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Android Bluetooth
Android 4.4上蓝牙协议栈采用的是BRCM和Google共同开发的bluedroid，代替了之前的Bluez.
一、 Bluetooth 源码分布 （基于Android 4.4 ）
1. packages/apps/Settings/src/com/android/settings/bluetooth
bluetooth Settings 代码
2. packages/apps/Bluetooth
BT 应用层代码，及BT profile（如：A2dp,gatt,hdp,hfp,hid,map,opp,pan,pbap ...） 上层代码
packages/apps/Bluetooth/jni
3. frameworks/base/core/java/android/bluetooth
framework 层相关 java 代码与aidl
4. external/bluetooth/bluedroid
BRCM和Google共同开发的官方蓝牙协议栈
5. linux/kernel/drivers/bluetooth
6. linux/kernel/net/bluetooth
7. 以下是近期项目intel 平台
hardware/broadcom/libbt
hardware/libhardware
vendor/intel/fw/PRIVATE/bt 厂商bt固件
二、Bluetooth 常用类及相关profile
A2dp: Advanced Audio Distribution Profile 蓝牙音频传输模型协定
蓝牙立体声，和蓝牙耳机听歌有关那些，另还有个AVRCP--(Audio/Video Remote Control Profile)音频/视频远程控制配置文件，是用来听歌时暂停，上下歌曲选择的
GATT: Generic Attribute Profile 通用属性配置文件
GATT是基于ATT Protocol的，ATT针对BLE设备做了专门的优化，具体就是在传输过程中使用尽量少的数据。每个属性都有一个唯一的UUID，属性将以characteristics and services的形式传输
https://developer.bluetooth.org/TechnologyOverview/Pages/GATT.aspx
HDP：Bluetooth Health Device Profile 蓝牙关于医疗方面的应用
HFP : Hands-free Profile 和电话相关，蓝牙接听、挂断电话
HID : Human Interface Device
定义了蓝牙在人机接口设备中的协议、特征和使用规程。典型的应用包括蓝牙鼠标、蓝牙键盘、蓝牙游戏手柄等。该协议改编自USB HID Protocol
MAP : Message Access Profile
OPP : Object Push Profile
PAN : Personal Area Network Profile
描述了两个或更多个 Bluetooth 设备如何构成一个即时网络，和网络有关的还有串行端口功能(SPP)，拨号网络功能(DUN)
PBAP: Phonebook Access Profile 电话号码簿访问协议
三、Enable Bluetooth
1. 服务启动：
frameworks/base/services/java/com/android/server/SystemServer.java
系统启动时在SystemServer中注册蓝牙服务管理BluetoothManagerService服务：
view source print ?
01.
1 // Skip Bluetooth if we have an emulator kernel
02.
2 // TODO: Use a more reliable check to see if this product should
03.
3 // support Bluetooth - see bug 988521
04.
4 if (SystemProperties.get('ro.kernel.qemu').equals('1')) {
05.
5 Slog.i(TAG, 'No Bluetooh Service (emulator)');
06.
6 } else if (factoryTest == SystemServer.FACTORY_TEST_LOW_LEVEL) {
07.
7 Slog.i(TAG, 'No Bluetooth Service (factory test)');
08.
8 } else if (!context.getPackageManager().hasSystemFeature
09.
9 (PackageManager.FEATURE_BLUETOOTH)) {
10.
10 Slog.i(TAG, 'No Bluetooth Service (Bluetooth Hardware Not Present)');
11.
11 } else if (disableBluetooth) {
12.
12 Slog.i(TAG, 'Bluetooth Service disabled by config');
13.
13 } else {
14.
14 Slog.i(TAG, 'Bluetooth Manager Service');
15.
15 bluetooth = new BluetoothManagerService(context);
16.
16 ServiceManager.addService(BluetoothAdapter.BLUETOOTH_MANAGER_SERVICE, bluetooth);
17.
17 }
Bt 服务
其它进程通过binder机制调用该服务，该服务属于综合服务管理类，包括AdapterService的启动、蓝牙适配器Adapter的管理等。
2. BluetoothAdapter
Android的蓝牙Enable是由BluetoothAdapter提供的。只需要调用BluetoothAdapter.enable()即可启动蓝牙。下面我就分析这一个过程
frameworks/base/core/java/android/bluetooth/BluetoothAdapter.java
view source print ?
01.
1 /**
02.
2 * Turn on the local Bluetooth adapter—do not use without explicit
03.
3 * user action to turn on Bluetooth.
04.
4 * <p>This powers on the underlying Bluetooth hardware, and starts all
05.
5 * Bluetooth system services.
06.
6 * <p class='caution'><strong>Bluetooth should never be enabled without
07.
7 * direct user consent</strong>. If you want to turn on Bluetooth in order
08.
8 * to create a wireless connection, you should use the {@link
09.
9 * #ACTION_REQUEST_ENABLE} Intent, which will raise a dialog that requests
10.
10 * user permission to turn on Bluetooth. The {@link #enable()} method is
11.
11 * provided only for applications that include a user interface for changing
12.
12 * system settings, such as a 'power manager' app.</p>
13.
13 * <p>This is an asynchronous call: it will return immediately, and
14.
14 * clients should listen for {@link #ACTION_STATE_CHANGED}
15.
15 * to be notified of subsequent adapter state changes. If this call returns
16.
16 * true, then the adapter state will immediately transition from {@link
17.
17 * #STATE_OFF} to {@link #STATE_TURNING_ON}, and some time
18.
18 * later transition to either {@link #STATE_OFF} or {@link
19.
19 * #STATE_ON}. If this call returns false then there was an
20.
20 * immediate problem that will prevent the adapter from being turned on -
21.
21 * such as Airplane mode, or the adapter is already turned on.
22.
22 * <p>Requires the {@link android.Manifest.permission#BLUETOOTH_ADMIN}
23.
23 * permission
24.
24 *
25.
25 * @return true to indicate adapter startup has begun, or false on
26.
26 * immediate error
27.
27 */
28.
28 public boolean enable() {
29.
29 if (isEnabled() == true){
30.
30 if (DBG) Log.d(TAG, 'enable(): BT is already enabled..!');
31.
31 return true;
32.
32 }
33.
33 try {
34.
34 return mManagerService.enable(); //
35.
35 } catch (RemoteException e) {Log.e(TAG, '', e);}
36.
36 return false;
37.
37 }
mManagerService.enable()
mManagerService其实就是bluetoothAdapter的一个proxy,
view source print ?
01.
1 /**
02.
2 * Get a handle to the default local Bluetooth adapter.
03.
3 * <p>Currently Android only supports one Bluetooth adapter, but the API
04.
4 * could be extended to support more. This will always return the default
05.
5 * adapter.
06.
6 * @return the default local adapter, or null if Bluetooth is not supported
07.
7 * on this hardware platform
08.
8 */
09.
9 public static synchronized BluetoothAdapter getDefaultAdapter() {
10.
10 if (sAdapter == null) {
11.
11 IBinder b = ServiceManager.getService(BLUETOOTH_MANAGER_SERVICE);
12.
12 if (b != null) {
13.
13 IBluetoothManager managerService = IBluetoothManager.Stub.asInterface(b);
14.
14 sAdapter = new BluetoothAdapter(managerService);
15.
15 } else {
16.
16 Log.e(TAG, 'Bluetooth binder is null');
17.
17 }
18.
18 }
19.
19 return sAdapter;
20.
20 }
getDefaultAdapter
view source print ?
01.
1 /**
02.
2 * Use {@link #getDefaultAdapter} to get the BluetoothAdapter instance.
03.
3 */
04.
4 BluetoothAdapter(IBluetoothManager managerService) {
05.
5
06.
6 if (managerService == null) {
07.
7 throw new IllegalArgumentException('bluetooth manager service is null');
08.
8 }
09.
9 try {
10.
10 mService = managerService.registerAdapter(mManagerCallback);
11.
11 } catch (RemoteException e) {Log.e(TAG, '', e);}
12.
12 mManagerService = managerService;
13.
13 mLeScanClients = new HashMap<LeScanCallback, GattCallbackWrapper>();
14.
14 }
BluetoothAdapter
3. BluetoothManagerService
frameworks/base/services/java/com/android/server/BluetoothManagerService.java
view source print ?
