C has been the most commonly used language. This slideshare is all about the introduction to Advanced C. You will learn the fundamentals and the problem solving skills. You will also get an idea on building algorithms and the conditions regarding it. There are also slides which will give knowledge about operators and their types. As a whole you will gain knowledge on three important fundamentals of C.
Linux has become integral part of Embedded systems. This presentation gives deeper perspective of Linux from system programming perspective. Stating with basics of Linux it goes on till advanced aspects like system calls, process subsystem, inter process communication mechanisms, thread and various synchronization mechanisms like mutex and semaphores. Understanding these services provided by Linux are essential for embedded systems engineer. These constructs helps users to write efficient programs in Linux environment
Getting started with setting up embedded platform requires audience to understand some of the key aspects of Linux. Starting with basics of Linux this presentation talks about basic commands, vi editor, shell scripting and advanced commands
Linux is an operating system or a kernel. It is distributed under an open source license. Its functionality list is quite like UNIX. Linux is an operating system or a kernel which germinated as an idea in the mind of young and bright Linus Torvalds when he was a computer science student. The main advantage of Linux was that programmers were able to use the Linux Kernel to design their own custom operating systems. With time, a new range of user-friendly OS's stormed the computer world. Now, Linux is one of the most popular and widely used Kernel, and it is the backbone of popular operating systems like Debian, Knoppix, Ubuntu, and Fedora.
Often called as the Swiss Army Knife of Embedded Linux, BusyBox combines tiny versions of many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. It is written with size-optimization
and limited resources in mind. Here is a presentation that details about BusyBox.
C has been the most commonly used language. This slideshare is all about the introduction to Advanced C. You will learn the fundamentals and the problem solving skills. You will also get an idea on building algorithms and the conditions regarding it. There are also slides which will give knowledge about operators and their types. As a whole you will gain knowledge on three important fundamentals of C.
Linux has become integral part of Embedded systems. This presentation gives deeper perspective of Linux from system programming perspective. Stating with basics of Linux it goes on till advanced aspects like system calls, process subsystem, inter process communication mechanisms, thread and various synchronization mechanisms like mutex and semaphores. Understanding these services provided by Linux are essential for embedded systems engineer. These constructs helps users to write efficient programs in Linux environment
Getting started with setting up embedded platform requires audience to understand some of the key aspects of Linux. Starting with basics of Linux this presentation talks about basic commands, vi editor, shell scripting and advanced commands
Linux is an operating system or a kernel. It is distributed under an open source license. Its functionality list is quite like UNIX. Linux is an operating system or a kernel which germinated as an idea in the mind of young and bright Linus Torvalds when he was a computer science student. The main advantage of Linux was that programmers were able to use the Linux Kernel to design their own custom operating systems. With time, a new range of user-friendly OS's stormed the computer world. Now, Linux is one of the most popular and widely used Kernel, and it is the backbone of popular operating systems like Debian, Knoppix, Ubuntu, and Fedora.
Often called as the Swiss Army Knife of Embedded Linux, BusyBox combines tiny versions of many common UNIX utilities into a single small executable. It provides replacements for most of the utilities you usually find in GNU fileutils, shellutils, etc. It is written with size-optimization
and limited resources in mind. Here is a presentation that details about BusyBox.
Linux has become integral part of Embedded systems. This three part presentation gives deeper perspective of Linux from system programming perspective. Stating with basics of Linux it goes on till advanced aspects like thread and IPC programming.
Lot of book tells about what is programming. Many also tell how to write a program, but very few cover the critical aspect of translating logic into a program. Specifically, in this fast paced industry, when you don't have time to think to program, this course comes really handy. It builds on the basics of programming, smooth sailing through the advanced nitty-gritty’s of the Advanced C language by translating logic to code
An unique module combining various previous modules you have learnt by combing Linux administration, Hardware knowledge, Linux as OS, C/Computer programming areas. This is a complete module on Embedded OS, as of now no books are written on this with such practical aspects. Here is a consolidated material to get real hands-on perspective about building custom Embedded Linux distribution in ARM.
