Diff: main.cpp

Revision:

0:40f06a589018

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Sep 14 13:09:45 2017 +0000
@@ -0,0 +1,93 @@
+// Elec143 Morsecode labwork
+//
+// Suggested solution using functions
+// Chris Tipney September 2017
+//
+// Morse code
+// dot = 150 ms
+// dash = 450 ms
+// symbol space = 150 ms
+// letter space = 450 ms
+// word space = 900 ms
+//
+// Note
+// Every symbol is followed by at least 150 ms
+// only the space beyond that varies according
+// to context
+
+#include "mbed.h"
+
+// function prototypes
+void sierra(int r);     // output the pattern for the letter 'S' repeat according to value of r
+void oscar(int r);      // output the pattern for the letter 'O' repeat according to value of r
+void dot(int r);        // output a short flash followed by 150 ms space repeat according to value of r
+void dash(int r);       // output a long flash followed by 150 ms space repeat according to value of r
+void letterspace();     // output 300 ms space to make up the rest of the letter space 450 ms
+void wordspace();       // output 750 ms space to make up the rest of the word space 900 ms
+
+// led attached to port D7
+DigitalOut myled(D7);
+
+int main() 
+{
+    while(1)                // loop forever
+    {
+        sierra(1);          // S
+        oscar(1);           // O
+        sierra(1);          // S
+        wordspace();
+    }
+}
+
+// function implementations
+
+void sierra(int rep)
+{
+    for (int i = 0; i < rep; i++)
+    {
+        dot(3);
+        letterspace();
+    }
+}
+
+void oscar(int rep)
+{
+        for (int i = 0; i < rep; i++)
+    {
+        dash(3);
+        letterspace();
+    }
+}
+
+
+void dot(int rep)
+{
+    for (int i = 0; i < rep; i++)
+    {
+        myled = 1;
+        wait(0.150);
+        myled = 0;
+        wait(0.150);
+    }
+}
+
+void dash(int rep)
+{
+    for (int i = 0; i < rep; i++)
+    {
+        myled = 1;
+        wait(0.450);
+        myled = 0;
+        wait(0.150);
+    }
+}
+
+void wordspace()
+{
+    wait(.750);
+}
+
+void letterspace()
+{
+    wait(.300);
+}