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apps 2014-08-04 1 weekly downloads
lib 2014-08-04
sys 2014-08-04
uip-icmp6.c 2014-02-02 10.2 kB 0
uip-split.c 2014-02-01 5.4 kB 11 weekly downloads
uip-neighbor.h 2014-02-01 2.3 kB 0
uip-neighbor.c 2014-02-01 4.9 kB 0
uip-nd6.h 2014-02-01 21.1 kB 0
uip-nd6.c 2014-02-01 33.8 kB 0
uip-icmp6.h 2014-02-01 5.0 kB 0
uiplib.h 2014-02-01 2.7 kB 0
uiplib.c 2014-02-01 4.4 kB 0
uip-fw.h 2014-02-01 5.0 kB 0
uip-fw.c 2014-02-01 14.5 kB 0
uip-ds6-route.c 2014-02-01 12.0 kB 0
uip-ds6.h 2014-02-01 12.8 kB 0
uip-ds6.c 2014-02-01 29.9 kB 0
uip-arp.c 2014-02-01 15.6 kB 0
uip-arch.h 2014-02-01 4.4 kB 0
uip6.c 2014-02-01 78.9 kB 0
uip.c 2014-02-01 62.6 kB 11 weekly downloads
slipdev.h 2014-02-01 2.9 kB 0
slipdev.c 2014-02-01 5.8 kB 0
psock.c 2014-02-01 10.5 kB 11 weekly downloads
network.c 2014-02-01 2.9 kB 11 weekly downloads
uip-ds6-route.h 2013-08-23 5.0 kB 0
uip6-doc.txt 2013-08-21 16.4 kB 11 weekly downloads
uip-split.h 2013-08-21 3.5 kB 0
uIP Reference Manual v1.0.pdf 2013-08-10 1.4 MB 22 weekly downloads
uip-doc.txt 2013-08-07 50.8 kB 11 weekly downloads
Documentation and download available at http://www.FreeRTOS.org/ Changes between V7.6.0 and V8.0.0rc2 (Release Candidate 2) released 5th Jan 2014 http://www.freertos.org/upgrading-to-FreeRTOS-V8.html FreeRTOS V8.0.0 Release Candidate #2 has been made available to allow partners and end users the opportunity to provide comments and feedback prior to the official V8.0.0 release. No changes to the core kernel code (the source files in the FreeRTOS/Source directory tree) are planned prior to the final release. However, the trace recorder library will be updated before the final release, and code in the demo project directories may be updated to use the new typedef names before the final release (currently the demo applications continue to use the old typedef names to test backward compatibility). FreeRTOS V8.x.x is a drop-in compatible replacement for FreeRTOS V7.x.x, although a change to the type used to reference character strings may result in application code generating a few (easily clearable) compiler warnings after the upgrade, and an updated typedef naming convention means use of the old typedef names is now discouraged. See http://www.freertos.org/upgrading-to-FreeRTOS-V8.html for full information. New features and functionality: + Event groups - see http://www.freertos.org/FreeRTOS-Event-Groups.html + Centralised deferred interrupt processing - see http://www.freertos.org/xTimerPendFunctionCallFromISR.html Other updates: + Previously, when a task left the Blocked state, a context switch was performed if the priority of the unblocked task was greater than or equal to the priority of the Running task. Now a context switch is only performed if the priority of the unblocked task is greater than the priority of the Running task. + New low power tickless demonstration project that targets the ST STM32L microcontroller - see http://www.freertos.org/STM32L-discovery-low-power-tickless-RTOS-demo.html + Add xPortGetMinimumEverFreeHeapSize() to heap_4.c. + Small change to the tickless low power implementation on the SAM4L to ensure the alarm value (compare match value) cannot be set to zero when a tickless period is exited due to an interrupt originating from a source other than the RTOS tick. + Update the GCC/Eclipse Win32 simulator demo to make better use of Eclipse resource filters and match the functionality of the MSVC equivalent. Changes between V7.5.3 and V7.6.0 released 18th November 2013 V7.6.0 changes some behaviour when the co-operative scheduler is used (when configUSE_PREEMPTION is set to 0). It is important to note that the behaviour of the pre-emptive scheduler is unchanged - the following description only applies when configUSE_PREEMPTION is set to 0: WHEN configUSE_PREEMPTION IS SET TO 0 (which is in a small minority of cases) a context switch will now only occur when a task places itself into the Blocked state, or explicitly calls taskYIELD(). This differs from previous versions, where a context switch would also occur when implicitly moving a higher priority task out of the Blocked state. For example, previously, WHEN PREEMPTION WAS TURNED OFF, if task A unblocks task B by writing to a queue, then the scheduler would switch to the higher priority task. Now, WHEN PREEMPTION IS TURNED OFF, if task A unblocks task B by writing to a queue, task B will not start running until task A enters the Blocked state or task A calls taskYIELD(). [If configUSE_PREEMPTION is not set to 0, so the normal pre-emptive scheduler is being used, then task B will start running immediately that it is moved out of the Blocked state]. Other changes: + Added a port layer and a demo project for the new PIC32MZ architecture. + Update the PIC32MX port layer to re-introduce some ehb instructions that were previously removed, add the ability to catch interrupt stack overflows (previously only task stack overflows were trapped), and also add the ability to catch an application task incorrectly attempting to return from its implementing function. + Make dramatic improvements to the performance of the Win32 simulator port layer. + Ensure tasks that are blocked indefinitely report their state as Blocked instead of Suspended. + Slight improvement to the Cortex-M4F port layers where previously one register was inadvertently being saved twice. + Introduce the xSemaphoreCreateBinary() API function to ensure consistency in the semantics of how each semaphore type is created. It is no longer recommended to use vSemaphoreCreateBinary() (the version prefixed with a 'v'), although it will remain in the code for backward compatibility. + Update the Cortex-M0 port layers to allow the scheduler to be started without using the SVC handler. + Added a build configuration to the PIC32MX MPLAB X demo project that targets the PIC32 USB II starter kit. Previously all the build configurations required the Explorer 16 hardware. + Some of the standard demo tasks have been updated to ensure they execute correctly with the updated co-operative scheduling behaviour. + Added comprehensive demo for the Atmel SAM4E, including use of FreeRTOS+UDP, FreeRTOS+FAT SL and FreeRTOS+CLI. FreeRTOS+ Changes: + Minor maintenance on FreeRTOS+UDP. Changes between V7.5.2 and V7.5.3 released October 14 2013 Kernel changes: + Prior to V7.5.x yields requested from the tick hook would occur in the same tick interrupt - revert to that original behaviour. + New API function uxQueueSpacesAvailable(). + Introduced the prvTaskExitError() function to Cortex-M0, Cortex-M3/4 and Cortex-M4F ports. prvTaskExitError() is used to trap tasks that attempt to return from their implementing functions (tasks should call vTaskDelete( NULL ); if they want to exit). + The Cortex-M0 version of portSET_INTERRUPT_MASK_FROM_ISR and portCLEAR_INTERRUPT_MASK_FROM_ISR are now fully nestable. + Improved behaviour and robustness of the default Cortex-M tickless idle behaviour. + Add workaround for silicon errata PMU_CM001 in Infineon XMC4000 devices to all Cortex-M4F ports. + Add Cortex-M0 port for Keil. + Updated Cortus port. + Ensure _impure_ptr is initialised before the scheduler is started. Previously it was not set until the first context switch. FreeRTOS+ changes: + Update FreeRTOS+UDP to V1.0.1 - including direct integration of the FreeRTOS+Nabto task, improvements to the DHCP behaviour, and a correction to the test that prevents the network event hook being called on the first network down event. The FreeRTOS+UDP change history is maintained separately. + Correct the __NVIC_PRIO_BITS setting in the LPC18xx.h header files provided in the NXP CMSIS library, then update the interrupts used by the LPC18xx demos accordingly. + Replace double quotes (") with single quotes (') in FreeRTOS+CLI help strings to ensure the strings can be used with the JSON descriptions used in the FreeRTOS+Nabto demos. Demo and miscellaneous changes: + Added demo for the Atmel SAMD20 Cortex-M0+. The demo