01.
1 public boolean enable() {
02.
2 if ((Binder.getCallingUid() != Process.SYSTEM_UID) &&
03.
3 (!checkIfCallerIsForegroundUser())) {
04.
4 Log.w(TAG,'enable(): not allowed for non-active and non system user');
05.
5 return false;
06.
6 }
07.
7
08.
8 mContext.enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
09.
9 'Need BLUETOOTH ADMIN permission');
10.
10 if (DBG) {
11.
11 Log.d(TAG,'enable(): mBluetooth =' + mBluetooth +
12.
12 ' mBinding = ' + mBinding);
13.
13 }
14.
14
15.
15 synchronized(mReceiver) {
16.
16 mQuietEnableExternal = false;
17.
17 mEnableExternal = true;
18.
18 // waive WRITE_SECURE_SETTINGS permission check
19.
19 long callingIdentity = Binder.clearCallingIdentity();
20.
20 persistBluetoothSetting(BLUETOOTH_ON_BLUETOOTH);
21.
21 Binder.restoreCallingIdentity(callingIdentity);
22.
22 sendEnableMsg(false);
23.
23 }
24.
24 return true;
25.
25 }
BluetoothManagerService:enable()
view source print ?
1.
1 private void sendEnableMsg(boolean quietMode) {
2.
2 mHandler.sendMessage(mHandler.obtainMessage(MESSAGE_ENABLE,
3.
3 quietMode ? 1 : 0, 0));
4.
4 }
sendEnableMsg
sendEnableMsg 交给handleMessage 处理，可以看到case MESSAGE_ENABLE: 里调用了handleEnable
view source print ?
01.
1 private void handleEnable(boolean quietMode) {
02.
2 mQuietEnable = quietMode;
03.
3
04.
4 synchronized(mConnection) {
05.
5 if ((mBluetooth == null) && (!mBinding)) {
06.
6 //Start bind timeout and bind
07.
7 Message timeoutMsg=mHandler.obtainMessage(MESSAGE_TIMEOUT_BIND);
08.
8 mHandler.sendMessageDelayed(timeoutMsg,TIMEOUT_BIND_MS);
09.
9 mConnection.setGetNameAddressOnly(false);
10.
10 Intent i = new Intent(IBluetooth.class.getName());
11.
11 if (!doBind(i, mConnection,Context.BIND_AUTO_CREATE, UserHandle.CURRENT)) {
12.
12 mHandler.removeMessages(MESSAGE_TIMEOUT_BIND);
13.
13 } else {
14.
14 mBinding = true;
15.
15 }
16.
16 } else if (mBluetooth != null) {
17.
17 if (mConnection.isGetNameAddressOnly()) {
18.
18 // if GetNameAddressOnly is set, we can clear this flag,
19.
19 // so the service won't be unbind
20.
20 // after name and address are saved
21.
21 mConnection.setGetNameAddressOnly(false);
22.
22 //Register callback object
23.
23 try {
24.
24 mBluetooth.registerCallback(mBluetoothCallback);
25.
25 } catch (RemoteException re) {
26.
26 Log.e(TAG, 'Unable to register BluetoothCallback',re);
27.
27 }
28.
28 //Inform BluetoothAdapter instances that service is up
29.
29 sendBluetoothServiceUpCallback();
30.
30 }
31.
31
32.
32 //Enable bluetooth
33.
33 try {
34.
34 if (!mQuietEnable) {
35.
35 if(!mBluetooth.enable()) {
36.
36 Log.e(TAG,'IBluetooth.enable() returned false');
37.
37 }
38.
38 }
39.
39 else {
40.
40 if(!mBluetooth.enableNoAutoConnect()) {
41.
41 Log.e(TAG,'IBluetooth.enableNoAutoConnect() returned false');
42.
42 }
43.
43 }
44.
44 } catch (RemoteException e) {
45.
45 Log.e(TAG,'Unable to call enable()',e);
46.
46 }
47.
47 }
48.
48
49.
49 // Inform AudioRouteManager that bluetooth is enabled
50.
50 mAudioManager.setParameters(AUDIO_PARAMETER_KEY_BLUETOOTH_STATE + '=true');
51.
51 }
52.
52 }
handleEnable
可以看到是调用了mBluetooth.enable()
4. AdapterService，AdapterState
packages/app/Bluetooth/src/com/android/bluetooth/btservice/AdapterService.java
view source print ?
01.
1 public synchronized boolean enable(boolean quietMode) {
02.
2 enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM,
03.
3 'Need BLUETOOTH ADMIN permission');
04.
4 if (DBG)debugLog('Enable called with quiet mode status = ' + mQuietmode);
05.
5 mQuietmode = quietMode;
06.
6 Message m =
07.
7 mAdapterStateMachine.obtainMessage(AdapterState.USER_TURN_ON);
08.
8 mAdapterStateMachine.sendMessage(m);
09.
9 return true;
10.
10 }
AdapterService:enable()
此处用了用了StateMachine，它会在AdapterState 里processMessage 处理（StateMachine就是状态机，在不同的状态下，收到相同的Event，做不同的事情），直接搜索UER_TURN_ON 可以看到下面：
view source print ?
01.
1 private class OffState extends State {
02.
2 @Override
03.
3 public void enter() {
04.
4 infoLog('Entering OffState');
05.
5 }
06.
6
07.
7 @Override
08.
8 public boolean processMessage(Message msg) {
09.
9 AdapterService adapterService = mAdapterService;
10.
10 if (adapterService == null) {
11.
11 Log.e(TAG,'receive message at OffState after cleanup:' +
12.
12 msg.what);
13.
13 return false;
14.
14 }
15.
15 switch(msg.what) {
16.
16 case USER_TURN_ON:
17.
17 if (DBG) Log.d(TAG,'CURRENT_STATE=OFF, MESSAGE = USER_TURN_ON');
18.
18 sendCrashToolInfo('ON');
19.
19 notifyAdapterStateChange(BluetoothAdapter.STATE_TURNING_ON);
20.
20 mPendingCommandState.setTurningOn(true);
21.
21 transitionTo(mPendingCommandState);
22.
22 sendMessageDelayed(START_TIMEOUT, START_TIMEOUT_DELAY);
23.
23 adapterService.processStart();
24.
24 break;
25.
25 case USER_TURN_OFF:
26.
26 if (DBG) Log.d(TAG,'CURRENT_STATE=OFF, MESSAGE = USER_TURN_OFF');
27.
27 sendCrashToolInfo('OFF');
28.
28 //TODO: Handle case of service started and stopped without enable
29.
29 break;
30.
30 default:
31.
31 if (DBG) Log.d(TAG,'ERROR: UNEXPECTED MESSAGE: CURRENT_STATE=OFF, MESSAGE = ' + msg.what );
32.
32 return false;
33.
33 }
34.
34 return true;
35.
35 }
36.
36 }
USER_TURN_ON
接下来是调用了adapterService.processStart()
view source print ?
01.
1 void processStart() {
02.
2 if (DBG) debugLog('processStart()');
03.
3 Class[] supportedProfileServices = Config.getSupportedProfiles();
04.
4 //Initialize data objects
05.
5 for (int i=0; i < supportedProfileServices.length;i++) {
06.
6 mProfileServicesState.put(supportedProfileServices[i].getName(),BluetoothAdapter.STATE_OFF);
07.
7 }
08.
8 mRemoteDevices = new RemoteDevices(this);
09.
9 mAdapterProperties.init(mRemoteDevices);
10.
10
11.
11 if(mBondStateMachine != null) //Avoid resource leakage
12.
12 {
13.
13 mBondStateMachine.doQuit();
14.
14 mBondStateMachine.cleanup();
15.
15 }
16.
16
17.
17 if (DBG) {debugLog('processStart(): Make Bond State Machine');}
18.
18 mBondStateMachine = BondStateMachine.make(this, mAdapterProperties, mRemoteDevices);
19.
19
20.
20 mJniCallbacks.init(mBondStateMachine,mRemoteDevices);
21.
21
22.
22 //FIXME: Set static instance here???
23.
23 setAdapterService(this);
24.
24
25.
25 //Start profile services
26.
26 if (!mProfilesStarted && supportedProfileServices.length >0) {
27.
