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diff --git a/arduino/libraries/Bluefruit52Lib/examples/Hardware/rtos_scheduler/rtos_scheduler.ino b/arduino/libraries/Bluefruit52Lib/examples/Hardware/rtos_scheduler/rtos_scheduler.ino
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+++ b/arduino/libraries/Bluefruit52Lib/examples/Hardware/rtos_scheduler/rtos_scheduler.ino
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+/*********************************************************************
+ This is an example for our nRF52 based Bluefruit LE modules
+
+ Pick one up today in the adafruit shop!
+
+ Adafruit invests time and resources providing this open source code,
+ please support Adafruit and open-source hardware by purchasing
+ products from Adafruit!
+
+ MIT license, check LICENSE for more information
+ All text above, and the splash screen below must be included in
+ any redistribution
+*********************************************************************/
+
+#include <Arduino.h>
+
+/*
+ * Sketch demonstate mutli-task using Scheduler. Demo create loop2() that
+ * run in 'parallel' with loop().
+ * - loop() toggle LED_RED every 1 second
+ * - loop2() toggle LED_BLUE every half of second
+ */
+
+void setup() 
+{
+  // LED_RED & LED_BLUE pin already initialized as an output.
+  
+  // Create loop2() using Scheduler to run in 'parallel' with loop()
+  Scheduler.startLoop(loop2);
+}
+
+/**
+ * Toggle led1 every 1 second
+ */
+void loop() 
+{
+  digitalToggle(LED_RED); // Toggle LED 
+  delay(1000);            // wait for a second
+}
+
+/**
+ * Toggle led1 every 0.5 second
+ */
+void loop2()
+{
+  digitalToggle(LED_BLUE); // Toggle LED 
+  delay(500);              // wait for a half second  
+}
+