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en:c1_enhancement_gpio40 [2015/05/04 10:30] codewalker |
en:c1_enhancement_gpio40 [2016/03/29 10:38] (current) charles.park [Enhancement of 40pin GPIO] |
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| ====== Enhancement of 40pin GPIO ====== | ====== Enhancement of 40pin GPIO ====== | ||
| + | The **ODROID-C1/ODROID-C1+** provides 40Pin GPIOs. | ||
| + | |||
| + | **Easy to use GPIOs** \\ | ||
| + | First, you refer to below link. \\ | ||
| + | You check Export number that you want to use GPIO. \\ | ||
| + | [[en:c1_hardware&#expansion_connectors | Pin description]] | ||
| + | |||
| + | ** You need to enter into super-user mode first to run below commands !! ** | ||
| + | <code> sudo su </code> | ||
| + | |||
| + | Create a GPIO file access.\\ | ||
| + | You can access GPIOs using sysfs interface. This example uses pin number 18 which is connected to the GPIO102(GPIOX.BIT5). | ||
| + | echo 102 > /sys/class/gpio/export | ||
| + | Configure the pin direction for input | ||
| + | echo in > /sys/class/gpio/gpio102/direction | ||
| + | Configure the pin direction for output | ||
| + | echo out > /sys/class/gpio/gpio102/direction | ||
| + | Read a value (if gpio direction is input) | ||
| + | cat /sys/class/gpio/gpio102/value | ||
| + | Write a value (if gpio direction is output) | ||
| + | echo 1 > /sys/class/gpio/gpio102/value : gpio high | ||
| + | echo 0 > /sys/class/gpio/gpio102/value : gpio low | ||
| + | |||
| ===== I2C ===== | ===== I2C ===== | ||
| [[en:c1_hardware_i2c|I2C]] | [[en:c1_hardware_i2c|I2C]] | ||
