蓝牙 HID class descriptor 分析

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一.MOUSE

0x05,0x01, /*USAGE_PAGE (Generic Desktop)*/0x09,0x02, /*USAGE (Mouse)*/0xa1,0x01, /*COLLECTION (Application)*/0x09,0x01, /*USAGE (Pointer)*/0xa1,0x00, /*COLLECTION (Physical)*/0x85,0x02,  /*report ID */0x05,0x09,  /*USAGE_PAGE (Button)*/0x19,0x01,  /*USAGE_MINIMUM (Button 1)*/0x29,0x03,  /*USAGE_MAXIMUM (Button 3)*/0x15,0x00,  /*LOGICAL_MINIMUM (0)*/0x25,0x01,  /*LOGICAL_MAXIMUM (1)*/0x95,0x03,  /*REPORT_COUNT (3)*/0x75,0x01,  /*REPORT_SIZE (1)*/0x81,0x02,  /*INPUT (Data,Var,Abs)*/0x95,0x01,  /*REPORT_COUNT (1)*/0x75,0x05,  /*REPORT_SIZE (5)*/0x81,0x03,  /*INPUT (Cnst,Var,Abs)*/0x05,0x01,  /*USAGE_PAGE (Generic Desktop)*/0x09,0x30,  /*USAGE (X)*/0x09,0x31,  /*USAGE (Y)*/0x16,0x01,0x80, /*LOGICAL_MINIMUM (-32767)*/0x26,0xFF,0x7F, /*LOGICAL_MAXIMUM (32767)*/0x75,0x10,  /*REPORT_SIZE (16)*/0x95,0x02,  /*REPORT_COUNT (2)*/0x81,0x06,  /*INPUT (Data,Var,Rel)*/

根据以上判断，发送的data应该是6个byte， 1byte ID+ 1byte(3bit button + 5bit input) + 2byte X + 2byte Y

data[0] = 0x2; 必须

data[1] = 0x1; 为鼠标左键按下

data[2] data[3] 代表X的变化

data[4] data[5] 代表Y的变化

二.CONSUMER

0x05, 0x0C, // USAGE_PAGE (Consumer) 0x09, 0x01, // USAGE (Consumer Control)0xA1, 0x01, // COLLECTION (Application)0x85, 0x03, // Report ID 030x15, 0x00, // LOGICAL_MINIMUM (0)0x25, 0x01, // LOGICAL_MAXIMUM (1)0x75, 0x01, // REPORT_SIZE (1)0x95, 0x18, // REPORT_COUNT (24)0x0A, 0x40, 0x00, // USAGE (menu):0x400x0A, 0x92, 0x01, // USAGE (AL Calculator):0x1920x0A, 0x83, 0x01, // USAGE (AL Consumer Control Configuration):0x1830x0A, 0x23, 0x02, // USAGE (AC Home):0x2230x0A, 0x8A, 0x01, // USAGE (AL Email Reader):0x18A0x0A, 0x82, 0x01, // USAGE (AL Programmable Button Configuration):0x1820x0A, 0x21, 0x02, // USAGE (AC Search):0x2210x0A, 0x24, 0x02, // USAGE (AC Back):0x2240x0A, 0x25, 0x02, // USAGE (AC Forward):0x2250x0A, 0x26, 0x02, // USAGE (AC Stop):0x2260x0A, 0x27, 0x02, // USAGE (AC Refresh):0x2270x09, 0xB6,  // USAGE (Scan Previous Track)0x09, 0xB5,  // USAGE (Scan Next Track)0x09, 0xB7,  // USAGE (Stop)0x09, 0xCD,  // USAGE (Play Pause)0x09, 0xE9,  // USAGE (Volume Increment)0x09, 0xEA,  // USAGE (Volume Decrement)0x09, 0xE2,  // USAGE (Mute)0x09, 0xB8,  // USAGE (Eject)0x09, 0x30,  // USAGE (Power)0x0A, 0xB1, 0x01, // USAGE (AL Screen Saver):0x1B10x81, 0x02,  // INPUT (Data,Var,Abs)0x95, 0x01,  // REPORT_COUNT (1)0x75, 0x03,  // REPORT_SIZE (3)0x81, 0x03,  // INPUT (Cnst,Var,Abs)0xC0,  // END_COLLECTION

根据以上判断，发送的data应该是4个byte， 1byte ID+ 3byte的consumer

如果想发送menu 的HID

data[0] = 0x3;

data[1] = 0x1;

data[2] = 0x0;

data[3] = 0x0;

如果想发送return / back 的HID

data[0] = 0x3;

data[1] = 0x80;

data[2] = 0x0;

data[3] = 0x0;

可以定制自己想要的任何按键

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