| /****************************************************************************** |
| * Filename: smph.c |
| * Revised: 2015-01-13 16:59:55 +0100 (Tue, 13 Jan 2015) |
| * Revision: 42365 |
| * |
| * Description: Driver for the MCU Semaphore. |
| * |
| * Copyright (c) 2015 - 2016, Texas Instruments Incorporated |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1) Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * |
| * 2) Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * 3) Neither the name of the ORGANIZATION nor the names of its contributors may |
| * be used to endorse or promote products derived from this software without |
| * specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| * |
| ******************************************************************************/ |
| |
| #include <driverlib/smph.h> |
| |
| //***************************************************************************** |
| // |
| // Handle support for DriverLib in ROM: |
| // This section will undo prototype renaming made in the header file |
| // |
| //***************************************************************************** |
| #if !defined(DOXYGEN) |
| #undef SMPHAcquire |
| #define SMPHAcquire NOROM_SMPHAcquire |
| #endif |
| |
| //***************************************************************************** |
| // |
| //! Acquire a semaphore |
| // |
| //***************************************************************************** |
| void |
| SMPHAcquire(uint32_t ui32Semaphore) |
| { |
| // |
| // Check the arguments. |
| // |
| ASSERT((ui32Semaphore == SMPH_0) || |
| (ui32Semaphore == SMPH_1) || |
| (ui32Semaphore == SMPH_2) || |
| (ui32Semaphore == SMPH_3) || |
| (ui32Semaphore == SMPH_4) || |
| (ui32Semaphore == SMPH_5) || |
| (ui32Semaphore == SMPH_6) || |
| (ui32Semaphore == SMPH_7) || |
| (ui32Semaphore == SMPH_8) || |
| (ui32Semaphore == SMPH_9) || |
| (ui32Semaphore == SMPH_10) || |
| (ui32Semaphore == SMPH_11) || |
| (ui32Semaphore == SMPH_12) || |
| (ui32Semaphore == SMPH_13) || |
| (ui32Semaphore == SMPH_14) || |
| (ui32Semaphore == SMPH_15) || |
| (ui32Semaphore == SMPH_16) || |
| (ui32Semaphore == SMPH_17) || |
| (ui32Semaphore == SMPH_18) || |
| (ui32Semaphore == SMPH_19) || |
| (ui32Semaphore == SMPH_20) || |
| (ui32Semaphore == SMPH_21) || |
| (ui32Semaphore == SMPH_22) || |
| (ui32Semaphore == SMPH_23) || |
| (ui32Semaphore == SMPH_24) || |
| (ui32Semaphore == SMPH_25) || |
| (ui32Semaphore == SMPH_26) || |
| (ui32Semaphore == SMPH_27) || |
| (ui32Semaphore == SMPH_28) || |
| (ui32Semaphore == SMPH_29) || |
| (ui32Semaphore == SMPH_30) || |
| (ui32Semaphore == SMPH_31)); |
| |
| // |
| // Wait for semaphore to be release such that it can be claimed |
| // Semaphore register reads 1 when lock was acquired otherwise 0 |
| // (i.e. SMPH_CLAIMED). |
| // |
| while(HWREG(SMPH_BASE + SMPH_O_SMPH0 + 4 * ui32Semaphore) == |
| SMPH_CLAIMED) |
| { |
| } |
| } |