27 //Startup all profile services
28.
28 setProfileServiceState(supportedProfileServices,BluetoothAdapter.STATE_ON);
29.
29 }else {
30.
30 if (DBG) {debugLog('processStart(): Profile Services alreay started');}
31.
31 mAdapterStateMachine.sendMessage(mAdapterStateMachine.obtainMessage(AdapterState.STARTED));
32.
32 }
33.
33 }
processStart
setProfileServiceState(supportedProfileServices,BluetoothAdapter.STATE_ON); 是用来开启Bluetooth Profile 的，log 中可以看到：
view source print ?
01.
1 BluetoothAdapterService( 1789): Starting service com.android.bluetooth.hfp.HeadsetService
02.
2 BluetoothAdapterService( 1789): Starting service com.android.bluetooth.a2dp.A2dpService
03.
3 BluetoothAdapterService( 1789): Starting service com.android.bluetooth.hid.HidService
04.
4 BluetoothAdapterService( 1789): Starting service com.android.bluetooth.hdp.HealthService
05.
5 BluetoothAdapterService( 1789): Starting service com.android.bluetooth.pan.PanService
06.
6 BluetoothAdapterService( 1789): Starting service com.android.bluetooth.gatt.GattService
07.
7 BluetoothAdapterService( 1789): Starting service com.android.bluetooth.map.BluetoothMapService
08.
8 bluedroid( 1789): get_profile_interface handsfree
09.
9 bluedroid( 1789): get_profile_interface a2dp
10.
10 bluedroid( 1789): get_profile_interface avrcp
11.
11 bluedroid( 1789): get_profile_interface hidhost
12.
12 bluedroid( 1789): get_profile_interface health
13.
13 bluedroid( 1789): get_profile_interface pan
14.
14 bluedroid( 1789): get_profile_interface gatt?
BT Profile log
然后可以看到：mAdapterStateMachine.sendMessage(mAdapterStateMachine.obtainMessage(AdapterState.STARTED));
交给了PendingCommandState下的processMessage处理
view source print ?
01.
1 case STARTED: {
02.
2 if (DBG) Log.d(TAG,'CURRENT_STATE=PENDING, MESSAGE = STARTED, isTurningOn=' + isTurningOn + ', isTurningOff=' + isTurningOff);
03.
3 //Remove start timeout
04.
4 removeMessages(START_TIMEOUT);
05.
5
06.
6 //Enable
07.
7 boolean ret = adapterService.enableNative();
08.
8 if (!ret) {
09.
9 errorLog('Error while turning Bluetooth On');
10.
10 notifyAdapterStateChange(BluetoothAdapter.STATE_OFF);
11.
11 transitionTo(mOffState);
12.
12 } else {
13.
13 sendMessageDelayed(ENABLE_TIMEOUT, ENABLE_TIMEOUT_DELAY);
14.
14 }
15.
15 }
case STARTED
由mAdapterService.enableNative(); 可以看到 /*package*/ native boolean enableNative();
此时就进入了JNI了
5. JNI 调用
enableNative() 是在 packages/apps/Bluetooth/jni/com_android_bluetooth_btservice_AdapterService.cpp
view source print ?
01.
1 static jboolean enableNative(JNIEnv* env, jobject obj) {
02.
2 ALOGV('%s:',__FUNCTION__);
03.
3
04.
4 jboolean result = JNI_FALSE;
05.
5 if (!sBluetoothInterface) return result;
06.
6
07.
7 int ret = sBluetoothInterface->enable();
08.
8 result = (ret == BT_STATUS_SUCCESS) ? JNI_TRUE : JNI_FALSE;
09.
9 return result;
10.
10 }
enableNative static const bt_interface_t *sBluetoothInterface = NULL;
view source print ?
001.
1 /** NOTE: By default, no profiles are initialized at the time of init/enable.
002.
2 * Whenever the application invokes the 'init' API of a profile, then one of
003.
3 * the following shall occur:
004.
4 *
005.
5 * 1.) If Bluetooth is not enabled, then the Bluetooth core shall mark the
006.
6 * profile as enabled. Subsequently, when the application invokes the
007.
7 * Bluetooth 'enable', as part of the enable sequence the profile that were
008.
8 * marked shall be enabled by calling appropriate stack APIs. The
009.
9 * 'adapter_properties_cb' shall return the list of UUIDs of the
010.
10 * enabled profiles.
011.
11 *
012.
12 * 2.) If Bluetooth is enabled, then the Bluetooth core shall invoke the stack
013.
13 * profile API to initialize the profile and trigger a
014.
14 * 'adapter_properties_cb' with the current list of UUIDs including the
015.
15 * newly added profile's UUID.
016.
16 *
017.
17 * The reverse shall occur whenever the profile 'cleanup' APIs are invoked
018.
18 */
019.
19
020.
20 /** Represents the standard Bluetooth DM interface. */
021.
21 typedef struct {
022.
22 /** set to sizeof(bt_interface_t) */
023.
23 size_t size;
024.
24 /**
025.
25 * Opens the interface and provides the callback routines
026.
26 * to the implemenation of this interface.
027.
27 */
028.
28 int (*init)(bt_callbacks_t* callbacks );
029.
29
030.
30 /** Enable Bluetooth. */
031.
31 int (*enable)(void);
032.
32
033.
33 /** Disable Bluetooth. */
034.
34 int (*disable)(void);
035.
35
036.
36 /** This ensures the chip is Powered ON to support other radios in the combo chip.
037.
37 * If the chip is OFF it set the chip to ON, if it is already ON it just increases the radio ref count
038.
38 * to keep track when to Power OFF */
039.
39 int (*enableRadio)(void);
040.
40
041.
41 /** This decreases radio ref count and ensures that chip is Powered OFF
042.
42 * when the radio ref count becomes zero. */
043.
43 int (*disableRadio)(void);
044.
44
045.
45 /** Closes the interface. */
046.
46 void (*cleanup)(void);
047.
47
048.
48 /** Get all Bluetooth Adapter properties at init */
049.
49 int (*get_adapter_properties)(void);
050.
50
051.
51 /** Get Bluetooth Adapter property of 'type' */
052.
52 int (*get_adapter_property)(bt_property_type_t type);
053.
53
054.
54 /** Set Bluetooth Adapter property of 'type' */
055.
55 /* Based on the type, val shall be one of
056.
56 * bt_bdaddr_t or bt_bdname_t or bt_scanmode_t etc
057.
57 */
058.
58 int (*set_adapter_property)(const bt_property_t *property);
059.
59
060.
60 /** Get all Remote Device properties */
061.
61 int (*get_remote_device_properties)(bt_bdaddr_t *remote_addr);
062.
62
063.
63 /** Get Remote Device property of 'type' */
064.
64 int (*get_remote_device_property)(bt_bdaddr_t *remote_addr,
065.
65 bt_property_type_t type);
066.
66
067.
67 /** Set Remote Device property of 'type' */
068.
68 int (*set_remote_device_property)(bt_bdaddr_t *remote_addr,
069.
69 const bt_property_t *property);
070.
70
071.
71 /** Get Remote Device's service record for the given UUID */
072.
72 int (*get_remote_service_record)(bt_bdaddr_t *remote_addr,
073.
73 bt_uuid_t *uuid);
074.
74
075.
75 /** Start SDP to get remote services */
076.
76 int (*get_remote_services)(bt_bdaddr_t *remote_addr);
077.
77
078.
78 /** Start Discovery */
079.
79 int (*start_discovery)(void);
080.
80
081.
81 /** Cancel Discovery */
082.
82 int (*cancel_discovery)(void);
083.
83
084.
84 /** Create Bluetooth Bonding */
085.
85 int (*create_bond)(const bt_bdaddr_t *bd_addr);
086.
86
087.
87 /** Remove Bond */
088.
88 int (*remove_bond)(const bt_bdaddr_t *bd_addr);
089.
89
090.
90 /** Cancel Bond */
091.
91 int (*cancel_bond)(const bt_bdaddr_t *bd_addr);
092.
92
093.
93 /** BT Legacy PinKey Reply */
094.
94 /** If accept==FALSE, then pin_len and pin_code shall be 0x0 */
095.
95 int (*pin_reply)(const bt_bdaddr_t *bd_addr, uint8_t accept,
096.
