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1. PRESIDENCY UNIVERSITY
SCHOOL OF ENGINEERING
SOFTWARE FOR EMBEDDED SYSTEMS (ECE 362)
COURSE SEMINAR
PRESENTED BY
MOHAMMED FURQHAN
20192ESV0002
GUIDED BY
DR. RAJIV RANJAN

2. TABLE OF CONTENTS
Introduction
Background
Specific Applications of the chosen Topic
Case study
 Solutions
Summary
Conclusion
References

3. Title
A Case Study Of An Embedded System Software
Stack Layers

4. INTRODUCTION
 Embedded system software is computer software, written to
control machines or devices that are not typically thought of as
computers, commonly known as embedded systems
 A software stack typically would include solutions from lowest
level firmware to high level software applications ported on this
hardware. STACK. Control algorithms, processing, services.

5. What is System ?
A system is a group of units that are joined together to work
in a specific routine and perform some fixed operation
What is an Embedded System ?
An embedded system is that system which has
computer hardware with software embedded in it

6. What is an Embedded Software ?
Embedded Software is the software that controls an
embedded system.
 All embedded systems need some software for
their functioning
For developing this software, a number of different
tools are needed tools include editor, compiler,
assembler and debugger

7. 1.Editor
 The first tool you need for Embedded Systems Software Development Tools is text editor.
 This is where you write the code for your embedded system.
2.compiler
 A compiler is used when you are done with the editing part and made a source code.
 The function of compiler is to convert the source code in to object code.

8. 3.Assembler
 The function of an assembler is to convert a code written in assembly language
into machine language.
 All the mnemonics and data is converted in to op codes and bits by an
assembler.
4.Debugger
 As the name suggests, a debugger is a tool used to debug your code.
 Debugger goes through the whole code and tests it for errors and bugs.

9. 5.linker
 A linker is a computer program that combines one or more object code files and
library files together in to executable program.

10. 6.Libraries
 A library is a pre written program that is ready to use and provides specific
functionality.
 Library is a file written in C or C++ and can be used by different programs and
users.

11. 6.Simulator
 Among all embedded software tools, simulating software is also needed.
 A simulator helps you to see how your code will work in real time.

12. A Software Stack(layers) for CAN BUS Protocol (ISO 11898)

13. What is a can bus protocol Stack?
 CAN Stack is an in-vehicle networking (BUS) standard, which allows the
various electronic control units to communicate with each other. CAN Stack
is a serial communication protocol for passenger vehicles.
 It allows considerably higher data rates in tune of 500 kbps. Using the CAN
Transport layer (ISO 15765), the data rate can be further increased

14. CAN Bus Software Stack comprises of the following
layers and software components:
 A Software Stack/Package compliant with ISO 11898: Our CAN BUS Stack consists of
CAN Network Management (NM) Layer and CAN Interface (IF) Layer.
 NM layer manages sleep/wake up functionality.
 CAN Bus Interface Layer carries out all hardware independent tasks, related to the
flow of data to the upper layer modules of the CAN software stack.
 UDS Software Stack compliant with ISO 14229: UDS is the off-board diagnostics
application. It is based on ISO 14229 Standard. This layer manages the diagnostics aspect
of CAN bus software.

15.  Flash Bootloader Application: Flash bootloader is tasked with ECU Reprogramming. In our
CAN software stack, we provide a UDS based flash boot loader for ECU Flashing purposes.
 ISO Transport Layer (ISO 15765): Responsible for segmenting the data, if the size of the
data frame is more than 8 Bytes.
 Low-Level Driver: The CAN BUS Device Driver enables the access to hardware resources,
for the upper software layers. It also offers access to the hardware independent API, to the
application layer.

16. A CASE STUDY ON
UDS Software Stack Implementation and Integration
Projects for Automotive Customers
BY
Embitel Solution’s

17. Business Challenges:
 Since UDS protocol is a unified standard (consolidation of KWP 2000 and ISO
15765-3), it has been an integral part of all new product development programs of
the global automotive players.
 However, the in-house technical teams are often confronted with challenges related
to UDS software stack development and integration.
 All this results in additional software development costs and customers lose focus
on core product development activities.
 To help the customers overcome these hurdles, Embitel has been partnering with
their product development teams for UDS software stack integration projects.

18. Embitel Solution
 This software solution for UDS stack is customizable, to best suit your end-user
application.
 Embitel follows the V-Model Software Development Life Cycle for UDS Stack
Implementation.
 Architecture Planning.
 Creating High Level Design Diagram.
 Identifying the required software modules.
 Project specific Architecture Customization.
 Creating Module Level Design.
 Implementation of UDS software stack as per the customer’s system
environment.
 Testing.
 Module Testing.
 Integration Testing.
 Functional Testing.

19. UDS Software Stack Implementation and Integration
By Embitel Solution’s

20. Features of UDS stack which fulfilled the customers
expectations
 Static Enabling and Disabling the SIDs.
 Configurable DIDs configurable to meet the business and use-case requirements.
 UDS software stack is Portable to 8/16/32 bit microcontroller platform.
 Hardware independent stack.

21. SUMMARY
 A brief explanation about embedded systems ,embedded software and required tools for
developing a software.
 Explanation on embedded software stack layers e.g. A software stack for can bus protocol
and detailed explanation of stack layers.
 A case study on(UDS Software Stack Implementation and Integration Projects for
Automotive Customers) how embitel solutions took a challenge and met the customers
expectations

22. REFRENCES
 https://www.embitel.com/automotive-casestudies/uds-software-stack-
implementation-and-integration-projects-for-automotive-customers
 https://www.theengineeringprojects.com/2016/11/top-10-embedded-systems-
software-development-tools.html
 https://www.sciencedirect.com/topics/engineering/system-software-layer