EC EMBEDDED SYSTEM

Transcription

1 Shri Angalamman College of Engineering & Technology (An ISO 9000:2008 Certified Institution) Siruganoor, Tiruchirappalli EC EMBEDDED SYSTEM UNIT - I 1. Draw the block diagram for program memory organization 2. Define data memory 3. Differentiate program memory and data memory 4. Mention the types of interrupts 5. Define synchronous communication 6. Define USART 7. Define special purpose register(spr) 8. List the features of timer 9. Define MSSP 10. List the two modes of MSSP 11. What is a master mode? 12. Define slave mode 13. List the types of modes in USART 14. Define Baud rate generator 15. List the important elements of USART asynchronous module 16. Define A/D module 17. List the four types of registers in A/D module 18. Define I2 C Part B (16 MARKS) 1. Explain the architecture and features of PIC Microcontroller 16F873 and PIC 16F Explain the architecture and features of PIC Microcontroller 16F874 and PIC 16F Explain the Program Memory Organizations of PIC Microcontroller 16F87X 4. Explain the Data Memory Organizations of PIC Microcontroller 16F87X 5. Explain the instruction set of PIC Microcontroller 16F87X 6. Write a simple program for PIC microcontroller 16F87X using instruction set 7. Discuss about the I/O Ports with neat block diagram 8. Explain the working operations of timer modules for PIC 16X87X 9. Explain the Capture / Compare /PWM (CCP) Modules with neat block diagram 10. Explain the Master Synchronous Serial Port (MSSP) with neat block diagram 11. Explain the Addressable Universal Synchronous Receiver (USART ) 12. Explain the working principles of A/ D Convertor

2 UNIT - II 1. What is program counter (PC)? 2. What is the difference between CISC and RISC? 3. List the basic features of ARM assembly language 4. What is the difference between a Big -endian and Little -endian data representation? 5. What is the difference between the Harvard and Von Neumann architecture? 6. What are the two types of data in ARM architecture? 7. Define load-store architecture 8. What are the operations performed by ARM processor? 9. List the ARM Comparison and Move and data instructions 10. Define branch target 11. List the condition code in ARM 12. Define processor linkage 13. What is the purpose of CPSR and Z-bit? 14. Define CPU bus 15. List the major components of CPU bus 16. Draw a block diagram for microprocessor bus 17. What are the two additional bus signals provided by DMA? 18. What are reasons to use multiple buses and bridges? 19. List the three registers of DMA 20. Define AMBA bus 21. Define aspect ratio 22. What is meant by SIMMs and DIMMs? 23. What is glue logic interface? 24. Define logic analyzer 25. Define a total transfer time and burst transfer time Part B (16 MARKS) 1. Explain the architecture and memory organization of ARM processor? 2. Explain the data operations and flow control of ARM processor? 3. Write ARM assembly code to implement the following C assignments i. X = a + b ii. Y = (c d) +(e-f) iii. Z = a*(b+c)-d*e 4. Write ARM assembly code to implement the following C conditional: if (x-y<3) { a=b-c; x=0; } else

3 { y=0; d=e=f=g;} 5. Write ARM assembly code for the following loops: i. for(i=0;i<20;i++) z[i] = a[i]*b[i]; ii. for (j=0;j<20;j++) z[i]=a[i,j]*b[i] 6. Explain the procedure calls in ARM with suitable example? 7. Explain the four cycle handshake between a bus master and a device and draw the UML sequence diagram 8. Discuss about a Direct Memory Access (DMA) 9. Explain and Draw a timing diagram for write operation with no wait states and write takes two wait states 10. Explain and Draw a timing diagram for read operation with no wait states and write takes two wait states 11. Explain in detail the input output devices of an ARM processor 12. What are the memory devices of an ARM processor and explain them 13. Explain the development and debugging of ARM processor 14. Explain the design principles of Alarm Clock in Embedded systems UNIT III- EMBEDDED PROGRAMMING 1. Define high level language 2. What is a development cycle? 3. What is meant by in- line assembly? 4. What is run-time library? 5. Define software robustness 6. What are preprocessor directives? 7. What is meant by passing a value and passing a reference? 8. What is a source engineering tool? 9. What are the differences between including a header file and a text file or data file? 10. What is cross compiler? 11. Define macros. 12. What is a stack and queue? 13. What are the two ways by which a queue or stack can be implemented? 14. What are the disadvantages of C++? 15. How can optimizations can be used to eliminate the disadvantages in embedded C++ programs? 16. What are the advantages of ISR building task? 17. Why do you need a cross compiler? 18. How is java advantageous in embedded programming?

