Diff: main.cpp

Revision:

0:aeb4b85ccd83

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Sep 04 03:05:20 2014 +0000
@@ -0,0 +1,53 @@
+
+#include "mbed.h"
+//Lab 2, part 2
+
+//code given by professor
+Serial pc(USBTX, USBRX);
+
+//Establish analog input on pin 20, called ain
+AnalogIn ain1(p20); 
+//create BusOut on MBED leds
+BusOut leds(LED1, LED2, LED3, LED4);
+//create float variable to store the analog voltage
+float signal1 = 0.0;
+
+int main()
+    {//begin main
+    
+        while(1)
+        {
+            //set computer sampling rate
+        pc.baud(921600);
+        //store the input analog voltage in the variable signal1
+        signal1 = ain1;
+        
+        if (signal1<=0.2)
+        {//if the analog input is less than 0.2, turn all the lights off
+            leds=0;  
+        }
+        
+        if((signal1>0.2) && (signal1<=0.4))
+        {//if the analog input is between 0.2 and 0.4, turn on only LED1
+            leds=1;   
+        }
+        
+        if((signal1>0.4) && (signal1<=0.6))
+        {//if the analog input is between 0.4 and 0.6, turn on LED1 and LED2
+            leds=3;   
+        }
+        if((signal1>0.6) && (signal1<=0.8))
+        {//if the analog input is between 0.6 and 0.8, turn on all lights, but LED4
+            leds=7;   
+        }
+        if((signal1>0.8) && (signal1<=1.0))
+        {//if the analog input is between 0.8 and 1.0, turn on all lights
+            leds=15;   
+        }
+        //print the input voltage to the Tera Term window, so we can double check the lights are turning on when they're supposed to
+        printf("%f\n", signal1);
+        //wait 0.5 seconds before running the loop again. Keeps the Tera Term window readable. 
+        wait(0.5);
+        }
+    
+    }//end main
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