main.cpp

00001 #include "mbed.h"
00002 
00003 Serial pc(USBTX, USBRX);
00004 
00005 int main() {
00006     
00007    pc.baud(921600); //set the baud rate to 921600
00008     float x2,y2;    //initializes variables
00009      AnalogIn an(p15); //creates an analog in on p15
00010     BusOut boom(LED1, LED2, LED3, LED4); // creates a bus that's outputs are the 4 LEDS on the mbed
00011     
00012     while(1)
00013     {
00014     x2=an.read();       //reads in the value of the input on p15 in range of 0.0 to 1.0 
00015     y2=x2*3.3;          //the voltage is max Voltage multiplied by the read in value. 
00016     printf("The analog data value is %f, and the associated voltage is %f\n",x2, y2);
00017     
00018     //if statements set the value of the bus based off the value read in from the analog
00019     //value boom is set to is based off of binary, a 1 sent to the LED turns it on.
00020     if(x2<=.2)
00021     boom=0;         //no LEDs are on
00022     
00023     if((x2>.2)&&(x2<=.4))
00024     boom=1;         // turns on one light
00025     
00026     
00027     if((x2>.4)&&(x2<=.6))
00028     boom=3;         //turns on two lights
00029     
00030     
00031     if((x2>.6)&&(x2<=.8))
00032     boom=7;         // turns on three lights
00033     
00034     if((x2>.8)&&(x2<=1.0))
00035     boom=15;        //turns on all four lights
00036     
00037     wait(.5);
00038     }
00039     
00040     
00041     
00042     
00043     
00044     }