read_uid.c

00001 /**
00002  * @file    read_uid.c
00003  * @brief
00004  *
00005  * DAPLink Interface Firmware
00006  * Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
00007  * SPDX-License-Identifier: Apache-2.0
00008  *
00009  * Licensed under the Apache License, Version 2.0 (the "License"); you may
00010  * not use this file except in compliance with the License.
00011  * You may obtain a copy of the License at
00012  *
00013  * http://www.apache.org/licenses/LICENSE-2.0
00014  *
00015  * Unless required by applicable law or agreed to in writing, software
00016  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
00017  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00018  * See the License for the specific language governing permissions and
00019  * limitations under the License.
00020  */
00021 
00022 #include "read_uid.h"
00023 #include "NuMicro.h"
00024 
00025 void read_unique_id(uint32_t *id)
00026 {
00027     SYS_UnlockReg();
00028     /* Enable FMC ISP function */
00029     FMC_Open();
00030     /* Read Unique ID */
00031     id[0] = FMC_ReadUID(0);
00032     id[1] = FMC_ReadUID(1);
00033     id[2] = FMC_ReadUID(2);
00034     id[3] = 0;
00035     /* Disable FMC ISP function */
00036     FMC_Close();
00037     SYS_LockReg();
00038 }