Diff: main.cpp

Revision:

0:ef9a01d503ba

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Mar 09 21:43:18 2017 +0000
@@ -0,0 +1,33 @@
+/* Program Example 9.5: Tests Timer duration, displaying current time values to terminal
+*/
+#include "mbed.h"
+Timer t;
+float s=0; //seconds cumulative count
+float m=0; //minutes cumulative count
+DigitalOut diag(LED1);
+Serial pc(USBTX, USBRX);
+int main()
+{
+    pc.printf("\r\nTimer Duration Test\n\r");
+    pc.printf("-------------------\n\n\r");
+    t.reset(); //reset Timer
+    t.start(); // start Timer
+    while(1) {
+        if (t.read()>=(s+1)) { //has Timer passed next whole second?
+            diag = 1; //If yes, flash LED and print a message
+            wait (0.05);
+            diag = 0;
+            s++ ;
+//print the number of seconds exceeding whole minutes
+            pc.printf("%1.0f seconds\r\n",(s-60*(m-1)));
+        }
+        if (t.read()>=60*m) {
+            printf("%1.0f minutes \n\r",m);
+            m++ ;
+        }
+        if (t.read()<s) { //test for overflow
+            pc.printf("\r\nTimer has overflowed!\n\r");
+            for(;;) {} //lock into an endless loop doing nothing
+        }
+    } //end of while
+}
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