Rob Toulson / Mbed 2 deprecated PE_06-05_ModularCodeExample

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

Dependencies:   mbed

SegDisplay.cpp

Committer:
robt
Date:
2012-10-15
Revision:
0:507436d37d5e

File content as of revision 0:507436d37d5e:

/* Program Example 6.6: SegDisplay.cpp file for modular 7-seg keyboard controller 
                                                                  */
#include "SegDisplay.h"
BusOut Seg1(p5,p6,p7,p8,p9,p10,p11,p12);      // A,B,C,D,E,F,G,DP
BusOut Seg2(p13,p14,p15,p16,p17,p18,p19,p20); // A,B,C,D,E,F,G,DP

void SegInit(void) {
  Seg1=SegConvert(0);        // initialise to zero
  Seg2=SegConvert(0);        // initialise to zero
}

char SegConvert(char SegValue) {         // function 'SegConvert'
  char SegByte=0x00;
  switch (SegValue) {                  //DP G F E D C B A
    case 0 : SegByte = 0x3F; break;    // 0 0 1 1 1 1 1 1 binary
    case 1 : SegByte = 0x06; break;    // 0 0 0 0 0 1 1 0 binary
    case 2 : SegByte = 0x5B; break;    // 0 1 0 1 1 0 1 1 binary
    case 3 : SegByte = 0x4F; break;    // 0 1 0 0 1 1 1 1 binary
    case 4 : SegByte = 0x66; break;    // 0 1 1 0 0 1 1 0 binary
    case 5 : SegByte = 0x6D; break;    // 0 1 1 0 1 1 0 1 binary
    case 6 : SegByte = 0x7D; break;    // 0 1 1 1 1 1 0 1 binary
    case 7 : SegByte = 0x07; break;    // 0 0 0 0 0 1 1 1 binary
    case 8 : SegByte = 0x7F; break;    // 0 1 1 1 1 1 1 1 binary
    case 9 : SegByte = 0x6F; break;    // 0 1 1 0 1 1 1 1 binary
  }
  return SegByte;
}