Embedded Operating Systems

Monday, 22 February 2016

Friday, 17 April 2015

PL-III (EOS) viva questions

BRACT’s

Vishwakarma Institute of Information Technology, Kondhawa, Pune-48

Department of Computer Engineering

Viva Questions

Subject: PL-III (EOS) Class: T.E.

Sr No	Question
1	What is BegalBlack-Bone (BBB)?
2	Which processor is embedded in BBB?
3	Which processor BBB uses 32 bit or 64 bit?
4	List out BBB specifications.
5	Draw and explain general layout / architecture of BBB.
6	How much RAM size is used in the BBB available in your college?
7	Does BBB have HDMI port?
8	How many USB ports are there in BBB?
9	How do you connect BBB with desktop or laptop?
10	What are the ways to connect BBB to Linux machine?
11	Which is embedded operating system does your BBB have inbuilt?
12	What is the functionality of reset button on BBB?
13	What are the safest ways to shutdown or power off BBB?
14	How much is external power supply can be provided to BBB?
15	What GPIO stands for?
16	In how many blocks GPIO pins have been categorized?
17	What is the formula to calculate GPIO pin?
18	What setDirection and setValue methods does in your program?
19	List out the ARM versions available in market.
20	How can you distinguish BBB with normal desktop?
21	Define embedded system.
22	Define embedded operating system.
23	Define real time operating system.
24	What are the different types of operating systems you know?
25	What are the types of real time tasks?
26	List advantages and disadvantages of RTOS.
27	Define integrated processor.
28	What do you understand by System on Chip (SoC)?
29	Draw general anatomy of embedded system.
30	What are the major categories of ARM instruction set?
31	Explain with the example of load-store instruction.
32	Define LSB.
33	Define OSDL.
34	What is BIOS? Why it is important in boot process?
35	List different bootloaders you know.
36	Differentiate BIOS Vs bootloader.
37	What do you understand by cross development environment? Did you try it in your laboratory?
38	Define device driver?
39	What Linux commands can be used to insert, remove and list loadable kernel modules?
40	What PCI stands for?
41	What is SSH? Explain with example.
42	What is steeper motor? In what directions it can be rotated?
43	Define embedded Android.
44	Draw and explain Android architecture.
45	Draw and explain Android boot process.
46	What is Zygote in Android boot process?
47	Approximately how many system services are launched after completion Androidboot process?
48	What is role of Activity Manager in Android?
49	What is subject code of Embedded Operating System and Programming Lab-III?
50	List out the assignments that you have kept in your journal file.

Tuesday, 31 March 2015

Unit 4 Bootloader and Device Drivers

Click here to download presentation

Friday, 27 March 2015

Writing your first device driver on Fedora19

Steps:
1. Create a C program.
2. Compile C program to get .o file
3. Convert .o file to .ko (kernel object) file
4. Insert .ko file
5. Check the existence of .ko file
6. Remove .ko file

ofd.c source code

/* ofd.c – Our First Driver code */
#include <linux/module.h>
#include <linux/version.h>
#include <linux/kernel.h>

static int __init ofd_init(void) /* Constructor */
{
printk(KERN_INFO "Hello : ofd registered");
return 0;
}

static void __exit ofd_exit(void) /* Destructor */
{
printk(KERN_INFO "Goodbye : ofd unregistered");
}

module_init(ofd_init);
module_exit(ofd_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("VIIT Comp Dept");
MODULE_DESCRIPTION("Our First Driver");

Contents of MakeFile

# Makefile – makefile of our first driver

# if KERNELRELEASE is defined, we've been invoked from the

# kernel build system and can use its language.

ifneq (${KERNELRELEASE},)

obj-m := ofd.o

# Otherwise we were called directly from the command line.

# Invoke the kernel build system.

else

KERNEL_SOURCE := /usr/src/kernels/3.18.7-100.fc20.x86_64

PWD := $(shell pwd)

default: