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             if (!debug_keyboard) {
  46                 print("keys: ");
  47                 for (int i = 0; i < REPORT_KEYS; i++) { phex(kbuf[kbuf_tail].keys[i]); print(" "); }
  48                 print(" mods: "); phex((kbuf[kbuf_tail]).mods); print("\n");
  49             }
  50             kbuf_tail = (kbuf_tail + 1) % KBUF_SIZE;
  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
  93
  94 static void send_mouse(report_mouse_t *report)
  95 {
  96     report->report_id = REPORT_ID_MOUSE;
  97     if (usbInterruptIsReady3()) {
  98         usbSetInterrupt3((void *)report, sizeof(*report));
  99     }
 100 }
 101
 102 static void send_system(uint16_t data)
 103 {
 104     // Not need static?
 105     static uint8_t report[] = { REPORT_ID_SYSTEM, 0, 0 };
 106     report[1] = data&0xFF;
 107     report[2] = (data>>8)&0xFF;
 108     if (usbInterruptIsReady3()) {
 109         usbSetInterrupt3((void *)&report, sizeof(report));
 110     }
 111 }
 112
 113 static void send_consumer(uint16_t data)
 114 {
 115     static uint16_t last_data = 0;
 116     if (data == last_data) return;
 117     last_data = data;
 118
 119     // Not need static?
 120     static uint8_t report[] = { REPORT_ID_CONSUMER, 0, 0 };
 121     report[1] = data&0xFF;
 122     report[2] = (data>>8)&0xFF;
 123     if (usbInterruptIsReady3()) {
 124         usbSetInterrupt3((void *)&report, sizeof(report));
 125     }
 126 }
 127
 128
 129
 130 /*------------------------------------------------------------------*
 131  * Request from host                                                *
 132  *------------------------------------------------------------------*/
 133 static struct {
 134     uint16_t        len;
 135     enum {
 136         NONE,
 137         SET_LED
 138     }               kind;
 139 } last_req;
 140
 141 usbMsgLen_t usbFunctionSetup(uchar data[8])
 142 {
 143 usbRequest_t    *rq = (void *)data;
 144
 145     if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS){    /* class request type */
 146         if(rq->bRequest == USBRQ_HID_GET_REPORT){
 147             debug("GET_REPORT:");
 148             /* we only have one report type, so don't look at wValue */
 149             usbMsgPtr = (void *)keyboard_report_prev;
 150             return sizeof(*keyboard_report_prev);
 151         }else if(rq->bRequest == USBRQ_HID_GET_IDLE){
 152             debug("GET_IDLE: ");
 153             //debug_hex(vusb_idle_rate);
 154             usbMsgPtr = &vusb_idle_rate;
 155             return 1;
 156         }else if(rq->bRequest == USBRQ_HID_SET_IDLE){
 157             vusb_idle_rate = rq->wValue.bytes[1];
 158             debug("SET_IDLE: ");
 159             debug_hex(vusb_idle_rate);
 160         }else if(rq->bRequest == USBRQ_HID_SET_REPORT){
 161             debug("SET_REPORT: ");
 162             // Report Type: 0x02(Out)/ReportID: 0x00(none) && Interface: 0(keyboard)
 163             if (rq->wValue.word == 0x0200 && rq->wIndex.word == 0) {
 164                 debug("SET_LED: ");
 165                 last_req.kind = SET_LED;
 166                 last_req.len = rq->wLength.word;
 167             }
 168             return USB_NO_MSG; // to get data in usbFunctionWrite
 169         } else {
 170             debug("UNKNOWN:");
 171         }
 172     }else{
 173         debug("VENDOR:");
 174         /* no vendor specific requests implemented */
 175     }
 176     debug("\n");
 177     return 0;   /* default for not implemented requests: return no data back to host */
