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Diffstat (limited to 'readme.txt')
| -rw-r--r-- | readme.txt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/readme.txt b/readme.txt index b00db6498..47e4c16e7 100644 --- a/readme.txt +++ b/readme.txt @@ -40,6 +40,17 @@ AVR-AT90CANx-GCC - Port on AVR AT90CAN128, not complete yet. *****************************************************************************
*** 0.5.1 ***
+- NEW: Priority enqueing for messages can be optionally enabled by specifying
+ the P_MSGBYPRIO option when creating a server thread.
+ This change allows the implementation of a priority ceiling protocol into
+ message servers threads. Threads serving messages by priority and threads
+ serving messages in FIFO orded can exist at the same time in the system.
+ This feature can be enabled or disabled by removing the option
+ CH_USE_MESSAGES_PRIORITY into the chconf.h file.
+ Note: This option brings a small overhead when sending a message regardless
+ if in FIFO or priority order, if you dont need priority ordering for your
+ messages it is better disable the feature in chconf.h. It also saves some
+ space.
- Added to the ARM demos load scripts the capability to load code in RAM
instead flash, the function must be marked as:
__attribute__((section(".ramtext")))
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