The FreeRTOS kernel is now an MIT licensed AWS open source project, and these pages are being updated accordingly.

Quality RTOS & Embedded Software About   Contact   Support   FAQ   Download Menu      Quick Start Supported MCUs PDF Books Trace Tools Ecosystem Quick Start Guide Support Forum ⇓ Download Source ⇓ FreeRTOS+ Ecosystem  FreeRTOS+TCP:  Thread safe TCP/IP stack  SafeRTOS:  TUV certified RTOS  OpenRTOS:  Commercial Licensed RTOS  Fail Safe File System:  Ensures data integrity  FreeRTOS BSPs:  3rd party driver packages  Trace & Visualisation:  Tracealyzer for FreeRTOS  CLI:  Command line interface  WolfSSL SSL / TLS:  Networking security protocols  RTOS Training:  Delivered online or on-site  IO:  read(), write(), ioctl() interface FreeRTOS+ Lab Projects  FreeRTOS+POSIX:  POSIX threading API  FreeRTOS+FAT:  Thread aware file system Hint: Use the tree menu to navigate groups of related pages   FreeRTOS News Snippets [About FreeRTOS] Latest news snippets: FreeRTOS V7.4.0 has been released, with a new queue set feature, and enhanced tick-less low power support. FreeRTOS V7.3.0 adds new ARM Cortex-R4 ports for the TMS570 and RM48 MCUs, and a tick-less mode for low power operation. Photos from FreeRTOS training at the Microchip Masters technical training conference: photo #1, photo #2, photo #3, photo #4. Real Time Engineers Ltd. has announced a major expansion program that increases developer productivity and adds advanced networking and internet features to the world's most popular embedded kernel. The new features are also supported by a dedicated website portal: www.FreeRTOS.org/FreeRTOS-Plus Real Time Engineers Ltd. release FreeRTOS ports for the new STMicroelectronics STM32F0 family ARM Cortex-M0 microcontrollers. Real Time Engineers Ltd. release FreeRTOS ports for the new Infineon XMC4000 family ARM Cortex-M4 and NXP LPC1100 ARM Cortex-M0 microcontrollers. FreeRTOS V7.1.0 has been released. This incorporates the TriCore port, adds an RX630 demo, and adds ARM Cortex-M4F ports for IAR and Keil. The Keil port is demonstrated on an LPC4350 (running at 205MHz), and the IAR port is demonstrated on an STM32F4. Official TriCore support has been added. Code is available immediately. FreeRTOS comes top in 2011 EETimes embedded market study in two categories: The RTOS kernel currently being used, and the RTOS kernel being considered for the next project! Demos have been added for the Microsemi (formally Actel) SmartFusion mixed signal FPGAs. IAR, Keil and GCC/SoftConsole projects are provided. FreeRTOS V7.0.0 has been released. This includes many RTOS kernel enhancements, one new port, two new demos, and a brand new, efficient, software timer implementation. FreeRTOS V7.0.0 is completely backward compatible with FreeRTOS V6.x.x for effortless upgrading. See the change history log for full details. FreeRTOS V6.1.0 has been released. This includes some enhancements and a brand new port to the Renesas RX62N. Three RX62N compilers and two RX62N development boards are supported, making six demo projects in total. See the change history log for full details. An LPC1768 LPCExpresso FreeRTOS Education kit has been launched. A generic ARM Cortex-M3 edition of the FreeRTOS eBook has been launched. FreeRTOS is delighted to announce participation in the new IAR partner program. An interview with Richard Barry has been published in Electronics Weekly. Richard Barry is guest editor for Embedded.com. FreeRTOS comes top in embedded.com survey (see last paragraph in link)! FreeRTOS Interactive has been launched. The first part of its roll out allows users to both upload and download individual user contributed projects. User contributed projects have therefore been removed from the main FreeRTOS download, which is now at version 6.0.4. This permits the official (and supported) FreeRTOS download to significantly decrease in size. V6.0.4 also contains the first Energy Micro EFM32 demo application. FreeRTOS now supports the SuperH from Renesas - complete with embedded web server demo application for the SH7216. A new Cortex-M3 / LPC17xx edition of the FreeRTOS eBook "Using The FreeRTOS Real Time Kernel - A Practical Guide" has been released. FreeRTOS V6.0.0, the first version to integrate memory protection