FreeRTOS - A Mini Real Time Kernel
If you're having trouble getting Linux to run on that 8-bit processor with 32KB of memory don't despair, there are open-source alternatives. FreeRTOS is an open source real time kernel that has been ported to a number of microprocessors. The website lists ports to over 40 different processor/compiler combinations.
FreeRTOS supports both co-routines and tasks and numerous forms of IPC. All tasks (and co-routines) run in a single memory space so they are more akin to threads in Linux.
The source consists of 3 or 4 (depending on features used) C source code files plus header files. Porting to a new architecture requires modification to only one of the C files and one of the header files. Depending on the compiler and the compiler options, the basic kernel object code can be reduced to less than 4KB.
FreeRTOS is actively developed and both community and paid support are available. There is also a version available that has been certified for use in safety critical applications. Version 5.0 of FreeRTOS was released in April.
Mitch Frazier is an Associate Editor for Linux Journal.
|Non-Linux FOSS: Install Windows? Yeah, Open Source Can Do That.||Nov 24, 2015|
|Cipher Security: How to harden TLS and SSH||Nov 23, 2015|
|Web Stores Held Hostage||Nov 19, 2015|
|diff -u: What's New in Kernel Development||Nov 17, 2015|
|Recipy for Science||Nov 16, 2015|
|Firefox's New Feature for Tighter Security||Nov 13, 2015|
- Cipher Security: How to harden TLS and SSH
- Non-Linux FOSS: Install Windows? Yeah, Open Source Can Do That.
- Web Stores Held Hostage
- Firefox's New Feature for Tighter Security
- diff -u: What's New in Kernel Development
- November 2015 Issue of Linux Journal: System Administration
- Libreboot on an x60, Part II: the Installation
- It's a Bird. It's Another Bird!
- IBM LinuxONE Provides New Options for Linux Deployment
- Strengthening Diffie-Hellman in SSH and TLS