includes FreeRTOS+CLI + Added a demo for the Infineon Cortex-M0 that can be built with the IAR Keil and GCC tools. + Updated the Infineon XMC4000 demos for IAR, Keil, GCC and Tasking tools, with additional build configurations to directly support the XMC4200 and XMC4400 devices, in addition to the previously supported XMC4500. + Updated the demo application. + Added additional trace macros traceMALLOC and traceFREE to track heap usage. Changes between V7.5.0 and V7.5.2 released July 24 2013 V7.5.2 makes the new Cortex-M vPortCheckInterruptPriority() function compatible with the STM32 standard peripheral driver library, and adds an extra critical section to the default low power tickless mode implementation. Only users of the STM32 peripheral library or the default tickless implementation need update from version 7.5.0. Changes between V7.4.2 and V7.5.0 released July 19 2013 V7.5.0 is a major upgrade that includes multiple scheduling and efficiency improvements, and some new API functions. Compatibility information for FreeRTOS users: FreeRTOS V7.5.0 is backward compatible with FreeRTOS V7.4.0 with one exception; the vTaskList() and vTaskGetRunTimeStats() functions are now considered legacy, having been replaced by the single uxTaskGetSystemState() function. configUSE_STATS_FORMATTING_FUNCTIONS must be set to 1 in FreeRTOSConfig.h for vTaskList() and vTaskGetRunTimeStats() to be available. Compatibility information for FreeRTOS port writers: vTaskIncrementTick() is now called xTaskIncrementTick() (because it now returns a value). Headline changes: + Multiple scheduling and efficiency improvements. + Core kernel files now pass PC-Lint V8 static checking without outputting any warnings (information on the test conditions will follow). New API functions: + uxTaskGetSystemState() http://www.freertos.org/uxTaskGetSystemState.html + xQueueOverwrite() http://www.freertos.org/xQueueOverwrite.html + xQueueOverwriteFromISR() + xQueuePeekFromISR() The following ports and demos, which were previously available separately, are now incorporated into the main FreeRTOS zip file download: + ARM Cortex-A9 IAR + ARM Cortex-A9 ARM compiler + Renesas RZ + Microsemi SmartFusion2 New FreeRTOSConfig.h settings http://shop.freertos.org/FreeRTOS_API_and_Configuration_Reference_s/1822.htm + configUSE_TIME_SLICING + configUSE_NEWLIB_REENTRANT + configUSE_STATS_FORMATTING_FUNCTIONS + configINCLUDE_APPLICATION_DEFINED_PRIVILEGED_FUNCTIONS Other changes: + (MPU port only) The configINCLUDE_APPLICATION_DEFINED_PRIVILEGED_FUNCTIONS options provides a mechanism that allows application writers to execute certain functions in privileged mode even when a task is running in user mode. + Ports that support interrupt nesting now include a configASSERT() that will trigger if an interrupt safe FreeRTOS function is called from an interrupt that has a priority designated as above the maximum system/API call interrupt priority. + The included FreeRTOS+Trace recorder code has been updated to the latest version, and the demo applications that use the trace recorder code have been updated accordingly. + The FreeRTOS Windows Simulator (MSVC version only) has been updated to include a new basic 'blinky' build option in addition to the original comprehensive build option. + Improve RAM usage efficiency of heap_4.c and heap_2.c. + Prevent heap_4.c from attempting to free memory blocks that were not allocated by heap_4.c, or have already been freed. + As FreeRTOS now comes with FreeRTOS+FAT SL (donated by HCC) the Chan FATfs files have been removed from FreeRTOS/Demo/Common. + Fix build error when R4 port is build in co-operative mode. + Multiple port and demo application maintenance activities. Changes between V7.4.1 and V7.4.2 released May 1 2013 NOTE: There are no changes in the FreeRTOS kernel between V7.4.1 and V7.4.2 + Added FreeRTOS+FAT SL source code and demo project. The demo project runs in the FreeRTOS Windows simulator for easy and hardware independent experimentation and evaluation. See http://www.FreeRTOS.org/fat_sl Changes between V7.4.0 and V7.4.1 released April 18 2013 + To ensure strict conformance with the spec and ensure compatibility with future chips data and instruction barrier instructions have been added to the yield macros of Cortex-M and Cortex-R port layers. For efficiency the Cortex-M port layer "yield" and "yield" from ISR are now implemented separately as the barrier instructions are not required in the ISR case. + Added FreeRTOS+UDP into main download. + Reorganised the FreeRTOS+ directory so it now matches the FreeRTOS directory with Source and Demo subdirectories. + Implemented the Berkeley sockets select() function in FreeRTOS+UDP. + Changed (unsigned) casting in calls to standard library functions with (size_t) casting. + Added the Atmel SAM4L and Renesas RX100 demos that demonstrates the tickless (tick suppression) low power FreeRTOS features. + Add a new RL78 IAR demo that targets numerous new RL78 chips and evaluation boards. + Adjusted stack alignment on RX200 ports to ensure an assert was not falsely triggered when configASSERT() is defined. + Updated the Cortex_M4F_Infineon_XMC4500_IAR demo to build with the latest version of EWARM. + Corrected header comments in the het.c and het.h files (RM48/TMS570 demo). Changes between V7.3.0 and V7.4.0 released February 20 2013 + New feature: Queue sets. See: http://www.FreeRTOS.org/Pend-on-multiple-rtos-objects.html + Overhauled the default tickless idle mode implementation provided with the ARM Cortex-M3 port layers. + Enhanced tickless support in the core kernel code with the introduction of the configEXPECTED_IDLE_TIME_BEFORE_SLEEP macro and the eTaskConfirmSleepModeStatus() function. + Added the QueueSet.c common demo/test file. Several demo applications have been updated to use the new demo/test tasks. + Removed reliance on the PLIB libraries from the MPLAB PIC32 port layer and demo applications. + Added the FreeRTOS+Trace recorder code to the MSVC Win32 demo. + Renamed eTaskStateGet() to eTaskGetState() for consistency, and added a pre-processor macro for backward compatibility with the previous name. + Updated functions implemented in the core queue.c source file to allow queue.h to be included from the .c file directly (this prevents compiler warnings that were generated by some compilers). + Updated the CCS Cortex-R4 port layer to replace the CLZ assembler function with the CLZ compiler intrinsic that is provided by the latest versions of the CCS ARM compiler. + Updated all heap_x.c implementations to replace the structure that was used to ensure the start of the heap was aligned with a more portable direct C code implementation. + Added support for PIC24 devices that include EDS. + Minor optimisations to the PIC32 port layer. + Minor changes to tasks.c that allow the state viewer plug-ins to display additional information. + Bug fix: Update prvProcessReceivedCommands() in timers.c to remove an issue that could occur if the priority of the timer daemon task was set below the priority of tasks that used timer services. + Update the FreeRTOS+Trace recorder code to the latest version. Changes between V7.2.0 and V7.3.0 released October 31 2012 + Added ability to override the default scheduler task selection mechanism with implementations that make use of architecture specific instructions. + Added ability to suppress tick interrupts during idle time, and in so doing, provide the ability to make use of architecture specific low power functionality. + Added the portSUPPRESS_TICKS_AND_SLEEP() macro and vTaskStepTick() helper function. + Added the configSYSTICK_CLOCK_HZ configuration constant. + Reworked the Cortex-M3 and Cortex-M4F port layers for GCC, Keil and IAR to directly support basic power saving functionality. + Added hooks to allow basic power saving to be augmented in the application by making use of chip specific functionality. + Minor change to allow mutex type semaphores to be used from interrupts (which would not be a normal usage model