RFID Access Control System

RFID Access Control System Lucius Knight

General System Design • Microcontroller • PSoC CY8C29466 • 24MHz Bus Frequency • Memory Available • 32kB FLASH • 2kB RAM • Memory Requirements • System Software ~ 5kB FLASH • Activity Log ~ 25kB FLASH • System Data ~ 250B RAM

Kernel Selection START • Time Slice Cyclic Scheduler • 10ms Period Initialize Timer Event No Yes Key Scan User Interface RFID UpdateTime Output Data Update Display

Initialization • System Initialization • LCD • RFID • Keypad • Period • Only run one time • Execution Time • ~ 100 ms

Time Slice • Sleep timer used for periodic interrupt • Period • 10 ms

Keypad Task • Scans for key presses • Period • 10 ms (Periodic) • Execution Time • ~ 5 us (max)

User Interface Task • Determines menu state based on user input • Period • 100 ms (Periodic) • Execution Time • ~ 1 ms (max)

RFID Task • ID validation • Controls • H-bridge/lock • LED • Buzzer • Period • 100 ms (Periodic) • Execution Time • ~ 1 ms (max)

Update Time Task • Calculates current date and time • Period • 1 s (Periodic) • Execution Time • ~ 1.5 us (max)

Output Data Task • Sends activity log to PC serial port • Period • 10 ms (Sporadic) • Execution Time • ~ 2 ms (max after decomposition)

Update Display Task • Displays current information to LCD • Period • 100 ms (Periodic) • Execution Time • ~ 2.5 ms (max)

System CPU Load • L(max) = 5µs/10ms + 1ms/100ms + 1ms/100ms +1.5µs/1s + 2ms/10ms + 2.5ms/100ms • L(max) = 24.6% • L(avg) = 4.6%

Module List

Update Display Task Communications SeniorProject.c LCD Module LCD I/O Key Scan Key LCD Update Time Update Display Time Structure User Interface State

Update Time Task Communication UserInterface.c Time Module User Interface Update Display Time Structure

User Interface Task Communication Keypad I/O Key.c User Interface Module Keypad Key Scan User Interface Key

Output Data Task Communication UserInterface.c Output Data Module Serial I/O DB9 User Interface Output Data State

RFID Access Control System