I2c-tools工具使用及调试

迈不过友情╰ 2023-07-01 08:52 0阅读 0赞

# 1. 下载iic-tools #

[https://mirrors.edge.kernel.org/pub/software/utils/i2c-tools/][https_mirrors.edge.kernel.org_pub_software_utils_i2c-tools]

**注意：这里我们下载3.1.1版本的。i2c-tools-3.1.1.tar.gz**

<<i2c-tools-3.1.1.tar.gz>>

# 2. 编译： #

将下载好的i2c-tools-3.1.1.tar.gz放到Android工程的external目录下，并解压。

编写编译脚本Android.mk放于解压后的external/i2c-tools-3.1.1这个目录下，文件内容如下：

LOCAL_PATH:= $(call my-dir)
    include $(CLEAR_VARS)
    LOCAL_MODULE_TAGS := optional
    LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH) $(LOCAL_PATH)/$(KERNEL_DIR)/include
    LOCAL_SRC_FILES := tools/i2cbusses.c tools/util.c
    LOCAL_MODULE := i2c-tools
    include $(BUILD_STATIC_LIBRARY)
    include $(CLEAR_VARS)
    LOCAL_MODULE_TAGS := optional
    LOCAL_SRC_FILES:=tools/i2cdetect.c
    LOCAL_MODULE:=i2cdetect
    LOCAL_CPPFLAGS += -DANDROID
    LOCAL_SHARED_LIBRARIES:=libc
    LOCAL_STATIC_LIBRARIES := i2c-tools
    LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH) $(LOCAL_PATH)/$(KERNEL_DIR)/include
    include $(BUILD_EXECUTABLE)
    include $(CLEAR_VARS)
    LOCAL_MODULE_TAGS := optional
    LOCAL_SRC_FILES:=tools/i2cget.c
    LOCAL_MODULE:=i2cget
    LOCAL_CPPFLAGS += -DANDROID
    LOCAL_SHARED_LIBRARIES:=libc
    LOCAL_STATIC_LIBRARIES := i2c-tools
    LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH) $(LOCAL_PATH)/$(KERNEL_DIR)/include
    include $(BUILD_EXECUTABLE)
    include $(CLEAR_VARS)
    LOCAL_MODULE_TAGS := optional
    LOCAL_SRC_FILES:=tools/i2cset.c
    LOCAL_MODULE:=i2cset
    LOCAL_CPPFLAGS += -DANDROID
    LOCAL_SHARED_LIBRARIES:=libc
    LOCAL_STATIC_LIBRARIES := i2c-tools
    LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH) $(LOCAL_PATH)/$(KERNEL_DIR)/include
    include $(BUILD_EXECUTABLE)
    include $(CLEAR_VARS)
    LOCAL_MODULE_TAGS := optional
    LOCAL_SRC_FILES:=tools/i2cdump.c
    LOCAL_MODULE:=i2cdump
    LOCAL_CPPFLAGS += -DANDROID
    LOCAL_SHARED_LIBRARIES:=libc
    LOCAL_STATIC_LIBRARIES := i2c-tools
    LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH) $(LOCAL_PATH)/$(KERNEL_DIR)/include
    include $(BUILD_EXECUTABLE)

Android环境下编译可执行文件：

souce buile/envsetup.sh

lunch 选择对应的环境

cd /external/i2c-tools-3.1.1/

i2c-tools工具编译：

**mm -j9**

编译成功后可以看到生成的文件的路径，如：

![20200120175820357.png][]

使用，将编译生成的四个可执行文件push到Android设备中：如/i2c/目录下：

<<i2cget>>

<<i2cdump>>

<<i2cdetect>>

<<i2cset>>

![20200120175932565.png][]

执行命令查看或设置i2c。

如：./i2cdetect -l 查看所有可用的i2c总线

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzI5ODkxMzUz_size_16_color_FFFFFF_t_70][]

./i2cdetect -y 1 查看i2c-1总线下的设备

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzI5ODkxMzUz_size_16_color_FFFFFF_t_70 1][]

0x13是我挂在i2c1下面的一个设备

[https_mirrors.edge.kernel.org_pub_software_utils_i2c-tools]: https://mirrors.edge.kernel.org/pub/software/utils/i2c-tools/
[20200120175820357.png]: https://img-blog.csdnimg.cn/20200120175820357.png
[20200120175932565.png]: https://img-blog.csdnimg.cn/20200120175932565.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzI5ODkxMzUz_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200120180005316.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzI5ODkxMzUz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzI5ODkxMzUz_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200120180006914.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzI5ODkxMzUz,size_16,color_FFFFFF,t_70