NFC Smart Access Control System

 

Skill Level	Area of Focus	Operating System
Intermediate	IoT, Smart Cities,Smart Home	Linux

Many large office buildings allow entry by door access control systems using RFID modules. An NFC module is typically more expensive than simply an RFID module, but also usually features more powerful functions and security features. This project is designed to simulate a door access control system based on an NFC module. An NFC module is loaded on the DragonBoard™ 410c from Arrow Electronics using libnfc open-source code to provide access control, and a two-color LED light is used to indicate if an NFC card passes through the access control system.

Objective

Years ago, I loaded an RFID module onto a system via a serial port. However, the operating system was Win CE. With the rise of NFC, I had an idea to study the NFC module and make use of the opportunity to learn HDMI, LED and other module controls. Main learning content:

• Learning the NFC module. Presently, the NFC concept is very popular and its future application prospects such as secure payment will be extensive
• Learning to use a program to control LED light switch-on/off
• Learning the libnfc open-source framework
• Research on developing the mainboard-carried HDMI module

 

Build / Assembly Instructions

Materials Required / Parts List / Tools

• DragonBoard 410c development board
• Red LED
• Green LED
• Some Dupont lines
• PN532 NFC module
• An experiment circuit board
• PCA9306 level translator module

Source Code / Source Example / Application Executable

• libnfc-1.7.1
• nfc-poll.c

Build / Assembly

Connect the PN532 NFC module to the DragonBoard 410c development board via PCA9306 strictly in accordance with the IIC wiring mode and prepare two different NFC cards.

Usage Instructions

Power on the DragonBoard 410c, manually start the nfc-poll application after system startup, swipe different NFC cards, respectively. The program will read out each unique ID number and compare it with the pre-set value. If the ID number is found, the green LED will light up, indicating passing; if the ID number is not found, the red LED will light up, indicating no passing. Restricted by Dupont line, two cases should be tested separately.

Swipe Fail

Swipe OK