #ifdef SLEEP_LED_ENABLE
 184     sleep_led_enable();
 185 #endif
 186 }
 187
 188 void EVENT_USB_Device_WakeUp()
 189 {
 190     print("[W]");
 191     suspend_wakeup_init();
 192
 193 #ifdef SLEEP_LED_ENABLE
 194     sleep_led_disable();
 195     // NOTE: converters may not accept this
 196     led_set(host_keyboard_leds());
 197 #endif
 198 }
 199
 200 #ifdef CONSOLE_ENABLE
 201 static bool console_flush = false;
 202 #define CONSOLE_FLUSH_SET(b)   do { \
 203     uint8_t sreg = SREG; cli(); console_flush = b; SREG = sreg; \
 204 } while (0)
 205
 206 // called every 1ms
 207 void EVENT_USB_Device_StartOfFrame(void)
 208 {
 209     static uint8_t count;
 210     if (++count % 50) return;
 211     count = 0;
 212
 213     if (!console_flush) return;
 214     Console_Task();
 215     console_flush = false;
 216 }
 217 #endif
 218
 219 /** Event handler for the USB_ConfigurationChanged event.
 220  * This is fired when the host sets the current configuration of the USB device after enumeration.
 221  */
 222 void EVENT_USB_Device_ConfigurationChanged(void)
 223 {
 224     bool ConfigSuccess = true;
 225
 226     /* Setup Keyboard HID Report Endpoints */
 227     ConfigSuccess &= ENDPOINT_CONFIG(KEYBOARD_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 228                                      KEYBOARD_EPSIZE, ENDPOINT_BANK_SINGLE);
 229
 230 #ifdef MOUSE_ENABLE
 231     /* Setup Mouse HID Report Endpoint */
 232     ConfigSuccess &= ENDPOINT_CONFIG(MOUSE_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 233                                      MOUSE_EPSIZE, ENDPOINT_BANK_SINGLE);
 234 #endif
 235
 236 #ifdef EXTRAKEY_ENABLE
 237     /* Setup Extra HID Report Endpoint */
 238     ConfigSuccess &= ENDPOINT_CONFIG(EXTRAKEY_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 239                                      EXTRAKEY_EPSIZE, ENDPOINT_BANK_SINGLE);
 240 #endif
 241
 242 #ifdef CONSOLE_ENABLE
 243     /* Setup Console HID Report Endpoints */
 244     ConfigSuccess &= ENDPOINT_CONFIG(CONSOLE_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 245                                      CONSOLE_EPSIZE, ENDPOINT_BANK_DOUBLE);
 246 #if 0
 247     ConfigSuccess &= ENDPOINT_CONFIG(CONSOLE_OUT_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_OUT,
 248                                      CONSOLE_EPSIZE, ENDPOINT_BANK_SINGLE);
 249 #endif
 250 #endif
 251
 252 #ifdef NKRO_ENABLE
 253     /* Setup NKRO HID Report Endpoints */
 254     ConfigSuccess &= ENDPOINT_CONFIG(NKRO_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 255                                      NKRO_EPSIZE, ENDPOINT_BANK_SINGLE);
 256 #endif
 257 }
 258
 259 /*
 260 Appendix G: HID Request Support Requirements
 261
 262 The following table enumerates the requests that need to be supported by various types of HID class devices.
 263
 264 Device type     GetReport   SetReport   GetIdle     SetIdle     GetProtocol SetProtocol
 265 ------------------------------------------------------------------------------------------
 266 Boot Mouse      Required    Optional    Optional    Optional    Required    Required
 267 Non-Boot Mouse  Required    Optional    Optional    Optional    Optional    Optional
 268 Boot Keyboard   Required    Optional    Required    Required    Required    Required
 269 Non-Boot Keybrd Required    Optional    Required    Required    Optional    Optional
 270 Other Device    Required    Optional    Optional    Optional    Optional    Optional
 271 */
 272 /** Event handler for the USB_ControlRequest event.
