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 "sendchar.h"
  44 #include "debug.h"
  45
  46 #include "descriptor.h"
  47 #include "lufa.h"
  48
  49 static uint8_t idle_duration = 0;
  50 static uint8_t protocol_report = 1;
  51 static uint8_t keyboard_led_stats = 0;
  52
  53 static report_keyboard_t keyboard_report_sent;
  54
  55
  56 /* Host driver */
  57 static uint8_t keyboard_leds(void);
  58 static void send_keyboard(report_keyboard_t *report);
  59 static void send_mouse(report_mouse_t *report);
  60 static void send_system(uint16_t data);
  61 static void send_consumer(uint16_t data);
  62 host_driver_t lufa_driver = {
  63     keyboard_leds,
  64     send_keyboard,
  65     send_mouse,
  66     send_system,
  67     send_consumer
  68 };
  69
  70
  71 /*******************************************************************************
  72  * Console
  73  ******************************************************************************/
  74 #ifdef CONSOLE_ENABLE
  75 static void Console_Task(void)
  76 {
  77     /* Device must be connected and configured for the task to run */
  78     if (USB_DeviceState != DEVICE_STATE_Configured)
  79         return;
  80
  81     uint8_t ep = Endpoint_GetCurrentEndpoint();
  82
  83 #if 0
  84     // TODO: impl receivechar()/recvchar()
  85     Endpoint_SelectEndpoint(CONSOLE_OUT_EPNUM);
  86
  87     /* Check to see if a packet has been sent from the host */
  88     if (Endpoint_IsOUTReceived())
  89     {
  90         /* Check to see if the packet contains data */
  91         if (Endpoint_IsReadWriteAllowed())
  92         {
  93             /* Create a temporary buffer to hold the read in report from the host */
  94             uint8_t ConsoleData[CONSOLE_EPSIZE];
  95
  96             /* Read Console Report Data */
  97             Endpoint_Read_Stream_LE(&ConsoleData, sizeof(ConsoleData), NULL);
  98
  99             /* Process Console Report Data */
 100             //ProcessConsoleHIDReport(ConsoleData);
 101         }
 102
 103         /* Finalize the stream transfer to send the last packet */
 104         Endpoint_ClearOUT();
 105     }
 106 #endif
 107
 108     /* IN packet */
 109     Endpoint_SelectEndpoint(CONSOLE_IN_EPNUM);
 110     if (!Endpoint_IsEnabled() || !Endpoint_IsConfigured()) {
 111         Endpoint_SelectEndpoint(ep);
 112         return;
 113     }
 114
 115     // fill empty bank
 116     while (Endpoint_IsReadWriteAllowed())
 117         Endpoint_Write_8(0);
 118
 119     // flash senchar packet
 120     if (Endpoint_IsINReady()) {
 121         Endpoint_ClearIN();
 122     }
 123
 124     Endpoint_SelectEndpoint(ep);
 125 }
 126 #else
 127 static void Console_Task(void)
 128 {
 129 }
 130 #endif
 131
 132
 133 /*******************************************************************************
 134  * USB Events
 135  ******************************************************************************/
 136 /** Event handler for the USB_Connect event. */
 137 void EVENT_USB_Device_Connect(void)
 138 {
 139 }
 140
 141 /** Event handler for the USB_Disconnect event. */
 142 void EVENT_USB_Device_Disconnect(void)
 143 {
 144 }
 145
 146 void EVENT_USB_Device_StartOfFrame(void)
 147 {
 148     Console_Task();
 149 }
 150
 151 /** Event handler for the USB_ConfigurationChanged event.
 152  * This is fired when the host sets the current configuration of the USB device after enumeration.
