FYP Sem II : Week 9

Title of Activity:

The making of software part, PIC programming

Analysis:

• As PIC is the main component to control the whole system, the correct programming is needed to be written.

• C programming is preferred language to be written in PIC16F877a and PIC C compiler is the software used to compile the program.

• In this project, the PIC need to interface with some other components and devices such as RFID reader, IR sensor, switches, RS232 level converter and LEDs.

• It is compulsory to determine and declare the input and output port. In this project, 
1. Input port - 
• pin 2 (RA0) for IR sensor
• pin 28 (RD5), 29 (RD6) and 30 (RD7) to detect RFID reader
2. Output port - 
• pin 38 (RB5) for blue LED to indicate IR sensor detected
• pin 39 (RB6) for green LED to indicate document detected
• pin 40 (RB7) for red LED to indicate no document detected
• pin 25 (RC6) for serial port to send data to computer
•  pin 26 (RC7) for serial port to receive data to computer

• Below is the program build for PIC:

Figure 1: Set the variables and port address

Figure 2: The main program

Figure 3: The sub function of detection card

Conclusion:
This coding is crucial to execute the performance of circuit.