protocol/vusb/vusb.c

   1 /*
   2 Copyright 2011 Jun Wako <wakojun@gmail.com>
   3
   4 This program is free software: you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License as published by
   6 the Free Software Foundation, either version 2 of the License, or
   7 (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18 #include <stdint.h>
  19 #include "usbdrv.h"
  20 #include "usbconfig.h"
  21 #include "host.h"
  22 #include "report.h"
  23 #include "print.h"
  24 #include "debug.h"
  25 #include "host_driver.h"
  26 #include "vusb.h"
  27
  28
  29 static uint8_t vusb_keyboard_leds = 0;
  30 static uint8_t vusb_idle_rate = 0;
  31
  32 /* Keyboard report send buffer */
  33 #define KBUF_SIZE 16
  34 static report_keyboard_t kbuf[KBUF_SIZE];
  35 static uint8_t kbuf_head = 0;
  36 static uint8_t kbuf_tail = 0;
  37
  38
  39 /* transfer keyboard report from buffer */
  40 void vusb_transfer_keyboard(void)
  41 {
  42     if (usbInterruptIsReady()) {
  43         if (kbuf_head != kbuf_tail) {
  44             usbSetInterrupt((void *)&kbuf[kbuf_tail], sizeof(report_keyboard_t));
  45             kbuf_tail = (kbuf_tail + 1) % KBUF_SIZE;
  46             if (debug_keyboard) {
  47                 print("V-USB: kbuf["); pdec(kbuf_tail); print("->"); pdec(kbuf_head); print("](");
  48                 phex((kbuf_head < kbuf_tail) ? (KBUF_SIZE - kbuf_tail + kbuf_head) : (kbuf_head - kbuf_tail));
  49                 print(")\n");
  50             }
  51         }
  52     }
  53 }
  54
  55
  56 /*------------------------------------------------------------------*
  57  * Host driver
  58  *------------------------------------------------------------------*/
  59 static uint8_t keyboard_leds(void);
  60 static void send_keyboard(report_keyboard_t *report);
  61 static void send_mouse(report_mouse_t *report);
  62 static void send_system(uint16_t data);
  63 static void send_consumer(uint16_t data);
  64
  65 static host_driver_t driver = {
  66         keyboard_leds,
  67         send_keyboard,
  68         send_mouse,
  69         send_system,
  70         send_consumer
  71 };
  72
  73 host_driver_t *vusb_driver(void)
  74 {
  75     return &driver;
  76 }
  77
  78 static uint8_t keyboard_leds(void) {
  79     return vusb_keyboard_leds;
  80 }
  81
  82 static void send_keyboard(report_keyboard_t *report)
  83 {
  84     uint8_t next = (kbuf_head + 1) % KBUF_SIZE;
  85     if (next != kbuf_tail) {
  86         kbuf[kbuf_head] = *report;
  87         kbuf_head = next;
  88     } else {
  89         debug("kbuf: full\n");
  90     }
  91
  92     // NOTE: send key strokes of Macro
  93     usbPoll();
  94     vusb_transfer_keyboard();
  95 }
  96
  97
  98 typedef struct {
  99     uint8_t report_id;
 100     report_mouse_t report;
 101 } __attribute__ ((packed)) vusb_mouse_report_t;
 102
 103 static void send_mouse(report_mouse_t *report)
 104 {
 105     vusb_mouse_report_t r = {
 106         .report_id = REPORT_ID_MOUSE,
 107         .report = *report
 108     };
 109     if (usbInterruptIsReady3()) {
 110         usbSetInterrupt3((void *)&r, sizeof(vusb_mouse_report_t));
 111     }
 112 }
 113
 114
 115 typedef struct {
 116     uint8_t  report_id;
 117     uint16_t usage;
 118 } __attribute__ ((packed)) report_extra_t;
 119
 120 static void send_system(uint16_t data)
 121 {
 122     static uint16_t last_data = 0;
 123     if (data == last_data) return;
 124     last_data = data;
 125
 126     report_extra_t report = {
 127         .report_id = REPORT_ID_SYSTEM,
 128         .usage = data
 129     };
 130     if (usbInterruptIsReady3()) {
 131         usbSetInterrupt3((void *)&report, sizeof(report));
 132     }
 133 }
 134
 135 static void send_consumer(uint16_t data)
 136 {
 137     static uint16_t last_data = 0;
 138     if (data == last_data) return;
 139     last_data = data;
 140
 141     report_extra_t report = {
 142         .report_id = REPORT_ID_CONSUMER,
 143         .usage = data
 144     };
 145     if (usbInterruptIsReady3()) {
