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/** \addtogroup hal */
/** @{*/
/* mbed Microcontroller Library
* Copyright (c) 2016 ARM Limited
*
* 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.
*/
#ifndef MBED_TRNG_API_H
#define MBED_TRNG_API_H
#include <stddef.h>
#include "device.h"
#if DEVICE_TRNG
/** TRNG HAL structure. trng_s is declared in the target's HAL
*/
typedef struct trng_s trng_t;
#ifdef __cplusplus
extern "C" {
#endif
/**
* \defgroup hal_trng TRNG hal functions
* @{
*/
/** Initialize the TRNG peripheral
*
* @param obj The TRNG object
*/
void trng_init(trng_t *obj);
/** Deinitialize the TRNG peripheral
*
* @param obj The TRNG object
*/
void trng_free(trng_t *obj);
/** Get random data from TRNG peripheral
*
* @param obj The TRNG object
* @param output The pointer to an output array
* @param length The size of output data, to avoid buffer overwrite
* @param output_length The length of generated data
* @return 0 success, -1 fail
*/
int trng_get_bytes(trng_t *obj, uint8_t *output, size_t length, size_t *output_length);
/**@}*/
#ifdef __cplusplus
}
#endif
#endif
#endif
/** @}*/
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