takashi kadono / Mbed OS Nucleo446_SSD1331

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K82F/trng_api.c@3:f3764f852aa8, 2018-10-11 (annotated)

Committer:
kadonotakashi
Date:
Thu Oct 11 02:27:46 2018 +0000
Revision:
3:f3764f852aa8
Parent:
0:8fdf9a60065b 
Nucreo 446 + SSD1331 test version;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kadonotakashi 0:8fdf9a60065b 1 /*
kadonotakashi 0:8fdf9a60065b 2 * Hardware entropy collector for the K66F, using Freescale's RNGA
kadonotakashi 0:8fdf9a60065b 3 *
kadonotakashi 0:8fdf9a60065b 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
kadonotakashi 0:8fdf9a60065b 5 * SPDX-License-Identifier: Apache-2.0
kadonotakashi 0:8fdf9a60065b 6 *
kadonotakashi 0:8fdf9a60065b 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
kadonotakashi 0:8fdf9a60065b 8 * not use this file except in compliance with the License.
kadonotakashi 0:8fdf9a60065b 9 * You may obtain a copy of the License at
kadonotakashi 0:8fdf9a60065b 10 *
kadonotakashi 0:8fdf9a60065b 11 * http://www.apache.org/licenses/LICENSE-2.0
kadonotakashi 0:8fdf9a60065b 12 *
kadonotakashi 0:8fdf9a60065b 13 * Unless required by applicable law or agreed to in writing, software
kadonotakashi 0:8fdf9a60065b 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
kadonotakashi 0:8fdf9a60065b 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kadonotakashi 0:8fdf9a60065b 16 * See the License for the specific language governing permissions and
kadonotakashi 0:8fdf9a60065b 17 * limitations under the License.
kadonotakashi 0:8fdf9a60065b 18 *
kadonotakashi 0:8fdf9a60065b 19 */
kadonotakashi 0:8fdf9a60065b 20
kadonotakashi 0:8fdf9a60065b 21 /*
kadonotakashi 0:8fdf9a60065b 22 * Reference: "K66 Sub-Family Reference Manual, Rev. 2", chapter 38
kadonotakashi 0:8fdf9a60065b 23 */
kadonotakashi 0:8fdf9a60065b 24
kadonotakashi 0:8fdf9a60065b 25 #include <stdlib.h>
kadonotakashi 0:8fdf9a60065b 26 #include "cmsis.h"
kadonotakashi 0:8fdf9a60065b 27 #include "fsl_trng.h"
kadonotakashi 0:8fdf9a60065b 28 #include "trng_api.h"
kadonotakashi 0:8fdf9a60065b 29
kadonotakashi 0:8fdf9a60065b 30 void trng_init(trng_t *obj)
kadonotakashi 0:8fdf9a60065b 31 {
kadonotakashi 0:8fdf9a60065b 32 (void)obj;
kadonotakashi 0:8fdf9a60065b 33 trng_config_t trngConfig;
kadonotakashi 0:8fdf9a60065b 34 TRNG_GetDefaultConfig(&trngConfig);
kadonotakashi 0:8fdf9a60065b 35 TRNG_Init(TRNG0, &trngConfig);
kadonotakashi 0:8fdf9a60065b 36 }
kadonotakashi 0:8fdf9a60065b 37
kadonotakashi 0:8fdf9a60065b 38 void trng_free(trng_t *obj)
kadonotakashi 0:8fdf9a60065b 39 {
kadonotakashi 0:8fdf9a60065b 40 (void)obj;
kadonotakashi 0:8fdf9a60065b 41 TRNG_Deinit(TRNG0);
kadonotakashi 0:8fdf9a60065b 42 }
kadonotakashi 0:8fdf9a60065b 43
kadonotakashi 0:8fdf9a60065b 44 int trng_get_bytes(trng_t *obj, uint8_t *output, size_t length, size_t *output_length)
kadonotakashi 0:8fdf9a60065b 45 {
kadonotakashi 0:8fdf9a60065b 46 (void)obj;
kadonotakashi 0:8fdf9a60065b 47
kadonotakashi 0:8fdf9a60065b 48 if(TRNG_GetRandomData(TRNG0, output, length) != kStatus_Success) return -1;
kadonotakashi 0:8fdf9a60065b 49 *output_length = length;
kadonotakashi 0:8fdf9a60065b 50
kadonotakashi 0:8fdf9a60065b 51 return 0;
kadonotakashi 0:8fdf9a60065b 52 }