 273  *  This is fired before passing along unhandled control requests to the library for processing internally.
 274  */
 275 void EVENT_USB_Device_ControlRequest(void)
 276 {
 277     uint8_t* ReportData = NULL;
 278     uint8_t  ReportSize = 0;
 279
 280     /* Handle HID Class specific requests */
 281     switch (USB_ControlRequest.bRequest)
 282     {
 283         case HID_REQ_GetReport:
 284             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 285             {
 286                 Endpoint_ClearSETUP();
 287
 288                 // Interface
 289                 switch (USB_ControlRequest.wIndex) {
 290                 case KEYBOARD_INTERFACE:
 291                     // TODO: test/check
 292                     ReportData = (uint8_t*)&keyboard_report_sent;
 293                     ReportSize = sizeof(keyboard_report_sent);
 294                     break;
 295                 }
 296
 297                 /* Write the report data to the control endpoint */
 298                 Endpoint_Write_Control_Stream_LE(ReportData, ReportSize);
 299                 Endpoint_ClearOUT();
 300             }
 301
 302             break;
 303         case HID_REQ_SetReport:
 304             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 305             {
 306
 307                 // Interface
 308                 switch (USB_ControlRequest.wIndex) {
 309                 case KEYBOARD_INTERFACE:
 310 #ifdef NKRO_ENABLE
 311                 case NKRO_INTERFACE:
 312 #endif
 313                     Endpoint_ClearSETUP();
 314
 315                     while (!(Endpoint_IsOUTReceived())) {
 316                         if (USB_DeviceState == DEVICE_STATE_Unattached)
 317                           return;
 318                     }
 319                     keyboard_led_stats = Endpoint_Read_8();
 320
 321                     Endpoint_ClearOUT();
 322                     Endpoint_ClearStatusStage();
 323                     break;
 324                 }
 325
 326             }
 327
 328             break;
 329
 330         case HID_REQ_GetProtocol:
 331             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 332             {
 333                 if (USB_ControlRequest.wIndex == KEYBOARD_INTERFACE) {
 334                     Endpoint_ClearSETUP();
 335                     while (!(Endpoint_IsINReady()));
 336                     Endpoint_Write_8(keyboard_protocol);
 337                     Endpoint_ClearIN();
 338                     Endpoint_ClearStatusStage();
 339                 }
 340             }
 341
 342             break;
 343         case HID_REQ_SetProtocol:
 344             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 345             {
 346                 if (USB_ControlRequest.wIndex == KEYBOARD_INTERFACE) {
 347                     Endpoint_ClearSETUP();
 348                     Endpoint_ClearStatusStage();
 349
 350                     keyboard_protocol = ((USB_ControlRequest.wValue & 0xFF) != 0x00);
 351 #ifdef NKRO_ENABLE
 352                     keyboard_nkro = !!keyboard_protocol;
 353 #endif
 354                     clear_keyboard();
 355                 }
 356             }
 357
 358             break;
 359         case HID_REQ_SetIdle:
 360             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 361             {
 362                 Endpoint_ClearSETUP();
 363                 Endpoint_ClearStatusStage();
 364
 365                 keyboard_idle = ((USB_ControlRequest.wValue & 0xFF00) >> 8);
 366             }
 367
 368             break;
 369         case HID_REQ_GetIdle:
 370             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 371             {
 372                 Endpoint_ClearSETUP();
 373                 while (!(Endpoint_IsINReady()));
 374                 Endpoint_Write_8(keyboard_idle);
 375                 Endpoint_ClearIN();
 376                 Endpoint_ClearStatusStage();
 377             }
 378
 379             break;
 380     }
 381 }
 382
 383 /*******************************************************************************
 384  * Host driver
