EE516: Embedded Software Project 1. Setting Up Environment for Projects
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1 EE516: Embedded Software Project 1. Setting Up Environment for Projects By Dong Jae Shin
2 Contents Introduction to Projects of EE516 Tasks Setting Up Environment Virtual Machine Environment Ubuntu Linux OS Installation Environment for Development Tasks 1. Shell Script 2. Simple C Programming 3. Makefile Report Problems Source code submission & Screenshot General Grading Policy
3 Introduction to Projects Project 1: Setting up Environment for Project Development Project Project 2: Linux Fundamental Project 3: System Call and Synchronization Project 4: File System Project 5: Device Driver for Embedded H/W Especially, including BeagleBoard Development 3
4 Environment Overview Through this course,,, We will use Ubuntu LINUX as the base OS for the projects. Do we need new machine for Ubuntu LINUX? We usually use Windows OS for our own machine The answer is NO! We have Virtual Machine Environment! Such as VMware Player 4
5 Environment Overview What is Virtual Machine Environment? Software Stack of Virtual Machine Environment Ubuntu (Guest OS) Others (Guest OS) VMware Player (Virtualization Layer from VMware) Host OS (e.g. Windows) (Your host OS installed on the machine) Physical Resources of Your own machine (CPU, MEM, STORAGE, NETWORK..) 5
6 Install Virtual Machine Monitor Virtual Machine Environment Download VMware Player ( /vmware_workstation_player/12_0) or ( Depends on your OS Windows-64bit Linux-64bit You need 64-bit Operating System. If you don t have, please contact TA. 6
7 Install Virtual Machine Monitor Install VMM Install the product following the instructions of the installer Installation Path Enter your Run VMware Player 7
8 Install Guest OS We ll use Linux OS for Guest Linux made by Linus Torvalds in 1991 Free software for replacing Unix Many usages - servers, desktops, mobile devices(android) Linux Distributions Operating Systems based on Linux Kernel Linux Kernel : Core of Linux Scheduling, File System, Device Drivers System Software : Compilers, Libraries, User Interface User Program : Office, DB, Web Server, Web Browser, Mail 8
9 Download Ubuntu Linux Install Guest OS ubuntu desktop-amd64.iso or 9
10 Install Guest OS Create your own Virtual Machine Select New Virtual Machine Downloaded File Path Login Password 10
11 Install Guest OS Virtual Machine Properties Disk Size : 20GB is enough Need free space in HDD Main Memory Size for VM more than 1GB Number of processor for VM 11
12 Initialize Ubuntu Desktop Install Guest OS it takes several minutes. log-in with your password open terminal (ctrl + alt + T) 12
13 Install Guest OS Get root account & password root account : the highest level account for administrator It is needed when change system configuration install programs execute system-level program cannot reboot create root password you are the root now 13
14 Shell Script Shell A command line interpreter Accepts input from the user Executes the command that is given Types of Shell Command Line Interface (CLI) shell Based on text Graphic User Interface (GUI) shell Based on graphic e.g. x-window system in linux CLI GUI 14
15 Shell Script Various CLI Shells Bourne Shell (1977) == sh Developed by Steve AT&T Bell lab. First shell of UNIX system bourne shell (sh) Bourne-again shell (1989) == bash Developed by Brain Fox Basis of shells on UNIX/LINUX type system Recent systems also use bash bash shell : Ubuntu default 15
16 CSH (C shell) Shell Script Developed by Bill Joy C-language-like shell interpretation TCSH (Tenex C shell) Tenex: OS from Carnegie Mellon Univ. Enhanced version of CSH for Tenex system 16
17 Shell Script Command execution on Shell ls : List information about file(s) cat : Display the contents of a file echo : Print string mkdir : Create new folder(s) rmdir : Remove folder(s) pwd : Display current directory cd : Change current directory cp : Copy one or more files to another location mv : Move or rename files or directories rm : Remove files 17
18 Writing a Shell Script Text Editor gedit : GUI based text editor vi, vim : CLI based text editor apt-get install vim you can use any text editor install vim ubuntu:~$ gedit ubuntu:~$ vim test.sh 18
19 Writing a Shell Script Writing a Simple Script $ vim test.sh or $ gedit test.sh save file $ chmod 755 test.sh $./test.sh $./test.sh something simple source code execution Shell Script Guide 19
20 tree -d 20
21 Writing a C Program Writing a C Program $ vim hello or $ gedit hello.c save file $ gcc hello.c -o hello $./hello simple source code compile & execution C Program Guide Programming%20Guide.pdf 21
22 Make Utility Utility for automatically building executable programs and libraries from source code Help build programs from numbers of source code files Manage dependency among source code files and compiling method Prevent mistake $ gcc o hello hello.c Correct $ gcc o hello.c hello.c source code will be gone! 22
23 Syntax Make Syntax <Target>: <dependency> <Compile command> $ make program Will compile program After all compilation of others because of dependency This empty space should be tab not space 23
24 Makefile Example 24
25 Macro of Makefile Similar as #define of C programming Useful for repeated expression Below will do same compilation as previous slide $ make all : compile every BINs $ make clean : delete every BINs 25
26 Task1. Tree Script Write a bash shell script that shows tree structure of the directories and files included in you own home directory. 26 Example of Task1
27 Benchmark Task2. Simple C Program Computer program in order to assess the relative performance of an object, normally by running a number of standard tests and trials against it We can make File System Benchmark! with Sequential Access and Random Access Access Order Sequential Access Random Access Logical Block Example of Task1
28 Task2. Simple C Program Sample code is here File create Sequential Write Sequential Read Random Write Random Read File Delete End You should Implement 3 functions You can refer file_write_sequential() function void file_read_sequential() : about 20 lines void file_write_random() : about 25 lines void file_read_random() : about 25 lines 28 Example of Task1
29 Task2. Simple C Program Compile & Execute Sample Code Implement 3 operations : Sequential Read, Random Write, Random Read 29
30 Task2. Simple C Program Example of Task2 30
31 Task3. Makefile Write a Makefile for the source code of Task2 Test cases make all make clean Example Result of Task3 31
32 Problem 1 Problems Describe two types of VMM(hypervisor) Explain which type of VMM we used Problem 2 Advantages about makefile when we develop a software which has hugh amount of files. 32
33 Submission Contents Source Code Report Answer to the questions Key point of your Source Code Screenshots (Task 1, 2, 3) Page Limit : about 5 page (except figures) Submission Due Date : 2015/09/18 (Fri.) PM 23:59 djshin@core.kaist.ac.kr [EE516] student_number.zip (various compression format is allowed)
34 General Grading Policy Ratio of Grading Tasks : 70% Code operation(exception handling), Code readability No errors and warnings Report : 30% Free-form Problems, Key point of your Source Code, Screenshots of Results Page Limit : about 5 page (except figures) Delay Penalty 10%/day (AM 00:00) Source Code Copying will deduct all of your points should mention if you referenced it
35 How to Transfer your files Compression and Extraction tar.gz $ tar -czvf compressed_file_name.tar.gz dir_name $ tar -xzvf compressed_file_name.tar.gz zip $ zip compressed_file_name.zip dir_name $ unzip compressed_file_name.zip File Transfer between Host Window and VM Just Copy and Paste Ctrl + C Ctrl + V
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