Embedded System Design - December 2015

MU Electronics Engineering (Semester 7)

Total marks: --
Total time: -- INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

Answer the following questions.

1 (b) With respect to power, performance and cost state and explain the associated design metrics for an embedded system. 5 marks

1 (c) What are interrupts and explain the factors that contribute to interrupt response time in a system. 5 marks

1 (d) Explain the structure of typical C source program for ARM based target processor. Typically list the various data types along-with memory size supported by a C compiler. 5 marks

2 (a) What is a task and various states that a task can lie in for an embedded environment. 5 marks

2 (b) Explain briefly the problem of priority inversion and mechanism to prevent the same. 5 marks

3 (a) State and explain the criteria for tasks schedulability and explain various scheduling mechanisms. 5 marks

3 (b) Explain briefly the register structure of Cortex-M3 architecture along with the function of various special registers. 5 marks

4 (a) Distinguish between Cortex-M3 and M4 architecture and explain briefly the interrupt structure of M3 architecture. 5 marks

4 (b) Explain the operation and significance of following MicroC/OS-II functions. (Any three). (i) OSInit(); (ii) OSSemPend(); & OSSemPost(); (iii) OSTaskCrete(); (iv) OSMboxPost(); & OSMboxPend(); 5 marks

5 (a) Write a brief note to bring out the comparison between Cortex - M3, A8 and R4 architectures. 5 marks

5 (b) Explain the various inter-process/task communication tools like pipe, mailbox, message queue and semaphore used by an RTOS environment. 5 marks

Write short notes on (Any two).

6 (b) Low power features in Cortex - M3 architecture. 5 marks

6 (c) Black box and White box testing. 5 marks