Diff: main.cpp

Revision:

0:7931706dde3d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Sep 17 12:37:43 2017 +0000
@@ -0,0 +1,42 @@
+/*
+Project: WhatTime
+File: main.cpp
+ 
+Uses a timer to display the interval between button press and release.
+ 
+Created 12 Aug 2017 by Sheila Ross
+Last modified 9/17/17 by C. S. Tritt
+*/
+#include "mbed.h"
+ 
+// Construct a USER_BUTTON digital input.
+DigitalIn myButton(USER_BUTTON);
+ 
+// Construct a timer object.
+Timer myTimer;
+ 
+// Construct a transmit only serial connection over our USB.
+Serial pc(USBTX, NC, 9600);
+ 
+ 
+int main()
+{
+    myTimer.start();  // Start the timer.
+ 
+    while(true) { // Main loop.
+        if (myButton == 0) { // Button is pressed (active low).
+            // Save the time on timer.
+            float current_time = myTimer.read();
+                     
+            // Send the time as text via the serial port.
+            pc.printf("Time difference %f seconds.\n",current_time );
+            
+             // Reset the timer.
+            myTimer.reset();
+                     
+            // Wait for the user to release the button.
+            while(myButton == 0) {
+            }
+        }
+    }
+}
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