main.cpp

00001 //This is known as a “header file”
00002 //In short, this copies and pastes the text file
00003 //mbed.h into this code
00004 #include "mbed.h"
00005 
00006 #define kRED    1  
00007 #define kYELLOW 2
00008 #define kGREEN  4
00009 
00010 BusOut binaryOutput(D7, D6, D5);    //Outputs as an integer
00011 
00012 unsigned int state = 0;
00013 void toggleYellow()
00014 {
00015     if (state == 0) {
00016         binaryOutput = kYELLOW;
00017         state = 1;
00018     } else {
00019         binaryOutput = 0;
00020         state = 0;
00021     }
00022 }
00023 
00024 //The main function - all executable C / C++
00025 //applications have a main function. This is
00026 //out entry point in the software
00027 Ticker T;
00028 
00029 int main() {
00030 
00031     binaryOutput = 0;
00032 
00033 // ALL the code is contained in a 
00034 // “while loop"
00035 
00036 // THIS IS NOT AN IDEAL SOLUTION. HOWEVER IT IS SIMPLE
00037 
00038 
00039     while(1) 
00040     {
00041     //The code between the { curly braces }
00042     //is the code that is repeated
00043     
00044         //STATE 1 (R) 
00045         binaryOutput = kRED;
00046         wait(4.0);
00047         
00048         //STATE 2 (RA)
00049         binaryOutput = kRED + kYELLOW;
00050         wait(4.0);
00051         
00052         //STATE 3 (G)
00053         binaryOutput = kGREEN;
00054         wait(4.0);
00055         
00056         //STATE 4 (Flashing A)
00057         T.attach(toggleYellow, 0.25);
00058         wait(4.0);
00059         T.detach();
00060                   
00061     }
00062 }