4 19. What does the mobile information device contain? 20. What is embedded C++? Part B (16 MARKS) 1. Tabulate program elements: Macros and Functions and their uses. 2. Explain the use of pointers, NULL pointers. 3. Explain the multiple function calls in the cyclic order in the main. Also write the advantages of building ISR queues and explain it. 4. Explain the C program compiler and cross compiler. 5. Explain the optimization of memory codes. 6. Explain the Embedded programming in C Explain the function pointers, function queues and ISR queues. UNIT IV- EMBEDDED SYSTEM CO - DESIGN 1. What should be the goal during an embedded system development process? How does it vary from the software development process? 2. Why are the device drivers the programs that are memory and processor sensitive? 3. What are the factors for selecting a processor during the system design phase? 4. What is target system? How does the target system differ from the final embedded system? 5. What is meant by application software for a target system? 6. What is an emulator and ICE? 7. What are the components of an emulator? 8. What are the advantages of using an ICE 9. What is an assembler? How is an assembler used? 10. What are the mnemonics? 11. What are linker, loader and interpreter? 12. What is an integrated development system? 13. What is time mode of logical analyzer? 14. What is state mode of a logical analyzer? 15. What are the uses of oscilloscope? 16. How will you use a bit rate meter to measure throughput from a real time system? 17. Why is the selection of the right platform essential during the embedded system development process? 18. What is a cross assembler? 19. Define latency 20. What is DLL? 21. What is a dissembler? 22. Define simulator 23. What is the difference between emulator and ICE? 24. Define performance accelerators 25. Define prototyping tools

5 Part B (16 MARKS) 1. Explain an Embedded System project management 2. Explain an Embedded system design and Co-Design Issues in System development process 3. Explain the design cycle in the development phase for an embedded system 4. Explain the uses of Target system or its emulator and In-Circuit Emulator 5. Explain the use of software Tools for Development of an embedded system 6. Explain the use of scopes and logic analyzers for system hardware tests 7. Explain the issues in Embedded System Design UNIT V- REAL TIME OPERATING SYSTEMS 1. What should be the goal of an OS? 2. Why does an OS functions provide two nodes, user mode and supervisory mode? 3. List the functions of a kernel. What can be the functions outside the kernel? EC EMBEDDED SYSTEMS 7 4. List the advantages and disadvantages of fixed and dynamic block allocation by the OS 5. The kernel controls the access of system resources, CPU, memory, IO sub system and devices. Why is it needed? 6. What is the importance of device management in an OS an embedded system? 7. Give examples of IO subsystem 8. What are the uses of OS interoperability ant portability? 9. Define a network operating system. How does a network OS differ from a conventional OS? 10. How do you choose scheduling strategy for the periodic, a periodic and sporadic tasks? 11. What are the OS units at an RTOS kernel? 12. When do you cooperative scheduling and when preemptive? 13. What are the advantages of time slice scheduling by an RTOS? 14. List three ways in which an RTOS handles the ISRs in an multitasking environment 15. How does a preemption event occur? 16. Why should you estimate worst-case latency? 17. What should be the OS security policy? 18. What is the protection mechanism for the OS? 19. What do you estimate worst-case latency? 20. Why are the mobile OS becoming popular in embedded systems for telephone and Pocket PCs?

6 Part B (16 MARKS) 1. Explain the goals of operating system services. 2. Explain the three alternative systems in three RTOS for responding a hardware source call with the diagram. 3. Explain the scheduler in which RTOS insert into the list and the ready task for sequential execution in a co-operative round robin model. 4. Explain the fifteen point strategy for synchronization between the processes, ISRs, OS functions and tasks for resource management. 5. Explain the critical section service by a preemptive scheduler. 6. Explain the Rate Monotonic Co-operative scheduling. 7. Discuss with the diagram task synchronization model for a specific application. 8. Explain the case study of Mobile OS 9. Explain the IEEE standard POSIX functions for standardization of RTOS and intertask communication functions 10. Compare and contrast the scheduling strategies, real time scheduling, round robin mode and time slicing scheduling 11. Real time system performance metrics are throughput, interrupt latencies, average response times and deadline misses. Explain the importance of each of these metrics