 146         usbSetInterrupt3((void *)&report, sizeof(report));
 147     }
 148 }
 149
 150
 151
 152 /*------------------------------------------------------------------*
 153  * Request from host                                                *
 154  *------------------------------------------------------------------*/
 155 static struct {
 156     uint16_t        len;
 157     enum {
 158         NONE,
 159         SET_LED
 160     }               kind;
 161 } last_req;
 162
 163 usbMsgLen_t usbFunctionSetup(uchar data[8])
 164 {
 165 usbRequest_t    *rq = (void *)data;
 166
 167     if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS){    /* class request type */
 168         if(rq->bRequest == USBRQ_HID_GET_REPORT){
 169             debug("GET_REPORT:");
 170             /* we only have one report type, so don't look at wValue */
 171             usbMsgPtr = (void *)keyboard_report;
 172             return sizeof(*keyboard_report);
 173         }else if(rq->bRequest == USBRQ_HID_GET_IDLE){
 174             debug("GET_IDLE: ");
 175             //debug_hex(vusb_idle_rate);
 176             usbMsgPtr = &vusb_idle_rate;
 177             return 1;
 178         }else if(rq->bRequest == USBRQ_HID_SET_IDLE){
 179             vusb_idle_rate = rq->wValue.bytes[1];
 180             debug("SET_IDLE: ");
 181             debug_hex(vusb_idle_rate);
 182         }else if(rq->bRequest == USBRQ_HID_SET_REPORT){
 183             debug("SET_REPORT: ");
 184             // Report Type: 0x02(Out)/ReportID: 0x00(none) && Interface: 0(keyboard)
 185             if (rq->wValue.word == 0x0200 && rq->wIndex.word == 0) {
 186                 debug("SET_LED: ");
 187                 last_req.kind = SET_LED;
 188                 last_req.len = rq->wLength.word;
 189             }
 190             return USB_NO_MSG; // to get data in usbFunctionWrite
 191         } else {
 192             debug("UNKNOWN:");
 193         }
 194     }else{
 195         debug("VENDOR:");
 196         /* no vendor specific requests implemented */
 197     }
 198     debug("\n");
 199     return 0;   /* default for not implemented requests: return no data back to host */
 200 }
 201
 202 uchar usbFunctionWrite(uchar *data, uchar len)
 203 {
 204     if (last_req.len == 0) {
 205         return -1;
 206     }
 207     switch (last_req.kind) {
 208         case SET_LED:
 209             debug("SET_LED: ");
 210             debug_hex(data[0]);
 211             debug("\n");
 212             vusb_keyboard_leds = data[0];
 213             last_req.len = 0;
 214             return 1;
 215             break;
 216         case NONE:
 217         default:
 218             return -1;
 219             break;
 220     }
 221     return 1;
 222 }
 223
 224
 225
 226 /*------------------------------------------------------------------*
 227  * Descriptors                                                      *
 228  *------------------------------------------------------------------*/
 229
 230 /*
 231  * Report Descriptor for keyboard
 232  *
 233  * from an example in HID spec appendix
 234  */
 235 PROGMEM uchar keyboard_hid_report[] = {
 236     0x05, 0x01,          // Usage Page (Generic Desktop),
 237     0x09, 0x06,          // Usage (Keyboard),
 238     0xA1, 0x01,          // Collection (Application),
 239     0x75, 0x01,          //   Report Size (1),
 240     0x95, 0x08,          //   Report Count (8),
 241     0x05, 0x07,          //   Usage Page (Key Codes),
 242     0x19, 0xE0,          //   Usage Minimum (224),
 243     0x29, 0xE7,          //   Usage Maximum (231),
 244     0x15, 0x00,          //   Logical Minimum (0),
 245     0x25, 0x01,          //   Logical Maximum (1),
 246     0x81, 0x02,          //   Input (Data, Variable, Absolute), ;Modifier byte
 247     0x95, 0x01,          //   Report Count (1),
 248     0x75, 0x08,          //   Report Size (8),
 249     0x81, 0x03,          //   Input (Constant),                 ;Reserved byte
 250     0x95, 0x05,          //   Report Count (5),
 251     0x75, 0x01,          //   Report Size (1),
