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en:c1_enhancement_gpio40 [2016/03/08 16:49] odroid [Enhancement of 40pin GPIO] |
en:c1_enhancement_gpio40 [2016/03/08 16:50] odroid [Enhancement of 40pin GPIO] |
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| You can access GPIOs using sysfs interface. This example uses pin number 18 which is connected to the GPIO233(GPIOX.BIT5). | 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/gpio233/direction : gpio direction input | echo in > /sys/class/gpio/gpio233/direction : gpio direction input | ||
| + | Configure the pin direction for output | ||
| echo out > /sys/class/gpio/gpio233/direction : gpio direction output | echo out > /sys/class/gpio/gpio233/direction : gpio direction output | ||
| Read a value (if gpio direction is input) | Read a value (if gpio direction is input) | ||
