I2c-tools工具使用及調試

1. 下載iic-tools

https://mirrors.edge.kernel.org/pub/software/utils/i2c-tools/

注意：這裏我們下載3.1.1版本的。i2c-tools-3.1.1.tar.gz

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

2. 編譯：

將下載好的i2c-tools-3.1.1.tar.gz放到Android工程的external目錄下，並解壓。

編寫編譯腳本Android.mk放於解壓後的external/i2c-tools-3.1.1這個目錄下，文件內容如下：

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環境下編譯可執行文件：

souce buile/envsetup.sh

lunch 選擇對應的環境

cd /external/i2c-tools-3.1.1/

i2c-tools工具編譯：

mm -j9

編譯成功後可以看到生成的文件的路徑，如：

使用，將編譯生成的四個可執行文件push到Android設備中：如/i2c/目錄下：

<<i2cget>>

<<i2cdump>>

<<i2cdetect>>

<<i2cset>>

執行命令查看或設置i2c。

如：./i2cdetect -l 查看所有可用的i2c總線

 

./i2cdetect -y 1  查看i2c-1總線下的設備

 

0x13是我掛在i2c1下面的一個設備