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mbed-os / targets / TARGET_Cypress / TARGET_PSOC6 / mtb-hal-cat1 / source / cyhal_trng.c
@Dustin Crossman Dustin Crossman on 4 Jun 2021 1 KB Fix file modes.
/*******************************************************************************
* File Name: cyhal_trng.c
*
* Description:
* Provides a high level interface for interacting with the Cypress True Random
* Number Generator. This is a wrapper around the lower level PDL API.
*
********************************************************************************
* \copyright
* Copyright 2018-2021 Cypress Semiconductor Corporation
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/

#include "cyhal_hwmgr.h"
#include "cyhal_crypto_common.h"
#include "cyhal_trng_impl.h"
#include "cy_utils.h"

#if defined(CY_IP_MXCRYPTO)

#if defined(__cplusplus)
extern "C"
{
#endif

/*******************************************************************************
*       Functions
*******************************************************************************/
cy_rslt_t cyhal_trng_init(cyhal_trng_t *obj)
{
    CY_ASSERT(NULL != obj);
    return cyhal_crypto_reserve(&(obj->base), &(obj->resource), CYHAL_CRYPTO_TRNG);
}

void cyhal_trng_free(cyhal_trng_t *obj)
{
    CY_ASSERT(NULL != obj || obj->resource.type != CYHAL_RSC_CRYPTO);
    if (obj->resource.type != CYHAL_RSC_INVALID)
    {
        cyhal_crypto_free(obj->base, &(obj->resource), CYHAL_CRYPTO_TRNG);
    }
}

#if defined(__cplusplus)
}
#endif

#endif /* defined(CY_IP_MXCRYPTO) */