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| Both sides previous revision Previous revision Next revision | Previous revision Last revision Both sides next revision | ||
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en:c1_enhancement_gpio40 [2016/03/08 16:38] charles.park |
en:c1_enhancement_gpio40 [2016/03/29 10:23] odroid |
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| Create a GPIO file access.\\ | Create a GPIO file access.\\ | ||
| - | You can access GPIOs using sysfs interface. | + | You can access GPIOs using sysfs interface. This example uses pin number 18 which is connected to the GPIO233(GPIOX.BIT5). |
| echo 233 > /sys/class/gpio/export | echo 233 > /sys/class/gpio/export | ||
| - | Configure the pin direction (in/out) | + | Configure the pin direction for input |
| - | echo in > /sys/class/gpio/gpio29/direction : gpio direction input | + | echo in > /sys/class/gpio/gpio233/direction |
| - | echo out > /sys/class/gpio/gpio29/direction : gpio direction output | + | Configure the pin direction for output |
| + | echo out > /sys/class/gpio/gpio233/direction | ||
| Read a value (if gpio direction is input) | Read a value (if gpio direction is input) | ||
| cat /sys/class/gpio/gpio233/value | cat /sys/class/gpio/gpio233/value | ||