This third part of Linux internals talks about Thread programming and using various synchronization mechanisms like mutex and semaphores. These constructs helps users to write efficient programs in Linux environment
The second part of Linux Internals covers system calls, process subsystem and inter process communication mechanisms. Understanding these services provided by Linux are essential for embedded systems engineer.
Linux has emerged as a number one choice for developing OS based Embedded Systems. Open Source development model, Customizability, Portability, Tool chain availability are some reasons for this success. This course gives a practical perspective of customizing, building and bringing up Linux Kernel on an ARM based target hardware. It combines various previous modules you have learned, by combing Linux administration, Hardware knowledge, Linux as OS, C/Computer programming areas. After bringing up Linux, you can port any of the existing applications into the target hardware.
Buildroot is a set of Makefiles and patches that makes it
easy to generate a complete embedded Linux system. It generates root file system images ready to be used. Complete build system based on the Linux Kernel configuration system and supports a wide range of target architectures. Here is a presentation that gives a practical quick start to build-root.
This is the last slide of advancedC - Advanced C part 3. In the previous slides we learnt all the fundamentals that is required to learnt Advanced C. In this last slide of Advanced C you will be learning about Multilevel pointers, Command line argument, different kinds of functions, and also you will gain deep knowledge on pre processor and user defined data types. This will help you to improve your knowledge in Advanced C
This course gets you started with writing device drivers in Linux by providing real time hardware exposure. Equip you with real-time tools, debugging techniques and industry usage in a hands-on manner. Dedicated hardware by Emertxe's device driver learning kit. Special focus on character and USB device drivers.
This is continuation of the slide Advanced C part 1. In part 1 you learnt about fundamentals of C - How to build an algorithm, operators. In this module - Advanced C part 2 you will be learning about functions, pointers and standard Input Output functions. This slide will help you to move a further ahead in Advanced C and gain deeper knowledge on it.
Доклад рассказывает об устройстве и опыте применения инструментов динамического тестирования C/C++ программ — AddressSanitizer, ThreadSanitizer и MemorySanitizer. Инструменты находят такие ошибки, как использование памяти после освобождения, обращения за границы массивов и объектов, гонки в многопоточных программах и использования неинициализированной памяти.
Irrespective of devices, C language is the best when it comes to Embedded Systems. This detailed course talks about various finer details of the language.
Have a quick overview of most of the embedded linux components and their details. How ti build Embedded Linux Hardware & Software, and developing Embedded Products
There is a surge in number of sensors / devices that are getting connected under the umbrella of Internet-Of-Things (IoT). These devices need to be integrated into the Android system and accessed via applications, which is covered in the course. Our Android system development course curriculum over weekends with practicals ensures you learn all critical components to get started.
Coming up with optimized C program for Embedded Systems consist of multiple challenges. This presentation talks about various methods about optimizing C programs in Embedded environment. It also has some interesting tips, Do's and Dont's that will offer practical help for an Embedded programmer.
Linux has become integral part of Embedded systems. This three part presentation gives deeper perspective of Linux from system programming perspective. Stating with basics of Linux it goes on till advanced aspects like thread and IPC programming.
Lot of book tells about what is programming. Many also tell how to write a program, but very few cover the critical aspect of translating logic into a program. Specifically, in this fast paced industry, when you don't have time to think to program, this course comes really handy. It builds on the basics of programming, smooth sailing through the advanced nitty-gritty’s of the Advanced C language by translating logic to code
An unique module combining various previous modules you have learnt by combing Linux administration, Hardware knowledge, Linux as OS, C/Computer programming areas. This is a complete module on Embedded OS, as of now no books are written on this with such practical aspects. Here is a consolidated material to get real hands-on perspective about building custom Embedded Linux distribution in ARM.
This third part of Linux internals talks about Thread programming and using various synchronization mechanisms like mutex and semaphores. These constructs helps users to write efficient programs in Linux environment
The second part of Linux Internals covers system calls, process subsystem and inter process communication mechanisms. Understanding these services provided by Linux are essential for embedded systems engineer.