96 uint8_t pin_len, bt_pin_code_t *pin_code);
097.
97
098.
98 /** BT SSP Reply - Just Works, Numeric Comparison and Passkey
099.
99 * passkey shall be zero for BT_SSP_VARIANT_PASSKEY_COMPARISON &
100.
100 * BT_SSP_VARIANT_CONSENT
101.
101 * For BT_SSP_VARIANT_PASSKEY_ENTRY, if accept==FALSE, then passkey
102.
102 * shall be zero */
103.
103 int (*ssp_reply)(const bt_bdaddr_t *bd_addr, bt_ssp_variant_t variant,
104.
104 uint8_t accept, uint32_t passkey);
105.
105
106.
106 /** Get Bluetooth profile interface */
107.
107 const void* (*get_profile_interface) (const char *profile_id);
108.
108
109.
109 /** Bluetooth Test Mode APIs - Bluetooth must be enabled for these APIs */
110.
110 /* Configure DUT Mode - Use this mode to enter/exit DUT mode */
111.
111 int (*dut_mode_configure)(uint8_t enable);
112.
112
113.
113 /* Send any test HCI (vendor-specific) command to the controller. Must be in DUT Mode */
114.
114 int (*dut_mode_send)(uint16_t opcode, uint8_t *buf, uint8_t len);
115.
115 /** BLE Test Mode APIs */
116.
116 /* opcode MUST be one of: LE_Receiver_Test, LE_Transmitter_Test, LE_Test_End */
117.
117 int (*le_test_mode)(uint16_t opcode, uint8_t *buf, uint8_t len);
118.
118
119.
119 /* enable or disable bluetooth HCI snoop log */
120.
120 int (*config_hci_snoop_log)(uint8_t enable);
121.
121
122.
122 /** Get FM module interface */
123.
123 const void* (*get_fm_interface) ();
124.
124 } bt_interface_t;
bt_interface_t 定义
bt_interface_t 定义 在hardware/libhardware/include/hardware/bluetooth.h
sBluetoothInterface的初始化在classInitNative()，这个函数大概做了以下的事情： 1)、注册java的回调函数（就是当下层已经打开蓝牙了，然后要通知上层，蓝牙已经打开了，java层就可以发送蓝牙打开的Broadcast了。） 2)、初始化蓝牙模块的HAL接口。 3)、得到sBluetoothInterface
6. Bluedroid ->bluetooth.c
external/bluetooth/bluedroid/btif/src/bluetooth.c
sBluetoothInterface->enable(); 会调到下方
view source print ?
01.
1 static int enable( void )
02.
2 {
03.
3 ALOGI('enable');
04.
4
05.
5 /* sanity check */
06.
6 if (interface_ready() == FALSE)
07.
7 return BT_STATUS_NOT_READY;
08.
8
09.
9 return btif_enable_bluetooth();
10.
10 }
bluetooth:enable()
接下来调用：external/bluetooth/bluedroid/btif/src/Btif_core.c
view source print ?
01.
1 /*******************************************************************************
02.
2 **
03.
3 ** Function btif_enable_bluetooth
04.
4 **
05.
5 ** Description Performs chip power on and kickstarts OS scheduler
06.
6 **
07.
7 ** Returns bt_status_t
08.
8 **
09.
9 *******************************************************************************/
10.
10
11.
11 bt_status_t btif_enable_bluetooth(void)
12.
12 {
13.
13 BTIF_TRACE_DEBUG0('BTIF ENABLE BLUETOOTH');
14.
14
15.
15 if (0 == btif_core_radio_ref_count){
16.
16
17.
17 if (btif_core_state != BTIF_CORE_STATE_DISABLED)
18.
18 {
19.
19 ALOGD('not disabled
20.
');
21.
20 return BT_STATUS_DONE;
22.
21 }
23.
22
24.
23 btif_core_state = BTIF_CORE_STATE_ENABLING;
25.
24
26.
25 /* Create the GKI tasks and run them */
27.
26 bte_main_enable();
28.
27 btif_core_radio_ref_count++;
29.
28 }
30.
29 else
31.
30 {
32.
31 btif_core_radio_ref_count++;
33.
32 /*btif core/chip is already enabled so just do other initialisation according to event*/
34.
33 btif_transfer_context(btif_in_generic_evt, BTIF_CORE_BT_STATE_ON, NULL, 0, NULL);
35.
34 }
36.
35
37.
36 return BT_STATUS_SUCCESS;
38.
37 }
btif_enable_bluetooth
external/bluetooth/bluedroid/main/Bte_main.c
view source print ?
01.
1 /******************************************************************************
02.
2 **
03.
3 ** Function bte_main_enable
04.
4 **
05.
5 ** Description BTE MAIN API - Creates all the BTE tasks. Should be called
06.
6 ** part of the Bluetooth stack enable sequence
07.
7 **
08.
8 ** Returns None
09.
9 **
10.
10 ******************************************************************************/
11.
11 void bte_main_enable()
12.
12 {
13.
13 APPL_TRACE_DEBUG1('%s', __FUNCTION__);
14.
14
15.
15 /* Initialize BTE control block */
16.
16 BTE_Init();
17.
17
18.
18 lpm_enabled = FALSE;
19.
19
20.
20 bte_hci_enable();
21.
21
22.
22 GKI_create_task((TASKPTR)btu_task, BTU_TASK, BTE_BTU_TASK_STR,
23.
23 (UINT16 *) ((UINT8 *)bte_btu_stack + BTE_BTU_STACK_SIZE),
24.
24 sizeof(bte_btu_stack));
25.
25
26.
26 GKI_run(0);
27.
27 }
bte_main_enable
view source print ?
01.
1 /******************************************************************************
02.
2 **
03.
3 ** Function bte_hci_enable
04.
4 **
05.
5 ** Description Enable HCI & Vendor modules
06.
6 **
07.
7 ** Returns None
08.
8 **
09.
9 ******************************************************************************/
10.
10 static void bte_hci_enable(void)
11.
11 {
12.
12 APPL_TRACE_DEBUG1('%s', __FUNCTION__);
13.
13
14.
14 preload_start_wait_timer();
15.
15
16.
16 if (bt_hc_if)
17.
17 {
18.
18 int result = bt_hc_if->init(&hc_callbacks, btif_local_bd_addr.address);
19.
19 APPL_TRACE_EVENT1('libbt-hci init returns %d', result);
20.
20
21.
21 assert(result == BT_HC_STATUS_SUCCESS);
22.
22
23.
23 if (hci_logging_enabled == TRUE || hci_logging_config == TRUE)
24.
24 bt_hc_if->logging(BT_HC_LOGGING_ON, hci_logfile);
25.
25
26.
26 #if (defined (BT_CLEAN_TURN_ON_DISABLED) && BT_CLEAN_TURN_ON_DISABLED == TRUE)
27.
27 APPL_TRACE_DEBUG1('%s Not Turninig Off the BT before Turninig ON', __FUNCTION__);
28.
28
29.
29 /* Do not power off the chip before powering on if BT_CLEAN_TURN_ON_DISABLED flag
30.
30 is defined and set to TRUE to avoid below mentioned issue.
31.
31
32.
32 Wingray kernel driver maintains a combined counter to keep track of
33.
33 BT-Wifi state. Invoking set_power(BT_HC_CHIP_PWR_OFF) when the BT is already
34.
34 in OFF state causes this counter to be incorrectly decremented and results in undesired
35.
35 behavior of the chip.
36.
36
37.
37 This is only a workaround and when the issue is fixed in the kernel this work around
38.
38 should be removed. */
39.
39 #else
40.
40 /* toggle chip power to ensure we will reset chip in case
41.
41 a previous stack shutdown wasn't completed gracefully */
42.
42 bt_hc_if->set_power(BT_HC_CHIP_PWR_OFF);
43.
43 #endif
44.
44 bt_hc_if->set_power(BT_HC_CHIP_PWR_ON);
45.
45
46.
46 bt_hc_if->preload(NULL);
47.
47 }
48.
48 }
bte_hci_enable
我们先看下bt_hc_if->set_power，前面有做一些初始化Bluedroid的动作
由 bt_hc_if->set_power(BT_HC_CHIP_PWR_ON);可以看出：
static bt_hc_interface_t *bt_hc_if=NULL;
下面是bt_hc_if 的初始化
view source print ?