 153  */
 154 void EVENT_USB_Device_ConfigurationChanged(void)
 155 {
 156     bool ConfigSuccess = true;
 157
 158     /* Setup Keyboard HID Report Endpoints */
 159     ConfigSuccess &= Endpoint_ConfigureEndpoint(KEYBOARD_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 160                                                 KEYBOARD_EPSIZE, ENDPOINT_BANK_SINGLE);
 161
 162 #ifdef MOUSE_ENABLE
 163     /* Setup Mouse HID Report Endpoint */
 164     ConfigSuccess &= Endpoint_ConfigureEndpoint(MOUSE_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 165                                                 MOUSE_EPSIZE, ENDPOINT_BANK_SINGLE);
 166 #endif
 167
 168 #ifdef EXTRAKEY_ENABLE
 169     /* Setup Extra HID Report Endpoint */
 170     ConfigSuccess &= Endpoint_ConfigureEndpoint(EXTRAKEY_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 171                                                 EXTRAKEY_EPSIZE, ENDPOINT_BANK_SINGLE);
 172 #endif
 173
 174 #ifdef CONSOLE_ENABLE
 175     /* Setup Console HID Report Endpoints */
 176     ConfigSuccess &= Endpoint_ConfigureEndpoint(CONSOLE_IN_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_IN,
 177                                                 CONSOLE_EPSIZE, ENDPOINT_BANK_DOUBLE);
 178     ConfigSuccess &= Endpoint_ConfigureEndpoint(CONSOLE_OUT_EPNUM, EP_TYPE_INTERRUPT, ENDPOINT_DIR_OUT,
 179                                                 CONSOLE_EPSIZE, ENDPOINT_BANK_SINGLE);
 180 #endif
 181 }
 182
 183 /*
 184 Appendix G: HID Request Support Requirements
 185
 186 The following table enumerates the requests that need to be supported by various types of HID class devices.
 187
 188 Device type     GetReport   SetReport   GetIdle     SetIdle     GetProtocol SetProtocol
 189 ------------------------------------------------------------------------------------------
 190 Boot Mouse      Required    Optional    Optional    Optional    Required    Required
 191 Non-Boot Mouse  Required    Optional    Optional    Optional    Optional    Optional
 192 Boot Keyboard   Required    Optional    Required    Required    Required    Required
 193 Non-Boot Keybrd Required    Optional    Required    Required    Optional    Optional
 194 Other Device    Required    Optional    Optional    Optional    Optional    Optional
 195 */
 196 /** Event handler for the USB_ControlRequest event.
 197  *  This is fired before passing along unhandled control requests to the library for processing internally.
 198  */
 199 void EVENT_USB_Device_ControlRequest(void)
 200 {
 201     uint8_t* ReportData = NULL;
 202     uint8_t  ReportSize = 0;
 203
 204     /* Handle HID Class specific requests */
 205     switch (USB_ControlRequest.bRequest)
 206     {
 207         case HID_REQ_GetReport:
 208             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 209             {
 210                 Endpoint_ClearSETUP();
 211
 212                 // Interface
 213                 switch (USB_ControlRequest.wIndex) {
 214                 case KEYBOARD_INTERFACE:
 215                     // TODO: test/check
 216                     ReportData = (uint8_t*)&keyboard_report_sent;
 217                     ReportSize = sizeof(keyboard_report_sent);
 218                     break;
 219                 }
 220
 221                 /* Write the report data to the control endpoint */
 222                 Endpoint_Write_Control_Stream_LE(ReportData, ReportSize);
 223                 Endpoint_ClearOUT();
 224             }
 225
 226             break;
 227         case HID_REQ_SetReport:
 228             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 229             {
 230
 231                 // Interface
 232                 switch (USB_ControlRequest.wIndex) {
 233                 case KEYBOARD_INTERFACE:
 234                     Endpoint_ClearSETUP();
 235
 236                     while (!(Endpoint_IsOUTReceived())) {
 237                         if (USB_DeviceState == DEVICE_STATE_Unattached)
 238                           return;
 239                     }
 240                     keyboard_led_stats = Endpoint_Read_8();
 241
 242                     Endpoint_ClearOUT();
 243                     Endpoint_ClearStatusStage();
 244                     break;
 245                 }
 246
 247             }
 248