 178 }
 179
 180 uchar usbFunctionWrite(uchar *data, uchar len)
 181 {
 182     if (last_req.len == 0) {
 183         return -1;
 184     }
 185     switch (last_req.kind) {
 186         case SET_LED:
 187             debug("SET_LED: ");
 188             debug_hex(data[0]);
 189             debug("\n");
 190             vusb_keyboard_leds = data[0];
 191             last_req.len = 0;
 192             return 1;
 193             break;
 194         case NONE:
 195         default:
 196             return -1;
 197             break;
 198     }
 199     return 1;
 200 }
 201
 202
 203
 204 /*------------------------------------------------------------------*
 205  * Descriptors                                                      *
 206  *------------------------------------------------------------------*/
 207
 208 /*
 209  * Report Descriptor for keyboard
 210  *
 211  * from an example in HID spec appendix
 212  */
 213 PROGMEM uchar keyboard_hid_report[] = {
 214     0x05, 0x01,          // Usage Page (Generic Desktop),
 215     0x09, 0x06,          // Usage (Keyboard),
 216     0xA1, 0x01,          // Collection (Application),
 217     0x75, 0x01,          //   Report Size (1),
 218     0x95, 0x08,          //   Report Count (8),
 219     0x05, 0x07,          //   Usage Page (Key Codes),
 220     0x19, 0xE0,          //   Usage Minimum (224),
 221     0x29, 0xE7,          //   Usage Maximum (231),
 222     0x15, 0x00,          //   Logical Minimum (0),
 223     0x25, 0x01,          //   Logical Maximum (1),
 224     0x81, 0x02,          //   Input (Data, Variable, Absolute), ;Modifier byte
 225     0x95, 0x01,          //   Report Count (1),
 226     0x75, 0x08,          //   Report Size (8),
 227     0x81, 0x03,          //   Input (Constant),                 ;Reserved byte
 228     0x95, 0x05,          //   Report Count (5),
 229     0x75, 0x01,          //   Report Size (1),
 230     0x05, 0x08,          //   Usage Page (LEDs),
 231     0x19, 0x01,          //   Usage Minimum (1),
 232     0x29, 0x05,          //   Usage Maximum (5),
 233     0x91, 0x02,          //   Output (Data, Variable, Absolute), ;LED report
 234     0x95, 0x01,          //   Report Count (1),
 235     0x75, 0x03,          //   Report Size (3),
 236     0x91, 0x03,          //   Output (Constant),                 ;LED report padding
 237     0x95, 0x06,          //   Report Count (6),
 238     0x75, 0x08,          //   Report Size (8),
 239     0x15, 0x00,          //   Logical Minimum (0),
 240     0x25, 0xFF,          //   Logical Maximum(255),
 241     0x05, 0x07,          //   Usage Page (Key Codes),
 242     0x19, 0x00,          //   Usage Minimum (0),
 243     0x29, 0xFF,          //   Usage Maximum (255),
 244     0x81, 0x00,          //   Input (Data, Array),
 245     0xc0                 // End Collection
 246 };
 247
 248 /*
 249  * Report Descriptor for mouse
 250  *
 251  * Mouse Protocol 1, HID 1.11 spec, Appendix B, page 59-60, with wheel extension
 252  * http://www.microchip.com/forums/tm.aspx?high=&m=391435&mpage=1#391521
 253  * http://www.keil.com/forum/15671/
 254  * http://www.microsoft.com/whdc/device/input/wheel.mspx
 255  */
 256 PROGMEM uchar mouse_hid_report[] = {
 257     /* mouse */
 258     0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
 259     0x09, 0x02,                    // USAGE (Mouse)
 260     0xa1, 0x01,                    // COLLECTION (Application)
 261     0x85, REPORT_ID_MOUSE,         //   REPORT_ID (1)