 252     0x05, 0x08,          //   Usage Page (LEDs),
 253     0x19, 0x01,          //   Usage Minimum (1),
 254     0x29, 0x05,          //   Usage Maximum (5),
 255     0x91, 0x02,          //   Output (Data, Variable, Absolute), ;LED report
 256     0x95, 0x01,          //   Report Count (1),
 257     0x75, 0x03,          //   Report Size (3),
 258     0x91, 0x03,          //   Output (Constant),                 ;LED report padding
 259     0x95, 0x06,          //   Report Count (6),
 260     0x75, 0x08,          //   Report Size (8),
 261     0x15, 0x00,          //   Logical Minimum (0),
 262     0x25, 0xFF,          //   Logical Maximum(255),
 263     0x05, 0x07,          //   Usage Page (Key Codes),
 264     0x19, 0x00,          //   Usage Minimum (0),
 265     0x29, 0xFF,          //   Usage Maximum (255),
 266     0x81, 0x00,          //   Input (Data, Array),
 267     0xc0                 // End Collection
 268 };
 269
 270 /*
 271  * Report Descriptor for mouse
 272  *
 273  * Mouse Protocol 1, HID 1.11 spec, Appendix B, page 59-60, with wheel extension
 274  * http://www.microchip.com/forums/tm.aspx?high=&m=391435&mpage=1#391521
 275  * http://www.keil.com/forum/15671/
 276  * http://www.microsoft.com/whdc/device/input/wheel.mspx
 277  */
 278 PROGMEM uchar mouse_hid_report[] = {
 279     /* mouse */
 280     0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
 281     0x09, 0x02,                    // USAGE (Mouse)
 282     0xa1, 0x01,                    // COLLECTION (Application)
 283     0x85, REPORT_ID_MOUSE,         //   REPORT_ID (1)
 284     0x09, 0x01,                    //   USAGE (Pointer)
 285     0xa1, 0x00,                    //   COLLECTION (Physical)
 286                                    // ----------------------------  Buttons
 287     0x05, 0x09,                    //     USAGE_PAGE (Button)
 288     0x19, 0x01,                    //     USAGE_MINIMUM (Button 1)
 289     0x29, 0x05,                    //     USAGE_MAXIMUM (Button 5)
 290     0x15, 0x00,                    //     LOGICAL_MINIMUM (0)
 291     0x25, 0x01,                    //     LOGICAL_MAXIMUM (1)
 292     0x75, 0x01,                    //     REPORT_SIZE (1)
 293     0x95, 0x05,                    //     REPORT_COUNT (5)
 294     0x81, 0x02,                    //     INPUT (Data,Var,Abs)
 295     0x75, 0x03,                    //     REPORT_SIZE (3)
 296     0x95, 0x01,                    //     REPORT_COUNT (1)
 297     0x81, 0x03,                    //     INPUT (Cnst,Var,Abs)
 298                                    // ----------------------------  X,Y position
 299     0x05, 0x01,                    //     USAGE_PAGE (Generic Desktop)
 300     0x09, 0x30,                    //     USAGE (X)
 301     0x09, 0x31,                    //     USAGE (Y)
 302     0x15, 0x81,                    //     LOGICAL_MINIMUM (-127)
 303     0x25, 0x7f,                    //     LOGICAL_MAXIMUM (127)
 304     0x75, 0x08,                    //     REPORT_SIZE (8)
 305     0x95, 0x02,                    //     REPORT_COUNT (2)
 306     0x81, 0x06,                    //     INPUT (Data,Var,Rel)
 307                                    // ----------------------------  Vertical wheel
 308     0x09, 0x38,                    //     USAGE (Wheel)
 309     0x15, 0x81,                    //     LOGICAL_MINIMUM (-127)
 310     0x25, 0x7f,                    //     LOGICAL_MAXIMUM (127)
 311     0x35, 0x00,                    //     PHYSICAL_MINIMUM (0)        - reset physical
 312     0x45, 0x00,                    //     PHYSICAL_MAXIMUM (0)
 313     0x75, 0x08,                    //     REPORT_SIZE (8)
 314     0x95, 0x01,                    //     REPORT_COUNT (1)
 315     0x81, 0x06,                    //     INPUT (Data,Var,Rel)
 316                                    // ----------------------------  Horizontal wheel
 317     0x05, 0x0c,                    //     USAGE_PAGE (Consumer Devices)
 318     0x0a, 0x38, 0x02,              //     USAGE (AC Pan)
 319     0x15, 0x81,                    //     LOGICAL_MINIMUM (-127)
