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