for a mutex). + Change the behaviour of the interrupt safe interrupt mask save and restore macros in the Cortex-M ports. The save macro now returns the previous mask value. The restore macro now uses the previous mask value. These changes are not necessary for the kernel's own implementation, and are made purely because the macros were being used by application writers. + Added eTaskStateGet() API function. + Added port specific optimisations to the PIC32 port layer, and updated the PIC32 demo applications to make use of this new feature. + Added port specific optimisations to the Win32 simulator port. + Added new ports and demo applications for the TI Hercules RM48 and TMS570 safety microcontrollers. + Added SAM3 demos targeting the ATSAM3S-EK2 and ATSAM3X-EK evaluation boards. + Updated the PIC32 MPLAB X project to manually set the compiler include paths instead of using the IDE entry box following reports that the include paths were somehow being deleted. + Improved character handling in FreeRTOS+CLI. Changes between V7.1.1 and V7.2.0 released 14 August 2012 FreeRTOS V7.2.0 is backward compatible with FreeRTOS V7.1.2. + Added a FreeRTOS+ sub-directory. The directory contains some FreeRTOS+ source code, and example projects that use the FreeRTOS Win32 simulator. + Added a new example heap allocation implementation (heap_4.c) that includes memory block coalescence. + Added a demo that targets the Atmel SAM4S Cortex-M4 based microcontroller. The demo is preconfigured to build using the free Atmel Studio 6 IDE and GCC compiler. + Added xSemaphoreTakeFromISR() implementation. + The last parameter in ISR safe FreeRTOS queue and semaphore functions (xHigherPriorityTaskWoken) is now optional and can be set to NULL if it is not required. + Update the IAR and MSP430X ports to clear all lower power mode bits before exiting the tick interrupt [bug fix]. + Allow xQueueReset() to be used, even when the queues event lists are not empty. + Added a vQueueDelete() handler for the FreeRTOS MPU port (this was previously missing). + Updated the vPortSVCHandler() functions in the FreeRTOS MPU port layer to ensure it compiles with the latest ARM GCC compilers from Linaro. + Updated the prvReadGP() function in the NIOS II port to ensure the compiler can choose any register for the functions parameter (required at high compiler optimisation levels). + Add #error macros into the Keil and IAR Cortex-M ports to ensure they cannot be built if the user has set configMAX_SYSCALL_INTERRUPT_PRIORITY to 0. + Added comments in the FreeRTOSConfig.h files associated with Cortex-M3 and Cortex-M4 demos stating that the configMAX_SYSCALL_INTERRUPT_PRIORITY parameter must not be set to 0. + Introduce new INCLUDE_xQueueGetMutexHolder configuration constant (defaulted to 0). + Added two new list handling macros - for internal use only in upcoming new products. + Removed all mention of the legacy vTaskStartTrace and ulTaskEndTrace macros. FreeRTOS+Trace supersedes the legacy trace. + Added a configASSERT() into the vPortFree() function in heap_1.c as it is invalid for the function to be called. + Made the xRxLock and xTxLock members of the queue structure volatile. This is probably not necessary, and is included as a precautionary measure. + Modify the assert() that checks to see if the priority passed into an xTaskCreate() function is within valid bounds to permit the assert to be used in the FreeRTOS MPU port. + The software timer service (daemon) task is now created in a way that to ensure compatibility with FreeRTOS MPU. Changes between V7.1.0 and V7.1.1 released May 1 2012 New ports: The following ports are brand new: + Cortex-M3 Tasking The following ports have been available as separate downloads for a number of months, but are now included in the main FreeRTOS download. + Cortex-M0 IAR + Cortex-M0 GCC + Cortex-M4F GCC (with full floating point support) New demos: The following demos are brand new: + Renesas RX63N RDK (Renesas compiler) The following demos have been available as separate downloads for a number of months, but are now included in the main FreeRTOS download. + NXP LPC1114 GCC/LPCXpresso + ST STM32F0518 IAR + Infineon XMC4500 GCC/Atollic + Infineon XMC4500 IAR + Infineon XMC4500 Keil + Infineon XMC4500 Tasking Kernel miscellaneous / maintenance: + Introduced the portSETUP_TCB() macro to remove the requirement for the Windows simulator to use the traceTASK_CREATE() macro, leaving the trace macro available for use by FreeRTOS+Trace (http://www.FreeRTOS.org/trace). + Added a new trace macro, traceMOVE_TASK_TO_READY_STATE(), to allow future FreeRTOS+Trace versions to provide even more information to users. + Updated the FreeRTOS MPU port to be correct for changes that were introduced in FreeRTOS V7.1.0. + Introduced the xQueueReset() API function. + Introduced the xSemaphoreGetMutexHolder() API function. + Tidy up various port implementations to add the static key word where appropriate, and remove obsolete code. + Slight change to the initial stack frame given to the RX600 ports to allow them to be used in the Eclipse based E2Studio IDE without confusing GDB. + Correct the alignment given to the initial stack of Cortex-M4F tasks. + Added a NOP following each DINT instruction on MSP430 devices for strict conformance with the instructions on using DINT. + Changed the implementation of thread deletes in the Win32 port to prevent the port making use of the traceTASK_DELETE() trace macros - leaving this macro free for use by FreeRTOS+Trace. + Made some benign changes to the RX600 Renesas compiler port layer to ensure the code can be built to a library without essential code being removed by the linker. + Reverted the change in the name of the uxTaskNumber variable made in V7.1.0 as it broke the IAR plug-in. Demo miscellaneous / maintenance: + The command interpreter has now been formally released as FreeRTOS+CLI, and been moved out of the main FreeRTOS download, to instead be available from the FreeRTOS+ Ecosystem site http://www.FreeRTOS.org/plus. + flash_timer.c/h has been added to the list of standard demo tasks. This performs the same functionality as the flash.c tasks, but using software timers in place of tasks. + Upgraded the PIC32 demo as follows: Changes to how the library functions are called necessitated by the new compiler version, addition of MPLAB X project with PIC32MX360, PIC32MX460 and PIC32MX795 configurations, addition of simply blinky demo, updated FreeRTOSConfig.h to include more parameters, addition of hook function stubs. + The MSP430X IAR and CCS demos have been updated to ensure the power settings are correct for the configured CPU frequency. + Rowley CrossWorks projects have been updated to correct the "multiple definition of ..." warnings introduced when the toolchain was updated. + Updated various FreeRTOSConfig.h header files associated with projects that build with Eclipse to include a #error statement informing the user that the CreateProjectDirectoryStructure.bat batch file needs to be executed before the projects can be opened. + Renamed directories that included "CCS4" in their name to remove the '4' and instead just be "CCS". This is because the demo was updated and tested to also work with later Code Composer Studio versions. + Updated the TCP/IP periodic timer frequency in numerous uIP demos to be 50ms instead of 500ms. Changes between V7.0.2 and V7.1.0 released December 13 2011 New ports: + Cortex-M4F IAR port. + Cortex-M4F Keil/RVDS port. + TriCore GCC port. New demos: + NXP LPC4350 using the Keil MDK, and demonstrated on a Hitex development board. + ST STM32F407 using the IAR Embedded Workbench for ARM, and demonstrated on the IAR STM32F407ZG-SK starter kit. + Infineon TriCore TC1782, using the GCC compiler, demonstrated on the TriBoard TC1782 evaluation board. + Renesas RX630, using the Renesas compiler and HEW, demonstrated on an RX630 RSK (Renesas Starter Kit). Miscellaneous / maintenance: + Removed all calls to printf() from the K60/IAR Kinetis demo so the project