Diff: main.cpp

Revision:

3:8d07dbdd3afc

Parent:

2:2cc5d274f30d

Child:

4:f1782bdd08a8

--- a/main.cpp	Fri Oct 21 13:33:35 2016 +0000
+++ b/main.cpp	Mon Oct 24 08:22:45 2016 +0000
@@ -16,28 +16,28 @@
     
     while (true) {
         
-        if (pc.readable()) {
-            Key = pc.getc();
+        if (pc.readable()) {                    // if a key press happens
+            Key = pc.getc();                    // get the pressed key
             switch(Key) {                         //Check to see which key pressed
-                case 0x41:                        //It was the UP Key key...
-                    pc.printf("\n\r UP!");
+                case 0xBB:                        //It was the + key...
+                    pc.printf("\n\r +!");
                     if( ServoAngle < 80){
-                        ServoAngle = ServoAngle+10;
+                        ServoAngle = ServoAngle+10;     // increase the angle
                     }
                     break;
-                case 0x42:                        //It was the DOWN Key key...
-                    pc.printf("\n\r DOWN!");
+                case 0xBD:                        //It was the - Key key...
+                    pc.printf("\n\r -!");
                     if( ServoAngle > 1){
-                        ServoAngle = ServoAngle-10;
+                        ServoAngle = ServoAngle-10;     // decrease the angle
                     }
                     break;
                 case 0x20:                        //It was the Spacebar key...
                     pc.printf("\n\r SPACE!");
                     if( ServoAngle < 45){        // Switch from open to closed or else otherwise
-                        ServoAngle = 89;
+                        ServoAngle = 89;        // open/close 
                     }
                     else{
-                        ServoAngle = 1;
+                        ServoAngle = 1;         // open/close 
                     }
                     break;
             }
@@ -45,8 +45,8 @@
             wait(1/Frequency);
         }
 
-        Pulsew = 0.0015+(ServoAngle)/180000;
-        ServoPWMpin.pulsewidth(Pulsew);      // write the dutycycle
+        Pulsew = 0.0015+(ServoAngle)/180000;    // calculate the pulsewidth in the range 1 to 2 milliseconds
+        ServoPWMpin.pulsewidth(Pulsew);         // write the pulsewidth
         pc.printf("\n\r Pulsew is %f",Pulsew);
     }
 }
\ No newline at end of file