1 files changed, 9 insertions, 0 deletions
diff --git a/rootfs/bin/helloled b/rootfs/bin/helloled
new file mode 100755
index 0000000..877faab
--- /dev/null
+++ b/rootfs/bin/helloled
@@ -0,0 +1,9 @@
+#!/bin/sh
+BRIGHTNESS=0
+while true ; do
+	BRIGHTNESS=$(( ( $BRIGHTNESS + 1 ) % 2 ))
+	for i in $(seq 0 3) ; do
+		echo $BRIGHTNESS > "/sys/class/leds/beaglebone:green:usr$i/brightness"
+	done
+	sleep 0.5
+done