 320     0x25, 0x7f,                    //     LOGICAL_MAXIMUM (127)
 321     0x75, 0x08,                    //     REPORT_SIZE (8)
 322     0x95, 0x01,                    //     REPORT_COUNT (1)
 323     0x81, 0x06,                    //     INPUT (Data,Var,Rel)
 324     0xc0,                          //   END_COLLECTION
 325     0xc0,                          // END_COLLECTION
 326     /* system control */
 327     0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
 328     0x09, 0x80,                    // USAGE (System Control)
 329     0xa1, 0x01,                    // COLLECTION (Application)
 330     0x85, REPORT_ID_SYSTEM,        //   REPORT_ID (2)
 331     0x15, 0x01,                    //   LOGICAL_MINIMUM (0x1)
 332     0x25, 0xb7,                    //   LOGICAL_MAXIMUM (0xb7)
 333     0x19, 0x01,                    //   USAGE_MINIMUM (0x1)
 334     0x29, 0xb7,                    //   USAGE_MAXIMUM (0xb7)
 335     0x75, 0x10,                    //   REPORT_SIZE (16)
 336     0x95, 0x01,                    //   REPORT_COUNT (1)
 337     0x81, 0x00,                    //   INPUT (Data,Array,Abs)
 338     0xc0,                          // END_COLLECTION
 339     /* consumer */
 340     0x05, 0x0c,                    // USAGE_PAGE (Consumer Devices)
 341     0x09, 0x01,                    // USAGE (Consumer Control)
 342     0xa1, 0x01,                    // COLLECTION (Application)
 343     0x85, REPORT_ID_CONSUMER,      //   REPORT_ID (3)
 344     0x15, 0x01,                    //   LOGICAL_MINIMUM (0x1)
 345     0x26, 0x9c, 0x02,              //   LOGICAL_MAXIMUM (0x29c)
 346     0x19, 0x01,                    //   USAGE_MINIMUM (0x1)
 347     0x2a, 0x9c, 0x02,              //   USAGE_MAXIMUM (0x29c)
 348     0x75, 0x10,                    //   REPORT_SIZE (16)
 349     0x95, 0x01,                    //   REPORT_COUNT (1)
 350     0x81, 0x00,                    //   INPUT (Data,Array,Abs)
 351     0xc0,                          // END_COLLECTION
 352 };
 353
 354
 355 /*
 356  * Descriptor for compite device: Keyboard + Mouse
 357  *
 358  * contains: device, interface, HID and endpoint descriptors
 359  */
 360 #if USB_CFG_DESCR_PROPS_CONFIGURATION
 361 PROGMEM char usbDescriptorConfiguration[] = {    /* USB configuration descriptor */
 362     9,          /* sizeof(usbDescriptorConfiguration): length of descriptor in bytes */
 363     USBDESCR_CONFIG,    /* descriptor type */
 364     9 + (9 + 9 + 7) + (9 + 9 + 7), 0,
 365     //18 + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT3 + 9, 0,
 366                 /* total length of data returned (including inlined descriptors) */
 367     2,          /* number of interfaces in this configuration */
 368     1,          /* index of this configuration */
 369     0,          /* configuration name string index */
 370 #if USB_CFG_IS_SELF_POWERED
 371     (1 << 7) | USBATTR_SELFPOWER,       /* attributes */
 372 #else
 373     (1 << 7),                           /* attributes */
 374 #endif
 375     USB_CFG_MAX_BUS_POWER/2,            /* max USB current in 2mA units */
 376
 377     /*
 378      * Keyboard interface
 379      */
 380     /* Interface descriptor */
 381     9,          /* sizeof(usbDescrInterface): length of descriptor in bytes */
 382     USBDESCR_INTERFACE, /* descriptor type */
 383     0,          /* index of this interface */
 384     0,          /* alternate setting for this interface */
 385     USB_CFG_HAVE_INTRIN_ENDPOINT, /* endpoints excl 0: number of endpoint descriptors to follow */
 386     USB_CFG_INTERFACE_CLASS,
 387     USB_CFG_INTERFACE_SUBCLASS,
 388     USB_CFG_INTERFACE_PROTOCOL,
 389     0,          /* string index for interface */
 390     /* HID descriptor */
 391     9,          /* sizeof(usbDescrHID): length of descriptor in bytes */
 392     USBDESCR_HID,   /* descriptor type: HID */
 393     0x01, 0x01, /* BCD representation of HID version */
 394     0x00,       /* target country code */
 395     0x01,       /* number of HID Report (or other HID class) Descriptor infos to follow */
