rtos_bindings.h

//*****************************************************************************
//
// rtos_bindings.h - Macros intended to aid porting of TivaWare modules
//                   for use with an RTOS.
//
// Copyright (c) 2012-2013 Texas Instruments Incorporated.  All rights reserved.
// Software License Agreement
// 
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//   modification, are permitted provided that the following conditions
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// 
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//   notice, this list of conditions and the following disclaimer.
// 
//   Redistributions in binary form must reproduce the above copyright
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// 
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// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// 
// This is part of revision 1.1 of the Tiva Peripheral Driver Library.
//
//*****************************************************************************

#ifndef __DRIVERLIB_RTOS_BINDINGS_H__
#define __DRIVERLIB_RTOS_BINDINGS_H__

#ifdef USE_RTOS
//*****************************************************************************
//
// If an RTOS is in use, implement a header file called "tiva_rtos.h"
// which contains RTOS-specific versions of each of the macros defined below
// and make sure it appears on the include path set when you build your
// project.
//
// Note that there is no default implementation of this header file included
// in TivaWare - it is your responsibility to create it specifically for
// your RTOS.
//
//*****************************************************************************
#include "tiva_rtos.h"

#else
//*****************************************************************************
//
// When no RTOS is in use, the follow macros compile to either nothing or a
// minimal implementation that works in a bare-metal environment.
//
// Each of these macros must be redefined in tiva_rtos.h if you are using
// TivaWare under an RTOS.
//
//*****************************************************************************

//*****************************************************************************
//
// A simple macro used to yield within polling loops.  In the default, non-RTOS
// implementation, this compiles to nothing.
//
//*****************************************************************************
#define OS_YIELD()

//*****************************************************************************
//
// A simple macro around the SysCtlDelay function.  The parameter is the number
// of 3 cycle loops to wait before returning (as for SysCtlDelay).  In an RTOS
// implementation, this could be replaced with an OS delay call with
// appropriate parameter scaling.
//
//*****************************************************************************
#define OS_DELAY(ul3Cycles) MAP_SysCtlDelay(ul3Cycles)

//*****************************************************************************
//
// Wrappers around low level interrupt control functions.  For information
// on each of these functions, please see the appropriate API documentation
// for the DriverLib Interrupt driver.
//
// The macros defined here represent interrupt-control functions that may be
// called from within TivaWare code.  It is expected that application
// code will use RTOS-specific functions to control interrupt priority, to
// pend interrupts and to perform runtime vector manipulation.  As a result,
// no macros are defined to wrap any of these functions from interrupt.c.
//
//*****************************************************************************
#define OS_INT_MASTER_ENABLE() MAP_IntMasterEnable()
#define OS_INT_MASTER_DISABLE() MAP_IntMasterDisable()
#define OS_INT_DISABLE(ui32IntID) MAP_IntDisable(ui32IntID)
#define OS_INT_ENABLE(ui32IntID) MAP_IntEnable(ui32IntID)

#endif // USE_RTOS

#endif // __DRIVERLIB_RTOS_BINDINGS_H__