Programming Embedded Linux

מק"ט: #91100 | משך קורס: 40 שעות אק'
| מספר מפגשים: 5

This course provides embedded systems developers, making their first steps with Linux as an embedded system platform, with the skills required for being a productive programmer in that environment. The curriculum includes building applications and device drivers with real time constraints, understanding the inner working of the Linux system and its effects the system behavior.
The course is suitable for people planning to develop for embedded Linux platforms from any source, including “home made” Linux distributions or embedded Linux system vendors  

לפרטים נוספים, מלא את פרטיך או התקשר 03-7100673
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מטרות

Create applications and device drivers for Embedded Linux environments, or to import such applications from systems using legacy RTOSes.

קהל יעד

Seasoned embedded systems developers wishing to become competent Linux Embedded systems developers

תנאי קדם

Delegates should have a working knowledge with C programming language and basic knowledge with embedded systems

נושאים

Introduction

  • What is Linux
  • Layers in a Linux system
  • Linux vs. Legacy RTOS

 

Basic concepts

  • Files and file system
  • The shell
  • Basic commands
  • Processes
  • Setting up networking

 

Application programming and the user space API

  • Makefiles and the build environment
  • Processes and threads
  • Real time priorities

 

Application programming and the user space API

  • Synchronization and IPC (mutex, condition variables, mailboxes, pipes, shared memory, Unix domain sockets and signals)
  • Timers
  • Memory mapping and locking
  • Debugging applications: in process and using remote debugger
  • Labs – using pipes, debugging

 

Linux Kernel

  • Kernel overview
  • History
  • Versions
  • Source code layout
  • Good practices
  • System call interface

 

Writing a simple kernel module

  • A simple kernel module structure
  • Implicit steps of compiling modules in Linux kernel version 2.6
  • Using shell commands to manipulate modules
  • The kernel log
  • Using the printk function
  • Passing parameters to the module

 

Memory Management

  • Memory areas
  • Memory page frames
  • Requesting and releasing page frames
  • Allocating contiguous virtual memory area
  • The slab and slob allocators
  • Memory caches and allocations
  • Managing slabs
  • Creating and destroying caches
  • User space memory access

 

Implementing a character device file

  • The VFS structure
  • Initialization and termination
  • Opening the device file
  • IOCTL
  • Implementing base operations

 

Debugging

  • Kernel configuration for debugging
  • printk
  • KGDB
  • Oops messages

 

Locking mechanisms

  • Locking requirements
  • Preemption
  • Atomic bit operations
  • Interrupt disabling
  • Spin lock
  • Semaphores

 

Linux Scheduler

  • Process and thread
  • Scheduling policies
  • Priorities
  • Kernel tasks
  • task_struct structure
  • SMP scheduling

 

Interrupt handling

  • Hardware interrupt handling basics
  • Interrupt handler and control
  • Low level handling
  • Wait queues technique
  • Threaded interrupts

 

Bottom halves

  • Differing work
  • Using software interrupts
  • Tasklets
  • Timers & RTC
  • Work queues

 

Network sub system overview

  • The layer model
  • Registration and un-registration
  • Socket buffers, allocations and manipulations
  • Network headers
  • Packet reception
  • Packet transmission
  • NAPI 
תגיות