main.cpp

00001 /*
00002 
00003 Author: Christian Lerche
00004 Date: 05-12-2009
00005 MCU: LPC1768
00006 Notes: Simple graycode upcounter, using onboard LEDs.
00007 
00008 */
00009 
00010 #include "mbed.h"
00011 
00012 BusOut LEDs(LED4, LED3, LED2, LED1);        // Make 4 bit bus with LEDs
00013 unsigned char i;                            // Char to read for LEDs
00014 
00015 int main() {                                // Main structure
00016     i=0;                                    // initialize i to 0
00017     while(1) {                              // While-loop (Do forever)
00018         LEDs=i^(i>>1);                      // This converts the binary to graycode
00019         wait(0.5);                          // Wait for .5 seconds
00020         i=i+1;                              // Every loop, add one to i
00021         if(i==16) {                         // If i is 16, make i 0
00022             i=0;                            // This makes it 0
00023         }                                   // End of if
00024     }                                       // End of while-loop (Do not anymore)
00025 }                                           // End of main structure