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en:c1_enhancement_gpio40 [2016/03/29 10:23] odroid |
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-C2** provides 40Pin GPIOs. | + | The **ODROID-C1/ODROID-C1+** provides 40Pin GPIOs. |
| **Easy to use GPIOs** \\ | **Easy to use GPIOs** \\ | ||
| First, you refer to below link. \\ | First, you refer to below link. \\ | ||
| You check Export number that you want to use GPIO. \\ | You check Export number that you want to use GPIO. \\ | ||
| - | [[en:c2_hardware&#expansion_connectors | Pin description]] | + | [[en:c1_hardware&#expansion_connectors | Pin description]] |
| ** You need to enter into super-user mode first to run below commands !! ** | ** You need to enter into super-user mode first to run below commands !! ** | ||
| Line 11: | Line 11: | ||
| Create a GPIO file access.\\ | Create a GPIO file access.\\ | ||
| - | 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 GPIO102(GPIOX.BIT5). |
| - | echo 233 > /sys/class/gpio/export | + | echo 102 > /sys/class/gpio/export |
| Configure the pin direction for input | Configure the pin direction for input | ||
| - | echo in > /sys/class/gpio/gpio233/direction | + | echo in > /sys/class/gpio/gpio102/direction |
| Configure the pin direction for output | Configure the pin direction for output | ||
| - | echo out > /sys/class/gpio/gpio233/direction | + | echo out > /sys/class/gpio/gpio102/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/gpio102/value |
| Write a value (if gpio direction is output) | Write a value (if gpio direction is output) | ||
| - | echo 1 > /sys/class/gpio/gpio233/value : gpio high | + | echo 1 > /sys/class/gpio/gpio102/value : gpio high |
| - | echo 0 > /sys/class/gpio/gpio233/value : gpio low | + | echo 0 > /sys/class/gpio/gpio102/value : gpio low |
| ===== I2C ===== | ===== I2C ===== | ||
