https://github.com/Chalandi/OSEK

OSEK (ECC1/BCC1) Implementation for Cortex™-M3
https://github.com/Chalandi/OSEK

Last synced: 3 months ago
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OSEK (ECC1/BCC1) Implementation for Cortex™-M3

• Host: GitHub
• URL: https://github.com/Chalandi/OSEK
• Owner: Chalandi
• License: gpl-3.0
• Created: 2018-02-13T11:03:38.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2023-05-17T22:09:38.000Z (over 1 year ago)
• Last Synced: 2024-05-20T09:32:51.810Z (6 months ago)
• Language: C
• Size: 98.6 KB
• Stars: 26
• Watchers: 2
• Forks: 13
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

• awesome-automotive - Chalandi Amine OSEK 2.2.3 - Implementation for ARM Cortex M3. (RTOS / OSEK/VDX)

README

        
chalandi/OSEK

==================



    

        

    

        

    

        

    

        



This repository implements an OSEK-like, bare-metal

operating system for ARM(R) Cortex(R)-M3.

The goals are to achieve near-compatibility with OSEK (ECC1/BCC1)

and to provide an intuitive, esay-to-understand sample application

that can be extended for your own projects.

Features include:

  - OSEK-like OS implementation with support of most common features.

  - The sample application runs on the STM32F100-NUCLEO Board.

  - Tasks and events interact to produce a blinky LED show featuring the green and blue LEDs toggling at 1Hz (green) and 1/2 Hz (blue) respectively.

  - Use a simple self-written bare-metal startup.

  - Power, clock and port initialization.

  - 1ms timebase derived from the ARM(R) `SysTick`.

  - Implementation in C99 with absolute minimal use of assembly.

A clear and easy-to-understand build system based on either free GNUmake/GCC

or alternatively KEIL MDK completes this fun and educational project.

This repository provides keen insight on writing your own

_bare_ _metal_ operating system from scratch on a modern

microcontroller using entirely free tools and open standards.

## Details on the Application

Following low-level chip initialization, the program jumps

to the `main()` subroutine in [Application/Appli.c](./Application/Appli.c).

Here there are two functional lines. The first line initializes the LEDs.

The second line subsequently starts the operatng system via call

to `OS_StartOS()`.

An idle task and one single extended task animate the user LED,

providing a simple blinky LED show featuring the gren and blue

LED(s) toggling at 1Hz (green) and 1/2 Hz (blue) respectively.

## Building the Application

### Build with KEIL uVision (MDK)

Build on `Win*` is easy using an installed KEIL-MDK.

Simply use the project file `PRJ_02.uvprojx` which can

be found in the project's root directory.

### Build with GNUmake on `*nix`

Build on `*nix*` is easy using an installed `gcc-arm-none-eabi`

```sh

cd OSEK

./Build.sh

```

The build results including ELF-file, HEX-mask, MAP-file

can be found in the `Output` directory following the GNUmake build.

## References

Further information on open standard OSEK can be found in ISO 17356 and in the link below:

* https://en.wikipedia.org/wiki/OSEK