06-05 ModularCodeExample

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Revision as of 15:38, 14 August 2014

This program is an example that uses modular code. It performs the same function as Example 6.3. Using modular code allows programmers to reuse code.

/* Program Example 6.5: main.cpp file for modular 7-seg keyboard controller

This example program includes example code PE6.06, PE6.07, PE6.08, PE6.09
                                                                           */
#include "mbed.h"
#include "HostIO.h"
#include "SegDisplay.h"
char data1, data2;                    // variable declarations

int main() {                          // main program
  SegInit();                          // call init function
  HostInit();                         // call init function
  while (1) {                         // infinite loop
    data2 = GetKeyInput();            // call to get 1st key press
    Seg2  = SegConvert(data2);        // call to convert and output
    data1 = GetKeyInput();            // call to get 2nd key press
    Seg1  = SegConvert(data1);        // call to convert and output
    pc.printf("  ");                  // display spaces on host
  }
}