Use this code as a template for Question 1

Dependencies:   mbed

Revision:
0:bcf6fcde4f32
Child:
1:5f6d4748c3ff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Mar 28 07:33:30 2018 +0000
@@ -0,0 +1,36 @@
+#include "mbed.h"
+ 
+DigitalOut myled(LED1);
+//DigitalIn button1(USER_BUTTON);
+InterruptIn  button1(USER_BUTTON);
+ 
+bool active = false;
+ 
+void BUTTON_ISR(){
+    active = !active;
+}
+ 
+int main() {
+    // Set up
+    button1.mode(PullUp);
+    button1.fall(&BUTTON_ISR);
+    
+    while(1) {
+        if(active == true){
+            myled = 1; // LED is ON
+            wait(0.2); // 200 ms
+            myled = 0; // LED is OFF
+            wait(0.2);            
+            myled = 1; // LED is ON
+            wait(0.2); // 200 ms
+            myled = 0; // LED is OFF
+            wait(1.0); // 1 sec
+        }
+        else{
+            myled = 0;
+        }        
+        __wfi();    //Wait for interruptions
+    }
+}
+ 
+            
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