can execute stand alone - without being connected to the debugger. + Completed the command interpreter framework. Command handlers now receive the entire command string, giving them direct access to parameters. Utility functions are provided to check the number of parameters, and return parameter sub-strings. + The previously documented fix for the bug in xTaskResumeFromISR() that effected (only) ports supporting interrupt nesting has now been incorporated into the main release. + The portALIGNMENT_ASSERT_pxCurrentTCB() definition has been added to allow specific ports to skip the second stack alignment check when a task is created. This is because the second check is not appropriate for some ports - including the new TriCore port where the checked pointer does not actually point to a stack. + The portCLEAN_UP_TCB() macro has been added to allow port specific clean up when a task is deleted - again this is required by the TriCore port. + Various other minor changes to ensure warning free builds on a growing number of microcontroller and toolchain platforms. This includes a (benign) correction to the prototype of the vApplicationStackOverflowHook() definition found in lots of recent demos. Trace system: + The legacy trace mechanism has been completely removed - it has been obsolete for the years since the trace macros were introduced. The configuration constant configUSE_TRACE_FACILITY is now used to optionally include additional queue and task information. The additional information is intended to make the trace mechanism more generic, and allow the trace output to provide more information. When configUSE_TRACE_FACILITY is set to 1: - the queue structure includes an additional member to hold the queue type, which can be base, mutex, counting semaphore, binary semaphore or recursive mutex. - the queue structure includes an additional member to hold a queue number. A trace tool can set and query the queue number for its own purposes. The kernel does not use the queue number itself. - the TCB structure includes an additional member to hold a task number number. A trace tool can set and query the task number for its own purposes. The kernel does not use the task number itself. + Queues and all types of semaphores are now automatically allocated their type as they are created. + Added two new trace macros - traceTASK_PRIORITY_INHERIT() and traskTASK_PRIORITY_DISINHERIT(). + Updated the traceQUEUE_CREATE_FAILED() macro to take a parameter that indicates the type of queue, mutex, or semaphore that failed to be created. + The position from which traceCREATE_MUTEX() is called has been moved from after the call to xQueueGenericSend() [within the same function] to before the call. This ensures the trace events occur in the correct order. + The value passed into tracePRIORITY_SET() has been corrected for the case where vTaskPrioritySet() is called with a null parameter. Changes between V7.0.1 and V7.0.2 released September 20 2011 New ports: + The official FreeRTOS Renesas RX200 port and demo application have been incorporated into the main FreeRTOS zip file download. + The official FreeRTOS Renesas RL78 port and demo application have been incorporated into the main FreeRTOS zip file download. + The official FreeRTOS Freescale Kinetis K60 tower demo application has been incorporated into the main FreeRTOS zip file download. This includes an embedded web server example. + A new Microblaze V8 port layer has been created to replace the older, now deprecated, port layer. The V8 port supports V8.x of the Microblaze IP, including exceptions, caches, and the floating point unit. A new Microblaze demo has also been added to demonstrate the new Microblaze V8 port layer. The demo application was created using V13.1 of the Xilinx EDK, and includes a basic embedded web server that uses lwIP V1.4.0. + The official FreeRTOS Fujitsu FM3 MB9A310 demo application has been incorporated into the main FreeRTOS zip file download. Projects are provided for both the IAR and Keil toolchains. API additions: + xTaskGetIdleTaskHandle() has been added. + xTaskGetTimerDaemonTaskHandle() has been added. + pcTaskGetTaskName() has been added. + vSemaphoreDelete() macro has been added to make it obvious how to delete a semaphore. In previous versions vQueueDelete() had to be used. + vTaskCleanUpResources() has been removed. It has been obsolete for a while. + portPOINTER_SIZE_TYPE has been introduced to prevent compiler warnings being generated when the size of a pointer does not match the size of the stack type. This will (has already) be used in new ports, but will not be retrofitted to existing ports until the existing port itself is updated. Other updates and news: + The core files have all been modified to tighten the coding standard even further. These are style, not functional changes. + All ARM7 port layers have been slightly modified to prevent erroneous assert() failures when tasks are created and configASSERT() is defined. + All ARM IAR projects have been updated to build with the latest V6.2.x versions of the IAR Embedded Workbench for ARM tools (EWARM). This was necessary due to a change in the way EWARM uses the CMSIS libraries. + The PIC32 port layer has been updated in preparation for V2 of the C32 compiler. + The old Virtex-4 Microblaze demo has been marked as deprecated. Please use the brand new Spartan-6 port and demo in its place. + The bones of a new generic command interpreter is located in FreeRTOS/Demo/Common/Utils/CommandInterpreter.c. This is still a work in progress, and not documented. It is however already in use. It will be documented in full when the projects that are already using it are completed. + A couple of new standard demos have been included. First, a version of flop.c called sp_flop.c. This is similar to flop.c, but uses single precision floats in place of double precision doubles. This allows the for testing ports to processors that have only single precision floating point units, and revert to using emulated calculations whenever a double is used. Second, comtest_strings.c has been included to allow the test of UART drivers when an entire string is transmitted at once. The previous comtest.c only used single character transmission and reception. + lwIP V1.4.0 is now included in the FreeRTOS/Demo/Common directory, and used by a couple of new demos. Changes between V7.0.0 and V7.0.1 released May 13 2011 + Added a Fujitsu FM3 demo application for both the IAR and Keil tool chains. + Added a SmartFusion demo application for all of the IAR, Keil and SoftConsole (GCC/Eclipse) tool chains. + Updated the RX600 port and demo applications to take into account the different semantics required when using the latest (V1.0.2.0) version of the Renesas compiler. + Modified the RX600 Ethernet driver slightly to make it more robust under heavy load, and updated the uIP handling task to make use of the FreeRTOS software timers. + Slightly changed the PIC32 port layer to move an ehb instruction in line with the recommendations of the MIPS core manual, and ensure 8 byte stack alignment is truly always obtained. + Changed the behaviour when tasks are suspended before the scheduler has been started. Before, there needed to be at least one task that was not in the suspended state. This is no longer the case. Changes between V6.1.1 and V7.0.0 released April 8 2011 FreeRTOS V7.0.0 is backward compatible with FreeRTOS V6.x.x Main changes: + Introduced a new software timer implementation. + Introduced a new common demo application file to exercise the new timer implementation. + Updated the Win32/MSVC simulator project to include the new software timer demo tasks and software timer tick hook test. Much simpler software timer demonstrations are included in the demo projects for both of the new ports (MSP430X with CCS4 and STM32 with TrueStudio). + Various enhancements to the kernel implementation in tasks.c. These are transparent to users and do not effect the pre-existing API. + Added calls to configASSERT() within