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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 16:34] charles.park |
en:c1_enhancement_gpio40 [2016/03/29 10:23] odroid |
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| The **ODROID-C2** provides 40Pin GPIOs. | The **ODROID-C2** provides 40Pin GPIOs. | ||
| - | ** You need to enter into super-user mode first to run below commands !! **\\ | + | **Easy to use GPIOs** \\ |
| - | <code> sudo su </code> | + | First, you refer to below link. \\ |
| - | \\ \\ \\ | + | You check Export number that you want to use GPIO. \\ |
| + | [[en:c2_hardware&#expansion_connectors | Pin description]] | ||
| - | **Easy to use GPIOs**\\ | + | ** You need to enter into super-user mode first to run below commands !! ** |
| - | First, you refer to below link.\\ | + | <code> sudo su </code> |
| - | You check Export number that you want to use GPIO.\\ | + | |
| - | [[en:xu3_hardware&#expansion_connectors | Pin description]] | + | |
| 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 | ||