01.
1 /******************************************************************************
02.
2 **
03.
3 ** Function bte_main_in_hw_init
04.
4 **
05.
5 ** Description Internal helper function for chip hardware init
06.
6 **
07.
7 ** Returns None
08.
8 **
09.
9 ******************************************************************************/
10.
10 static void bte_main_in_hw_init(void)
11.
11 {
12.
12 if ( (bt_hc_if = (bt_hc_interface_t *) bt_hc_get_interface())
13.
13 == NULL)
14.
14 {
15.
15 APPL_TRACE_ERROR0('!!! Failed to get BtHostControllerInterface !!!');
16.
16 }
17.
17
18.
18 memset(&preload_retry_cb, 0, sizeof(bt_preload_retry_cb_t));
19.
19 }
bte_main_in_hw_init
external/bluetooth/bluedroid/hci/src/Bt_hci_bdroid.c
view source print ?
01.
1 /*******************************************************************************
02.
2 **
03.
3 ** Function bt_hc_get_interface
04.
4 **
05.
5 ** Description Caller calls this function to get API instance
06.
6 **
07.
7 ** Returns API table
08.
8 **
09.
9 *******************************************************************************/
10.
10 const bt_hc_interface_t *bt_hc_get_interface(void)
11.
11 {
12.
12 return &bluetoothHCLibInterface;
13.
13 }
bt_hc_get_interface
view source print ?
01.
1 static const bt_hc_interface_t bluetoothHCLibInterface = {
02.
2 sizeof(bt_hc_interface_t),
03.
3 init,
04.
4 set_power,
05.
5 lpm,
06.
6 preload,
07.
7 postload,
08.
8 transmit_buf,
09.
9 set_rxflow,
10.
10 logging,
11.
11 cleanup
12.
12 };
bluetoothHCLibInterface
由以上可以看到set_power
view source print ?
01.
1 /** Chip power control */
02.
2 static void set_power(bt_hc_chip_power_state_t state)
03.
3 {
04.
4 int pwr_state;
05.
5
06.
6 BTHCDBG('set_power %d', state);
07.
7
08.
8 /* Calling vendor-specific part */
09.
9 pwr_state = (state == BT_HC_CHIP_PWR_ON) ? BT_VND_PWR_ON : BT_VND_PWR_OFF;
10.
10
11.
11 if (bt_vnd_if)
12.
12 bt_vnd_if->op(BT_VND_OP_POWER_CTRL, &pwr_state);
13.
13 else
14.
14 ALOGE('vendor lib is missing!');
15.
15 }
set_power
可以看到，bt_vnd_if->op(BT_VND_OP_POWER_CTRL, &pwr_state);
external/bluetooth/bluedroid/hci/src/Bt_hw.c
bt_vendor_interface_t *bt_vnd_if=NULL;
bt_vnd_if 初始化：
view source print ?
01.
1 /******************************************************************************
02.
2 **
03.
3 ** Function init_vnd_if
04.
4 **
05.
5 ** Description Initialize vendor lib interface
06.
6 **
07.
7 ** Returns None
08.
8 **
09.
9 ******************************************************************************/
10.
10 void init_vnd_if(unsigned char *local_bdaddr)
11.
11 {
12.
12 void *dlhandle;
13.
13
14.
14 dlhandle = dlopen('libbt-vendor.so', RTLD_NOW);
15.
15 if (!dlhandle)
16.
16 {
17.
17 ALOGE('!!! Failed to load libbt-vendor.so !!!');
18.
18 return;
19.
19 }
20.
20
21.
21 bt_vnd_if = (bt_vendor_interface_t *) dlsym(dlhandle, 'BLUETOOTH_VENDOR_LIB_INTERFACE');
22.
22 if (!bt_vnd_if)
23.
23 {
24.
24 ALOGE('!!! Failed to get bt vendor interface !!!');
25.
25 return;
26.
26 }
27.
27
28.
28 bt_vnd_if->init(&vnd_callbacks, local_bdaddr);
29.
29 }
init_vnd_if
在init_vnd_if()函数可以看到其实是一个libbt-vendor.so的interface。这个是Vendor（芯片厂商）的library
Vendor就是芯片供应商的意思，在他们做好一块蓝牙芯片后，需要提供一些硬件相关的动作，比如上下电，设置波特率之类的。但是这些操作一般不会对没有许可的开放。Bluedroid提供了一个统一的接口bt_vendor_interface_t，供应商只需要实现这个接口定义的蓝牙相关的操作就可以交给bluedroid去做剩下的事情了
下面主要是broadcom 为例，我们进入/hardware/里面：
$ find . -name Android.mk |xargs grep libbt
./broadcom/libbt/Android.mk:LOCAL_MODULE := libbt-vendor
./broadcom/libbt/Android.mk:LOCAL_MODULE := libbt-vendor
./broadcom/libbt/Android.mk: LOCAL_SRC_FILES := $(TI_BT_VENDOR_PATH)/libbt-vendor-ti.c
./qcom/bt/Android.mk:include $(call all-named-subdir-makefiles,libbt-vendor)
./qcom/bt/libbt-vendor/Android.mk:LOCAL_MODULE := libbt-vendor
或者
$ grep -nr BT_VND_OP_POWER_CTRL
broadcom/libbt/src/bt_vendor_brcm.c:147: case BT_VND_OP_POWER_CTRL:
broadcom/libbt/src/bt_vendor_brcm.c:149: BTVNDDBG('op: BT_VND_OP_POWER_CTRL');
qcom/bt/libbt-vendor/src/bt_vendor_qcom.c:105: case BT_VND_OP_POWER_CTRL:
在broadcom/libbt/src/bt_vendor_brcm.c
view source print ?
001.
1 /** Requested operations */
002.
2 static int op(bt_vendor_opcode_t opcode, void *param)
003.
3 {
004.
4 int retval = 0;
005.
5
006.
6 switch(opcode)
007.
7 {
008.
8 case BT_VND_OP_POWER_CTRL:
009.
9 {
010.
10 BTVNDDBG('op: BT_VND_OP_POWER_CTRL');
011.
11 int *state = (int *) param;
012.
12 if (*state == BT_VND_PWR_OFF)
013.
13 upio_set_bluetooth_power(UPIO_BT_POWER_OFF);
014.
14 else if (*state == BT_VND_PWR_ON)
015.
15 upio_set_bluetooth_power(UPIO_BT_POWER_ON);
016.
16 BTVNDDBG('Delay for a while after BT power on');
017.
17 usleep(200000);
018.
18 }
019.
19 break;
020.
20
021.
21 case BT_VND_OP_FW_CFG:
022.
22 {
023.
23 BTVNDDBG('op: BT_VND_OP_FW_CFG');
024.
24 hw_config_start();
025.
25 }
026.
26 break;
027.
27
028.
28 case BT_VND_OP_SCO_CFG:
029.
29 {
030.
30 BTVNDDBG('op: BT_VND_OP_SCO_CFG');
031.
31 #if (SCO_CFG_INCLUDED == TRUE)
032.
32 if (is2076())
033.
33 {
034.
34 ALOGD('PCM2 Settings for AP6476(BCM2076)');
035.
35 hw_pcm2_config();
036.
36 }
037.
37 else
038.
38 {
039.
39 ALOGD('SCO config');
040.
40 hw_sco_config();
041.
41 }
042.
42 #else
043.
43 retval = -1;
044.
44 #endif
045.
45 }
046.
46 break;
047.
47
048.
48 case BT_VND_OP_USERIAL_OPEN:
049.
49 {
050.
50 BTVNDDBG('op: BT_VND_OP_USERIAL_OPEN');
051.
51 int (*fd_array)[] = (int (*)[]) param;
052.
52 int fd, idx;
053.
53 fd = userial_vendor_open((tUSERIAL_CFG *) &userial_init_cfg);
054.
54 if (fd != -1)
055.
55 {
056.
56 for (idx=0; idx < CH_MAX; idx++)
057.
57 (*fd_array)[idx] = fd;
058.
58
059.
59 retval = 1;
060.
60 }
061.
61 /* retval contains numbers of open fd of HCI channels */
062.
62 }
063.
63 break;
064.
64
065.
65 case BT_VND_OP_USERIAL_CLOSE:
066.
66 {
067.
67 BTVNDDBG('op: BT_VND_OP_USERIAL_CLOSE');
068.
68 userial_vendor_close();
069.
69 }
070.
70 break;
071.
71
072.
72 case BT_VND_OP_GET_LPM_IDLE_TIMEOUT:
073.
73 {
074.
74 BTVNDDBG('op: BT_VND_OP_GET_LPM_IDLE_TIMEOUT');
075.
75 uint32_t *timeout_ms = (uint32_t *) param;
076.
76 *timeout_ms = hw_lpm_get_idle_timeout();
077.
77 }
078.
78 break;
079.
79
080.
80 case BT_VND_OP_LPM_SET_MODE:
081.
81 {
082.
82 BTVNDDBG('op: BT_VND_OP_LPM_SET_MODE');
083.
83 uint8_t *mode = (uint8_t *) param;
084.
84 retval = hw_lpm_enable(*mode);
085.
85 }
086.
86 break;
087.
87
088.
88 case BT_VND_OP_LPM_WAKE_SET_STATE:
089.
89 {
090.
90 uint8_t *state = (uint8_t *) param;
091.
91 uint8_t wake_assert = (*state == BT_VND_LPM_WAKE_ASSERT) ?
092.
92 TRUE : FALSE;
093.
93
094.
94 hw_lpm_set_wake_state(wake_assert);
095.
95 }
096.
96 break;
097.
97
098.
98 case BT_VND_OP_WBS_CFG:
099.
99 {
100.
100 #if (SCO_USE_I2S_INTERFACE == TRUE)
101.
101 uint8_t *state = (uint8_t *) param;
102.
102 hw_wbs_enable(*state);
103.
103 #else
104.
104 ALOGE('WBS configuration not supported without I2S');
105.
105 #endif // (SCO_USE_I2S_INTERFACE == TRUE)
106.
106 }
107.
107 break;
108.
108
109.
109 case BT_VND_OP_EPILOG:
110.
110 {
111.
111 #if (HW_END_WITH_HCI_RESET == FALSE)
112.
112 if (bt_vendor_cbacks)
113.
113 {
114.
114 bt_vendor_cbacks->epilog_cb(BT_VND_OP_RESULT_SUCCESS);
115.
115 }
116.
116 #else
117.
117 hw_epilog_process();
118.
118 #endif
119.
119 }
120.
120 break;
121.
121 }
122.
122
123.
123 return retval;
124.
124 }
op
view source print ?
01.
1 /*******************************************************************************
02.
2 **
03.
3 ** Function upio_set_bluetooth_power
04.
4 **
05.
5 ** Description Interact with low layer driver to set Bluetooth power
06.
6 ** on/off.
07.
7 **
08.
8 ** Returns 0 : SUCCESS or Not-Applicable
09.
9 ** <0 : ERROR
10.
10 **
11.
11 *******************************************************************************/
12.
12 int upio_set_bluetooth_power(int on)
13.
13 {
14.
14 int sz;
15.
15 int fd = -1;
16.
16 int ret = -1;
17.
17 char buffer = '0';
18.
18
19.
19 switch(on)
20.
20 {
21.
21 case UPIO_BT_POWER_OFF:
22.
22 buffer = '0';
23.
23 break;
24.
24
25.
25 case UPIO_BT_POWER_ON:
26.
26 buffer = '1';
27.
27 break;
28.
28 }
29.
29
30.
30 if (is_emulator_context())
31.
31 {
32.
32 /* if new value is same as current, return -1 */
33.
33 if (bt_emul_enable == on)
34.
34 return ret;
35.
35
36.
36 UPIODBG('set_bluetooth_power [emul] %d', on);
37.
37
38.
38 bt_emul_enable = on;
39.
39 return 0;
40.
40 }
41.
41
42.
42 /* check if we have rfkill interface */
43.
43 if (is_rfkill_disabled())
44.
44 return 0;
45.
45
46.
46 if (rfkill_id == -1)
47.
47 {
48.
48 if (init_rfkill())
49.
49 return ret;
50.
50 }
51.
51
52.
52 fd = open(rfkill_state_path, O_WRONLY);
53.
53
54.
54 if (fd < 0)
55.
55 {
56.
56 ALOGE('set_bluetooth_power : open(%s) for write failed: %s (%d)',
57.
57 rfkill_state_path, strerror(errno), errno);
58.
58 return ret;
59.
59 }
60.
60
61.
61 sz = write(fd, &buffer, 1);
62.
62
63.
63 if (sz < 0) {
64.
64 ALOGE('set_bluetooth_power : write(%s) failed: %s (%d)',
65.
65 rfkill_state_path, strerror(errno),errno);
66.
66 }
67.
67 else
68.
68 ret = 0;
69.
69
70.
70 if (fd >= 0)
71.
71 close(fd);
72.
72
73.
73 return ret;
74.
74 }
upio_set_bluetooth_power
static char *rfkill_state_path = NULL;
rfkill_state_path 是在下面初始化的。
view source print ?
01.
1 static int init_rfkill()
02.
2 {
03.
3 char path[64];
04.
4 char buf[16];
05.
5 int fd, sz, id;
06.
6
07.
7 if (is_rfkill_disabled())
08.
8 return -1;
09.
9
10.
10 for (id = 0; ; id++)
11.
11 {
12.
12 snprintf(path, sizeof(path), '/sys/class/rfkill/rfkill%d/type', id);
13.
13 fd = open(path, O_RDONLY);
14.
14 if (fd < 0)
15.
15 {
16.
16 ALOGE('init_rfkill : open(%s) failed: %s (%d)
17.
',
18.
17 path, strerror(errno), errno);
19.
18 return -1;
20.
19 }
21.
20
22.
21 sz = read(fd, &buf, sizeof(buf));
23.
22 close(fd);
24.
23
25.
24 if (sz >= 9 && memcmp(buf, 'bluetooth', 9) == 0)
26.
25 {
27.
26 rfkill_id = id;
28.
27 break;
29.
28 }
30.
29 }
31.
30
32.
31 asprintf(&rfkill_state_path, '/sys/class/rfkill/rfkill%d/state', rfkill_id);
33.
32 return 0;
34.
33 }
init_rfkill
原来就是在rfkill_state_path(/sys/class/rfkill/rfkill[x]/state)虚拟设备里写入了1
shell@android:/sys/class/rfkill/rfkill0 $ cat state
0 // 表示蓝牙是关闭状态
shell@android:/sys/class/rfkill/rfkill0 $ cat state
1 // 开启蓝牙后可以看到
rfkill是Linux下的一个标准的无线控制的虚拟设备，Linux也提供了rfkill的命令去查看以及控制所有的注册的无线设备。它们会在/dev/（PC的Linux）或者/sys/class（一般是Android）下生成相应的虚拟设备。
结合set_power 下面的log 和 bluetoothHCLibInterface 定义，可以看到接下来是调用的 bluetoothHCLibInterface 里的 proload->bthc_signal_event(HC_EVENT_PRELOAD)->bt_hc_worker_thread －》userial_open(USERIAL_PORT_1)->bt_vnd_if->op(BT_VND_OP_USERIAL_OPEN, &fd_array);－>userial_vendor_open((tUSERIAL_CFG *) &userial_init_cfg);
接下来是Hardware.c里
hw_config_start－》hw_config_cback
部分log 如下：
view source print ?
01.
1 01-01 00:21:02.240 I/bt_userial_vendor( 1821): userial vendor open: opening /dev/ttyMFD0
02.
2 01-01 00:21:02.240 I/GKI_LINUX( 1821): gki_task_entry: gki_task_entry task_id=0 [BTU] starting
03.
3 01-01 00:21:02.240 I/bt-btu ( 1821): btu_task pending for preload complete event
04.
4 01-01 00:21:02.260 I/bt_userial_vendor( 1821): device fd = 71 open
05.
5 01-01 00:21:02.260 E/bt_hwcfg( 1821): Hardware.c--hw_config_start
06.
6 01-01 00:21:02.290 D/bt_hwcfg( 1821): Chipset BCM2076B1
07.
