Svend Kaffke / Mbed 2 deprecated 7SegmentDisplay

just a small code example to display numbers on a 7 segment display should be easy to rewrite for your own needs.

Dependencies:   mbed

main.cpp@0:463ff11d33fa, 2012-12-29 (annotated)

Committer:
ShingyoujiPai
Date:
Sat Dec 29 12:00:01 2012 +0000
Revision:
0:463ff11d33fa
7 Segment Display Basic

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ShingyoujiPai 0:463ff11d33fa 1 #include "mbed.h"
ShingyoujiPai 0:463ff11d33fa 2
ShingyoujiPai 0:463ff11d33fa 3 //pins are sorted from upper left corner of the display to the lower right corner
ShingyoujiPai 0:463ff11d33fa 4 //the display has a common cathode
ShingyoujiPai 0:463ff11d33fa 5 //the display actally has 8 led's, the last one is a dot
ShingyoujiPai 0:463ff11d33fa 6 DigitalOut led[8]={p18, p19, p17, p20, p16, p14, p15, p13};
ShingyoujiPai 0:463ff11d33fa 7
ShingyoujiPai 0:463ff11d33fa 8
ShingyoujiPai 0:463ff11d33fa 9 //each led that has to light up gets a 1, every other led gets a 0
ShingyoujiPai 0:463ff11d33fa 10 //its in order of the DigitalOut Pins above
ShingyoujiPai 0:463ff11d33fa 11 int number[11][8]={
ShingyoujiPai 0:463ff11d33fa 12 {1,1,1,0,1,1,1,0}, //zero
ShingyoujiPai 0:463ff11d33fa 13 {0,0,1,0,0,1,0,0}, //one
ShingyoujiPai 0:463ff11d33fa 14 {1,0,1,1,1,0,1,0}, //two
ShingyoujiPai 0:463ff11d33fa 15 {1,0,1,1,0,1,1,0}, //three
ShingyoujiPai 0:463ff11d33fa 16 {0,1,1,1,0,1,0,0}, //four
ShingyoujiPai 0:463ff11d33fa 17 {1,1,0,1,0,1,1,0}, //five
ShingyoujiPai 0:463ff11d33fa 18 {1,1,0,1,1,1,1,0}, //six
ShingyoujiPai 0:463ff11d33fa 19 {1,0,1,0,0,1,0,0}, //seven
ShingyoujiPai 0:463ff11d33fa 20 {1,1,1,1,1,1,1,0}, //eight
ShingyoujiPai 0:463ff11d33fa 21 {1,1,1,1,0,1,1,0}, //nine
ShingyoujiPai 0:463ff11d33fa 22 {0,0,0,0,0,0,0,1} //dot
ShingyoujiPai 0:463ff11d33fa 23 };
ShingyoujiPai 0:463ff11d33fa 24
ShingyoujiPai 0:463ff11d33fa 25
ShingyoujiPai 0:463ff11d33fa 26 int main() {
ShingyoujiPai 0:463ff11d33fa 27 while (1) {
ShingyoujiPai 0:463ff11d33fa 28 //all led's off
ShingyoujiPai 0:463ff11d33fa 29 for(int i = 0; i<8;i++){led[i] = 0;}
ShingyoujiPai 0:463ff11d33fa 30
ShingyoujiPai 0:463ff11d33fa 31 //display shows the number in this case 6
ShingyoujiPai 0:463ff11d33fa 32 for (int i=0; i<8; i++){led[i] = number[6][i];} //the digit after "number" is displayed
ShingyoujiPai 0:463ff11d33fa 33
ShingyoujiPai 0:463ff11d33fa 34 //before it gets tired
ShingyoujiPai 0:463ff11d33fa 35 wait(0.5);
ShingyoujiPai 0:463ff11d33fa 36
ShingyoujiPai 0:463ff11d33fa 37 }
ShingyoujiPai 0:463ff11d33fa 38 }