藍牙HID

(1)Bluetooth HID devices支持：

          Input(从发数据给主), Output（主发数据给从）,  Feature（双向传输）。

(2)HID建立Control Channel和Interrupt Channel两个通道，

        report可以在这两条channel上传输，

                在Control channel上传输的report称为synchronous reports   同步                                                    在Interrupt channel上传输的report称为asynchronous reports   异步

(3)Feature 同步传输经常会使用  GET_REPORT或者SET_REPORT requests。

(4)Mode 模型分为：

        Report Protocol Mode（报告模型）和Boot Protocol Mode（启动模型）。

        主设备至少支持一种，从设备则需要支持Report Protocol   Mode，并且Report Protocol Mode是Bluetooth HID Device的默认Mode。 

（5）消息的⼤⼩不能超过L2CAP蓝⽛逻辑链路控制和适配协议的MTU
（6）BLE HID服务UUID为0x1812（标准规范），数据存放在报告中，通过下⾯的各个特征 characteristic 来收发 HID 的报告数据。

 

2.1 notify介绍
  如果设备主动给手机发信息，则可以通过notification的方式，这种方式不用手机去轮询地读设备上的数据。notify的应用场景就是数据的实时上传。

2.2 notify实现
  实现notify需要的api函数是gatt_notification，使用方法
 

                // send notificationlastNoti.handle = pRpt->handle;lastNoti.len = len;osal_memcpy(lastNoti.value, pData, len);GATT_Notification( gapConnHandle, &lastNoti, FALSE );

"feff": "GN Netcom","fefe": "GN ReSound A/S","fefd": "Gimbal, Inc.","fefc": "Gimbal, Inc.","fefb": "Stollmann E+V GmbH","fefa": "PayPal, Inc.","fef9": "PayPal, Inc.","fef8": "Aplix Corporation","fef7": "Aplix Corporation","fef6": "Wicentric, Inc.","fef5": "Dialog Semiconductor GmbH","fef4": "Google","fef3": "Google","fef2": "CSR","fef1": "CSR","fef0": "Intel","feef": "Polar Electro Oy","feee": "Polar Electro Oy","feed": "Tile, Inc.","feec": "Tile, Inc.","feeb": "Swirl Networks, Inc.","feea": "Swirl Networks, Inc.","fee9": "Quintic Corp.","fee8": "Quintic Corp.","fee7": "Tencent Holdings Limited","fee6": "Seed Labs, Inc.","fee5": "Nordic Semiconductor ASA","fee4": "Nordic Semiconductor ASA","fee3": "Anki, Inc.","fee2": "Anki, Inc.","fee1": "Anhui Huami Information Technology Co.","fee0": "Anhui Huami Information Technology Co.","fedf": "Design SHIFT","fede": "Coin, Inc.","fedd": "Jawbone","fedc": "Jawbone","fedb": "Perka, Inc.","feda": "ISSC Technologies Corporation","fed9": "Pebble Technology Corporation","fed8": "Google","fed7": "Broadcom Corporation","fed6": "Broadcom Corporation","fed5": "Plantronics Inc.","fed4": "Apple, Inc.","fed3": "Apple, Inc.","fed2": "Apple, Inc.","fed1": "Apple, Inc.","fed0": "Apple, Inc.","fecf": "Apple, Inc.","fece": "Apple, Inc.","fecd": "Apple, Inc.","fecc": "Apple, Inc.","fecb": "Apple, Inc.","feca": "Apple, Inc.","fec9": "Apple, Inc.","fec8": "Apple, Inc.","fec7": "Apple, Inc.","fec6": "Kocomojo, LLC","fec5": "Realtek Semiconductor Corp.","fec4": "PLUS Location Systems","fec3": "360fly, Inc.","fec2": "Blue Spark Technologies, Inc.","fec1": "KDDI Corporation","fec0": "KDDI Corporation","febf": "Nod, Inc.","febe": "Bose Corporation","febd": "Clover Network, Inc.","febc": "Dexcom, Inc.","febb": "adafruit industries","feba": "Tencent Holdings Limited","feb9": "LG Electronics","feb8": "Facebook, Inc.","feb7": "Facebook, Inc.","feb6": "Vencer Co, Ltd","feb5": "WiSilica Inc.","feb4": "WiSilica Inc.","feb3": "Taobao","feb2": "Microsoft Corporation","feb1": "Electronics Tomorrow Limited","feb0": "Nest Labs Inc.","feaf": "Nest Labs Inc.","feae": "Nokia Corporation","fead": "Nokia Corporation","feac": "Nokia Corporation","feab": "Nokia Corporation","feaa": "Google","fea9": "Savant Systems LLC","fea8": "Savant Systems LLC","fea7": "UTC Fire and Security","fea6": "GoPro, Inc.","fea5": "GoPro, Inc.","fea4": "Paxton Access Ltd","fea3": "ITT Industries","fea2": "Intrepid Control Systems, Inc.","fea1": "Intrepid Control Systems, Inc.","fea0": "Google","fe9f": "Google","fe9e": "Dialog Semiconductor B.V.","fe9d": "Mobiquity Networks Inc","fe9c": "GSI Laboratories, Inc.","fe9b": "Samsara Networks, Inc","fe9a": "Estimote","fe99": "Currant, Inc.","fe98": "Currant, Inc.","fe97": "Tesla Motor Inc.","fe96": "Tesla Motor Inc.","fe95": "Xiaomi Inc.","fe94": "OttoQ Inc.","fe93": "OttoQ Inc.","fe92": "Jarden Safety & Security","fe91": "Shanghai Imilab Technology Co.,Ltd","fe90": "JUMA","fe8f": "CSR","fe8e": "ARM Ltd","fe8d": "Interaxon Inc.","fe8c": "TRON Forum","fe8b": "Apple, Inc.","fe8a": "Apple, Inc.","fe89": "B&O Play A/S","fe88": "SALTO SYSTEMS S.L.","fe87": "Qingdao Yeelink Information Technology Co., Ltd. ","fe86": "HUAWEI Technologies Co., Ltd. ","fe85": "RF Digital Corp","fe84": "RF Digital Corp","fe83": "Blue Bite","fe82": "Medtronic Inc.","fe81": "Medtronic Inc.","fe80": "Doppler Lab","fe7f": "Doppler Lab","fe7e": "Awear Solutions Ltd","fe7d": "Aterica Health Inc.","fe7c": "Stollmann E+V GmbH","fe7b": "Orion Labs, Inc.","fffe": "Alliance for Wireless Power (A4WP)","fffd": "Fast IDentity Online Alliance (FIDO)"

USB HID 设备类协议入门-百合电子工作室

如何成为一个HID设备（模拟键盘） - 莫回头 - 博客园