Linux has emerged as a number one choice for developing OS based Embedded Systems. Open Source development model, Customizability, Portability, Tool chain availability are some reasons for this success. This course gives a practical perspective of customizing, building and bringing up Linux Kernel on an ARM based target hardware. It combines various previous modules you have learned, by combing Linux administration, Hardware knowledge, Linux as OS, C/Computer programming areas. After bringing up Linux, you can port any of the existing applications into the target hardware.
Buildroot is a set of Makefiles and patches that makes it
easy to generate a complete embedded Linux system. It generates root file system images ready to be used. Complete build system based on the Linux Kernel configuration system and supports a wide range of target architectures. Here is a presentation that gives a practical quick start to build-root.
This is the last slide of advancedC - Advanced C part 3. In the previous slides we learnt all the fundamentals that is required to learnt Advanced C. In this last slide of Advanced C you will be learning about Multilevel pointers, Command line argument, different kinds of functions, and also you will gain deep knowledge on pre processor and user defined data types. This will help you to improve your knowledge in Advanced C
This course gets you started with writing device drivers in Linux by providing real time hardware exposure. Equip you with real-time tools, debugging techniques and industry usage in a hands-on manner. Dedicated hardware by Emertxe's device driver learning kit. Special focus on character and USB device drivers.
This is continuation of the slide Advanced C part 1. In part 1 you learnt about fundamentals of C - How to build an algorithm, operators. In this module - Advanced C part 2 you will be learning about functions, pointers and standard Input Output functions. This slide will help you to move a further ahead in Advanced C and gain deeper knowledge on it.
Доклад рассказывает об устройстве и опыте применения инструментов динамического тестирования C/C++ программ — AddressSanitizer, ThreadSanitizer и MemorySanitizer. Инструменты находят такие ошибки, как использование памяти после освобождения, обращения за границы массивов и объектов, гонки в многопоточных программах и использования неинициализированной памяти.
Irrespective of devices, C language is the best when it comes to Embedded Systems. This detailed course talks about various finer details of the language.
Have a quick overview of most of the embedded linux components and their details. How ti build Embedded Linux Hardware & Software, and developing Embedded Products
There is a surge in number of sensors / devices that are getting connected under the umbrella of Internet-Of-Things (IoT). These devices need to be integrated into the Android system and accessed via applications, which is covered in the course. Our Android system development course curriculum over weekends with practicals ensures you learn all critical components to get started.
Coming up with optimized C program for Embedded Systems consist of multiple challenges. This presentation talks about various methods about optimizing C programs in Embedded environment. It also has some interesting tips, Do's and Dont's that will offer practical help for an Embedded programmer.
* What are Embedded Systems?
* C for Embedded Systems vs. Embedded C.
* Code Compilation process.
* Error types.
* Code Compilation using command line.
Data Structures, which is also called as Abstract Data Types (ADT) provide powerful options for programmer. Here is a tutorial which talks about various ADTs - Linked Lists, Stacks, Queues and Sorting Algorithms
Communication protocols (like UART, SPI, I2C) play an very important role in Micro-controlled based embedded systems development. These protocols helps the main board to communicate with different peripherals by interfacing mechanism. Here is a presentation that talks about how these protocols actually work.
Functions - C Programming
What is a Function? A function is combined of a block of code that can be called or used anywhere in the program by calling the name. ...
Function arguments. Functions are able to accept input parameters in the form of variables. ...
Function return values
These functions are created by the programmer as needed to perform specific tasks within their program. They allow the programmer to encapsulate a set of statements into a single block that can be called whenever necessary. User-defined functions help in modularizing the code, making it easier to read, understand, and maintain.These functions are part of the programming language's standard library and are available for use without requiring the programmer to define them. They serve various purposes and are commonly used for tasks like mathematical operations, string manipulation, sorting, and more.Remember, functions aid in organizing code, improving readability, and promoting code reusability, which are crucial aspects of efficient programming and software development.
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3. Why Functions?
● Reusability
● Functions can be stored in library & re-used
● When some specific code is to be used more than once, at different places, functions
avoids repeatition of the code.
● Divide & Conquer
● A big & difficult problem can be divided into smaller sub-problems and solved using
divide & conquer technique
● Modularity can be achieved.
● Code can be easily understandable & modifiable.
