USB HID Keyboard

PROGMEM char usbHidReportDescriptor[USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH] = { 

0x05, 0x01,      // USAGE_PAGE (Generic Desktop)

0x09, 0x06,      // USAGE (Keyboard)

0xa1, 0x01,      // COLLECTION (Application)

0x05, 0x07,      //   USAGE_PAGE (Keyboard)

0x19, 0xe0,      //   USAGE_MINIMUM (Keyboard //                  LeftControl)

0x29, 0xe7,      //   USAGE_MAXIMUM (Keyboard //                  Right GUI)

0x15, 0x00,      //   LOGICAL_MINIMUM (0)

0x25, 0x01,      //   LOGICAL_MAXIMUM (1)

0x75, 0x01,      //   REPORT_SIZE (1)

0x95, 0x08,      //   REPORT_COUNT (8)

0x81, 0x02,      //   INPUT (Data,Var,Abs)

0x95, 0x01,      //   REPORT_COUNT (1)

0x75, 0x08,      //   REPORT_SIZE (8)

0x25, 0x65,      //   LOGICAL_MAXIMUM (101)

0x19, 0x00,      //   USAGE_MINIMUM (Reserved //   (no event indicated))

0x29, 0x65,      //   USAGE_MAXIMUM //   (Keyboard Application)

0x81, 0x00,      //   INPUT (Data,Ary,Abs)

0xc0              //    END_COLLECTION

};

#define KEY_UP  82

#define KEY_DOWN 81

#define KEY_LEFT 80

#define KEY_RIGHT 79

/* -----------------------------*/

static void timerPoll(void)

{

static uchar timerCnt;

static uchar i;

if(TIFR & (1 << TOV1)){

TIFR = (1 << TOV1); /* clear overflow */

if(++timerCnt >= 63){ /* ~ 1 second interval */

timerCnt = 0;

if (!FlagKey) {

FlagKey = 1;

if (++i > 3)

i=0;

switch (i) {

case 0:

reportBuffer[0] = 0;    

reportBuffer[1] = KEY_RIGHT;

break;

case 1:

reportBuffer[0] = 0;    

reportBuffer[1] = KEY_DOWN;

break;

case 2:

reportBuffer[0] = 0;

reportBuffer[1] = KEY_LEFT;

break;

case 3:

reportBuffer[0] = 0;

reportBuffer[1] = KEY_UP;

break;

}

}   

}

}

}

//

//

0x05, 0x01,      // USAGE_PAGE (Generic Desktop)

0x09, 0x06,      // USAGE (Keyboard)

0xa1, 0x01,      // COLLECTION (Application)

0x05, 0x07,      //   USAGE_PAGE (Keyboard)

0x19, 0xe0,      //   USAGE_MINIMUM (Keyboard //                  LeftControl)

0x29, 0xe7,      //   USAGE_MAXIMUM (Keyboard //                  Right GUI)

0x15, 0x00,      //   LOGICAL_MINIMUM (0)

0x25, 0x01,      //   LOGICAL_MAXIMUM (1)

0x75, 0x01,      //   REPORT_SIZE (1)

0x95, 0x08,      //   REPORT_COUNT (8)

0x81, 0x02,      //   INPUT (Data,Var,Abs)

0x95, 0x01,      //   REPORT_COUNT (1)

0x75, 0x08,      //   REPORT_SIZE (8)

0x25, 0x65,      //   LOGICAL_MAXIMUM (101)

0x19, 0x00,      //   USAGE_MINIMUM (Reserved //   (no event indicated))

0x29, 0x65,      //   USAGE_MAXIMUM //   (Keyboard Application)

0x81, 0x00,      //   INPUT (Data,Ary,Abs)