 249             break;
 250
 251         case HID_REQ_GetProtocol:
 252             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 253             {
 254                 Endpoint_ClearSETUP();
 255                 while (!(Endpoint_IsINReady()));
 256                 Endpoint_Write_8(protocol_report);
 257                 Endpoint_ClearIN();
 258                 Endpoint_ClearStatusStage();
 259             }
 260
 261             break;
 262         case HID_REQ_SetProtocol:
 263             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 264             {
 265                 Endpoint_ClearSETUP();
 266                 Endpoint_ClearStatusStage();
 267
 268                 protocol_report = ((USB_ControlRequest.wValue & 0xFF) != 0x00);
 269             }
 270
 271             break;
 272         case HID_REQ_SetIdle:
 273             if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 274             {
 275                 Endpoint_ClearSETUP();
 276                 Endpoint_ClearStatusStage();
 277
 278                 idle_duration = ((USB_ControlRequest.wValue & 0xFF00) >> 8);
 279             }
 280
 281             break;
 282         case HID_REQ_GetIdle:
 283             if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 284             {
 285                 Endpoint_ClearSETUP();
 286                 while (!(Endpoint_IsINReady()));
 287                 Endpoint_Write_8(idle_duration);
 288                 Endpoint_ClearIN();
 289                 Endpoint_ClearStatusStage();
 290             }
 291
 292             break;
 293     }
 294 }
 295
 296 /*******************************************************************************
 297  * Host driver
 298  ******************************************************************************/
 299 static uint8_t keyboard_leds(void)
 300 {
 301     return keyboard_led_stats;
 302 }
 303
 304 static void send_keyboard(report_keyboard_t *report)
 305 {
 306     uint8_t timeout = 0;
 307
 308     // TODO: handle NKRO report
 309     /* Select the Keyboard Report Endpoint */
 310     Endpoint_SelectEndpoint(KEYBOARD_IN_EPNUM);
 311
 312     /* Check if Keyboard Endpoint Ready for Read/Write */
 313     while (--timeout && !Endpoint_IsReadWriteAllowed()) ;
 314
 315     /* Write Keyboard Report Data */
 316     Endpoint_Write_Stream_LE(report, sizeof(report_keyboard_t), NULL);
 317
 318     /* Finalize the stream transfer to send the last packet */
 319     Endpoint_ClearIN();
 320
 321     keyboard_report_sent = *report;
 322 }
 323
 324 static void send_mouse(report_mouse_t *report)
 325 {
 326 #ifdef MOUSE_ENABLE
 327     uint8_t timeout = 0;
 328
 329     /* Select the Mouse Report Endpoint */
 330     Endpoint_SelectEndpoint(MOUSE_IN_EPNUM);
 331
 332     /* Check if Mouse Endpoint Ready for Read/Write */
 333     while (--timeout && !Endpoint_IsReadWriteAllowed()) ;
 334
 335     /* Write Mouse Report Data */
 336     Endpoint_Write_Stream_LE(report, sizeof(report_mouse_t), NULL);
 337
 338     /* Finalize the stream transfer to send the last packet */
 339     Endpoint_ClearIN();
 340 #endif
 341 }
 342
 343 static void send_system(uint16_t data)
 344 {
 345     uint8_t timeout = 0;
 346
 347     report_extra_t r = {
 348         .report_id = REPORT_ID_SYSTEM,
 349         .usage = data
 350     };
 351     Endpoint_SelectEndpoint(EXTRAKEY_IN_EPNUM);
 352     while (--timeout && !Endpoint_IsReadWriteAllowed()) ;
 353     Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
 354     Endpoint_ClearIN();
 355 }
 356
 357 static void send_consumer(uint16_t data)
 358 {
 359     uint8_t timeout = 0;
 360
 361     report_extra_t r = {
 362         .report_id = REPORT_ID_CONSUMER,
 363         .usage = data
 364     };
 365     Endpoint_SelectEndpoint(EXTRAKEY_IN_EPNUM);
 366     while (--timeout && !Endpoint_IsReadWriteAllowed()) ;
 367     Endpoint_Write_Stream_LE(&r, sizeof(report_extra_t), NULL);
 368     Endpoint_ClearIN();
 369 }
 370
 371
 372 /*******************************************************************************
 373  * sendchar
 374  ******************************************************************************/
 375 #ifdef CONSOLE_ENABLE
 376 #define SEND_TIMEOUT 5
 377 int8_t sendchar(uint8_t c)
 378 {
 379     // Not wait once timeouted.
