46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/*
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* This file is part of the Black Magic Debug project.
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*
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* Copyright (C) 2015 Black Sphere Technologies Ltd.
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* Written by Gareth McMullin <gareth@blacksphere.co.nz>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "general.h"
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char *serialno_read(char *s)
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{
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#if defined(STM32F4)
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volatile uint32_t *unique_id_p = (volatile uint32_t *)0x1FFF7A10;
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#else
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volatile uint32_t *unique_id_p = (volatile uint32_t *)0x1FFFF7E8;
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#endif
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uint32_t unique_id = *unique_id_p +
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*(unique_id_p + 1) +
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*(unique_id_p + 2);
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int i;
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/* Fetch serial number from chip's unique ID */
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for(i = 0; i < 8; i++) {
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s[7-i] = ((unique_id >> (4*i)) & 0xF) + '0';
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}
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for(i = 0; i < 8; i++)
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if(s[i] > '9')
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s[i] += 'A' - '9' - 1;
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s[8] = 0;
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return s;
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}
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