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 "iap.h"
00024 
00025 void read_unique_id(uint32_t *id)
00026 {
00027     iap_lock();
00028 
00029     // readUID IAP call
00030     iap_op.cmd = 58;
00031     iap_call(&iap_op);
00032     *id = iap_op.res[0] ^ iap_op.res[1] ^ iap_op.res[2] ^ iap_op.res[3];
00033 
00034     iap_unlock();
00035 }