[429] | 1 |
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| 2 | /** \addtogroup hal */
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| 3 | /** @{*/
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| 4 | /* mbed Microcontroller Library
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| 5 | * Copyright (c) 2016 ARM Limited
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| 6 | *
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| 7 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 8 | * you may not use this file except in compliance with the License.
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| 9 | * You may obtain a copy of the License at
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| 10 | *
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| 11 | * http://www.apache.org/licenses/LICENSE-2.0
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| 12 | *
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| 13 | * Unless required by applicable law or agreed to in writing, software
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| 14 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 16 | * See the License for the specific language governing permissions and
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| 17 | * limitations under the License.
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| 18 | */
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| 19 | #ifndef MBED_TRNG_API_H
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| 20 | #define MBED_TRNG_API_H
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| 21 |
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| 22 | #include <stddef.h>
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| 23 | #include "device.h"
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| 24 |
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| 25 | #if DEVICE_TRNG
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| 26 |
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| 27 | /** TRNG HAL structure. trng_s is declared in the target's HAL
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| 28 | */
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| 29 | typedef struct trng_s trng_t;
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| 30 |
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| 31 | #ifdef __cplusplus
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| 32 | extern "C" {
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| 33 | #endif
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| 34 |
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| 35 | /**
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| 36 | * \defgroup hal_trng TRNG hal functions
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| 37 | * @{
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| 38 | */
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| 39 |
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| 40 | /** Initialize the TRNG peripheral
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| 41 | *
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| 42 | * @param obj The TRNG object
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| 43 | */
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| 44 | void trng_init(trng_t *obj);
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| 45 |
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| 46 | /** Deinitialize the TRNG peripheral
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| 47 | *
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| 48 | * @param obj The TRNG object
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| 49 | */
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| 50 | void trng_free(trng_t *obj);
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| 51 |
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| 52 | /** Get random data from TRNG peripheral
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| 53 | *
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| 54 | * @param obj The TRNG object
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| 55 | * @param output The pointer to an output array
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| 56 | * @param length The size of output data, to avoid buffer overwrite
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| 57 | * @param output_length The length of generated data
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| 58 | * @return 0 success, -1 fail
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| 59 | */
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| 60 | int trng_get_bytes(trng_t *obj, uint8_t *output, size_t length, size_t *output_length);
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| 61 |
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| 62 | /**@}*/
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| 63 |
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| 64 | #ifdef __cplusplus
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| 65 | }
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| 66 | #endif
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| 67 |
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| 68 | #endif
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| 69 |
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| 70 | #endif
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| 71 |
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| 72 | /** @}*/
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