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en:u3_ioport_i2c [2015/05/09 13:32]
en:u3_ioport_i2c [2015/05/09 20:48] (current)
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 +====== I2C interface using the GPIO pins ======
 +This page introduces how you can I2C interface using GPIO pins.\\
 +**Note the GPIO-I2C support 1.8 Volt interface like other IO ports on Exynos processor.**\\
 +**J4 - 2x4 pins(IO Port #1)**
 +^ Pin Number ^ Expansion Net Name ^ Export Number ^ Pin Number ^ Expansion Net Name ^ Export Number ^
 +|1|XEINT_8 (GPX1.0)| #199 |2|1.8V Power| |
 +|3|XEINT_9 (GPX1.1)| #200 |4|XURXD_0 (UART_0_RXD)| /​dev/​ttySAC0 | 
 +|5|XEINT_13 (GPX1.5)| #204 |6|XUTXD_0 (UART_0_TXD)| /​dev/​ttySAC0 |
 +|7|Ground| |8|5V0 Power| |
 +<WRAP left round tip 100%>
 +If your ODROID-U3 have old version kernel you need to update using odroid-utility.
 +  sudo odroid-utility.sh
 +First, You will update the apt-get to install i2c-tools on your **ODROID-U3**.
 +  sudo apt-get update
 +  sudo apt-get install i2c-tools
 +Then, You can see i2c devices with i2cdetec command.
 +  sudo modprobe i2c-dev
 +  sudo i2cdetect -l
 +To use GPIO-I2C you need to load i2c-gpio-custom device driver module.\\
 +Usage : i2c-gpio-custom bus[0..3]=I2CBUS,​SDA,​SCL
 +  sudo modprobe i2c-gpio-custom bus0=4,​200,​199
 +  sudo i2cdetect -l
en/u3_ioport_i2c.txt ยท Last modified: 2015/05/09 20:48 by odroid
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