0xc0              //    END_COLLECTION

0x0105

0x0609

0x01A1

0x0705

0xE019 

0xE729

0x0015

0x0125

0x0175

0x05

0x0281

0x0875

0x0195

0x0181

0x0019

0x0105

0x0209

0x01A1

0x0109

0x00A1

0x0905

0x0119

0x0329

0x0015

0x0125

0x0175

0x0395

0x0281

0x0575

0x01953 

0x6529

0x0015

0x6525

0x0875

0x0695

0x0081

0x0805

0x0119

0x0529

0x0015

0x0125

0x0175

0x0595

0x0291

0x0375

0x0195

0x0191

0xC0

rom struct{byte report[HID_RPT01_SIZE];}hid_rpt01={

    0x05, 0x01,   /* Usage Page (Generic Desktop)             */

    0x09, 0x06,   /* Usage (Keyboard)                         */

    0xA1, 0x01, /* Collection (Application)                 */

    0x05, 0x07, /*      Usage page (Key Codes)              */

    0x19, 0xE0, /*      Usage minimum (224)                 */

    0x29, 0xE7, /*      Usage maximum (231)                 */

    0x15, 0x00, /*      Logical minimum (0)                 */

    0x25, 0x01, /*   Logical maximum (1)                 */

    0x75, 0x01, /*      Report size (1)                     */

    0x95, 0x08, /*      Report count (8)                    */

    0x81, 0x02, /*      Input (data, variable, absolute)    */

    0x95, 0x01, /*      Report count (1)                    */

    0x75, 0x08, /*      Report size (8)                     */

    0x81, 0x01, /*      Input (constant)                    */

    0x95, 0x06, /*      Report count (6)                    */

    0x75, 0x08, /*      Report size (8)                     */

    0x15, 0x00, /*      Logical minimum (0)                 */

    0x25, 0x65, /*      Logical maximum (101)               */

    0x05, 0x07, /*      Usage page (key codes)              */

    0x19, 0x00, /*      Usage minimum (0)                   */

    0x29, 0x65, /*      Usage maximum (101)                 */

    0x81, 0x00, /*      Input (data, array)                 */

    0xC0};        /* End Collection                           */

rom struct{byte report[HID_RPT02_SIZE];}hid_rpt02={

    0x05, 0x0c,                    // USAGE_PAGE (Consumer Devices)

    0x09, 0x01,                    // USAGE (Consumer Control)

0xa1, 0x01,                    // COLLECTION (Application)

0x85, 0x01,             //   REPORT_ID (1)

    0x15, 0x00,                    //   LOGICAL_MINIMUM (0)

    0x25, 0x01,                    //   LOGICAL_MAXIMUM (1)

0x75, 0x01,                    //   REPORT_SIZE (1)

0x95, 0x10,                    //   REPORT_COUNT (16)

0x09, 0xe2,                    //   USAGE (Mute) 0x01

   0x09, 0xe9,                    //   USAGE (Volume Up) 0x02

    0x09, 0xea,                    //   USAGE (Volume Down) 0x03

0x09, 0xcd,                    //   USAGE (Play/Pause) 0x04

0x09, 0xb7,                    //   USAGE (Stop) 0x05

    0x09, 0xb6,                    //  USAGE (Scan Previous Track) 0x06

    0x09, 0xb5,                    //   USAGE (Scan Next Track) 0x07

0x0a, 0x8a, 0x01,              //   USAGE (Mail) 0x08

0x0a, 0x92, 0x01,              //   USAGE (Calculator) 0x09

0x0a, 0x21, 0x02,              //   USAGE (www search) 0x0a

0x0a, 0x23, 0x02,              //   USAGE (www home) 0x0b

0x0a, 0x2a, 0x02,              //   USAGE (www favorites) 0x0c

    0x0a, 0x27, 0x02,              //   USAGE (www refresh) 0x0d0x0a, 0x26, 0x02,              //   USAGE (www stop) 0x0e

0x0a, 0x25, 0x02,              //   USAGE (www forward) 0x0f

0x0a, 0x24, 0x02,              //   USAGE (www back) 0x10

0x81, 0x62,                    //   INPUT (Data,Var,Abs,NPrf,Null)

    0xc0,

// System Control Descriptor

    0x05, 0x01,   /* Usage Page (Generic Desktop)              */

    0x09, 0x80,   /* Usage (System Control)                 */

    0xA1, 0x01, /* Collection (Application)                  */

    0x85, 0x02,  /* Report ID 0x02 [SYSTEM CTRL] */

    0x19, 0x82, /*      Usage minimum (System Sleep)            */

    0x29, 0x83, /*      Usage maximum (System Wake up)          */

    0x95, 0x02, /*      Report count (2)                     */

    0x81, 0x06, /*Input (data, variable, relative, Preferred)   */

    0x95, 0x06, /*      Report count (6)                     */

    0x81, 0x01, /*Input (Constant)     */

    0xC0  /*End Collection                                */

};    

//Hid Table for interface:0 alternate:0 Length:0x3F 

Descriptor_type_22_index_0_0_table:  

        DB    0x05,0x01

        DB    0x09,0x06

        DB    0xA1,0x01

        DB    0x05,0x07        ;

        DB    0x19,0xE0

        DB    0x29,0xE7

        DB    0x15,0x00

        DB    0x25,0x01        ;

