51 lines
2.0 KiB
C
51 lines
2.0 KiB
C
/****************************************************************************
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* arch/arm/src/nrf52/nrf52_uid.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include "arm_arch.h"
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#include "nrf52_uid.h"
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#include "hardware/nrf52_ficr.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void nrf52_get_uniqueid(uint8_t uniqueid[])
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{
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uint32_t uid0 = getreg32(NRF52_FICR_BASE + NRF52_FICR_DEVICEID0_OFFSET);
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uint32_t uid1 = getreg32(NRF52_FICR_BASE + NRF52_FICR_DEVICEID1_OFFSET);
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uniqueid[0] = (uint8_t)((uid0 >> 0) & 0xff);
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uniqueid[1] = (uint8_t)((uid0 >> 8) & 0xff);
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uniqueid[2] = (uint8_t)((uid0 >> 16) & 0xff);
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uniqueid[3] = (uint8_t)((uid0 >> 24) & 0xff);
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uniqueid[4] = (uint8_t)((uid1 >> 0) & 0xff);
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uniqueid[5] = (uint8_t)((uid1 >> 8) & 0xff);
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uniqueid[6] = (uint8_t)((uid1 >> 16) & 0xff);
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uniqueid[7] = (uint8_t)((uid1 >> 24) & 0xff);
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}
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