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102 lines
4.2 KiB
C
102 lines
4.2 KiB
C
/******************************************************************************
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* Filename: smph.c
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* Revised: 2017-04-26 18:27:45 +0200 (Wed, 26 Apr 2017)
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* Revision: 48852
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*
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* Description: Driver for the MCU Semaphore.
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*
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* Copyright (c) 2015 - 2017, Texas Instruments Incorporated
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of the ORGANIZATION nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************/
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#include "smph.h"
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//*****************************************************************************
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//
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// Handle support for DriverLib in ROM:
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// This section will undo prototype renaming made in the header file
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//
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//*****************************************************************************
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#if !defined(DOXYGEN)
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#undef SMPHAcquire
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#define SMPHAcquire NOROM_SMPHAcquire
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#endif
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//*****************************************************************************
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//
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// Acquire a semaphore
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//
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//*****************************************************************************
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void
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SMPHAcquire(uint32_t ui32Semaphore)
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{
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// Check the arguments.
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ASSERT((ui32Semaphore == SMPH_0) ||
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(ui32Semaphore == SMPH_1) ||
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(ui32Semaphore == SMPH_2) ||
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(ui32Semaphore == SMPH_3) ||
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(ui32Semaphore == SMPH_4) ||
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(ui32Semaphore == SMPH_5) ||
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(ui32Semaphore == SMPH_6) ||
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(ui32Semaphore == SMPH_7) ||
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(ui32Semaphore == SMPH_8) ||
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(ui32Semaphore == SMPH_9) ||
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(ui32Semaphore == SMPH_10) ||
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(ui32Semaphore == SMPH_11) ||
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(ui32Semaphore == SMPH_12) ||
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(ui32Semaphore == SMPH_13) ||
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(ui32Semaphore == SMPH_14) ||
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(ui32Semaphore == SMPH_15) ||
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(ui32Semaphore == SMPH_16) ||
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(ui32Semaphore == SMPH_17) ||
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(ui32Semaphore == SMPH_18) ||
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(ui32Semaphore == SMPH_19) ||
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(ui32Semaphore == SMPH_20) ||
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(ui32Semaphore == SMPH_21) ||
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(ui32Semaphore == SMPH_22) ||
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(ui32Semaphore == SMPH_23) ||
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(ui32Semaphore == SMPH_24) ||
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(ui32Semaphore == SMPH_25) ||
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(ui32Semaphore == SMPH_26) ||
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(ui32Semaphore == SMPH_27) ||
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(ui32Semaphore == SMPH_28) ||
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(ui32Semaphore == SMPH_29) ||
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(ui32Semaphore == SMPH_30) ||
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(ui32Semaphore == SMPH_31));
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// Wait for semaphore to be release such that it can be claimed
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// Semaphore register reads 1 when lock was acquired otherwise 0
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// (i.e. SMPH_CLAIMED).
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while(HWREG(SMPH_BASE + SMPH_O_SMPH0 + 4 * ui32Semaphore) ==
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SMPH_CLAIMED)
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{
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}
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}
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