 385  ******************************************************************************/
 386 static uint8_t keyboard_leds(void)
 387 {
 388     return keyboard_led_stats;
 389 }
 390
 391 static void send_keyboard(report_keyboard_t *report)
 392 {
 393     uint8_t timeout = 255;
 394
 395     if (USB_DeviceState != DEVICE_STATE_Configured)
 396         return;
 397
 398     /* Select the Keyboard Report Endpoint */
 399 #ifdef NKRO_ENABLE
 400     if (keyboard_nkro) {
 401         /* Report protocol - NKRO */
 402         Endpoint_SelectEndpoint(NKRO_IN_EPNUM);
 403
 404         /* Check if write ready for a polling interval around 1ms */
 405         while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(4);
 406         if (!Endpoint_IsReadWriteAllowed()) return;
 407
 408         /* Write Keyboard Report Data */
 409         Endpoint_Write_Stream_LE(report, NKRO_EPSIZE, NULL);
 410     }
 411     else
 412 #endif
 413     {
 414         /* Boot protocol */
 415         Endpoint_SelectEndpoint(KEYBOARD_IN_EPNUM);
 416
 417         /* Check if write ready for a polling interval around 10ms */
 418         while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 419         if (!Endpoint_IsReadWriteAllowed()) return;
 420
 421         /* Write Keyboard Report Data */
 422         Endpoint_Write_Stream_LE(report, KEYBOARD_EPSIZE, NULL);
 423     }
 424
 425     /* Finalize the stream transfer to send the last packet */
 426     Endpoint_ClearIN();
 427
 428     keyboard_report_sent = *report;
 429 }
 430
 431 static void send_mouse(report_mouse_t *report)
 432 {
 433 #ifdef MOUSE_ENABLE
 434     uint8_t timeout = 255;
 435
 436     if (USB_DeviceState != DEVICE_STATE_Configured)
 437         return;
 438
 439     /* Select the Mouse Report Endpoint */
 440     Endpoint_SelectEndpoint(MOUSE_IN_EPNUM);
 441
 442     /* Check if write ready for a polling interval around 10ms */
 443     while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 444     if (!Endpoint_IsReadWriteAllowed()) return;
 445
 446     /* Write Mouse Report Data */
 447     Endpoint_Write_Stream_LE(report, sizeof(report_mouse_t), NULL);
 448
 449     /* Finalize the stream transfer to send the last packet */
 450     Endpoint_ClearIN();
 451 #endif
 452 }
 453
 454 static void send_system(uint16_t data)
 455 {
 456     uint8_t timeout = 255;
 457
 458     if (USB_DeviceState != DEVICE_STATE_Configured)
 459         return;
 460
 461     report_extra_t r = {
 462         .report_id = REPORT_ID_SYSTEM,
 463         .usage = data
 464     };
 465     Endpoint_SelectEndpoint(EXTRAKEY_IN_EPNUM);
 466
 467     /* Check if write ready for a polling interval around 10ms */
 468     while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 469     if (!Endpoint_IsReadWriteAllowed()) return;
 470
 471     Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
 472     Endpoint_ClearIN();
 473 }
 474
 475 static void send_consumer(uint16_t data)
 476 {
 477     uint8_t timeout = 255;
 478
 479     if (USB_DeviceState != DEVICE_STATE_Configured)
 480         return;
 481
 482     report_extra_t r = {
 483         .report_id = REPORT_ID_CONSUMER,
 484         .usage = data
 485     };
 486     Endpoint_SelectEndpoint(EXTRAKEY_IN_EPNUM);
 487
 488     /* Check if write ready for a polling interval around 10ms */
 489     while (timeout-- && !Endpoint_IsReadWriteAllowed()) _delay_us(40);
 490     if (!Endpoint_IsReadWriteAllowed()) return;
 491
 492     Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
 493     Endpoint_ClearIN();
 494 }
 495
 496
 497 /*******************************************************************************
 498  * sendchar
 499  ******************************************************************************/
 500 #ifdef CONSOLE_ENABLE
 501 #define SEND_TIMEOUT 5
 502 int8_t sendchar(uint8_t c)
 503 {
 504     // Not wait once timeouted.
 505     // Because sendchar() is called so many times, waiting each call causes big lag.
 506     static bool timeouted = false;
 507
 508     // prevents Console_Task() from running during sendchar() runs.
