main.cpp

00001 #include "mbed.h"
00002 
00003 DigitalOut dout1(LED1);
00004 DigitalOut dout2(LED2);
00005 DigitalOut dout3(LED3);
00006 DigitalOut dout4(LED4);
00007 AnalogIn ain(p15);
00008 // The sinewave is created on this pin
00009 AnalogOut aout(p18);
00010 
00011 int main()
00012 {
00013     const double pi = 3.141592653589793238462;
00014     const double amplitude = 0.5f;
00015     const double offset = 65535/2;
00016     double rads = 0.0;
00017     uint16_t sample = 0;
00018     
00019     while(1) {
00020         // sinewave output
00021         for (int i = 0; i < 360; i++) {
00022             rads = (pi * i) / 180.0f;
00023             sample = (uint16_t)(amplitude * (offset * (cos(rads + pi))) + offset);
00024             aout.write_u16(sample);
00025         }
00026         
00027         //Sharp IR sensor display
00028         if (ain.read() > 0.9f) //less than 7 cm
00029         {
00030             dout1 = 1;
00031             dout2 = 1;
00032             dout3 = 1;
00033             dout4 = 1;
00034         }
00035         else if (ain.read() > 0.68f && ain.read() <= 0.9f) //7-10
00036         {
00037             dout1 = 0;
00038             dout2 = 1;
00039             dout3 = 1;
00040             dout4 = 1;
00041         }
00042         else if (ain.read() > 0.53f && ain.read() <= 0.68f) //10-13
00043         {
00044             dout1 = 0;
00045             dout2 = 0;
00046             dout3 = 1;
00047             dout4 = 1;
00048         }
00049         else if (ain.read() > 0.45f && ain.read() <= 0.53f) //13-17
00050         {
00051             dout1 = 0;
00052             dout2 = 0;
00053             dout3 = 0;
00054             dout4 = 1;
00055         }
00056         else //greater than 17
00057         {
00058             
00059             dout1 = 0;
00060             dout2 = 0;
00061             dout3 = 0;
00062             dout4 = 0;
00063         }
00064     }
00065 }