 262     0x09, 0x01,                    //   USAGE (Pointer)
 263     0xa1, 0x00,                    //   COLLECTION (Physical)
 264                                    // ----------------------------  Buttons
 265     0x05, 0x09,                    //     USAGE_PAGE (Button)
 266     0x19, 0x01,                    //     USAGE_MINIMUM (Button 1)
 267     0x29, 0x05,                    //     USAGE_MAXIMUM (Button 5)
 268     0x15, 0x00,                    //     LOGICAL_MINIMUM (0)
 269     0x25, 0x01,                    //     LOGICAL_MAXIMUM (1)
 270     0x75, 0x01,                    //     REPORT_SIZE (1)
 271     0x95, 0x05,                    //     REPORT_COUNT (5)
 272     0x81, 0x02,                    //     INPUT (Data,Var,Abs)
 273     0x75, 0x03,                    //     REPORT_SIZE (3)
 274     0x95, 0x01,                    //     REPORT_COUNT (1)
 275     0x81, 0x03,                    //     INPUT (Cnst,Var,Abs)
 276                                    // ----------------------------  X,Y position
 277     0x05, 0x01,                    //     USAGE_PAGE (Generic Desktop)
 278     0x09, 0x30,                    //     USAGE (X)
 279     0x09, 0x31,                    //     USAGE (Y)
 280     0x15, 0x81,                    //     LOGICAL_MINIMUM (-127)
 281     0x25, 0x7f,                    //     LOGICAL_MAXIMUM (127)
 282     0x75, 0x08,                    //     REPORT_SIZE (8)
 283     0x95, 0x02,                    //     REPORT_COUNT (2)
 284     0x81, 0x06,                    //     INPUT (Data,Var,Rel)
 285                                    // ----------------------------  Vertical wheel
 286     0x09, 0x38,                    //     USAGE (Wheel)
 287     0x15, 0x81,                    //     LOGICAL_MINIMUM (-127)
 288     0x25, 0x7f,                    //     LOGICAL_MAXIMUM (127)
 289     0x35, 0x00,                    //     PHYSICAL_MINIMUM (0)        - reset physical
 290     0x45, 0x00,                    //     PHYSICAL_MAXIMUM (0)
 291     0x75, 0x08,                    //     REPORT_SIZE (8)
 292     0x95, 0x01,                    //     REPORT_COUNT (1)
 293     0x81, 0x06,                    //     INPUT (Data,Var,Rel)
 294                                    // ----------------------------  Horizontal wheel
 295     0x05, 0x0c,                    //     USAGE_PAGE (Consumer Devices)
 296     0x0a, 0x38, 0x02,              //     USAGE (AC Pan)
 297     0x15, 0x81,                    //     LOGICAL_MINIMUM (-127)
 298     0x25, 0x7f,                    //     LOGICAL_MAXIMUM (127)
 299     0x75, 0x08,                    //     REPORT_SIZE (8)
 300     0x95, 0x01,                    //     REPORT_COUNT (1)
 301     0x81, 0x06,                    //     INPUT (Data,Var,Rel)
 302     0xc0,                          //   END_COLLECTION
 303     0xc0,                          // END_COLLECTION
 304     /* system control */
 305     0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
 306     0x09, 0x80,                    // USAGE (System Control)
 307     0xa1, 0x01,                    // COLLECTION (Application)
 308     0x85, REPORT_ID_SYSTEM,        //   REPORT_ID (2)
 309     0x15, 0x01,                    //   LOGICAL_MINIMUM (0x1)
 310     0x25, 0xb7,                    //   LOGICAL_MAXIMUM (0xb7)
 311     0x19, 0x01,                    //   USAGE_MINIMUM (0x1)
 312     0x29, 0xb7,                    //   USAGE_MAXIMUM (0xb7)
 313     0x75, 0x10,                    //   REPORT_SIZE (16)
 314     0x95, 0x01,                    //   REPORT_COUNT (1)
