Marco Zecchini
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Example_RTOS
Rtos API example
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arm_hal_random.c
00001 /* 00002 * Copyright (c) 2015 ARM Limited. All rights reserved. 00003 * SPDX-License-Identifier: Apache-2.0 00004 * Licensed under the Apache License, Version 2.0 (the License); you may 00005 * not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an AS IS BASIS, WITHOUT 00012 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #include "ns_types.h" 00017 #include "arm_hal_random.h" 00018 00019 #include "mbedtls/entropy_poll.h" 00020 00021 void arm_random_module_init(void) 00022 { 00023 } 00024 00025 uint32_t arm_random_seed_get(void) 00026 { 00027 uint32_t result = 0; 00028 #ifdef MBEDTLS_ENTROPY_HARDWARE_ALT 00029 /* Grab a seed from a function we provide for mbedtls */ 00030 size_t len; 00031 mbedtls_hardware_poll(NULL, (uint8_t *) &result, sizeof result, &len); 00032 #endif 00033 return result; 00034 }
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