Diff: main.cpp

Revision:

3:041d6aaa4a7b

Parent:

2:e53dfe50252a

Child:

4:0ed7a3594910

--- a/main.cpp	Thu Jan 17 19:57:50 2019 +0000
+++ b/main.cpp	Sat Jan 19 19:49:17 2019 +0000
@@ -2,7 +2,7 @@
     Project: SerialEcho
     File: main.cpp
     Created by: Dr. C. S. Tritt
-    Last revised: 1/17/19
+    Last revised: 1/17/19 (v. 1.0)
     
     Receives serial data from PC to and echos it back, character for character.
     
@@ -15,16 +15,15 @@
 
 Serial pc(USBTX, USBRX, 9600); // Standard to PC via USB channel.
 
-DigitalOut actLED(LED1); // Activity toggle.
+DigitalOut actLED(LED1); // Activity LED.
 
 int main()
 {
     while (true) {
         if (pc.readable()) {
-            char character = (char) pc.getc();
-            //pc.putc(character);
-            pc.putc(character);
-            actLED = !actLED;
+            char character = (char) pc.getc(); // Get a char from the PC.
+            pc.putc(character); // Send it back to the PC.
+            actLED = !actLED; // Toggle the activity LED.
         }
     }
 }
\ No newline at end of file