# source build/envsetup.sh
# lunch
# make hidl-gen -j4
一、server端
1.建立INaruto.hal檔案
# cd hardware
# mkdir -p ~/android/hardware/interfaces/naruto/1.0/default 
# cd hardware/interfaces/naruto/1.0
# emacs INaruto.hal
package [email protected];

interface INaruto {
    helloWorld(string name) generates (string result);
};

2.使用hidl-gen工具編譯INaruto.hal自動生成.mk,.bp,.cpp檔案
# cd ~/android
# 
 
[email protected]
# LOC=hardware/interfaces/naruto/1.0/default/
# make hidl-gen -j16
# hidl-gen -o $LOC -Lc++-impl -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport $PACKAGE
# hidl-gen -o $LOC -Landroidbp-impl -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport $PACKAGE
在default下生成Android.bp，Naruto.cpp，Naruto.h檔案
# ./hardware/interfaces/update-makefiles.sh
在1.0目錄下生成Android.bp，Android.mk檔案

# touch hardware/interfaces/naruto/1.0/default/
 
[email protected]
# touch hardware/interfaces/naruto/1.0/default/service.cpp


3.修改原始碼，然後編譯自動生成檔案
# mmm hardware/interfaces/naruto/1.0/default/

4.啟動server端程序
# emacs hardware/interfaces/naruto/1.0/default/[email protected]
service naruto_hal_service /vendor/bin/hw/[email protected]
    class hal
    user system
    group system

5.server端程序原始碼
# emacs hardware/interfaces/naruto/1.0/default/service.cpp
#define LOG_TAG "
 
[email protected]"
#include <android/hardware/naruto/1.0/INaruto.h>
#include <hidl/LegacySupport.h>

using android::hardware::naruto::V1_0::INaruto;
using android::hardware::defaultPassthroughServiceImplementation;

int main() {
    return defaultPassthroughServiceImplementation<INaruto>();
}

6.編譯server端程式碼
# mmm hardware/interfaces/naruto/1.0/default

7.編譯vendor.img,刷機
# make vendorimage -j16

二、client端

1.測試程式碼: naruto_test
# emacs test.cpp
#include <android/hardware/naruto/1.0/INaruto.h>
#include <hidl/Status.h>
#include <hidl/LegacySupport.h>
#include <utils/misc.h>
#include <hidl/HidlSupport.h>
#include <stdio.h>

using android::hardware::naruto::V1_0::INaruto;
using android::sp;
using android::hardware::hidl_string;

int main()
{
    int ret;

    android::sp<INaruto> service = INaruto::getService();
    if(service == nullptr) {
        printf("Failed to get service\n");
        return -1;
    }

    service->helloWorld("JayZhang", [&](hidl_string result) {
                printf("%s\n", result.c_str());
        });

    return 0;
}

2.Android.mk
LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
LOCAL_PROPRIETARY_MODULE := true
LOCAL_MODULE := naruto_test
LOCAL_SRC_FILES := \
    client.cpp \

LOCAL_SHARED_LIBRARIES := \
   liblog \
   libhidlbase \
   libutils \
   [email protected] \

include $(BUILD_EXECUTABLE)

3.在manifest檔案裡新增vendor介面的定義，不然在client端是沒法拿到service的，在相應的manifest.xml裡面加入
# emacs manifest.xml 
…
…
<hal format="hidl">
    <name>android.hardware.naruto</name>
    <transport>hwbinder</transport>
    <version>1.0</version>
    <interface>
        <name>INaruto</name>
        <instance>default</instance>
    </interface>
</hal>

# adb push manifest.xml /vendor


三、燒寫vendor.img測試
# adb shell
# /vendor/bin/hw/[email protected]

# ./naruto_test