Lesson nr.01-Hello everybody

Hardware setup:
In the first experiment that we are going to do, with PIC16F628A, we will show how to set M.C.U (MicroController Unit) to make all ports output (in 1 logic, meaning in this case 5vcc).
The output will be displayed on L.E.Ds, connected to PORTA and PORTB. Series resistors with L.E.Ds are able to limit the current through the LED to meet the data catalog (max. 20 ~ 25mA with a minimum voltage of 1.8 V  to open junction P.N).
Below you can find a video which showing a live demonstration of the entire circuit.



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.01:
'          Hello everybody
'  Written by:
'          Aureliu Raducu Macovei, 2010.
'  Description:
'          In this experiment we will show how to set MCU to make all ports output 
'          (in 1 logic).
'          The output will be displayed on LEDs, connected to PORTA and PORTB.
'  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;
{
 CMCON |=7;                 //TURN OFF ANALOGUE COMPARATOR AND MAKE PORTA TO DIGITAL I/O;
 TRISA = 0x00;              //SET PORTA TO BE OUTPUT;
 TRISB = 0x00;              //SET PORTB TO BE OUTPUT;
 PORTA = 0xFF;              //TURN ON LEDs ON PORTA;
 PORTB = 0xFF;              //TURN ON LEDs ON PORTB;
}                           //END.