Download GTU B.Tech 2020 Winter 7th Sem 2171005 Embedded Systems Question Paper

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Subject Code: 2171005

GUJARAT TECHNOLOGICAL UNIVERSITY

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BE- SEMESTER-VII (NEW) EXAMINATION - WINTER 2020

Subject Name: Embedded Systems

Time: 10:30 AM TO 12:30 PM

Instructions:

1. Attempt any FOUR questions out of EIGHT questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1

1. (a) Write down the skills required for an Embedded System Designer. (MARKS 03)
2. (b) Describe the features associated with AHB and ASB Buses. (MARKS 04)

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3. (c) Describe an embedded processor as (i) GPP (ii) ASIP (iii) Single purpose processor. (MARKS 07)

Q.2

1. (a) Enlist IO port types with the help of example. (MARKS 03)
2. (b) Explain the concept of Multithreading in Real Time Operating System. (MARKS 04)
3. (c) Explain the requirements of Software Interrupts (SWI) in Embedded System. (MARKS 07)

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Q.3

1. (a) What is Semaphore? Explain where Semaphore can be utilized? (MARKS 03)
2. (b) What is the significance of Mailbox in RTOS? (MARKS 04)
3. (c) Discuss shared data problems and give solutions to such problems. (MARKS 07)

Q.4

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1. (a) Explain difference between level-triggered and edge-triggered interrupts. (MARKS 03)
2. (b) Describe the features associated with Bluetooth and Zigbee protocols used in wireless and mobile systems. (MARKS 04)
3. (c) Write down methods of saving and optimizing the memory space. (MARKS 07)

Q.5

1. (a) Explain the differences between Hard Real time and Soft Real time system. (MARKS 03)

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2. (b) Describe the requirement of Direct Memory Access (DMA) based data transfer in Device driver programming. (MARKS 04)
3. (c) Write down the functions of Device manager. (MARKS 07)

Q.6

1. (a) Describe Cyclic Scheduling model with an application. (MARKS 03)
2. (b) Define following:
   1. Deadline

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   2. Runtime
   3. Task Precedence
   4. Worst case execution time
   (MARKS 04)
3. (c) Explain any two alternative systems in RTOS for responding to a hardware source calls on the interrupts. (MARKS 07)

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Q.7

1. (a) Explain the function of Watchdog timer in MSP430 processor. (MARKS 03)
2. (b) Describe the four sources of clock in MSP430 processor. (MARKS 04)
3. (c) Explain the use of timer for generating Pulse Width Modulated waveform using MSP430. (MARKS 07)

Q.8

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1. (a) Explain the special features associated with GPIO port pins in MSP430 other than simple digital input output port pin characteristics. (MARKS 03)
2. (b) Write a program to turn on and off an LED connected to GPIO port pin P1.0 with 1ms delay. (MARKS 04)
3. (c) Explain interrupt handling process in MSP430. (MARKS 07)

Date: 21/01/2021

Total Marks: 56

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