פיתוח תוכנה ב- Real Time & Embedded Linux

תכנות Linux ב- RT ו- Embedded
מי שמבין באמת, יודע.

קורס לינוקס מעשי שמתמקד ב-Real Time ו-Embedded, עם היבטי Real Time ו-Embedded בתכנות kernel. עבודת מעבדה תוך שימוש ב-Embedded device, היא חלק בלתי נפרד מהקורס.

אורך הקורס: 5 ימים

מחיר הקורס: 8,232 ש"ח

תאריך פתיחת הקורס: 18/06/2024

להרשמה Syllabus PDF

Course overview

The GNU / Linux operating system is the operating system of choice for many embedded and real time developers: the main reasons being that the source code is free, there are no runtime royalties and it is a robust reliable operating system with excellent networking support. This hands-on course focuses on real time and embedded Linux with real time and embedded aspects of kernel programming. Lab work using an embedded device, is an integral part of the course.

Who should attend?

Embedded and RT programmers developing devices using the Linux kernel and driver developers for internal or external peripherals

Prerequisite:

Usage of Linux’s command line, text editing (any text editor), C programming, make, use of Linux C compiler, Linux system calls. Basic knowledge of device drivers and kernel modules is a pro.

Hardware:

ODROID-XU4

Course Outline:

1.Introduction (day 1)

Linux overview
Real time and embedded
The kernel and its role
Linux supported architectures

2. Build Root (Day 1)

Project overview
Getting buildroot
Quick start:
Configuration interfaces
using a predefined configuration

3. Cross tool chains (Day 1)

The need for cross tool chains.
Tools naming convention.
Getting and installing a tools chain.
Cross building software
Cross debugging
uClibc

4. Configuring and Building the Linux Kernel (Day 2)

Getting the sources
The structure of source tree
Configuring and building the kernel
Compiling the kernel
Kernel modules:
- Cross compiling modules
- Integrating modules into the kernel source tree
Configuring buildroot:
- Configuring the kernel in buildroot

5. Customizing Buildroot (Day 2)

Integrating Additional packages into buildroot:
- dl
- packages
- config.in
Rootfs overlays

6. Device Trees (Day 2 + 3)

Working without device trees
What is a device tree
DTS and DTB
Device tree integration into driver code.
The syntax of DTS files

7. Linux Boot Sequence (Day 3)

Embedded Linux boot process
Kernel boot parameters
Bootloaders, U-Boot
Buildroot configuring system components:
- init, busy box, U-Boot
root-fs:
- initrd & initramfs
- overlayfs

8.Net-Booting and The Network File System (NFS) (Day 3)

How does NFS aid the embedded development process
Preparing NFS
Mounting an NFS volume
NFS daemons
Exports file
root-fs over NFS
tftp
DHCP

9. User-mode Programming (Day 4)

librt overview.
Scheduling policies and priorities.
CPU affinity.
Memory
RT signals:
- explanation
- comparison with standard signals
Asynchronous I/O

10. Linux and Real Time (Day 5)

RTOS memory issues and Linux.
Linux hardware interaction
Latency (kernel, interrupt, scheduler)
Kernel preemption
- Linux hard real time extensions
- Applying the RT patch
- Threaded IRQ's
- Voluntarily giving up CPU – cond_resched
- Controlling kernel preemption:
  - preempt_disable
  - preempt_enable
  - preempt_count
- spinlocks and raw spinlocks.
- Priority inheritance
- Priority inversion
- Don't do's\

11. Introduction to The Yocto Project (Day 5)