 396     0x22,       /* descriptor type: report */
 397     sizeof(keyboard_hid_report), 0,  /* total length of report descriptor */
 398     /* Endpoint descriptor */
 399 #if USB_CFG_HAVE_INTRIN_ENDPOINT    /* endpoint descriptor for endpoint 1 */
 400     7,          /* sizeof(usbDescrEndpoint) */
 401     USBDESCR_ENDPOINT,  /* descriptor type = endpoint */
 402     (char)0x81, /* IN endpoint number 1 */
 403     0x03,       /* attrib: Interrupt endpoint */
 404     8, 0,       /* maximum packet size */
 405     USB_CFG_INTR_POLL_INTERVAL, /* in ms */
 406 #endif
 407
 408     /*
 409      * Mouse interface
 410      */
 411     /* Interface descriptor */
 412     9,          /* sizeof(usbDescrInterface): length of descriptor in bytes */
 413     USBDESCR_INTERFACE, /* descriptor type */
 414     1,          /* index of this interface */
 415     0,          /* alternate setting for this interface */
 416     USB_CFG_HAVE_INTRIN_ENDPOINT3, /* endpoints excl 0: number of endpoint descriptors to follow */
 417     0x03,       /* CLASS: HID */
 418     0,          /* SUBCLASS: none */
 419     0,          /* PROTOCOL: none */
 420     0,          /* string index for interface */
 421     /* HID descriptor */
 422     9,          /* sizeof(usbDescrHID): length of descriptor in bytes */
 423     USBDESCR_HID,   /* descriptor type: HID */
 424     0x01, 0x01, /* BCD representation of HID version */
 425     0x00,       /* target country code */
 426     0x01,       /* number of HID Report (or other HID class) Descriptor infos to follow */
 427     0x22,       /* descriptor type: report */
 428     sizeof(mouse_hid_report), 0,  /* total length of report descriptor */
 429 #if USB_CFG_HAVE_INTRIN_ENDPOINT3   /* endpoint descriptor for endpoint 3 */
 430     /* Endpoint descriptor */
 431     7,          /* sizeof(usbDescrEndpoint) */
 432     USBDESCR_ENDPOINT,  /* descriptor type = endpoint */
 433     (char)(0x80 | USB_CFG_EP3_NUMBER), /* IN endpoint number 3 */
 434     0x03,       /* attrib: Interrupt endpoint */
 435     8, 0,       /* maximum packet size */
 436     USB_CFG_INTR_POLL_INTERVAL, /* in ms */
 437 #endif
 438 };
 439 #endif
 440
 441
 442 USB_PUBLIC usbMsgLen_t usbFunctionDescriptor(struct usbRequest *rq)
 443 {
 444     usbMsgLen_t len = 0;
 445
 446 /*
 447     debug("usbFunctionDescriptor: ");
 448     debug_hex(rq->bmRequestType); debug(" ");
 449     debug_hex(rq->bRequest); debug(" ");
 450     debug_hex16(rq->wValue.word); debug(" ");
 451     debug_hex16(rq->wIndex.word); debug(" ");
 452     debug_hex16(rq->wLength.word); debug("\n");
 453 */
 454     switch (rq->wValue.bytes[1]) {
 455 #if USB_CFG_DESCR_PROPS_CONFIGURATION
 456         case USBDESCR_CONFIG:
 457             usbMsgPtr = (unsigned char *)usbDescriptorConfiguration;
 458             len = sizeof(usbDescriptorConfiguration);
 459             break;
 460 #endif
 461         case USBDESCR_HID:
 462             switch (rq->wValue.bytes[0]) {
 463                 case 0:
 464                     usbMsgPtr = (unsigned char *)(usbDescriptorConfiguration + 9 + 9);
 465                     len = 9;
 466                     break;
 467                 case 1:
 468                     usbMsgPtr = (unsigned char *)(usbDescriptorConfiguration + 9 + (9 + 9 + 7) + 9);
 469                     len = 9;
 470                     break;
 471             }
 472             break;
 473         case USBDESCR_HID_REPORT:
 474             /* interface index */
 475             switch (rq->wIndex.word) {
 476                 case 0:
 477                     usbMsgPtr = keyboard_hid_report;
 478                     len = sizeof(keyboard_hid_report);
 479                     break;
 480                 case 1:
 481                     usbMsgPtr = mouse_hid_report;
 482                     len = sizeof(mouse_hid_report);
 483                     break;
 484             }
 485             break;
 486     }
 487     //debug("desc len: "); debug_hex(len); debug("\n");
 488     return len;
 489 }