Rob Toulson / Mbed 2 deprecated PE_06-01_SevenSegCounter

by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"

Dependencies:   mbed

main.cpp@0:b738c2b5c143, 2012-10-15 (annotated)

Committer:
robt
Date:
Mon Oct 15 21:22:04 2012 +0000
Revision:
0:b738c2b5c143
by Rob Toulson and Tim Wilmshurst from textbook "Fast and Effective Embedded Systems Design: Applying the ARM mbed"

Who changed what in which revision?

UserRevisionLine numberNew contents of line
robt 0:b738c2b5c143 1 /* Program Example 6.1: seven-segment display counter
robt 0:b738c2b5c143 2 */
robt 0:b738c2b5c143 3 #include "mbed.h"
robt 0:b738c2b5c143 4
robt 0:b738c2b5c143 5 BusOut Seg1(p5,p6,p7,p8,p9,p10,p11,p12); // A,B,C,D,E,F,G,DP
robt 0:b738c2b5c143 6 char SegConvert(char SegValue); // function prototype
robt 0:b738c2b5c143 7 char A=0; // declare variables A and B
robt 0:b738c2b5c143 8 char B;
robt 0:b738c2b5c143 9
robt 0:b738c2b5c143 10 int main() { // main program
robt 0:b738c2b5c143 11 while (1) { // infinite loop
robt 0:b738c2b5c143 12 B=SegConvert(A); // Call function to return B
robt 0:b738c2b5c143 13 Seg1=B; // Output B
robt 0:b738c2b5c143 14 A++; // increment A
robt 0:b738c2b5c143 15 if (A>0x09){ // if A > 9 reset to zero
robt 0:b738c2b5c143 16 A=0;
robt 0:b738c2b5c143 17 }
robt 0:b738c2b5c143 18 wait(0.5); // delay 500 milliseconds
robt 0:b738c2b5c143 19 }
robt 0:b738c2b5c143 20 }
robt 0:b738c2b5c143 21
robt 0:b738c2b5c143 22 char SegConvert(char SegValue) { // function 'SegConvert'
robt 0:b738c2b5c143 23 char SegByte=0x00;
robt 0:b738c2b5c143 24 switch (SegValue) { //DP G F E D C B A
robt 0:b738c2b5c143 25 case 0 : SegByte = 0x3F;break; // 0 0 1 1 1 1 1 1 binary
robt 0:b738c2b5c143 26 case 1 : SegByte = 0x06;break; // 0 0 0 0 0 1 1 0 binary
robt 0:b738c2b5c143 27 case 2 : SegByte = 0x5B;break; // 0 1 0 1 1 0 1 1 binary
robt 0:b738c2b5c143 28 case 3 : SegByte = 0x4F;break; // 0 1 0 0 1 1 1 1 binary
robt 0:b738c2b5c143 29 case 4 : SegByte = 0x66;break; // 0 1 1 0 0 1 1 0 binary
robt 0:b738c2b5c143 30 case 5 : SegByte = 0x6D;break; // 0 1 1 0 1 1 0 1 binary
robt 0:b738c2b5c143 31 case 6 : SegByte = 0x7D;break; // 0 1 1 1 1 1 0 1 binary
robt 0:b738c2b5c143 32 case 7 : SegByte = 0x07;break; // 0 0 0 0 0 1 1 1 binary
robt 0:b738c2b5c143 33 case 8 : SegByte = 0x7F;break; // 0 1 1 1 1 1 1 1 binary
robt 0:b738c2b5c143 34 case 9 : SegByte = 0x6F;break; // 0 1 1 0 1 1 1 1 binary
robt 0:b738c2b5c143 35 }
robt 0:b738c2b5c143 36 return SegByte;
robt 0:b738c2b5c143 37 }
robt 0:b738c2b5c143 38