 315     0x81, 0x00,                    //   INPUT (Data,Array,Abs)
 316     0xc0,                          // END_COLLECTION
 317     /* consumer */
 318     0x05, 0x0c,                    // USAGE_PAGE (Consumer Devices)
 319     0x09, 0x01,                    // USAGE (Consumer Control)
 320     0xa1, 0x01,                    // COLLECTION (Application)
 321     0x85, REPORT_ID_CONSUMER,      //   REPORT_ID (3)
 322     0x15, 0x01,                    //   LOGICAL_MINIMUM (0x1)
 323     0x26, 0x9c, 0x02,              //   LOGICAL_MAXIMUM (0x29c)
 324     0x19, 0x01,                    //   USAGE_MINIMUM (0x1)
 325     0x2a, 0x9c, 0x02,              //   USAGE_MAXIMUM (0x29c)
 326     0x75, 0x10,                    //   REPORT_SIZE (16)
 327     0x95, 0x01,                    //   REPORT_COUNT (1)
 328     0x81, 0x00,                    //   INPUT (Data,Array,Abs)
 329     0xc0,                          // END_COLLECTION
 330 };
 331
 332
 333 /*
 334  * Descriptor for compite device: Keyboard + Mouse
 335  *
 336  * contains: device, interface, HID and endpoint descriptors
 337  */
 338 #if USB_CFG_DESCR_PROPS_CONFIGURATION
 339 PROGMEM char usbDescriptorConfiguration[] = {    /* USB configuration descriptor */
 340     9,          /* sizeof(usbDescriptorConfiguration): length of descriptor in bytes */
 341     USBDESCR_CONFIG,    /* descriptor type */
 342     9 + (9 + 9 + 7) + (9 + 9 + 7), 0,
 343     //18 + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT3 + 9, 0,
 344                 /* total length of data returned (including inlined descriptors) */
 345     2,          /* number of interfaces in this configuration */
 346     1,          /* index of this configuration */
 347     0,          /* configuration name string index */
 348 #if USB_CFG_IS_SELF_POWERED
 349     (1 << 7) | USBATTR_SELFPOWER,       /* attributes */
 350 #else
 351     (1 << 7),                           /* attributes */
 352 #endif
 353     USB_CFG_MAX_BUS_POWER/2,            /* max USB current in 2mA units */
 354
 355     /*
 356      * Keyboard interface
 357      */
 358     /* Interface descriptor */
 359     9,          /* sizeof(usbDescrInterface): length of descriptor in bytes */
 360     USBDESCR_INTERFACE, /* descriptor type */
 361     0,          /* index of this interface */
 362     0,          /* alternate setting for this interface */
 363     USB_CFG_HAVE_INTRIN_ENDPOINT, /* endpoints excl 0: number of endpoint descriptors to follow */
 364     USB_CFG_INTERFACE_CLASS,
 365     USB_CFG_INTERFACE_SUBCLASS,
 366     USB_CFG_INTERFACE_PROTOCOL,
 367     0,          /* string index for interface */
 368     /* HID descriptor */
 369     9,          /* sizeof(usbDescrHID): length of descriptor in bytes */
 370     USBDESCR_HID,   /* descriptor type: HID */
 371     0x01, 0x01, /* BCD representation of HID version */
 372     0x00,       /* target country code */
 373     0x01,       /* number of HID Report (or other HID class) Descriptor infos to follow */
 374     0x22,       /* descriptor type: report */
 375     sizeof(keyboard_hid_report), 0,  /* total length of report descriptor */
 376     /* Endpoint descriptor */
 377 #if USB_CFG_HAVE_INTRIN_ENDPOINT    /* endpoint descriptor for endpoint 1 */
 378     7,          /* sizeof(usbDescrEndpoint) */
 379     USBDESCR_ENDPOINT,  /* descriptor type = endpoint */
 380     (char)0x81, /* IN endpoint number 1 */
 381     0x03,       /* attrib: Interrupt endpoint */
 382     8, 0,       /* maximum packet size */
