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How to enable I2C funcion on Raspbian:
Please run the following command after you start the Raspberry Pi
sudo raspi-config
Select "Finish" to return to the command line and reboot your raspberry pi.
sudo reboot
The Raspberry Pi will reboot and the 'i2c' interface will be enabled.
Then run the following command to check i2c port
sudo i2cdetect -y 1
The following is the I2C address of [[X729]]
<pre>
pi@raspberrypi:~ $ sudo i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- 36 -- -- -- -- -- 3c -- -- --
40: 40 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
</pre>
<pre>
#36 - the address of the battery fuel gauging chip
#3c - OLED display
#40 - TI INA219 12-bit current/voltage/power monitor
#68 - the address of the RTC chip
</pre>
PS: Different hardware products may have different I2C addresses
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[[Category:Raspberry pi]]
[[Category:Knowledge]]