一、前言
本尊自詡爲IOT小能手，一直沒涉足藍牙實在說不過去。剛好上個月底的時候計劃做個BLE設備，這陣子利用業餘時間自學了BLE協議棧，瞭解了GATT，磕磕絆絆完成CC254x(cc2540/cc2541)的微信AirSync。就在今晚，聽着Coldplay的“Be my mirror, my sword and shield”雄心萬丈，大千世界和AirSync都被我征服，終於完成了最後一步的測試。
轉載請註明：http://blog.csdn.net/sadshen
二、常見問題及措施
我把自己遇到的幾個問題及解決方案都記錄在這邊，應該會讓一些朋友少走一些彎路。
1. 廣播包中沒有 manufacture specific data 字段，或不以MAC地址結尾。
措施：廣播包中必須帶上0xFF的廠商自定義字段，09+ FF + 廠商ID(2 Bytes) + MAC(6 Bytes)。
2. Mac address 校驗失敗！
這是我之前調試的錯誤提示：
***** onTestIsValidAuthReqPack *****
result = false, is an invalid auth request pack: AuthRequestPack: FE 01 00 32 27 11 00 01 0A 00 18 84 80 04 20 01 28 02 3A 06 57 65 43 68 61 74 62 16 57 65 43 68 61 74 42 6C 75 65 74 6F 6F 74 68 44 65 76 69 63 65 00
has BaseRequest
no Md5DeviceTypeAndDeviceId field!
has MacAddress field, Mac Address = 57 65 43 68 61 74
MacAddress BitLength = 48bit
Mac Address from broadcast record = 90:59:AF:0E:62:88
Mac address 校驗失敗！
has ProtoVersion field, ProtoVersion = 65540
has AuthProto field, AuthProto = 1
has AuthMethod field, AuthMethod = EAM_macNoEncrypt
no AesSign field!
has DeviceName field, DeviceName = WeChatBluetoothDevice
措施：在AUTH REQ中也有Mac字段，需要保證MAC地址和廣播包中的一樣。
3. Read Characteristic is not read able!
4. Can not Start Indicate permision:Can not get configure descriptor
措施：這兩個處理，要保證Read Characteristic有可讀權限，然後Read Char的值必須爲MAC地址。
5. async write data error
措施：這個問題很多，但是解決思路都固定，就是在https://developer.android.com/reference/android/bluetooth/BluetoothGatt.html#GATT_FAILURE
找錯誤碼。
我的錯誤碼是03，說是手機沒有寫權限。
public static final int GATT_WRITE_NOT_PERMITTED
Added in API level 18 GATT write operation is not permitted
Constant Value: 3 (0x00000003)
後來一查，果然我的Write CHAR沒有write權限。
三、AirSync的完整日誌
這邊把完整的LOG日誌提供出來,希望對其他調試AirSync的朋友有所幫助。
2015年8月18日星期二 中國標準時間下午9:42:07
*****************BLE： TwoWinter******************
***** onTestBroadcastRecord *****
result = true, Has 0xfee7 or standard service in broadcast record
廣播包：02 01 06 03 02 E7 FE 09 FF 0D 00 90 59 AF 0E 62 88 0A 09 54 77 6F 57 69 6E 74 65 72 05 12 50 00 20 03 02 0A 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
***** onTestManufatureData *****
resut= true, 廣播包中 manufacture specific data 字段中MAC地址校驗成功.
***** onDiscoverService *****
result = true, DiscoverService success
Discovered Services
ServiceUUID: 00001800-0000-1000-8000-00805f9b34fb
ServiceUUID: 00001801-0000-1000-8000-00805f9b34fb
ServiceUUID: 0000180a-0000-1000-8000-00805f9b34fb
ServiceUUID: 0000fee7-0000-1000-8000-00805f9b34fb
***** onTestHasWeChatService *****
result = true, has WeChatService or standard service
***** onTestHasIndicateCharacteristic *****
result = true, has WeChat Indicate Characteristic
***** onTestHasWriteCharacteristic *****
result = true, has Wechat Write Characteristic
***** onTestHasReadCharacteristic *****
result = true, Has WeChat read characteristic
***** onTestWriteCharacteristicPermisson *****
result = true, has Write permission
***** onTestIndicateCharacteristicPermisson *****
result = true, has Indication permission
***** onTestReadCharacteristicPermisson *****
result = true, Read Characteristic is read able
***** onTestStartIndicating *****
result = true, can Start Indicate
***** onConnected *****
result = true, connected
------onDataReceived------
data length = 20
data dump = FE 01 00 24 27 11 00 01 0A 00 18 84 80 04 20 01 28 02 3A 06
data receive seq = 0
------onDataReceived------
data length = 16
data dump = 90 59 AF 0E 62 88 62 08 6D 79 64 65 76 69 63 65
data receive seq = 1
***** onTestRecvAuthReqtWhenStartedIndicating *****
result = true, received auth request pack
***** onTestIsValidAuthReqPack *****
result = true, is a valid auth request pack
AuthRequestPack: FE 01 00 24 27 11 00 01 0A 00 18 84 80 04 20 01 28 02 3A 06 90 59 AF 0E 62 88 62 08 6D 79 64 65 76 69 63 65
has BaseRequest
no Md5DeviceTypeAndDeviceId field!
