Lesson nr.02-Blink a LED

Hardware setup:
In this experiment we will show how to set MCU to make a LED blinking. PORTB will be used to show that.
Button S1 and (pull-up) resistance with value of 4.7 K will provide the manual reset mode the microcontroller.
ICSP connector provides the connection between the programmer (PicKit 2) and microcontroller (PIC6F628A).



Circuit Diagram:
For those who want to build it on their own breadboard or other platform, here is the electronic scheme built in Eagle Cad, free version:

Software:
Here is the C program written for MikroC PRO for PIC 2010 (version v4.15).

/*
'*******************************************************************************
'  Lesson nr.02:
'          Blink a LED  (Blink entire PORTB)
'  Written by:
'          Aureliu Raducu Macovei, 2010.
'  Description:
'          In this experiment we will show how to set MCU to make a LED blinking.
'          PORTB will be used to show that.
'  Test configuration:
'    MCU:                        PIC16F628A
'    Test.Board:                 WB-106 Breadboard 2420 dots
'    SW:                         MikroC PRO for PIC 2010 (version v4.15)
'  Configuration Word
'    Oscillator:                 INTOSC:I/O on RA.6, I/O on RA.7
'    Watchdog Timer:             OFF
'    Power up Timer:             Disabled
'    Master Clear Enable:        Enabled
'    Browun Out Detect:          Enabled
'    Low Voltage Program:        Disabled
'    Data EE Read Protect:       Disabled
'    Code Protect:               OFF
'*******************************************************************************
*/
void main()                      //MAIN;
{
 TRISB = 0x00;                   //SET PORTB TO BE OUTPUT;
 PORTB = 0x00;                   //TURN OFF LEDs ON PORTB;
 while(1){                       //INFINITE LOOP;
          PORTB = ~PORTB;        //INVERT STATE ON PORTB;
          Delay_ms(1000);        //WAIT 1S;
          }
}                                //END;