1 /****************************************************************************** 2 * Filename: smph_doc.h 3 * 4 * Copyright (c) 2015 - 2022, Texas Instruments Incorporated 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * 10 * 1) Redistributions of source code must retain the above copyright notice, 11 * this list of conditions and the following disclaimer. 12 * 13 * 2) Redistributions in binary form must reproduce the above copyright notice, 14 * this list of conditions and the following disclaimer in the documentation 15 * and/or other materials provided with the distribution. 16 * 17 * 3) Neither the name of the ORGANIZATION nor the names of its contributors may 18 * be used to endorse or promote products derived from this software without 19 * specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 ******************************************************************************/ 34 //! \addtogroup mcusemaphore_api 35 //! @{ 36 //! \section sec_mcusemaphore Introduction 37 //! 38 //! The MCU Semaphore offers 32 semaphores that each can be claimed and released in an atomic operation. 39 //! One and only one semaphore can be handled during a transaction. 40 //! 41 //! Claiming a semaphore causes subsequent claims/reads to return '0' (i.e. "not available"). 42 //! How the semaphores are used and respected is decided by software. 43 //! 44 //! \section sec_mcusemaphore_api API 45 //! 46 //! The API functions can be grouped like this: 47 //! 48 //! Semaphore acquire: 49 //! - \ref SMPHAcquire() 50 //! - \ref SMPHTryAcquire() 51 //! 52 //! Semaphore release: 53 //! - \ref SMPHRelease() 54 //! 55 //! @} 56