Controller Circuit

Writing structures of language C in general is consisted of 4 blocks:

1. Header.

2. Constanta declaration global and or variable.

3. Function and or procedure (this can be written under principal program).

4. Principal program.

In general, programming C was simplest programming to be done with only writes down main program only, that is:

Void main (void)

{

….

}

The full programming done is:

/*HEADER for call library that will used*/

#include

#include

/*Constanta declaration and or global variable */

Unsigned char dt, xx;

Char buf[33];

/* Function declaration and or procedure */

Unsigned char lamp (unsigned char bitn)

{

PORTA=bitn & 0x3C;

}

/*Main program */

Void main (void);

/* Constanta declaration and or local variable */

Char data;

PORTA=0x00;

DDRA=0xF0;

While (1)

{

…

};

}