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considered legacy, having been replaced by the single uxTaskGetSystemState()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_...ence_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.