 383     USB_CFG_INTR_POLL_INTERVAL, /* in ms */
 384 #endif
 385
 386     /*
 387      * Mouse interface
 388      */
 389     /* Interface descriptor */
 390     9,          /* sizeof(usbDescrInterface): length of descriptor in bytes */
 391     USBDESCR_INTERFACE, /* descriptor type */
 392     1,          /* index of this interface */
 393     0,          /* alternate setting for this interface */
 394     USB_CFG_HAVE_INTRIN_ENDPOINT3, /* endpoints excl 0: number of endpoint descriptors to follow */
 395     0x03,       /* CLASS: HID */
 396     0,          /* SUBCLASS: none */
 397     0,          /* PROTOCOL: none */
 398     0,          /* string index for interface */
 399     /* HID descriptor */
 400     9,          /* sizeof(usbDescrHID): length of descriptor in bytes */
 401     USBDESCR_HID,   /* descriptor type: HID */
 402     0x01, 0x01, /* BCD representation of HID version */
 403     0x00,       /* target country code */
 404     0x01,       /* number of HID Report (or other HID class) Descriptor infos to follow */
 405     0x22,       /* descriptor type: report */
 406     sizeof(mouse_hid_report), 0,  /* total length of report descriptor */
 407 #if USB_CFG_HAVE_INTRIN_ENDPOINT3   /* endpoint descriptor for endpoint 3 */
 408     /* Endpoint descriptor */
 409     7,          /* sizeof(usbDescrEndpoint) */
 410     USBDESCR_ENDPOINT,  /* descriptor type = endpoint */
 411     (char)(0x80 | USB_CFG_EP3_NUMBER), /* IN endpoint number 3 */
 412     0x03,       /* attrib: Interrupt endpoint */
 413     8, 0,       /* maximum packet size */
 414     USB_CFG_INTR_POLL_INTERVAL, /* in ms */
 415 #endif
 416 };
 417 #endif
 418
 419
 420 USB_PUBLIC usbMsgLen_t usbFunctionDescriptor(struct usbRequest *rq)
 421 {
 422     usbMsgLen_t len = 0;
 423
 424 /*
 425     debug("usbFunctionDescriptor: ");
 426     debug_hex(rq->bmRequestType); debug(" ");
 427     debug_hex(rq->bRequest); debug(" ");
 428     debug_hex16(rq->wValue.word); debug(" ");
 429     debug_hex16(rq->wIndex.word); debug(" ");
 430     debug_hex16(rq->wLength.word); debug("\n");
 431 */
 432     switch (rq->wValue.bytes[1]) {
 433 #if USB_CFG_DESCR_PROPS_CONFIGURATION
 434         case USBDESCR_CONFIG:
 435             usbMsgPtr = (unsigned char *)usbDescriptorConfiguration;
 436             len = sizeof(usbDescriptorConfiguration);
 437             break;
 438 #endif
 439         case USBDESCR_HID:
 440             switch (rq->wValue.bytes[0]) {
 441                 case 0:
 442                     usbMsgPtr = (unsigned char *)(usbDescriptorConfiguration + 9 + 9);
 443                     len = 9;
 444                     break;
 445                 case 1:
 446                     usbMsgPtr = (unsigned char *)(usbDescriptorConfiguration + 9 + (9 + 9 + 7) + 9);
 447                     len = 9;
 448                     break;
 449             }
 450             break;
 451         case USBDESCR_HID_REPORT:
 452             /* interface index */
 453             switch (rq->wIndex.word) {
 454                 case 0:
 455                     usbMsgPtr = keyboard_hid_report;
 456                     len = sizeof(keyboard_hid_report);
 457                     break;
 458                 case 1:
 459                     usbMsgPtr = mouse_hid_report;
 460                     len = sizeof(mouse_hid_report);
 461                     break;
 462             }
 463             break;
 464     }
 465     //debug("desc len: "); debug_hex(len); debug("\n");
 466     return len;
 467 }