 509     // or char will be lost. These two function is mutually exclusive.
 510     CONSOLE_FLUSH_SET(false);
 511
 512     if (USB_DeviceState != DEVICE_STATE_Configured)
 513         return -1;
 514
 515     uint8_t ep = Endpoint_GetCurrentEndpoint();
 516     Endpoint_SelectEndpoint(CONSOLE_IN_EPNUM);
 517     if (!Endpoint_IsEnabled() || !Endpoint_IsConfigured()) {
 518         goto ERROR_EXIT;
 519     }
 520
 521     if (timeouted && !Endpoint_IsReadWriteAllowed()) {
 522         goto ERROR_EXIT;
 523     }
 524
 525     timeouted = false;
 526
 527     uint8_t timeout = SEND_TIMEOUT;
 528     while (!Endpoint_IsReadWriteAllowed()) {
 529         if (USB_DeviceState != DEVICE_STATE_Configured) {
 530             goto ERROR_EXIT;
 531         }
 532         if (Endpoint_IsStalled()) {
 533             goto ERROR_EXIT;
 534         }
 535         if (!(timeout--)) {
 536             timeouted = true;
 537             goto ERROR_EXIT;
 538         }
 539         _delay_ms(1);
 540     }
 541
 542     Endpoint_Write_8(c);
 543
 544     // send when bank is full
 545     if (!Endpoint_IsReadWriteAllowed()) {
 546         while (!(Endpoint_IsINReady()));
 547         Endpoint_ClearIN();
 548     } else {
 549         CONSOLE_FLUSH_SET(true);
 550     }
 551
 552     Endpoint_SelectEndpoint(ep);
 553     return 0;
 554 ERROR_EXIT:
 555     Endpoint_SelectEndpoint(ep);
 556     return -1;
 557 }
 558 #else
 559 int8_t sendchar(uint8_t c)
 560 {
 561     return 0;
 562 }
 563 #endif
 564
 565
 566 /*******************************************************************************
 567  * main
 568  ******************************************************************************/
 569 static void setup_mcu(void)
 570 {
 571     /* Disable watchdog if enabled by bootloader/fuses */
 572     MCUSR &= ~(1 << WDRF);
 573     wdt_disable();
 574
 575     /* Disable clock division */
 576     clock_prescale_set(clock_div_1);
 577 }
 578
 579 static void setup_usb(void)
 580 {
 581     // Leonardo needs. Without this USB device is not recognized.
 582     USB_Disable();
 583
 584     USB_Init();
 585
 586     // for Console_Task
 587     USB_Device_EnableSOFEvents();
 588     print_set_sendchar(sendchar);
 589 }
 590
 591 int main(void)  __attribute__ ((weak));
 592 int main(void)
 593 {
 594     setup_mcu();
 595     keyboard_setup();
 596     setup_usb();
 597     sei();
 598
 599     /* wait for USB startup & debug output */
 600     while (USB_DeviceState != DEVICE_STATE_Configured) {
 601 #if defined(INTERRUPT_CONTROL_ENDPOINT)
 602         ;
 603 #else
 604         USB_USBTask();
 605 #endif
 606     }
 607     print("USB configured.\n");
 608
 609     /* init modules */
 610     keyboard_init();
 611     host_set_driver(&lufa_driver);
 612 #ifdef SLEEP_LED_ENABLE
 613     sleep_led_init();
 614 #endif
 615
 616     print("Keyboard start.\n");
 617     while (1) {
 618         while (USB_DeviceState == DEVICE_STATE_Suspended) {
 619             print("[s]");
 620             suspend_power_down();
 621             if (USB_Device_RemoteWakeupEnabled && suspend_wakeup_condition()) {
 622                     USB_Device_SendRemoteWakeup();
 623             }
 624         }
 625
 626         keyboard_task();
 627
 628 #if !defined(INTERRUPT_CONTROL_ENDPOINT)
 629         USB_USBTask();
 630 #endif
 631     }
 632 }