the kernel code. configASSERT() is functionally equivalent to the standard C assert() macro, but does not rely on the compiler providing assert.h. Other changes: + Updated the MSP430X IAR port and demo project to include support for the medium memory model. + Added a demo project for the MSP430X that targets the MSP430X Discovery board and uses the Code Composer Studio 4 tools. This demo includes use of the new software timer implementation. + Added an STM32F100RB demo project that targets the STM32 Discovery Board and uses the TrueStudio Eclipse based IDE from Atollic. + Removed some compiler warnings from the PSoC demo application. + Updated the PIC32 port layer to ensure the configMAX_SYSCALL_INTERRUPT_PRIORITY constant works as expected no matter what its value is (within the valid range set by the microcontroller kernel). + Updated the PIC24, dsPIC and PIC32 projects so they work with the latest MPLAB compiler versions from Microchip. + Various cosmetic changes to prepare for a standards compliance statement that will be published after the software release. Changes between V6.1.0 and V6.1.1 released January 14 2011 + Added two new Windows simulator ports. One uses the free Microsoft Visual Studio 2010 express edition, and the other the free MingW/Eclipse environment. Demo projects are provided for both. + Added three demo projects for the PSoC 5 (CYAC5588). These are for the GCC, Keil, and RVDS build tools, and all use the PSoC Creator IDE. + Added a demo for the low power STM32L152 microcontroller using the IAR Embedded Workbench. + Added a new port for the MSP430X core using the IAR Embedded Workbench. + Updated all the RX62N demo projects that target the Renesas Demonstration Kit (RDK) to take into account the revered LED wiring on later hardware revisions, and the new J-Link debug interface DLL. + Updated all the RX62N demo projects so the IO page served by the example embedded web server works with all web browsers. + Updated the Red Suite projects to work with the up coming Red Suite release, and to use a more recent version of the CMSIS libraries. + Added the traceTAKE_MUTEX_RECURSIVE_FAILED() trace macro. + Removed the (pointless) parameter from the traceTASK_CREATE_FAILED() trace macro. + Introduced the portALT_GET_RUN_TIME_COUNTER_VALUE() macro to compliment the already existing portGET_RUN_TIME_COUNTER_VALUE(). This allows for more flexibility in how the time base for the run time statistics feature can be implemented. + Added a "cpsie i" instruction before the "svc 0" instruction used to start the scheduler in each of the Cortex M3 ports. This is to ensure that interrupts are globally enabled prior to the "svc 0" instruction being executed in cases where interrupts are left disabled by the C start up code. + Slight optimisation in the run time stats calculation. Changes between V6.0.5 and V6.1.0 released October 6 2010 + Added xTaskGetTickCountFromISR() function. + Modified vTaskSuspend() to allow tasks that have just been created to be immediately suspended even when the kernel has not been started. This allows them to effectively start in the Suspended state - a feature that has been asked for on numerous occasions to assist with initialisation procedures. + Added ports for the Renesas RX62N using IAR, GCC and Renesas tool suites. + Added a STM32F103 demo application that uses the Rowley tools. + Under specific conditions xFreeBytesRemaining within heap_2.c could end up with an incorrect value. This has been fixed. + xTaskCreateGeneric() has a parameter that can be used to pass the handle of the task just created out to the calling task. The assignment to this parameter has been moved to ensure it is assigned prior to the newly created having any possibility of executing. This takes into account the case where the assignment is made to a global variable that is accessed by the newly created task. + Fixed some build time compiler warnings in various FreeTCPIP (based on uIP) files. + Fixed some build time compiler warnings in Demo/Common/Minimal/IntQueue.c. Changes between V6.0.4 and V6.0.5 released May 17 2010 + Added port and demo application for the Cortus APS3 processor. Changes between V6.0.3 and V6.0.4 released March 14 2010 + All the contributed files that were located in the Demo/Unsupported_Demos directory have been removed. These files are instead now available in the new Community Contributions section of the FreeRTOS website. See http://www.freertos.org/RTOS-contributed-ports.html + The project file located in the Demo/CORTEX_STM32F107_GCC_Rowley directory has been upgraded to use V2.x of the Rowley Crossworks STM32 support package. + An initial Energy Micro EFM32 demo has been included. This will be updated over the coming months to make better use of the low power modes the EFM32 provides. Changes between V6.0.2 and V6.0.3 released February 26 2010 + SuperH SH7216 (SH2A-FPU) port and demo application added. + Slight modification made to the default implementation of pvPortMallocAligned() and vPortFreeAligned() macros so by default they just call pvPortMalloc() and vPortFree(). The macros are only needed to be defined when a memory protection unit (MPU) is being used - and then only depending on other configuration settings. Changes between V6.0.1 and V6.0.2 released January 9th 2010 + Changed all GCC ARM 7 ports to use 0 as the SWI instruction parameter. Previously the parameter was blank and therefore only an implicit 0 but newer GCC releases do not permit this. + Updated IAR SAM7S and SAM7X ports to work with IAR V5.40. + Changed the stack alignment requirement for PIC32 from 4 bytes to 8 bytes. + Updated prvListTaskWithinSingleList() is it works on processors where the stack grows up from low memory. + Corrected some comments. + Updated the startup file for the RVDS LPC21xx demo. Changes between V6.0.0 and V6.0.1 released November 15th 2009 + Altered pxPortInitialiseStack() for all Cortex-M3 ports to ensure the stack pointer is where the compiler expects it to be when a task first starts executing. The following minor changes only effect the Cortex-M3 MPU port: + portRESET_PRIVILEGE() assembly macro updated to include a clobber list. + Added prototypes for all the privileged function wrappers to ensure no compile time warnings are generated no matter what the warning level setting. + Corrected the name of portSVC_prvRaisePrivilege to portSVC_RAISE_PRIVILEGE. + Added conditional compilation into xTaskGenericCreate() to prevent some compilers issuing warnings when portPRIVILEGE_BIT is defined as zero. Changes between V5.4.2 and V6.0.0 released October 16th 2009 FreeRTOS V6 is backward compatible with FreeRTOS V5.x. Main changes: + FreeRTOS V6 is the first version to include memory protection unit (MPU) support. Two ports now exist for the Cortex M3, the standard FreeRTOS which does not include MPU support, and FreeRTOS-MPU which does. + xTaskCreateRestricted() and vTaskAllocateMPURegions() API functions added in support of FreeRTOS-MPU. + Wording for the GPL exception has been (hopefully) clarified. Also the license.txt file included in the download has been fixed (the previous version contained some corruption). Other changes: + New API function xPortGetFreeHeapSize() added to heap_1.c and heap_2.c. + ARM7 GCC demo interrupt service routines wrappers have been modified to call the C portion using an __asm statement. This prevents the function call being inlined at higher optimisation levels. + ARM7 ports now automatically set the THUMB bit if necessary when setting up the initial stack of a task - removing the need for THUMB_INTERWORK to be defined. This also allows THUMB mode and ARM mode tasks to be mixed more easily. + All ARM7/9 ports now have portBYTE_ALIGNMENT set to 8 by default. + Various demo application project files have been updated to be up to date with the latest IDE versions. + The linker scripts used with command line GCC demos have been updated to include an eh_frame section to allow their use with the latest Yagarto