operating system to implement a security briefcase alarm on

Hello, This project has to be free of any plagiarism. A full description has been added as an attachment. Please feel free to contact me for any other details you might need. Varun Vig 1. Describe the architecture of an operating system (OS) and its services, and evaluate its use in a variety of scenarios. 2. Discuss the process model and the scheduling, IPC and synchronisation services provided by an OS and reason informally about the behaviour of a multitasking system under a variety of scheduling algorithms. 3. Review the principal concepts and methods of memory management and le system implementation. 4. Identify a variety of security threats and examine appropriate OS mechanisms to protect against them. 5. Design, implement and evaluate solutions to problems of I/O device handling, synchronisation, communication and timing for multitasking systems, using ap- propriate OS services and concurrent programming techniques. 1  The course work consists of 1. development and demonstration of software that uses the multi-tasking, syncro- nisation, communication and time services of an operating system 2. a report on specic aspects of the software and OS services Your report should address only the specic topics identied. Evidence of plagiarism, collusion or other academic misconduct will be regarded se- riously and may result in serious consequences for your academic progress. If you are unclear about what constitutes academic misconduct, or the possible penalties, you should consult the University guidelines on Academic Misconduct. Where you have made use of the work of others, you must provide proper acknowl- edgement by providing an appropriate citation. 2 2 Scenario 2.1 Introduction You are required to develop software that uses the uC/OS-II operating system to implement a security briefcase alarm on a LPC-2378STK ARM board. Your software should be written in standard C and should run on an ARM board in PB S2. You should imagine that an LPC2378-STK board could be xed to a briefcase to act as a security device. The security mechanism is enabled by pressing BUT_1. When enabled, if the device detects any motion of the briefcase, it requires a user to enter a 4 digit security code within some pre-dened time interval (known as the ALARM_INTERVAL), starting when the motion was rst detected. A count of the time remaining should be shown on the display, as should the ALARM_INTERVAL. If the correct code is entered in time, the security mechanism is disabled and the briefcase can be opened by pressing BUT_2 (which is also used to lock the briefcase). If the correct code is not entered in time, the alarm is raised. A typical device, currently available for sale, makes a loud (100 dB) noise as its alarm. In order to avoid disruption to others in the lab, your device should simply ash the LEDs and display an appropriate status message instead. The alarm can be turned o only by entering the correct 4 digit code, following which the security mechanism is disabled. The user should use the joystick to enter the security code: LEFT and RIGHT should be used to cycle round the digits on the display; UP and DOWN should be used to increment/decrement the selected digit. The value of the ALARM_INTERVAL can be adjusted only when the security mechanism is disabled. It should be possible to use the red knob (potentiometer) to select an integer value between 10 and 120 seconds. A typical display may look like this: Alarm : PENDING Interval : 120 Time : 7 Case : LOCKED MOVING Code : 0 0 2 4 - 3