Embedded System & Real Time Programming - May 2015

Electronics Engineering (Semester 8)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks. 1 (a) Explain low power modes of MSP430 with the help of clock modules.(5 marks) 1 (b) What are the challenges in meeting various design metric/requirements. Explain for:
i) Low power
ii) High performance(5 marks) 1 (c) Explain serial communication SCI & SPI, compare the same.(5 marks) 1 (d) Compare various scheduling policies.(5 marks) 2 (a) Explain parallel peripherals of MSP430.(10 marks) 2 (b) Explain CAN features and protocols.(10 marks) 3 (a) Explain various modifiers and their purpose and use in an embedded system.(10 marks) 3 (b) Compare assembly language programming with c-programming.(5 marks) 3 (c) Compare ARM state with THUMB state.(5 marks) 4 (a) Explain interrupt/exceptions and its handling in ARM.(5 marks) 4 (b) With the help of suitable diagram give difference between RS485 and RS232, also compare its characteristics, features.(10 marks) 4 (c) Compare, explain various operating modes of ARM.(5 marks) 5 (a) In a real time having periodic Tasks T₁, T₂, T₃ and aperiodic task T_{4 all requesting at time t=0 having following properties.
i) Calculate utilisation ratios and hence comment on scheduling.
ii) Graphically illustrate the scheduling scheme
iii) Determine if the tasks can meet deadlines.}

Write short notes on any three:

7 (a) Black box and white box testing.(7 marks) 7 (b) Comparison between ASIC and SOC.(7 marks) 7 (c) Preprocessor directives.(7 marks) 7 (d) Pre-emptive and non pre-emptive scheduling comparison.(7 marks)