yahiafarghaly/prettyos

A Preemptive Hard Real Time kernel for embedded devices.

A Preemptive Hard Real time kernel for embedded devices.

☑ List of Supported Features

• Static and Dynamic Priority Schedulers

  • Preemptive Scheduling using a static priority scheduling class.
    • An RMS (Rate Monotonic Scheduling) can be effective for use.
    • Number of tasks at each priority level is 1.
  • EDF (Earliest Deadline First)
    • Limited Support for kernel services.

• Configurable Number of Tasks.

• Lock/Unlock Scheduler.

• Support Memory Management .

  • Using a basic memory manager for fixed-sized allocatable objects in a memory partition (i.e region).

• For Static Priority Scheduling

  • Runtime Priority Change.
  • Suspend/Resume Tasks.
  • Mutex Support.
    • Including OCPP ( Original Ceiling Priority Protocol ) to overcome priority inversion scenarios.
  • Support Semaphores, Message Mailboxes and EventFlags .

• Hooks APIs at Application and CPU port level.

• Software based Tasks' stack overflow detection.

💻 Porting availability

System	BSP / CPU Port	Notes
TI Stellaris LM4F120	✔️
Linux machine	✔️	Requires POSIX.1b standards as minimal

To add another port, Please read this porting guide first.

🗃️ Include the RTOS

You include only a single header file pretty_os.h which contains the list of the public APIs with a proper description for each one.

📝 License

Copyright © 2020 - present, Yahia Farghaly Ashour.
This project is MIT Licensed.

prettyos's Issues

Original PCP implementation bug that affects CPU context switch.

fd45f31

Mailbox code

Has this header

/*

• Function: OS_MutexCreate

• ---