has MacAddress field, Mac Address = 90 59 AF 0E 62 88
MacAddress BitLength = 48bit
Mac Address from broadcast record = 90:59:AF:0E:62:88
Mac address checkout success
has ProtoVersion field, ProtoVersion = 65540
has AuthProto field, AuthProto = 1
has AuthMethod field, AuthMethod = EAM_macNoEncrypt
no AesSign field!
has DeviceName field, DeviceName = mydevice
**** send auth response ****
data len = 14
data dump = FE 01 00 0E 4E 21 00 01 0A 02 08 00 12 00
------onDataReceived------
data length = 16
data dump = FE 01 00 10 27 13 00 02 0A 00 1A 04 11 22 33 44
data receive seq = 2
***** onTestRecvInitReqPack *****
result = true, received init request pack
***** onTestIsValidInitReqPack *****
result = true, valid init request pack: has BaseRequest
has Challenge field, Challenge = 11 22 33 44
**** send init request response ****
data len = 25
data dump = FE 01 00 19 4E 23 00 02 0A 02 08 00 10 B4 24 18 F8 AC 01 20 D1 BB CA BF 07
------onDataReceived------
data length = 20
data dump = FE 01 00 18 27 12 00 03 0A 00 12 0C FE CF 00 01 00 12 00 01
data receive seq = 3
------onDataReceived------
data length = 4
data dump = 00 03 00 00
data receive seq = 4
*** receive SendDataRequest ****
date type = manufactureSvr data
data len = 16
data dump = 0A 00 12 0C FE CF 00 01 00 12 00 01 00 03 00 00
**** send SendData Response(echo request) ****
data len = 30
data dump = FE 01 00 1E 4E 22 00 03 0A 02 08 00 12 10 0A 00 12 0C FE CF 00 01 00 12 00 01 00 03 00 00
***** onTestIsValidSendDataRequest *****
result = true, is a valid SendDataRequest pack: has BaseRequest field
has Data field, data = FE CF 00 01 00 12 00 01 00 03 00 00
no Type field, use default manufactureSvr data type
**** send ManufactureSvr Push ****
data len = 22
data dump = FE 01 00 16 75 31 00 00 0A 00 12 08 31 32 33 34 35 36 37 38 18 00
**** send Html Push ****
data len = 23
data dump = FE 01 00 17 75 31 00 00 0A 00 12 08 31 32 33 34 35 36 37 38 18 91 4E
**** send wxWristBand Push ****
data len = 14
data dump = FE 01 00 0E 75 31 00 00 0A 00 12 00 18 01
**** send EnterDeviceChatView Push ****
data len = 14
data dump = FE 01 00 0E 75 32 00 00 0A 00 10 01 18 01
**** send Exit ChatView Push ****
data len = 14
data dump = FE 01 00 0E 75 32 00 00 0A 00 10 02 18 01
**** send Enter HtmlChatView Push ****
data len = 14
data dump = FE 01 00 0E 75 32 00 00 0A 00 10 01 18 02
**** send Exit HtmlChatView Push ****
data len = 14
data dump = FE 01 00 0E 75 32 00 00 0A 00 10 02 18 02
**** send enterBackground Push ****
data len = 12
data dump = FE 01 00 0C 75 33 00 00 0A 00 10 01
**** send enterForground Push ****
data len = 12
data dump = FE 01 00 0C 75 33 00 00 0A 00 10 02
**** send enterSleep Push ****
data len = 12
data dump = FE 01 00 0C 75 33 00 00 0A 00 10 03
*****Disconnected Device*****
