I2C

I2C

I2C, Kernel Drivers

user@Minnowboard:~$ dmesg | grep -i i2c

** @ Linux Kernel Menuconfig > Device Driver > I2C Support **
Symbol: CONFIG_I2C [=y]
Prompt: I2C support

** @ Linux Kernel Menuconfig > Device Driver > I2C Support **
Symbol: CONFIG_I2C_BOARDINFO [=n]
<M>   ...

** @ Linux Kernel Menuconfig > Device Driver > I2C Support **
Symbol: CONFIG_I2C_HELPER_AUTO [=y]
<M>   ...

** @ Linux Kernel Menuconfig > Device Driver > I2C Support **
Symbol: CONFIG_I2C_ALGOBIT [=y]
Prompt: 

** @ Linux Kernel Menuconfig > Device Driver > I2C Support **
Symbol: CONFIG_I2C_CHARDEV [=y]
Prompt: I2C device interface

** @ Linux Kernel Menuconfig > Device Driver > I2C **
Symbol: CONFIG_DESIGNWARE_CORE [=m]
<M>   ...

** @ Linux Kernel Menuconfig > Device Driver > I2C **
Symbol: CONFIG_I2C_DESIGNWARE_PCI [=m]
<M>   ...

** @ Linux Kernel Menuconfig > Device Driver > I2C **
Symbol: CONFIG_I2C_DESIGNWARE_PLATFORM [=m]
<M>   ...

I2C, Modules Installation

root@minnowboard:~# apt-get install i2c-tools lm-sensors
root@Minnowboard:~# modprobe i2c-dev
root@Minnowboard:~# cat /sys/class/i2c-dev/
i2c-0  i2c-1  i2c-2  i2c-3  i2c-4  i2c-5  i2c-6  i2c-7  i2c-8
root@minnowboard:~# i2cdetect -y -r 0
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --

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