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git-subtree-dir: examples/knx-cc1310/coresdk_cc13xx_cc26xx git-subtree-split: 0d78d3280357416a5c0388148cda13717c9ffaa5
94 lines
3.5 KiB
C
94 lines
3.5 KiB
C
/*
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* Copyright (c) 2017-2019, 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
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of Texas Instruments Incorporated nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without 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,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <ti/drivers/dpl/SemaphoreP.h>
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#include <ti/drivers/dpl/HwiP.h>
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#include <ti/drivers/cryptoutils/sharedresources/CryptoResourceCC26XX.h>
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#include <ti/devices/DeviceFamily.h>
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#include DeviceFamily_constructPath(inc/hw_ints.h)
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/* Crypto driver semaphore used to synchronize accesses to the keyStore, AES, and SHA2 engine */
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SemaphoreP_Struct CryptoResourceCC26XX_accessSemaphore;
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SemaphoreP_Struct CryptoResourceCC26XX_operationSemaphore;
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volatile bool CryptoResourceCC26XX_pollingFlag = 0;
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HwiP_Struct CryptoResourceCC26XX_hwi;
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static bool isInitialized = false;
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static void errorSpin(uintptr_t arg) {
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while(1);
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}
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void CryptoResourceCC26XX_constructRTOSObjects(void) {
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HwiP_Params hwiParams;
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uint_fast8_t key;
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key = HwiP_disable();
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if (!isInitialized){
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/* Construct the common Hwi with a dummy ISR function. This should not matter as the function is set
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* whenever we start an operation after pending on CryptoResourceCC26XX_accessSemaphore
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*/
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HwiP_Params_init(&hwiParams);
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hwiParams.priority = ~0;
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hwiParams.enableInt = false;
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HwiP_construct(&(CryptoResourceCC26XX_hwi), INT_CRYPTO_RESULT_AVAIL_IRQ, errorSpin, &hwiParams);
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SemaphoreP_constructBinary(&CryptoResourceCC26XX_accessSemaphore, 1);
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SemaphoreP_constructBinary(&CryptoResourceCC26XX_operationSemaphore, 0);
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isInitialized = true;
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}
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HwiP_restore(key);
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}
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bool CryptoResourceCC26XX_acquireLock(uint32_t timeout) {
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SemaphoreP_Status resourceAcquired;
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/* Try and obtain access to the crypto module */
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resourceAcquired = SemaphoreP_pend(&CryptoResourceCC26XX_accessSemaphore,
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timeout);
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return resourceAcquired == SemaphoreP_OK;
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}
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void CryptoResourceCC26XX_releaseLock() {
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SemaphoreP_post(&CryptoResourceCC26XX_accessSemaphore);
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}
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