support, is now available for free download. See the press release for an overview. Microchip publish an application note showing how to integrate their libraries and stacks with FreeRTOS. FreeRTOS V5.4.2 is now available and includes the first official port and demo application targeting the Nios II soft core from Altera. Fujitsu launch new FreeRTOS development kits. FreeRTOS will have a stand and be presenting at this years Microchip Masters conference. FreeRTOS V5.4.0 Now Available: - Improved byte alignment support plus new demos for NXP LPC1768 and Xilinx/PowerPC 440 processors. FreeRTOS V5.3.1 Now Available: - adds web server demos for both the STM32F107 ARM Cortex-M3 Connectivity Line and the MCF51cn128 ColdFire V1 microcontrollers. FreeRTOS.orgtm V5.3.0 Now Available: Adds Atmel SAM3 and NXP LPC1700 ARM Cortex-M3 demos plus introduces the new Run Time Stats feature. FreeRTOS.orgTM V5.2.0 Now Available: With a new faster queue and semaphore implementation. V5.2.0 is completely backward compatible with previous 5.x.x releases. New FreeRTOS documentation available - "Using the FreeRTOS Real Time Kernel, a Practical Guide" eBook. Martina Hafner interviews Richard Barry at the ESE Congress (interview is in English). SafeRTOS is short-listed for "embedded systems product of the year" at the 2008 Elektra awards. The FreeRTOS kernel aware Eclipse plug-in is demonstrated on the Freescale stand at this years Electronica trade fare. FreeRTOS.org, OpenRTOS and SafeRTOS in the news: WITTENSTEIN announce OpenRTOS Connect a set of USB Device, USB Host and File System components for FreeRTOS and OpenRTOS. WITTENSTEIN announce SafeRTOS for ARM Cortex-M3 NEC announce FreeRTOS support for both their 16 and 32 bit devices. Red Suite V1.6.2 released - including FreeRTOS kernel aware plug-in. Code Red announce Code Suite - a new Eclipse based IDE that includes a FreeRTOS wizard. Fujitsu announce their support for the FreeRTOS suite of products. Elektronik Praxis article on using Eclipse with FreeRTOS and OpenOCD. An English version is also available in pdf format. Feature article published describing the compiler verification technique used during the development of SafeRTOS. Embedded Systems Design Europe discusses FreeRTOS in its editorial, and includes a news item. EDN reports on IEC 61508 certification for SafeRTOS. Elektronik Praxis reports on availability of support packages. ETN - something in Swedish. I hope it only says good things! [1] [2] Embedded Control Europe report on the announcements of SafeRTOS and OpenRTOS respectively. Other / Older news: FreeRTOS.orgTM V5.1.2 Now Available: With new ports and demos - including NEC V850ES, NEC 78K0R and AT91SAM9XE. FreeRTOS.orgTM V5.1.1 Now Available: Includes a new GCC and Eclipse based embedded web server demo for the ColdFire MCF52233. FreeRTOS.orgTM V5.1.0 Now Available: New ports include ColdFire V2 using CodeWarrior and ARM7 LPC2129 using Keil/RVDS. MSP430 ports now fully support low power modes. The MPLAB IDE now includes a kernel aware FreeRTOS state viewer for PIC32, PIC24 and dsPIC as standard. FreeRTOS.orgTM V5.0.4 Now Available: The ColdFire V2 port has been completely re-written and now comes with a new Eclipse based GCC demo application. FreeRTOS.orgTM V5.0.3 Now Available: Highlights include an upgrade to the ARM Cortex-M3 port functionality, and the inclusion of user contributed projects (listed under 'unsupported' in the download). Quantum Leaps release QDKTM for FreeRTOS.org. FreeRTOS.orgTM V5.0.2 Now Available: Highlights include: A major upgrade to the Microchip PIC32 port functionality, and new RTOS support for the Xilinx PowerPC floating point unit (FPU). FreeRTOS.orgTM V5.0.0 Now Available: Improves the queue and semaphore interrupt safe API - please see Upgrading to V5.0.0 for important upgrade information. Adds support for the latest LM3S3768 and LM3S3748 microcontrollers from Luminary Micro. Virtex4 PowerPC demo upgraded to use V10.1 of the Xilinx EDK. Adds new task hook functionality. FreeRTOS.orgTM V4.8.0 Now Available: Includes new stack overflow checking features plus some new API functions. Masters 2008: For the second year running, FreeRTOS will be presenting RTOS training classes at the Microchip Masters worldwide