WhatOS Changes

2.0.3 (2006 Feb 26)

Minor bug fixes and documentation improvements.
New documentation page describing supported platforms and porting procedure.

2.0.2 (2005 May 28)

NEW FEATURE: Now works with Freescale (Motorola) HC08 and CodeWarrior. Removed all variadic macros from generated source code because of incompatibilities with CodeWarrior compiler. It is expected that this will improve compatibility with other compilers. NOTE: small backward incompatible changes to C API were required for this change wherever variadic macros were used; for example: emit(a) becomes emit(a, 0) for pure signals, TRACE("%i", 5), TRACE("%i, %i", 5, 6) become TRACE2("%i", 5), TRACE3("%i, %i", 5, 6) and so forth.
NEW FEATURE: Added a task uartslip which includes functionality of tasks pysliptx, pysliprx, uart, but operates much more efficiently. This improves performance when debugging with high data transfer rates; especially visible improvement on slower host machines.
NEW: Added flag to enable/disable uart. This is useful during debugging so you don't have to manually disconnect the serial cable.
FIXED: cpacker/cunpacker did not work properly with big-endian processors (e.g. HC08).
FIXED: pymonitor was not keeping track of timer wrap-around.
FIXED: Small bugs in TRACE/ASSERT mechanism.
Documentation much more complete.

2.0.1 (2004 Dec 16)

whatos.embedded packers/unpackers now increase packet size automatically by inspecting types of signals to be packed/unpacked.
whatos.embedded cpackers/cunpackers can be created from other cpackers/cunpackers.
Documentation additions/improvements.

2.0.0 (2004 Nov 29)

This version is completely redesigned using the prototype-based programming style. All backward compatibility is lost, but porting applications should be straight-forward. Below are most major changes:

NEW FEATURE: Completely redesigned event handling system. Fixed some major timing limitations. Interrupts are never disabled.
NEW FEATURE: Complete Python API redesign unifies C and Python tasks, as well as normal and automatically generated state machine tasks. API is much smaller and easier to learn and use. This new Python API is not backwards compatible with previous versions.
NEW FEATURE: Type mechanism redesigned to improve flexibility and ease of use:
- Type renaming, similar to signal renaming, allows automatic linking between compatible types.
- Automatic type casting at configuration time.
- Types may be generated on-the-fly during task configuration.
- Automatic C typedef source code generation of types.
NEW FEATURE: Automatic building of simulation dll if it does not exist (no aap recipe or makefile required). Intended mostly for new users and for quick experiments, since manual building is more flexible.
NEW FEATURE: Task groups are groups of tasks written specifically to be instantiated together in a system. This makes it possible for the user to divide tasks into smaller, simpler communicating state machines without the overhead of signal queueing.
NEW FEATURE: C source code generated as two files: a header file and a source file. Previously only a single file was generated; this is more flexible.
NEW FEATURE: Target-specific source code generation contained in a single Target class.
FIXED: Code generation non-critical errors: defining signal masks for output signals and wos_emit for input signals.
FIXED: Bug in Packer: await for output signal
Added WhatOS version and time stamping to generated files.
Removed "emitv" from C Task API. Now "emit" handles both pure and valued signals.
INTERNAL: input and inputval are now passed as function arguments to the task process so that task groups may be implemented.
FIXED: Documentation errors.

1.1.2

Simplified task configuration procedure. This is not backwards compatible. Only tasks which required system-dependent configuration are affected.
Improved documentation: switching between development snapshot and latest release. This allows people to easily monitor development without having to download the new version.

1.1.1

FIXED: file/directory names with spaces caused problems. But it is still recommended to avoid using directories and file names with spaces and other special characters.

1.1.0 (2004 May 07)

Integrated AutoState state machine generator.
Added 2 graphical demos, which can also be used as skeleton applications.
Easier installation by packaging third-party components.
Easier usage by providing wosaap and wospython, eliminating the need to set environment variables.
Restructured the organization of all files.

1.0.3

Now works with Python2.3; FIXED: problems with new boolean types in Python2.3
Allow any version of AAP; AAP is now stable; latest version should work
Works with boost_1_31 and Python2.3

1.0.2

Documentation additions and improvements.
FIXED: README.txt -> readme.txt in $ROOT/main.aap.
FIXED: Crash regarding not being able to instantiate FunctionType in Python 2.2.2 (feature not yet supported) in sigenv and pyprivate.


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