CEC 320 Embedded Systems 1 Exam 2023

About this paper

CEC 320: A 3-page Second Semester Resit Examination for Embedded Systems I (CEC320), University of Buea College of Technology, Dept of Computer Engineering, Level 300, instructors Dr Njitacke Zeric/Kometa Denis, Options Networking & Software Engineering, --/07/2023, 2 hours. Section I Course Work (35 points): 7 questions covering real-time embedded system classification, memory access-speed ordering, watchdog timers, interrupt-enable bits, software vs hardware interrupts, ISR behavior, I2C vs SPI, strobe/handshake protocols, processor classification, embedded memory types, DMA transfer, priority/daisy-chain arbitration, and Arduino board features/components. Section II Practical (35 points): a Home Temperature Automation System built around an Arduino UNO, LM35 temperature sensor, two LEDs, a relay-driven fan, and a 16x2 LCD, with 16 sub-questions covering input/output pin identification, Arduino program-writing tasks (pin configuration and a completed control program), resistor sizing for the LEDs, the I2C LCD backpack module and address, and a smartphone-App-based alternative display using MIT App Inventor and Bluetooth serial communication.