Use a Different Target

If you want to use a different target, you must deal with three levels of dependancies:

modify or verify the files WSTTarget.h, WSTTarget.c, WSTRTOS.h and WSTRTOS.c
you may need to specify a different SFR include file in your model.
you may also need to select the target in your IDE.

Please refer to RXFDeployerGuide.pdf to learn how you can use your own instances of these files.
The compiler options are specific for the RXF being used, and their values are translated into #define's in the file RxfDimensions.h which is normally generated in Rhapsody. In the CreateRXFLibrary you may need to modify the static RxfDimensions.h

When you modify existing files, you must enclose sections between #ifdef WST_TARGET_xx and #endif constructions, using existing constants or defining a new one. After you have implemented the following interface,

Files

Description

WSTTarget.h

This file must define the following functions:

WSTTarget_Init	This function is called in main(), prior to calling the Rhapsody generated WST_RXF_Main(). So this is the place to hook code into when your target is not already initialized by your startup code, prior to calling WST_RXF_Main(). Its prototype is: void WSTTarget_Init( void );
WSTTarget_Cleanup	This function is not called by the RXF. You must implement it and call it in your <Rhapsody component>__Cleanup() if you need it. Its prototype is: void WSTTarget_Cleanup( void );

WSTTarget.c

This file must implement the following functions:

WSTTarget_Init	See its description for WSTTarget.h.
WSTTarget_Cleanup	Optional, see its description for WSTTarget.h.

WSTRTOS.h

This file must define the following functions:

WSTRTOS_Init	This function is called as last call in main(), which initializes the RTOS and starts the main task which calls the Rhapsody generated WST_RXF_Main(). So this is the place to hook code into when your RTOS is not already initialized by your startup code. Its prototype is: void WSTRTOS_Init( void );
WSTRTOS_Cleanup	This function is not called by the RXF. You must implement it and call it in your <Rhapsody component>__Cleanup() if you need it. Its prototype is: void WSTRTOS_Cleanup( void );

The file WSTRTOS.h must define the following macros:

RIC_MS_PER_TICK	The number of ticks per milisecond. Usually this constant can be derived from your RTOS configuration.
RiCOSDefaultThreadPriority	This constant, type long, is part of the RiCOSOXFInitEpilog and RiCOSEndApplocation interface by IBM Rational, but needed in an RTX based on an RTOS only. You can define it as RTOS_PRIORITY_NORMAL
RiCOSDefaultStackSize	This constant, type long, is part of the RiCOSOXFInitEpilog and RiCOSEndApplocation interface by IBM Rational, but needed in an RTX based on an RTOS only. You can define it as RTOS_DEFAULT_STACK
RiCOSDefaultMessageQueueSize	This constant, type long, is part of the RiCOSOXFInitEpilog and RiCOSEndApplocation interface by IBM Rational, but needed in an RTX based on an RTOS only. You can define it as RTOS_MQ_DEFAULT_SIZE
RTOS_PRIORITY_NORMAL	The default priority of any task. This priority is used when the real time model is used.
RTOS_PRIORITY_HIGH	The priority of the Bridge task
RTOS_PRIORITY_LOW	The lowest priority of any task. This priority is used when the simulated time model is used.
RTOS_DEFAULT_STACK	This macro defines the default size of any task in bytes.
RTOS_MQ_DEFAULT_SIZE	This macro defines the maximum number of messages in a queue
RTOS_MAIN_STK_SIZE	This macro defines the alignment in bytes of the main task rhpMainTask
RTOS_SMALL_STACK	This macro defines the alignment in bytes of the main task BridgeTask
RiC_RAW_MEMORY_ALIGNMENT
RiCOSMemoryAllocation_malloc	malloc must be mapped to this function
RiCOSMemoryAllocation_calloc	calloc must be mapped to this function
RiCOSMemoryAllocation_realloc	realloc must be mapped to this function
RiCOSMemoryAllocation_free	free must be mapped to this function

The constant RIC_OS_MUTEX_LOCK_AS_OPERATION may be used when the RTOS is capable of locking a mutex in a single operation.

WSTRTOS.c

This file must implement the following functions:

WSTRTOS_Init	See its description for WSTRTOS.h.
WSTRTOS_Cleanup	Optional, see its description for WSTRTOS.h.