seg_checker.cpp

00001 /*
00002 Title:          7 Segment Checker
00003 Author:         David Ross 
00004 Date:           May 27th, 2016
00005 Description:    This program will individually light up segments
00006                 a, b, c, ... , h (dot) continually with a 0.5 second
00007                 delay between each segment displayed
00008 */
00009 
00010 #include "mbed.h"
00011 
00012 // Declaration Section for seven_segs
00013 
00014 BusOut seven_segs (D2, D3, D4, D6, D7, D9, D10, D11);   // MSB=D11, LSB=D2
00015 int main(void)
00016 {
00017     
00018     unsigned char value=0x80;               // set value for CC Display
00019     unsigned char temp;                     // temp value for troubleshooting
00020     for(;;)                                 // loop forever
00021     {
00022         temp= ~value;                       // invert value for CA display
00023         seven_segs= temp ;                  // send value to 7 segments
00024         wait_ms(500);                       // wait 0.5 seconds
00025         value=value >> 1;                   // shift  to select next segment
00026         if(value < 1)                       // if value is 0
00027         {
00028             value=1;                        // then reset to 1
00029             do                              // reverses pattern
00030             {
00031                 temp= ~value;               // invert for CA display
00032                 seven_segs= temp;           // send value to 7 sements
00033                 wait_ms(500);               // wait 0.5 seconds
00034                 value = value <<1;          // shift to select next segment
00035             }while (value<0x80);            // as long as < 0x80 
00036             value=0x80;                     // then reset value to 0x80
00037         }
00038         
00039     }       
00040 }