From 91e27c051bebc554fbd5ad5f86047733d73f3817 Mon Sep 17 00:00:00 2001
From: Calin Crisan <ccrisan@gmail.com>
Date: Thu, 11 May 2017 20:06:44 +0300
Subject: [PATCH] add gpio.sh handy bash command

---
 board/common/overlay/usr/bin/gpio.sh | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100755 board/common/overlay/usr/bin/gpio.sh

diff --git a/board/common/overlay/usr/bin/gpio.sh b/board/common/overlay/usr/bin/gpio.sh
new file mode 100755
index 0000000000..c291e7c6c8
--- /dev/null
+++ b/board/common/overlay/usr/bin/gpio.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+
+GPIO=$1
+
+usage() {
+    echo "Usage: $0 <gpio> [0|1]" 1>&2
+    exit 1
+}
+
+test -z "$GPIO" && usage
+test -e /sys/class/gpio/gpio$GPIO || echo $GPIO > /sys/class/gpio/export
+
+if [ -n "$2" ]; then
+    echo out > /sys/class/gpio/gpio$GPIO/direction
+    echo $2 > /sys/class/gpio/gpio$GPIO/value
+else
+    echo in > /sys/class/gpio/gpio$GPIO/direction
+    cat /sys/class/gpio/gpio$GPIO/value
+fi
+