release. Likewise the demo makefiles have been updated to include command line options to reduce or eliminate the eh_frame section all together. + The definition of portBYTE_ALIGNMENT_MASK has been moved out of the various memory allocation files and into the common portable.h header file. + Removed unnecessary use of portLONG, portSHORT and portCHAR. + Added LM3Sxxxx demo for Rowley CrossWorks. + Posix simulator has been upgraded - see the corresponding WEB page on the FreeRTOS.org site. Changes between V5.4.1 and V5.4.2 released August 9th 2009 + Added a new port and demo app for the Altera Nios2 soft core. + Added LPC1768 demo for IAR. + Added a USB CDC demo to all LPC1768 demos (Code Red, CrossWorks and IAR). + Changed clock frequency of LPC1768 demos to 99MHz. Changes between V5.4.0 and V5.4.1 released July 25th 2009 + New hook function added. vApplicationMallocFailedHook() is (optionally) called if pvPortMalloc() returns NULL. + Additional casting added to xTaskCheckForTimeOut(). This prevents problems that can arise should configUSE_16_BIT_TICKS be set to 1 on a 32 bit architecture (which would probably be a mistake, anyway). + Corrected the parameter passed to NVIC_SetPriority() to set the MAC interrupt priority in both LPC1768 demos. + Decreased the default setting of configMINIMAL_STACK_SIZE in the PIC32 demo application to ensure the heap space was not completely consumed before the scheduler was started. Changes between V5.3.1 and V5.4.0 released July 13th 2009 + Added Virtex5 / PPC440 port and demos. + Replaced the LPC1766 Red Suite demo with an LPC1768 Red Suite demo. The original demo was configured to use engineering samples of the CPU. The new demo has an improved Ethernet driver. + Added LPC1768 Rowley demo with zero copy Ethernet driver. + Reworked byte alignment code to ensure 8 byte alignment works correctly. + Set configUSE_16_BIT_TICKS to 0 in the PPC405 demo projects. + Changed the initial stack setup for the PPC405 to ensure the small data area pointers are setup correctly. Changes between V5.3.0 and V5.3.1 released June 21st 2009 + Added ColdFire V1 MCF51CN128 port and WEB server demo. + Added STM32 Connectivity Line STM32107 Cortex M3 WEB server demo. + Changed the Cortex M3 port.c asm statements to __asm so it can be compiled using Rowley CrossWorks V2 in its default configuration. + Updated the Posix/Linux simulator contributed port. Changes between V5.2.0 and V5.3.0 released June 1st 2009 Main changes: + Added new (optional) feature that gathers statistics on the amount of CPU time used by each task. + Added a new demo application for the Atmel AT91SAM3U Cortex-M3 based microcontroller. + Added a new demo application for the NXP LPC1766 Cortex-M3 based microcontroller. + Added a contributed port/demo that allows FreeRTOS to be 'simulated' in a Linux environment. Minor changes: + Updated the Stellaris uIP WEB server demos to include the new run time statistics gathering feature - and include a served WEB page that presents the information in a tabular format. + Added in the lwIP port layer for the Coldfire MCF52259. + Updated the CrossWorks LPC2368 WEB server to include an image in the served content. + Changed some of the timing in the initialisation of the LPC2368 MAC to permit its use on all part revisions. + Minor modifications to the core uIP code to remove some compiler warnings. + Added xTaskGetApplicationTaskTag() function and updated the OpenWatcom demo to make use of the new function. + Added contributed demos for AVR32 AP7000, STM32 Primer 2 and STM32 using Rowley Crossworks. + Heap_1.c and Heap_2.c used to define structures for the purpose of data alignment. These have been converted to unions to save a few bytes of RAM that would otherwise be wasted. + Remove the call to strncpy() used to copy the task name into the TCB when the maximum task name is configured to be 1 byte long. Changes between V5.1.2 and V5.2.0 released March 14th 2009 + Optimised the queue send and receive functions (also used by semaphores). + Replaced the standard critical sections used to protect BIOS calls in the PC port to instead use scheduler locks. This is because the BIOS calls always return with interrupts enabled. + Corrected unclosed comments in boot.s. Changes between V5.1.1 and V5.1.2 released February 9th 2009 + Added NEC V850ES port and demo. + Added NEC 78K0R port and demo. + Added MCF52259 port and demo. + Added the AT91SAM9XE port and demo. + Updated the MCF52233 FEC driver to work around a silicon bug that prevents the part auto negotiating some network parameters. + Minor modifications to the MCF52233 makefile to permit it to be used on Linux hosts. + Updated the STM32 primer files to allow them to be built with the latest version of the RIDE tools. + Updated the threads.js Java script used for kernel aware debugging in the Rowley CrossWorks IDE. Changes between V5.1.0 and V5.1.1 released November 20, 2008 + Added Coldfire MCF52233 WEB server demo using GCC and Eclipse. + Added IAR MSP430 port and demo. + Corrected several compiler time issues that had crept in as tool versions change. + Included FreeRTOS-uIP - a faster uIP. This is not yet complete. Changes between V5.0.4 and V5.1.0 released October 24, 2008 + Added a new port and demo application for the ColdFire V2 core using the CodeWarrior development tools. + Replaced the ARM7 demo that used the old (and now no longer supported) Keil compiler with a new port that uses the new Keil/RVDS combo. + Stack overflow checking now works for stacks that grow up from low memory (PIC24 and dsPIC). + BUG FIX - set the PIC32 definition of portSTACK_GROWTH to the correct value of -1. + MSP430 port layers have been updated to permit tasks to place the microcontroller into power down modes 1 to 3. The demo applications have likewise been updated to demonstrate the new feature. + Replaced the two separate MSP430/Rowley port layers with a single and more flexible version. + Added more contributed ports, including ports for NEC and SAM9 microcontrollers. + Changed the linker script used in the LPC2368 Eclipse demo. Changes between V5.0.3 and V5.0.4 released September 22, 2008 + Completely re-written port for ColdFire GCC. + Bug fix: All Cortex M3 ports have a minor change to the code that sets the pending interrupt. + Some header files require that FreeRTOS.h be included prior to their inclusion. #error message have been added to all such header file informing users to the cause of the compilation error should the headers not be included in the correct order. Changes between V5.0.2 and V5.0.3 released July 31, 2008 Changes relating to the Cortex M3: + Added configMAX_SYSCALL_INTERRUPT_PRIORITY usage to all the Cortex M3 ports and demos. See the port documentation pages on the FreeRTOS.org WEB site for full usage information. + Improved efficiency of Cortex M3 port even further. + Ensure the Cortex M3 port works no matter where the vector table is located. + Added the IntQTimer demo/test tasks to a demo project for each CM3 port (Keil, GCC and IAR) to test the new configMAX_SYSCALL_INTERRUPT_PRIORITY functionality. + Added the mainINCLUDE_WEB_SERVER definition to the LM3SXXXX IAR and Keil projects to allow the WEB server to be conditionally excluded from the build and therefore allow use of the KickStart (code size limited) compiler version. Other changes: + Moved the PIC24 and dsPIC versions of vPortYield() from the C file to an assembly file to allow use with all MPLAB compiler versions. This also allows the omit-frame-pointer optimisation to be turned off. Changes between V5.0.0 and V5.0.2 released May 30, 2008 + Updated the PIC32 port to allow queue API calls to be used from interrupts above the kernel interrupt priority, and to allow full interrupt nesting. Task stack usages has also been reduced. + Added a new PowerPC port that demonstrates how the trace macros can be used to allow the use of a floating point co-processor. The traceTASK_SWITCHED_OUT() and traceTASK_SWITCHED_INT() macros are used to save and