        DB    0x75,0x01

        DB    0x95,0x08

        DB    0x81,0x02

        DB    0x95,0x01        ;

        DB    0x75,0x08

        DB    0x81,0x03

        DB    0x95,0x05

        DB    0x75,0x01        ;

        DB    0x05,0x08

        DB    0x19,0x01

        DB    0x29,0x05

        DB    0x91,0x02        ;

        DB    0x95,0x01

        DB    0x75,0x03

        DB    0x91,0x03

        DB    0x95,0x06        ;

        DB    0x75,0x08

        DB    0x15,0x00

        DB    0x25,0x65

        DB    0x05,0x07        ;

        DB    0x19,0x00

        DB    0x29,0x65

        DB    0x81,0x00

        DB    0xC0

        db  5h,  1h                ; USAGE_PAGE (Generic Desktop)

        db  9h,  6h                ; USAGE (Keyboard)

        db a1h,  1h                ; COLLECTION (Application)

        db  5h,  7h                ;   USAGE_PAGE (Keyboard)

        db 19h, e0h                ;   USAGE_MINIMUM (Keyboard LeftControl)

        db 29h, e7h                ;   USAGE_MAXIMUM (Keyboard Right GUI)

        db 15h,  0h                ;   LOGICAL_MINIMUM (0)

        db 25h,  1h                ;   LOGICAL_MAXIMUM (1)

        db 75h,  1h                ;   REPORT_SIZE (1)

        db 95h,  8h                ;   REPORT_COUNT (8)

        db 81h,  2h                ;   INPUT (Data,Var,Abs)

        db 95h,  1h                ;   REPORT_COUNT (1)

        db 75h,  8h                ;   REPORT_SIZE (8)

        db 81h,  3h                ;   INPUT (Cnst,Var,Abs)

        db 95h,  5h                ;   REPORT_COUNT (5)

        db 75h,  1h                ;   REPORT_SIZE (1)

        db  5h,  8h                ;   USAGE_PAGE (LEDs)

        db 19h,  1h                ;   USAGE_MINIMUM (Num Lock)

        db 29h,  5h                ;   USAGE_MAXIMUM (Kana)

        db 91h,  2h                ;   OUTPUT (Data,Var,Abs)

        db 95h,  1h                ;   REPORT_COUNT (1)

        db 75h,  3h                ;   REPORT_SIZE (3)

        db 91h,  3h                ;   OUTPUT (Cnst,Var,Abs)

        db 95h,  6h                ;   REPORT_COUNT (6)

        db 75h,  8h                ;   REPORT_SIZE (8)

        db 15h,  0h                ;   LOGICAL_MINIMUM (0)

        db 25h, 65h                ;   LOGICAL_MAXIMUM (101)

        db  5h,  7h                ;   USAGE_PAGE (Keyboard)

        db 19h,  0h                ;   USAGE_MINIMUM (Reserved (no event indicated))

        db 29h, 65h                ;   USAGE_MAXIMUM (Keyboard Application)

        db 81h,  0h                ;   INPUT (Data,Ary,Abs)

        db c0h                     ; END_COLLECTION

Usage Page and Usages for Audio Control

A device wanting to be to recognized as a HID audio control device must declare itself as being a Consumer Control device (usage 0x01), as defined in the Consumer Page (page 0x0C) in the Universal Serial Bus HID Usage Tables Version 1.0 specification. This means that its top-level application collection should be Usage Page (Consumer), Usage (Consumer Control). 

When such a device is enumerated by the operating system, the supporting software (HIDSERVE.EXE) is installed and loaded on the host system. Table 1 outlines the Consumer Page audio controls that are supported in Windows 2000.

Table 1.  Consumer Page audio controls supported in Windows 2000.

The Volume, Bass, and Treble usages (of type LC) should be deployed for controls that generate both increment and decrement data represented by a 2-bit value, whereas the associated Increment and Decrement usages (of type RTC) should be deployed for pairs of one-bit controls (traditional button controls). The hardware design and implementation determines what usage types are appropriate for the HID firmware implementation for a particular device.

It's also important to notice that any re-triggering of events should be done by software timers in the host system, and not by hardware timers in the device itself. For example, if the user keeps pressing the Volume Increment button, the device should only generate one input report with this state information. Host software will perform the actual re-triggering of events that will lead to continuous increments of the volume until the device generates another input report indicating that the button has been released or until the maximum volume has been reached.  

Key Codes For Scan Code Set 2: