T19C_location_Hal新加接口

T19C_location_Hal新加接口

2023年3月8日

15:58

涉及的文件：

/android/frameworks/base/location/java/android/location/LocationManager.java

/android/frameworks/base/location/java/android/location/ILocationManager.aidl

/android/frameworks/base/services/core/java/com/android/server/LocationManagerService.java

/android/frameworks/base/services/core/java/com/android/server/location/GnssLocationProvider.java

 

/android/frameworks/base/services/core/jni/com_android_server_location_GnssLocationProvider.cpp

/android/hardware/interfaces/gnss/1.0/IGnss.hal

/android/hardware/libhardware/include/hardware/gps.h

 

/android/vendor/semidrive/modules/gps/hal/hidl/Gnss.h

/android/vendor/semidrive/modules/gps/hal/hidl/Gnss.cpp

/android/vendor/semidrive/modules/gps/hal/ubx_moduleIf.h

/android/vendor/semidrive/modules/gps/hal/ubx_moduleIf.cpp

/android/vendor/semidrive/modules/gps/hal/gps_thread.h

/android/vendor/semidrive/modules/gps/hal/gps_thread.cpp

新接口：

LocationManager.java --> public void setGnssHal(boolean isStop)

ILocationManager.aidl --> void setGnssHal(boolean isStop);

LocationManagerService.java -->public void setGnssHal(boolean isStop)

GnssLocationProvider.java -->setGnssProviderHal(Boolean keyMeans)

GnssLocationProvider.java -->private native void native_close_hal_server(boolean keyMeans);

com_android_server_location_GnssLocationProvider.cpp --> setHalServer(keyMeans);

Ignss.hal --> setHalServer(bool keyMeans);

Gnss.h --> Return<void> setHalServer(bool keyMeans) override;

Gnss.cpp -->Return<void> Gnss::setHalServer(bool keyMeans)

ubx_moduleIf.h --> static void setHalServer(bool keyMeans);

gps.h --> void (*set_hal_server)(bool keyMeans);

ubx_moduleIf.cpp --> const void *CGpsIf::setHalServer(bool keyMeans)

ubx_moduleIf.cpp --> CGpsIf::s_interface.set_hal_server= CGpsIf::setHalServer

JNI函数写法

JNI语法：

typedef struct {

const char* name;

const char* signature;

void* fnPtr;

} JNINativeMethod;

{"native_stop", "()Z", reinterpret_cast<void *>(

android_location_GnssLocationProvider_stop)},

 

"()" 中的字符表示参数，后面的则代表返回值。例如"()V" 就表示void Func();

"(II)V" 表示 void Func(int, int);如果Java函数的参数是class，则以"L"开头，以";"结尾中间是用"/" 隔开的包及类名。而其对应的C函数名的参数则为jobject. 一个例外是String类，其对应的类为jstring

 

 

报错1：IGNSS中未配置hash值

解决：在android/hardware/interfaces/current中添加 1391f5b8fea936e291bcf2a2836550237ef7e13384f9fd84dd64c4060d163779 android.hardware.gnss@1.0::IGnss

 

报错2：api无法编译（先加载根目录下环境再切换到android目录下更新会失败，需要在android目录下单独lunch，另起窗口）

解决：android/framework/api/current文件中的framework接口需要更新

先进入android目录下，加载编译环境

source build/envsetup.sh

Lunch

chery_t19c-userdebug

运行 make update-api

 

报错3：vndk无法编译（先加载根目录下环境再切换到android目录下更新会失败，需要在android目录下单独lunch，另起窗口）

解决：vndk接口需要更新

先进入android目录下，加载编译环境

source build/envsetup.sh

Lunch

chery_t19c-userdebug

development/vndk/tools/header-checker/utils/create_reference_dumps.py -l android.hardware.gnss@1.0 -product chery_t19c

development/vndk/tools/header-checker/utils/create_reference_dumps.py -l android.hardware.gnss@1.1 -product chery_t19c

development/vndk/tools/header-checker/utils/create_reference_dumps.py -l android.hardware.gnss@2.0 -product chery_t19c

 

 

新接口：

LocationManager.java --> public void setGnssHal(boolean isStop)

 

ILocationManager.aidl --> void setGnssHal(boolean isStop);

 

LocationManagerService.java -->public void setGnssHal(boolean isStop)

GnssLocationProvider mGlobalGnssProvider;

mGlobalGnssProvider = gnssProvider;

 

GnssLocationProvider.java -->setGnssProviderHal(Boolean keyMeans)

private native void native_close_hal_server(boolean keyMeans);

 

com_android_server_location_GnssLocationProvider.cpp --> setHalServer(keyMeans);

 

 

Ignss.hal --> setHalServer(bool keyMeans);

 

Gnss.h --> Return<void> setHalServer(bool keyMeans) override;

 

Gnss.cpp -->Return<void> Gnss::setHalServer(bool keyMeans)

 

gps.h --> void (*set_hal_server)(bool keyMeans);

 

ubx_moduleIf.h --> static void setHalServer(bool keyMeans);