Raspberry Pi function

The default i²c is off, with the Raspi-config command, a configuration block will pop up

Select Enable I²c.

After reboot

There are no i2c-x devices found in the/dev/directory, this time you need to do the following

1. Add I²c Module
sudo nano/etc/modules
Then add the following two lines of content
i2c-bcm2708
I2c-dev

In the second reboot, you can see it.

2. Install the I²c tool to view the I²C device
sudo apt-get install I2c-tools

Provides the following I²c tool commands, such as I2cdetect,i2cget,i2cset.

3. Execute commands to view i²c devices
sudo i2cdetect-y-a 0
Note If the 512M version, please change "0" to "1", 0, 1, the device number of i²c, general use 1

Reference link http://www.eeboard.com/bbs/forum.php?mod=viewthread&tid=5617&page=1

Raspberry Pi function