restore the floating point context respectively for those tasks that actually use floating point operations. + BUG FIX: The first PPC405 port contained a bug in that it did not leave adequate space above the stack for the backchain to be saved when a task started to execute for the first time. + Updated queue.c to add in the means to allow interrupt nesting and for queue API functions to be called from interrupts that have a priority above the kernel priority. This is only supported on PIC32 ports thus far. + Fixed the compiler warnings that were generated when the latest version of WinAVR was used. + Remove all inline usage of 'inline' from the core kernel code. + Added the queue registry feature. The queue registry is provided as a means for kernel aware debuggers to locate queue definitions. It has no purpose unless you are using a kernel aware debugger. The queue registry will only be used when configQUEUE_REGISTRY_SIZE is greater than zero. + Added the ST Cortex-M3 drivers into the Demo/Common/Drivers directory to prevent them from having to be included in multiple demos. + Added a Keil STM32 demo application. + Changed the blocktim.c test files as it is no longer legitimate for all ports to call queue API functions from within a critical section. + Added the IntQueue.c test file to test the calling of queue API functions from different interrupt priority levels, and test interrupt nesting. Changes between V5.0.0 and V5.0.1 + V5.0.1 was a customer specific release. Changes between V4.8.0 and V5.0.0 released April 15, 2008 *** VERY IMPORTANT INFORMATION ON UPGRADING TO FREERTOS.ORG V5.0.0 *** The parameters to the functions xQueueSendFromISR(), xQueueSendToFrontFromISR(), xQueueSendToBackFromISR() and xSemaphoreGiveFromISR() have changed. You must update all calls to these functions to use the new calling convention! Your compiler might not issue any type mismatch warnings! See http://www.FreeRTOS.org/upgrading.html for full information. Other changes: + Support added for the new Luminary Micro LM3S3768 and LM3S3748 Cortex-M3 microcontrollers. + New task hook feature added. + PowerPC demo updated to use version 10.1 of the Xilinx EDK. + Efficiency gains within the PIC32 port layer. Changes between V4.7.2 and V4.8.0 released March 26 2008 + Added a Virtex4 PowerPC 405 port and demo application. + Added optional stack overflow checking and new uxTaskGetStackHighWaterMark() function. + Added new xQueueIsQueueEmptyFromISR(), xQueueIsQueueFullFromISR() and uxQueueMessagesWaitingFromISR() API functions. + Efficiency improvements to the Cortex-M3 port layer. NOTE: This requires that an SVC handler be installed in the application. + Efficiency improvements to the queue send and receive functions. + Added new trace macros. These are application definable to provide a flexible trace facility. + Implemented the configKERNEL_INTERRUPT_PRIORITY within the Keil Cortex M3 port layer (bringing it up to the same standard as the IAR and GCC versions). + Ports that used the arm-stellaris-eabi-gcc tools have been converted to use the arm-non-eabi-gcc tools. Changes between V4.7.1 and V4.7.2 released February 21, 2008 + Added Fujitsu MB91460 port and demo. + Added Fujitsu MB96340 port and demo. + Tidied up the capitalisation of include files to facilitate builds on Linux hosts. + Removed some redundant casting that was generating warnings - but was included to remove warnings on other compilers. Changes between V4.7.0 and V4.7.1 released February 3, 2008 + Updated all IAR ARM projects to use V5.11 of the IAR Embedded Workbench for ARM. + Introduced recursive semaphore feature. + Updated LPC2368 demos to take into account silicon bugs in old chip revisions. + Updated STR9 uIP port to manually set the net mask and gateway addresses. + Updating demos to allow more to run with the co-operative scheduler. + Fixed co-operative scheduler behaviour upon the occurrence of a tick interrupt while the scheduler was suspended. + Updated documentation contained within semphr.h. + ARM7 GCC ports no longer use the IRQ attribute. Changes between V4.6.1 and V4.7.0 released December 6, 2007 + Introduced the counting semaphore macros and demo source files. The Open Watcom PC project has been updated to include the new demo. See the online documentation for more information. + Introduced the 'alternative' queue handling API and demo source files. The Open Watcom PC project has been updated to include the new demo source files. See the online documentation for more information. + Added AT91SAM7X Eclipse demo project. + Added the STM32 primer demo project for the GCC compiler and Ride IDE. + Removed the .lock files that were mistakenly included in the V4.6.1 eclipse workspaces. Changes between V4.6.0 and V4.6.1 released November 5 2007 + Added support for the MIPS M4K based PIC32. + Added 'extern "C"' to all the header files to facilitate use with C++. Changes between V4.5.0 and V4.6.0 released October 28 2007 + Changed the method used to force a context switch within an ISR for the ARM7/9 GCC ports only. The portENTER_SWITCHING_ISR() and portEXIT_SWITCHING_ISR() macros are no longer supported. This is to ensure correct behaviour no matter which GCC version is used, with or without the -fomit-frame-pointer option, and at all optimisation levels. + Corrected the prototype for xQueueGenericSend() within queue.h. Changes between V4.4.0 and V4.5.0 released September 17 2007 + Added the xQueueSendToFront(), xQueueSendToBack() and xQueuePeek() functionality. These should now be used in preference to the old xQueueSend() function - which is maintained for backward compatibility. + Added Mutex functionality. The behaviour of mutexes is subtly different to the already existing binary semaphores as mutexes automatically include a priority inheritance mechanism. + Added the GenQTest.c and QPeek.c to test and demonstrate the behaviour of the new functionality. + Updated the LM3Sxxxx and PC ports to include the new GenQTest.c and QPeek.c files. + Updated the GCC port for the Cortex M3 to include the configKERNEL_INTERRUPT_PRIORITY functionality. This was previously only included in the IAR port. + Optimised the GCC and IAR port layer code - specifically the context switch code. + Consolidated the LM3Sxxxx EK demos for all development tools into a single project that automatically detects which version of the EK the application is executing on. + Added Eclipse support for LM3Sxxxx evaluation kits. + Added Eclipse support for the Keil LPC2368 evaluation kit. + Added the Demo/Drivers directory to hold code that is common to multiple demo application projects. + Included some minor bug fixes in the uIP 1.0 code. + Added an lwIP demo for the STR9 - thanks ST for assistance. + Updated the AVR32 port to ensure correct behaviour with full compiler optimisation. + Included binaries for OpenOCD FTDI and parallel port interfaces. Changes between V4.4.0 and V4.3.1 released July 31, 2007 + Added AVR32 UC3B demo application. + Updated AVR32 UC3A port and demo applications. + Added IAR lwIP demo for AVR32 UC3A. + Updated listGET_OWNER_OF_NEXT_ENTRY() to assist compiler optimisation (thanks Niu Yong for making the suggestion). + Added xTaskGetSchedulerState() API function. + BUG FIX: Corrected behaviour when tasks that are blocked indefinitely have their block time adjusted (within xQueueSend() and xQueueReceive()), and are the subject of a call the vTaskResume() when they are not actually in the Suspended state (thanks Dan Searles for reporting the issues). Changes between V4.3.0 and V4.3.1 released June 11, 2007 + Added STMicroelectronics STM32 Cortex-M3 demo application. + Updated ustdlib.c for the GCC LM3S6965 demo. Changes between V4.2.1 and V4.3.0 released June 5, 2007 + Introduced configKERNEL_INTERRUPT_PRIORITY to the IAR Cortex-M3, PIC24 and dsPIC ports. See the LM3S6965 and PIC24 demo application documentation pages for more information. + Updated the PIC24 and dsPIC demos to build with V3.0 of the PIC30 GCC tools, and changed the demo