 380     // Because sendchar() is called so many times, waiting each call causes big lag.
 381     static bool timeouted = false;
 382
 383     if (USB_DeviceState != DEVICE_STATE_Configured)
 384         return -1;
 385
 386     uint8_t ep = Endpoint_GetCurrentEndpoint();
 387     Endpoint_SelectEndpoint(CONSOLE_IN_EPNUM);
 388     if (!Endpoint_IsEnabled() || !Endpoint_IsConfigured()) {
 389         Endpoint_SelectEndpoint(ep);
 390         return -1;
 391     }
 392
 393     if (timeouted && !Endpoint_IsReadWriteAllowed()) {
 394         Endpoint_SelectEndpoint(ep);
 395         return - 1;
 396     }
 397
 398     timeouted = false;
 399
 400     uint8_t timeout = SEND_TIMEOUT;
 401     uint16_t prevFN = USB_Device_GetFrameNumber();
 402     while (!Endpoint_IsReadWriteAllowed()) {
 403         switch (USB_DeviceState) {
 404         case DEVICE_STATE_Unattached:
 405         case DEVICE_STATE_Suspended:
 406             return -1;
 407         }
 408         if (Endpoint_IsStalled()) {
 409             Endpoint_SelectEndpoint(ep);
 410             return -1;
 411         }
 412         if (prevFN != USB_Device_GetFrameNumber()) {
 413             if (!(timeout--)) {
 414                 timeouted = true;
 415                 Endpoint_SelectEndpoint(ep);
 416                 return -1;
 417             }
 418             prevFN = USB_Device_GetFrameNumber();
 419         }
 420     }
 421
 422     Endpoint_Write_8(c);
 423
 424     // send when bank is full
 425     if (!Endpoint_IsReadWriteAllowed())
 426         Endpoint_ClearIN();
 427
 428     Endpoint_SelectEndpoint(ep);
 429     return 0;
 430 }
 431 #else
 432 int8_t sendchar(uint8_t c)
 433 {
 434     return 0;
 435 }
 436 #endif
 437
 438
 439 /*******************************************************************************
 440  * main
 441  ******************************************************************************/
 442 static void SetupHardware(void)
 443 {
 444     /* Disable watchdog if enabled by bootloader/fuses */
 445     MCUSR &= ~(1 << WDRF);
 446     wdt_disable();
 447
 448     /* Disable clock division */
 449     clock_prescale_set(clock_div_1);
 450
 451     // Leonardo needs. Without this USB device is not recognized.
 452     USB_Disable();
 453
 454     USB_Init();
 455
 456     // for Console_Task
 457     USB_Device_EnableSOFEvents();
 458 }
 459
 460 int main(void)  __attribute__ ((weak));
 461 int main(void)
 462 {
 463     SetupHardware();
 464     keyboard_init();
 465     host_set_driver(&lufa_driver);
 466     sei();
 467
 468     // TODO: can't print here
 469     debug("LUFA init\n");
 470     while (1) {
 471         keyboard_task();
 472
 473 #if !defined(INTERRUPT_CONTROL_ENDPOINT)
 474         USB_USBTask();
 475 #endif
 476     }
 477 }