conference in Phoenix, Az. FreeRTOS.orgTM V4.7.2 Now Available: Adds two new ports - both for Fujitsu microcontrollers. The first is for the 32bit MB91460 series, and the second for the 16bit MB96340 (16FX) series. FreeRTOS.orgTM V4.7.1 Now Available: Adds new recursive semaphore feature and updates all IAR ARM ports to use the IAR Embedded Workbench V5.11 project format. FreeRTOS.orgTM V4.7.0 Now Available: Adds new counting semaphore macros, an alternative queue API, and includes the SAM7X Eclipse and STM32 Primer demos within the main .zip file download. FreeRTOS.orgTM V4.6.1 now available: Adds a port and demo application for Microchips brand new high performance 32bit microcontroller family, the PIC32. Based on a MIPS M4K core. Read the press release here. FreeRTOS.orgTM V4.6.0 now available: The method used to cause a context switch within an ISR has changed for ARM7/9 GCC ports only. This unfortunately is not backward compatible with the old method, but does mean no further changes will be required in the future. See the "RTOS Configuration and Usage Details" section of the documentation page relevant to your port for full instructions. All the ARM7 GCC demo applications have also been updated to demonstrate the new method. FreeRTOS.orgTM V4.5.0 now available: See the version history for full information. Highlights include: Extended queue API. Introduction of mutexes (priority inheritance mechanism for the existing binary semaphore implementation). Demo applications for the new LM3S1962 and LM3S8962 evaluation kits from Luminary Micro. Pre-configured Eclipse Europa projects for ARM7 and ARM Cortex-M3 using OpenOCD - with step by step setup instructions. Improved ARM Cortex-M3 context switching code. lwIP demo for the STR912. FreeRTOS.orgTM V4.4.0 now available: Updates the AVR32 UC3A ports, adds a port for the AVR32 UC3B, and includes some kernel improvements. FreeRTOS.orgTM V4.3.1 now available: V4.3.1 adds a demo application for the STMicroelectronics STM32 ARM Cortex-M3 microcontroller - reinforcing FreeRTOS.org's position as the choice for the ARM Cortex-M3 core. FreeRTOS.orgTM V4.3.0 now available: V4.3.0 includes demo applications for the new Ethernet and CAN enabled ARM Cortex-M3 processors from Luminary Micro. In addition the ARM Cortex-M3, PIC24 and dsPIC DSC ports have been updated to demonstrate a more flexible interrupt management scheme. FreeRTOS.orgTM V4.2.1 now available: V4.2.1 introduces the AT32UC3A AVR32 port and demo applications. Ports and demo applications are provided for both the GCC and IAR development tools. Embedded TCP/IP examples are also provided for GCC. New LPC2368 demo: Includes a embedded web server demo based on the uIP TCP/IP stack. FreeRTOS.orgTM V4.2.0 now available: V4.2.0 includes some modifications to the RTOS kernel that are a direct output of the SafeRTOS development. V4.2.0 also extends support for the Luminary Micro ARM Cortex-M3 based LM3S811 evaluation board, with Keil, IAR and GCC demos now included. FreeRTOS.orgTM V4.1.3 now available: Includes new ports and demos for: Microchip PIC24 Microchip dsPIC® DCS STMicroelectronics STR750 (ARM7) with IAR tools STMicroelectronics STR750 (ARM7) with RIDE tools The latest ColdFire files are also now included in the zip file download. FreeRTOS.orgTM V4.1.1 now available: Adds a demo for the Luminary Micro LM3S811 Evalutaion Kit. FreeRTOS.orgTM V4.1.0 now available: Improves functionality for message queues. New demo added: For the Rowley CrossFire LPC2138 ARM7 embedded evaluation board. FreeRTOS.orgTM V4.0.4 now available: Introduces an STR9 ARM9 port with embedded web server demo. FreeRTOS.orgTM V4.0.3 now available: Adds IAR support for ARM Cortex-M3. New support packages: Professional development and support packages are now available. The FreeRTOS V4.x.x download includes pre-configured demo applications for Luminary Micros new ARM Cortex-M3 based LM3S102 embedded microcontroller. The LM3S10x was the first commercially available ARM Cortex-M3 microcontroller, and FreeRTOS was the first ARM Cortex-M3 real time kernel available for production silicon! See the press release here. In addition FreeRTOS V4.0.0 introduces co-routines - a new feature especially suited to RAM constrained embedded systems.