File content as of revision 0:ab4dd338b42b:

#include "mbed.h"

Serial pc(USBTX, USBRX);

int main() {
    
   pc.baud(921600); //set the baud rate to 921600
    float x2,y2;    //initializes variables
     AnalogIn an(p15); //creates an analog in on p15
    BusOut boom(LED1, LED2, LED3, LED4); // creates a bus that's outputs are the 4 LEDS on the mbed
    
    while(1)
    {
    x2=an.read();       //reads in the value of the input on p15 in range of 0.0 to 1.0 
    y2=x2*3.3;          //the voltage is max Voltage multiplied by the read in value. 
    printf("The analog data value is %f, and the associated voltage is %f\n",x2, y2);
    
    //if statements set the value of the bus based off the value read in from the analog
    //value boom is set to is based off of binary, a 1 sent to the LED turns it on.
    if(x2<=.2)
    boom=0;         //no LEDs are on
    
    if((x2>.2)&&(x2<=.4))
    boom=1;         // turns on one light
    
    
    if((x2>.4)&&(x2<=.6))
    boom=3;         //turns on two lights
    
    
    if((x2>.6)&&(x2<=.8))
    boom=7;         // turns on three lights
    
    if((x2>.8)&&(x2<=1.0))
    boom=15;        //turns on all four lights
    
    wait(.5);
    }
    
    
    
    
    
    }