● Functions are easy to debug & test.
● One can suppress, how the task is done inside the function, which is called
Abstraction.
5. Parameters, Arguments
and Return Values
● Parameters are also commonly referred to as arguments, though arguments
are more properly thought of as the actual values or references assigned to
the parameter variables when the subroutine is called at runtime.
● When discussing code that is calling into a subroutine,any values or references
passed into the subroutine are the arguments, and the place in the code
where these values or references are given is the parameter list.
● When discussing the code inside the subroutine definition, the variables in the
subroutine’s parameter list are the parameters, while the values of the
parameters at runtime are the arguments.
7. Function and the Stack
P1
P2
P3
P4
:
:
:
Pn-1
Pn
RAM
Command line
Arguments
Stack
HOLE
Heap
.BSS(Uninitialized
Data segment)
Initialized data
Segment
Code Segment
Data
Segment
Parameter List
Return Address
Local Variables
StackMemory Layout
9. Various Passing
Mechanisms
Pass by Value Pass by reference
● This method copies the actual value of an
argument into the formal parameter of the
function.
● In this case, changes made to the
parameter inside the function have no
effect on the actual argument.
● This method copies the address of an
argument into the formal parameter.
●
Inside the function, the address is used to
access the actual argument used in the
call. This means that changes made to the
parameter affect the argument.
12. Pass by value &
Pass by reference
DIY
Problem 1:
Write a function to swap two integers passed from main function.
Problem 2:
Write a function to perform both sum & product of two different integers
passed from main function.
14. Ingnoring the function's
return value
In C tradition, you can choose to ignore to capture the
return value from a method:
● Function read_int returning an int
And collecting in variable i in the
main function.
● Main function ignoring the return
value.
16. Introduction
● An array is a collection of data of similar data type.
● Example:
If we want to store the ages of 5 different people, then we can use array instead
of using 5 different variables.
● The mory alloaction will be contiguos.
● A specific element in an array is accessed by an index.
17. Array: Declaration
Syntax
type arrayName [ SIZE ];
Example
To declare an array to store ages of 5 people
int age[ 5 ];
Total Memory
Total Memory = SIZE * sizeof(dataType)
= 5 * sizeof( int ) // Assuming sizeof(int) = 4
= 5 * 4
= 20 bytes
18. Array: Definition
Example
To declare an array to store ages of 5 people
int age[ 5 ] = {10, 20, 30, 40, 50};
Memory Allocation
10 20 30 40 50
age[0]
age[4]
age[3]
age[2]
age[1]
100 104 108 112 116
DIY : Write a program to add all the elements of the array.
19. Array: Passing to function
DIY: WAF to sort the elements of the array in asc / des order.
23. Variadic Functions:
Introduction
● Variadic functions can be called with any number of trailing arguments.
For example,
printf(), scanf() are common variadic funtions
● Variadic functions can be called in the usual way with individual arguments.
syntax
return_type function_name(parameter list, ...);
24. Variadic Functions:
How are defined & used
Defining and using a variadic function involves three steps:
step 1: Variadic functions are defined using an ellipsis (‘…’) in the argument list,
and using special macros to access the variable arguments.
For example,
step 2: Declare the function as variadic, using a prototype with an ellipsis (‘…’),
in all the files which call it.
Step 3: Call the function by writing the fixed arguments followed by the
additional variable arguments.
25. Variadic Functions:
Arguments access macros
● Descriptions of the macros used to retrieve variable arguments.
● These macros are defined in the header file stdarg.h
Type/
Macros
Description
va_list The type va_list is used for argument pointer variables
va_start This macro initializes the argument pointer variable ap to point to the first
of the optional arguments of the current function; last-required must be
the last required argument to the function
va_arg The va_arg macro returns the value of the next optional argument, and
modifies the value of ap to point to the subsequent argument. Thus,
successive uses of va_arg return successive optional arguments
va_end This ends the use of ap
28. Recursive Function
● Function calling itself
Steps:
1. Identification of the base case.
2. Writing the recursive case.
Example Factorial of a number
n !
1 n = 0 (Base case)
n * (n – 1) ! n > 0 (Recursive case)