Daydream Controller手柄数据的解析

参考:

How I hacked Google Daydream controller

How I hacked Google Daydream controller (Part IV)

反编译代码:

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private static UUID A = UUID.fromString("0000180f-0000-1000-8000-00805f9b34fb"); static final String a = bbr.class.getSimpleName(); public static final UUID d = UUID.fromString("00002902-0000-1000-8000-00805f9b34fb"); public static final UUID e = UUID.fromString("0000180a-0000-1000-8000-00805f9b34fb"); public static final UUID f = UUID.fromString("00002a29-0000-1000-8000-00805f9b34fb"); public static final UUID g = UUID.fromString("00002a24-0000-1000-8000-00805f9b34fb"); public static final UUID h = UUID.fromString("00002a25-0000-1000-8000-00805f9b34fb"); public static final UUID i = UUID.fromString("00002a26-0000-1000-8000-00805f9b34fb"); public static final UUID j = UUID.fromString("00002a28-0000-1000-8000-00805f9b34fb"); public static final UUID k = UUID.fromString("00002a27-0000-1000-8000-00805f9b34fb"); public static final UUID l = UUID.fromString("00002a19-0000-1000-8000-00805f9b34fb"); public static final UUID m = UUID.fromString("0000fef5-0000-1000-8000-00805f9b34fb"); public static final UUID n = UUID.fromString("0000fe55-0000-1000-8000-00805f9b34fb"); private final VrCoreApplication B; private BluetoothDevice C;   static final String A = bcj.class.getSimpleName(); private static UUID C = UUID.fromString("00000001-1000-1000-8000-00805f9b34fb"); private static UUID D = UUID.fromString("00000002-1000-1000-8000-00805f9b34fb");   if (C.equals(paramBluetoothGattCharacteristic.getUuid()))     {       localObject4 = paramBluetoothGattCharacteristic.getValue();       paramBluetoothGattCharacteristic = this.P;       if (localObject4 != null) {}       try       {         Object localObject1 = this.O;         if (localObject4.length < 19)         {           localObject1 = bbq.a;           i = localObject4.length;           localObject4 = new java/lang/StringBuilder;           ((StringBuilder)localObject4).<init>(46);           Log.e((String)localObject1, "Invalid number of bytes to decode: " + i);           i = 0;           if (i != 0) {             break label781;           }         }       }       finally {}     }   }   ((bbq)localObject2).b = ((byte[])localObject4);   ((bbq)localObject2).c = 0;   ((bbq)localObject2).d = ((bbq)localObject2).a(9, false);   ((bbq)localObject2).a(5, false);   int i5 = ((bbq)localObject2).a(13, true);   int i = ((bbq)localObject2).a(13, true);   int i7 = ((bbq)localObject2).a(13, true);   int i4 = ((bbq)localObject2).a(13, true);   int i1 = ((bbq)localObject2).a(13, true);   int n = ((bbq)localObject2).a(13, true);   int j = ((bbq)localObject2).a(13, true);   int m = ((bbq)localObject2).a(13, true);   int i2 = ((bbq)localObject2).a(13, true);   int k = ((bbq)localObject2).a(8, false);   int i3 = ((bbq)localObject2).a(8, false);   int i6 = ((bbq)localObject2).a(5, false);   ((bbq)localObject2).s[0] = bbq.a(i5);   ((bbq)localObject2).s[1] = bbq.a(i);   ((bbq)localObject2).s[2] = bbq.a(i7);   float[] arrayOfFloat = ((bbq)localObject2).s;   Object localObject4 = ((bbq)localObject2).t;   float f2 = arrayOfFloat[0];   float f3 = arrayOfFloat[1];   float f1 = arrayOfFloat[2];   float f4 = f2 * f2 + f3 * f3 + f1 * f1;

数据帧定义:

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Daydream Controller数据帧格式，按照bit位定义如下， bit000~bit008：时间戳(0~511) bit009~bit013：包号(0~31) bit014~bit026：地磁 X      bit027~bit039：地磁 Y     bit040~bit052：地磁 Z bit053~bit065：ACC X      bit066~bit078：ACC Y     bit079~bit091：ACC Z bit092~bit104：Gyro X     bit105~bit117：Gyro Y    bit118~bit130：Gyro Z bit131~bit138：Touch X    bit139~bit146：Touch Y bit147：Click bit148：Home bit149：App bit150：Volume - bit151：Volume +

原始数据:

　　 

解析结果：

      

Connection Interval:

                  

硬件及软件信息：

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MCU：Dialog DA14681

Touch: IQS525

Battery: Coslight CA491539P(218-mAh)

 

LMP Version: Bluetooth Core Specification 4.1

Service: 0000fe55-0000-1000-8000-00805f9b34fb

Characteristic：00000001-1000-1000-8000-00805f9b34fb

Characteristic property：Notification

相关资源：

SmartBond™ DA14681

Daydream controller : Comprehensive guide

如何评价 Google IO 2016 发布的 VR Daydream 及其遥控器的交互