Diff: main.cpp

Revision:

2:4df3e4788aac

Parent:

1:d957f119593e

--- a/main.cpp	Tue Feb 28 20:23:16 2017 +0000
+++ b/main.cpp	Wed Mar 01 11:28:59 2017 +0000
@@ -1,6 +1,6 @@
 /* ELEC1620 Application Board Example
 
-Potentiometers
+Joystick
 
 (c) Dr Craig A. Evans, University of Leeds, Feb 2017
 
@@ -8,21 +8,24 @@
 
 #include "mbed.h"
 
-AnalogIn pot0(p20);
-AnalogIn pot1(p19);
-AnalogIn pot2(p17);
+// these pins are shared by the potentiometers
+AnalogIn  joy_v(p20);
+AnalogIn  joy_h(p19);
+AnalogIn joy_button(p17); // could be DigitalIn, but use AnalogIn so pot can also be used
 
 int main() {
     
     while(1) {
-        
-        float pot0_val = pot0.read();  // returns a float in the range 0.0 to 1.0
-        //float pot0_val = pot0;       // short-hand 
+
+        // read each of the pins              
+        float x = joy_h.read();
+        float y = joy_v.read();
+        float button = joy_button.read();
+                        
+        // print over serial 
+        printf("x = %.2f | y = %.2f | button = %.2f\n",x,y,button);
         
-        float pot0_voltage = pot0_val*3.3f;  // multiply by 3.3 to get the voltage
-                
-        printf("Pot 0 val = %.2f (%.2f V)\n",pot0_val,pot0_voltage);
-        
+        // small delay between readings
         wait(0.2);
         
     }