7 01-01 00:21:02.290 D/bt_hwcfg( 1821): Target name = [BCM2076B1]
08.
8 01-01 00:21:02.290 I/bt_hwcfg( 1821): FW patchfile: /etc/firmware/bt/bcm2076b1.hcd
09.
9 01-01 00:21:02.300 I/bt_hwcfg( 1821): bt vendor lib: set UART baud 3000000
10.
10 01-01 00:21:02.590 I/bt_hwcfg( 1821): bt vendor lib: set UART baud 115200
11.
11 01-01 00:21:02.590 D/bt_hwcfg( 1821): Settlement delay -- 100 ms
12.
12 01-01 00:21:02.690 I/bt_hwcfg( 1821): bt vendor lib: set UART baud 3000000
13.
13 01-01 00:21:02.690 I/bt_hwcfg( 1821): Setting local bd addr to 22:22:C7:74:9F:05
14.
14 01-01 00:21:02.720 I/bt_hwcfg( 1821): vendor lib fwcfg completed
log
下面为minicom 里开启蓝牙的logcat 的log
view source print ?
001.
1 [ 619.545795] iTCO_wdt: iTCO_wdt_keepalive
002.
2 [ 629.551341] iTCO_wdt: iTCO_wdt_keepalive
003.
3 [ 639.556687] iTCO_wdt: iTCO_wdt_keepalive
004.
4
005.
5 shell@byt_t_crv2:/ $
006.
6 shell@byt_t_crv2:/ $
007.
7 shell@byt_t_crv2:/ $
008.
8 shell@byt_t_crv2:/ $
009.
9 shell@byt_t_crv2:/ $
010.
10 shell@byt_t_crv2:/ $
011.
11 shell@byt_t_crv2:/ $
012.
12 shell@byt_t_crv2:/ $ logc[ 649.561872] iTCO_wdt: iTCO_wdt_keepalive
013.
13 at -vtime
014.
14 --------- beginning of /dev/log/main
015.
15 01-01 00:20:19.810 I/CRASHLOG( 165): [IPTRAK] check_iptrak_file: Initial value of 'need_update' 0.
016.
16 01-01 00:20:19.810 I/CRASHLOG( 165): [IPTRAK] check_iptrak_file: Force update value 0.
017.
17 01-01 00:20:19.810 I/CRASHLOG( 165): [IPTRAK] check_iptrak_file: 'need_update' value 0.
018.
18 [ 654.053041] kionix_accel 3-000e: kionix_accel_enable: waiting for resume
019.
19 [ 654.054183] request_suspend_state: wakeup (3->0) at 653345302368 (2001-01-01 00:20:52.374454198 UTC)
020.
20 01-01 00:20:52.370 I/WindowManager( 621): Screen turning on...
021.
21 --------- beginning of /dev/log/system
022.
22 01-01 00:20:52.370 I/PowerManagerServic[ 654.085087] i915 0000:00:02.0: setting latency timer to 64
023.
23 e( 621): Waking up from sleep...
024.
24 01-01 00:20:52.380 I/InputDis[ 654.097219] [drm:clock_off_bend_spread] *ERROR* INFO: PUNIT clocks already OFF
025.
25 patcher( 621): [ 654.106967] [drm:clock_off_bend_spread] *ERROR* INFO: PUNIT clocks already OFF
026.
26 Dropped event because input dispatch is disabled[ 654.119349] [drm:intel_modeset_pipe_config] *ERROR* plane bpp: 18, pipe bpp: 18, dithering: 0
027.
27 .
028.
28 01-01 00:20:52.380 E/Sensors ( 621): writeToFile: line: 209: Cannot open the driver interface for activate: /sys/bus/i2c/devices/3-000e/enable
029.
29 01-01 00:20:52.380 V/KeyguardServiceDelegate( 621): onScreenTurnedOn(showListener = com.android.internal.policy.impl.PhoneWindowManager$18@225247d8)
030.
30 01-01 00:20:52.380 V/ActivityManager( 621): Broadcast: Intent { act=android.intent.action.SCREEN_ON flg=0x50000010 } ordered=true userid=-1
031.
31 01-01 00:20:52.380 V/ActivityManager( 621): Enqueing broadcast: android.intent.action.SCREEN_ON replacePending=false
032.
32 01-01 00:20:52.380 I/ActivityManager( 621): Broadcast intent Intent { act=android.intent.action.SCREEN_ON flg=0x50000010 } on foreground queue
033.
33 01-01 00:20:52.380 V/ActivityManager( 621): Enqueueing ordered broadcast BroadcastRecord{222e2420 u-1 android.intent.action.SCREEN_ON}: prev had 0
034.
34 01-01 00:20:52.380 I/ActivityManager( 621): Enqueueing broadcast android.intent.action.SCREEN_ON seq=-1
035.
35 01-01 00:20:52.380 V/BroadcastQueue( 621): Schedule broadcasts [foreground]: current=false
036.
36 01-01 00:20:52.380 V/BroadcastQueue( 621): Received BROADCAST_INTENT_MSG
037.
37 01-01 00:20:52.380 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
038.
38 01-01 00:20:52.380 V/BroadcastQueue( 621): Processing ordered broadcast [foreground] BroadcastRecord{222e2420 u-1 android.intent.action.SCREEN_ON}
039.
39 01-01 00:20:52.380 V/BroadcastQueue( 621): Submitting BROADCAST_TIMEOUT_MSG [foreground] for BroadcastRecord{222e2420 u-1 android.intent.action.SCREEN_ON} at 663366
040.
40 01-01 00:20:52.380 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{223b23c0 u0 ReceiverList{22376b68 621 system/1000/u0 local:21f9aab8}}: BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
041.
41 01-01 00:20:52.380 I/BroadcastQueue( 621): Delivering to BroadcastFilter{223b23c0 u0 ReceiverList{22376b68 621 system/1000/u0 local:21f9aab8}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
042.
42 01-01 00:20:52.410 V/ActivityManager( 621): Finish receiver: android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@21f9aab8
043.
43 01-01 00:20:52.410 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
044.
44 01-01 00:20:52.410 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{222cdf18 u0 ReceiverList{22250af8 621 system/1000/u0 local:22064c68}}: BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
045.
45 01-01 00:20:52.410 I/BroadcastQueue( 621): Delivering to BroadcastFilter{222cdf18 u0 ReceiverList{22250af8 621 system/1000/u0 local:22064c68}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
046.
46 01-01 00:20:52.410 D/ActivityManager( 621): oom: memFactor=0 last=0 allowLow=false numProcs=34 last=34
047.
47 01-01 00:20:52.410 D/ActivityManager( 621): Did OOM ADJ in 0ms
048.
48 01-01 00:20:52.410 V/ActivityManager( 621): Finish receiver: android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@22064c68
049.
49 01-01 00:20:52.410 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
050.
50 01-01 00:20:52.410 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{222c5838 u0 ReceiverList{2224b440 621 system/1000/u0 local:2203e808}}: BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
051.
51 01-01 00:20:52.410 I/BroadcastQueue( 621): Delivering to BroadcastFilter{222c5838 u0 ReceiverList{2224b440 621 system/1000/u0 local:2203e808}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
052.
52 01-01 00:20:52.410 D/ActivityManager( 621): oom: memFactor=0 last=0 allowLow=false numProcs=34 last=34
053.
53 01-01 00:20:52.410 D/ActivityManager( 621): Did OOM ADJ in 0ms
054.
54 01-01 00:20:52.410 V/ActivityManager( 621): Finish receiver: android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@2203e808
055.
55 01-01 00:20:52.410 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
056.
56 01-01 00:20:52.420 D/AudioHardwareALSA( 158): setParameters
057.
57 01-01 00:20:52.420 D/RouteManager( 158): doSetParameters: key value pair screen_state=on, {+++ RECONSIDER ROUTING +++} due to External parameter change
058.
58 01-01 00:20:52.420 D/RouteManager( 158): reconsiderRouting
059.
59 01-01 00:20:52.420 D/EVENT_THREAD( 158): void CEventThread::trig(uint16_t): in
060.
60 01-01 00:20:52.420 D/EVENT_THREAD( 158): void CEventThread::trig(uint16_t): out
061.
61 01-01 00:20:52.420 D/RouteManager( 158): doReconsiderRouting: Platform Changes:
062.