applications. + Added demos for the new Ethernet and CAN enabled Luminary Micro Stellaris microcontrollers. + Corrected bug in uIP the demos that prevented frames of approximately 1480 bytes and over from being transmitted. + Included the LPC2368/uIP/Rowley demo into the main FreeRTOS.org download. + Update to WizC PIC18 port to permit its use with version 14 of the compiler. Thanks Marcel! Changes between V4.2.1 and V4.2.0 released April 2, 2007 + Added AVR32 AT32UC3A ports for GCC and IAR. + Added -fomit-frame-pointer option to lwIP SAM7X demo makefile. + Moved location of call to LCD_Init() in STR9 demo to ensure it is only called after the scheduler has been started. Changes between V4.1.3 and V4.2.0 released February 8, 2007 + Changes to both task.c and queue.c as a result of testing performed on the SafeRTOS code base. + Added Cortex-M3 LM3S811 demos for GCC and IAR tools. Changes between V4.1.2 and V4.1.3 released November 19, 2006 + Added STR750 ARM7 port using the Raisonance RIDE/GCC tools. + Added -fomit-frame-pointer option to Rowley ARM7 demos as work around to GCC bug at some optimisation levels. + Altered the way the heap is defined in the LM3S811 Keil demo to prevent the RAM usage from counting toward the code size limit calculation. + CO-ROUTINE BUG FIX: Removed the call to prvIsQueueEmpty from within xQueueCRReceive as it exited with interrupts enabled. Thanks Paul Katz. + Tasks that block on events with a timeout of portMAX_DELAY are now blocked indefinitely if configINCLUDE_vTaskSuspend is defined. Previously portMAX_DELAY was just the longest block time possible. This is still the case if configINCLUDE_vTaskSuspend is not defined. + Minor changes to some demo application files. Changes between V4.1.1 and V4.1.2 released October 21, 2006 + Added 16bit PIC ports and demos. + Added STR750 port and demo. Changes between V4.1.0 and V4.1.1 released September 24, 2006 + Added the Luminary Micro Stellaris LM3S811 demo application. Changes between V4.0.5 and V4.1.0 released August 28, 2006 + Prior to V4.1.0, under certain documented circumstances, it was possible for xQueueSend() and xQueueReceive() to return without having completed and without their block time expiring. The block time effectively stated a maximum block time, and the return value of the function needed to be checked to determine the reason for returning. This is no longer the case as the functions will only return once the block time has expired or they are able to complete their operation. It is therefore no longer necessary to wrap calls within loops. + Changed the critical section handling in the IAR AVR port to correct the behaviour when used with later compiler versions. + Added the LPC2138 CrossWorks demo into the zip file. Previously this was only available as a separate download. + Modified the AVR demo applications to demonstrate the use of co-routines. Changes between V4.0.4 and V4.0.5 released August 13, 2006 + Introduced API function xTaskResumeFromISR(). Same functionality as xTaskResume(), but can be called from within an interrupt service routine. + Optimised vListInsert() in the case when the wake time is the maximum tick count value. + Bug fix: The 'value' of the event list item is updated when the priority of a task is changed. Previously only the priority of the TCB itself was changed. + vTaskPrioritySet() and vTaskResume() no longer use the event list item. This has not been necessary since V4.0.1 when the xMissedYield handling was added. + Lowered the PCLK setting on the ARM9 STR9 demo from 96MHz to 48MHz. + When ending the scheduler - do not try to attempt a context switch when deleting the current task. + SAM7X EMAC drivers: Corrected the Rx frame length mask when obtaining the length from the rx descriptor. Changes between V4.0.3 and V4.0.4 released June 22, 2006 + Added a port and demo application for the STR9 ARM9 based processors from ST. + Slight optimisation to the vTaskPrioritySet() function. + Included the latest uIP version (1.0) in the demo/common/ethernet directory. Changes between V4.0.2 and V4.0.3 released June 7, 2006 + Added a port and demo application for the Cortex-M3 target using the IAR development tools. + The ARM Cortex-m3 Rowley projects have been updated to use V1.6 of the CrossStudio tools. + The heap size defined for the lwIP Rowley demo has been reduced so that the project will link correctly when using the command line GCC tools also. The makefile has also been modified to allow debugging. + The lwIP Rowley demo not includes a 'kernel aware' debug window. + The uIP Rowley project has been updated to build with V1.6 of CrossWorks. + The second set of tasks in the blockQ demo were created the wrong way around (inconsistent to the description in the file). This has been corrected. Changes between V4.0.1 and V4.0.2 released May 28, 2006 + Port and demo application added for the Tern Ethernet Engine controller. + Port and demo application added for MC9S12 using GCC, thanks to Jefferson "imajeff" Smith. + The function vTaskList() now suspends the scheduler rather than disabling interrupts during the creation of the task list. + Allow a task to delete itself by passing in its own handle. Previously this could only be done by passing in NULL. + Corrected the value passed to the WDG_PeriodValueConfig() library function in the STR71x demo. + The tick hook function is now called only within a tick isr. Previously it was also called when the tick function was called during the scheduler unlocking process. + The EMAC driver in the SAM7X lwIP demo has been made more robust as per the thread: http://sourceforge.net/forum/message.php?msg_id=3714405 + In the PC ports: Add function prvSetTickFrequencyDefault() to set the DOS tick back to its proper value when the scheduler exits. Thanks Raynald! + In the Borland x86 ports there was a mistake in the portFIRST_CONTEXT macro where the BP register was not popped from the stack correctly. The BP value would never get used so this did not cause a problem, but it has been corrected all the same. Changes between V4.0.0 and V4.0.1 released April 7 2006 + Improved the ARM CORTEX M3 ports so they now only have to service pendSV interrupts. + Added a Luminary Micro port and demo for use with Rowley CrossWorks. + Added the xMissedYield handling to tasks.c. Changes between V3.2.4 and V4.0.0 Major changes: + Added new RTOS port for Luminary Micros ARM CORTEX M3 microcontrollers. + Added new co-routine functionality. Other kernel changes: + An optional tick hook call is now included in the tick function. + Introduced the xMiniListItem structure and removed the list pxHead member in order to reduce RAM usage. + Added the following definitions to the FreeRTOSConfig.h file included with every port: configUSE_TICK_HOOK configUSE_CO_ROUTINES configMAX_CO_ROUTINE_PRIORITIES + The volatile qualification has been changed on the list members to allow the task.c code to be tidied up a bit. + The scheduler can now be started even if no tasks have been created! This is to allow co-routines to run when there are no tasks. + A task being woken by an event will now preempt the currently running task even if its priority is only equal to the currently running task. Port and demo application changes: + Updated the WinAVR demo to compile with the latest version of WinAVR with no warnings generated. + Changed the WinAVR makefile to make chars signed - needed for the co-routine code if portBASE_TYPE is set to char. + Added new demo application file crflash.c. This demonstrates co-routine functionality including passing data between co-routines. + Added new demo application file crhook.c. This demonstrates co-routine and tick hook functionality including passing data between and ISR and a co-routine. + Some NOP's were missing following stmdb{}^ instructions in various ARM7 ports. These have been added. + Updated the Open Watcom PC demo project to include the crflash and crhook demo co-routines as an example of their u
Source: readme2.txt, updated 2014-01-13