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--- en:xu3_enhancement_gpio30 [2015/08/28 11:16]
odroid
+++ en:xu3_enhancement_gpio30 [2015/08/28 11:20] (current)
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@@ Line 1: / Line 1: @@
+====== Basics of 30pin Port ======
+The **ODROID-XU3** provides 30Pin GPIOs.
+{{http://dn.odroid.com/homebackup/201310211158488480.jpg}}
+** You need to enter into super-user mode first to run below commands !! **\\
+<code> sudo su </code>
+\\ \\ \\
+**Easy to use GPIOs**\\
+First, you refer to below link.\\
+You check Export number that you want to use GPIO.\\
+[[en:xu3_hardware&#expansion_connectors | Pin description]]
+Create a GPIO file access.\\
+You can access GPIOs using sysfs interface.
+  echo 29 > /sys/class/gpio/export
+Configure the pin direction (in/out)
+  echo in > /sys/class/gpio/gpio29/direction
+Read a value
+  cat /sys/class/gpio/gpio29/value
+{{http://dn.odroid.com/homebackup/201310211155385344.jpg}}\\
+[[http://www.hardkernel.com/main/products/prdt_info.php?g_code=G138232136481|Expansion Board]]
+** LED ON/OFF example **\\
+If you want to use LED ON/OFF, first you check the NET name in Expansion Board.\\
+For example, The NET name of D1 is INT23.\\
+According to below link, The Export GPIO number is #31.\\
+[[en:xu3_hardware&#expansion_connectors | Pin description]]
+  echo 31 > /sys/class/gpio/export
+  echo out > /sys/class/gpio/gpio31/direction
+LED ON
+  echo 1 > /sys/class/gpio/gpio31/value
+LED OFF
+  echo 0 > /sys/class/gpio/gpio31/value