一，下载源码
cd hardware/libhardware/tests
git clone https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git
二， 在 i2c-tools 目录添加 Android.mk 编译文件
LOCAL_PATH:= $(call my-dir)################### i2c-tools #########################
include $(CLEAR_VARS)LOCAL_MODULE := i2c-toolsLOCAL_SRC_FILES := \tools/i2cbusses.c \tools/util.c \lib/smbus.cLOCAL_C_INCLUDES += \$(LOCAL_PATH) \$(LOCAL_PATH)/include#LOCAL_CFLAGS := -g -Wall -Werror -Wno-unused-parameter
include $(BUILD_STATIC_LIBRARY)################### i2cdetect #########################
include $(CLEAR_VARS)LOCAL_MODULE:=i2cdetectLOCAL_SRC_FILES:= \tools/i2cdetect.cLOCAL_C_INCLUDES += \$(LOCAL_PATH) \$(LOCAL_PATH)/includeLOCAL_SHARED_LIBRARIES:= \libc
LOCAL_STATIC_LIBRARIES := \i2c-toolsLOCAL_CPPFLAGS += -DANDROIDinclude $(BUILD_EXECUTABLE)#################### i2cget ###########################
include $(CLEAR_VARS)LOCAL_MODULE:=i2cgetLOCAL_SRC_FILES:= \tools/i2cget.cLOCAL_C_INCLUDES += \$(LOCAL_PATH) \$(LOCAL_PATH)/includeLOCAL_SHARED_LIBRARIES:= \libc
LOCAL_STATIC_LIBRARIES := \i2c-toolsLOCAL_CPPFLAGS += -DANDROIDinclude $(BUILD_EXECUTABLE)##################### i2cset ##########################
include $(CLEAR_VARS)LOCAL_MODULE:=i2csetLOCAL_SRC_FILES:= \tools/i2cset.cLOCAL_C_INCLUDES += \$(LOCAL_PATH) \$(LOCAL_PATH)/includeLOCAL_SHARED_LIBRARIES:= \libc
LOCAL_STATIC_LIBRARIES := \i2c-toolsLOCAL_CPPFLAGS += -DANDROIDinclude $(BUILD_EXECUTABLE)##################### i2cdump #########################
include $(CLEAR_VARS)LOCAL_MODULE:=i2cdumpLOCAL_SRC_FILES:= \tools/i2cdump.cLOCAL_C_INCLUDES += \$(LOCAL_PATH) \$(LOCAL_PATH)/includeLOCAL_SHARED_LIBRARIES:= \libc
LOCAL_STATIC_LIBRARIES := \i2c-toolsLOCAL_CPPFLAGS += -DANDROIDinclude $(BUILD_EXECUTABLE)################### i2ctransfer #######################
include $(CLEAR_VARS)LOCAL_MODULE:=i2ctransferLOCAL_SRC_FILES:= \tools/i2ctransfer.cLOCAL_C_INCLUDES += \$(LOCAL_PATH) \$(LOCAL_PATH)/includeLOCAL_SHARED_LIBRARIES:= \libc
LOCAL_STATIC_LIBRARIES := \i2c-toolsLOCAL_CPPFLAGS += -DANDROIDinclude $(BUILD_EXECUTABLE)
三， 在上面目录增加编译链接
四，编译生成工具软件