62 01-01 00:20:52.420 D/RouteManager( 158): doReconsiderRouting: -Platform Screen State = On [has changed]
063.
63 01-01 00:20:52.420 D/EVENT_THREAD( 158): void CEventThread::run() Do poll with timeout: -1
064.
64 01-01 00:20:52.420 D/RouteManager( 158): reconsiderRouting: DONE
065.
65 01-01 00:20:52.420 D/EVENT_THREAD( 158): void CEventThread::run() POLLIN event on Fd (1)
066.
66 01-01 00:20:52.420 D/EVENT_THREAD( 158): void CEventThread::run() Do poll with timeout: -1
067.
67 01-01 00:20:52.420 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{222bc8b0 u0 ReceiverList{22246620 621 system/1000/u0 local:224d3230}}: BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
068.
68 01-01 00:20:52.420 I/BroadcastQueue( 621): Delivering to BroadcastFilter{222bc8b0 u0 ReceiverList{22246620 621 system/1000/u0 local:224d3230}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
069.
69 01-01 00:20:52.420 D/ActivityManager( 621): oom: memFactor=0 last=0 allowLow=false numProcs=34 last=34
070.
70 01-01 00:20:52.420 D/ActivityManager( 621): Did OOM ADJ in 0ms
071.
71 01-01 00:20:52.420 V/ActivityManager( 621): Finish receiver: android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@224d3230
072.
72 01-01 00:20:52.420 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
073.
73 01-01 00:20:52.420 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{22298f10 u0 ReceiverList{221e9848 621 system/1000/u0 local:2236f1b8}}: BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
074.
74 01-01 00:20:52.420 I/BroadcastQueue( 621): Delivering to BroadcastFilter{22298f10 u0 ReceiverList{221e9848 621 system/1000/u0 local:2236f1b8}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
075.
75 01-01 00:20:52.420 D/ActivityManager( 621): oom: memFactor=0 last=0 allowLow=false numProcs=34 last=34
076.
76 01-01 00:20:52.420 D/ActivityManager( 621): Did OOM ADJ in 0ms
077.
77 01-01 00:20:52.420 V/ActivityManager( 621): Finish receiver: android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@2236f1b8
078.
78 01-01 00:20:52.420 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
079.
79 01-01 00:20:52.420 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{2225d228 u0 ReceiverList{221de790 621 system/1000/u0 local:22200ba0}}: BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
080.
80 01-01 00:20:52.420 I/BroadcastQueue( 621): Delivering to BroadcastFilter{2225d228 u0 ReceiverList{221de790 621 system/1000/u0 local:22200ba0}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
081.
81 01-01 00:20:52.420 D/ActivityManager( 621): oom: memFactor=0 last=0 allowLow=false numProcs=34 last=34
082.
82 01-01 00:20:52.420 D/ActivityManager( 621): Did OOM ADJ in 0ms
083.
83 01-01 00:20:52.420 V/ActivityManager( 621): Finish receiver: android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@22200ba0
084.
84 01-01 00:20:52.420 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
085.
85 01-01 00:20:52.420 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{221fc378 u0 ReceiverList{220fb6f8 621 system/1000/u0 local:22240368}}: BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
086.
86 01-01 00:20:52.420 I/BroadcastQueue( 621): Delivering to BroadcastFilter{221fc378 u0 ReceiverList{220fb6f8 621 system/1000/u0 local:22240368}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
087.
87 01-01 00:20:52.420 D/ActivityManager( 621): oom: memFactor=0 last=0 allowLow=false numProcs=34 last=34
088.
88 01-01 00:20:52.420 D/ActivityManager( 621): Did OOM ADJ in 0ms
089.
89 01-01 00:20:52.420 V/ActivityManager( 621): Finish receiver: android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@22240368
090.
90 01-01 00:20:52.420 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
091.
91 01-01 00:20:52.420 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{2219dd90 u-1 ReceiverList{22015a60 621 system/1000/u-1 local:22508ef0}}: BroadcastRecord{222e2420 u-1 android.intent.action.SCREEN_ON}
092.
92 01-01 00:20:52.420 I/BroadcastQueue( 621): Delivering to BroadcastFilter{2219dd90 u-1 ReceiverList{22015a60 621 system/1000/u-1 local:22508ef0}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
093.
93 01-01 00:20:52.420 D/ActivityManager( 621): oom: memFactor=0 last=0 allowLow=false numProcs=34 last=34
094.
94 01-01 00:20:52.420 D/ActivityManager( 621): Did OOM ADJ in 0ms
095.
95 01-01 00:20:52.430 V/ActivityManager( 621): Finish receiver: android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@22508ef0
096.
96 01-01 00:20:52.430 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
097.
97 01-01 00:20:52.430 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{222af680 u0 ReceiverList{22506f08 814 com.android.systemui/10011/u0 remote:22571b78}}: BroadcastRecord{222e2420 u-1 android.intent.action.SCREEN_ON}
098.
98 01-01 00:20:52.430 I/BroadcastQueue( 621): Delivering to BroadcastFilter{222af680 u0 ReceiverList{22506f08 814 com.android.systemui/10011/u0 remote:22571b78}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
099.
99 01-01 00:20:52.430 D/ActivityManager( 621): oom: memFactor=0 last=0 allowLow=false numProcs=34 last=34
100.
100 01-01 00:20:52.430 D/ActivityManager( 621): Did OOM ADJ in 0ms
101.
101 01-01 00:20:52.450 D/InputMethodManagerService( 621): --- calledFromForegroundUserOrSystemProcess ? calling uid = 10011 system uid = 1000 calling userId = 0, foreground user id = 0, calling pid = 814com.android.server.InputMethodManagerService.getInputMethodList(InputMethodManagerService.java:945)
102.
102 01-01 00:20:52.450 D/InputMethodManagerService( 621): --- calledFromForegroundUserOrSystemProcess ? calling uid = 10011 system uid = 1000 calling userId = 0, foreground user id = 0, calling pid = 814com.android.server.InputMethodManagerService.getCurrentInputMethodSubtype(InputMethodManagerService.java:3084)
103.
103 01-01 00:20:52.450 V/ActivityManager( 621): Finish receiver: android.os.BinderProxy@22571b78
104.
104 01-01 00:20:52.450 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
105.
105 01-01 00:20:52.450 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{221b3108 u0 ReceiverList{22291410 814 com.android.systemui/10011/u0 remote:22291d30}}: BroadcastRecord{222e2420 u-1 android.intent.action.SCREEN_ON}
106.
106 01-01 00:20:52.450 I/BroadcastQueue( 621): Delivering to BroadcastFilter{221b3108 u0 ReceiverList{22291410 814 com.android.systemui/10011/u0 remote:22291d30}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
107.
107 01-01 00:20:52.450 D/ActivityManager( 621): oom: memFactor=0 last=0 allowLow=false numProcs=34 last=34
108.
108 01-01 00:20:52.450 D/ActivityManager( 621): Did OOM ADJ in 0ms
109.
109 01-01 00:20:52.480 V/KeyguardServiceDelegate( 621): **** SHOWN CALLED ****
110.
110 01-01 00:20:52.480 I/WindowManager( 621): Lock screen displayed!
111.
111 01-01 00:20:52.490 V/ActivityManager( 621): Finish receiver: android.os.BinderProxy@22291d30
112.
112 01-01 00:20:52.490 V/BroadcastQueue( 621): processNextBroadcast [foreground]: 0 broadcasts, 1 ordered broadcasts
113.
113 01-01 00:20:52.490 V/BroadcastQueue( 621): Delivering ordered [foreground] to registered BroadcastFilter{221529d8 u0 ReceiverList{21f8a0a8 621 system/1000/u0 local:21f8b640}}: BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
114.
114 01-01 00:20:52.490 I/BroadcastQueue( 621): Delivering to BroadcastFilter{221529d8 u0 ReceiverList{21f8a0a8 621 system/1000/u0 local:21f8b640}} (seq=-1): BroadcastRecord{222e2420 u-1android.intent.action.SCREEN_ON}
115.
115 01-01 00:20:52.490 V/ActivityManager( 621): Finish receiver: android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@21f8b640
116.
116 01-01 00:20:52.490