71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2020 Karl Palsson <karlp@tweak.net.au>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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 library 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/cm3/assert.h>
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#include <libopencm3/stm32/dbgmcu.h>
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#include <libopencm3/stm32/desig.h>
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uint16_t desig_get_flash_size(void)
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{
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uint32_t v;
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uint32_t device_id = DBGMCU_IDCODE & DBGMCU_IDCODE_DEV_ID_MASK;
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switch (device_id) {
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case 0x416:
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return *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT12;
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case 0x429:
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v = *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT12;
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return v & 0xff;
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case 0x427:
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case 0x437:
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return *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT3456;
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case 0x436:
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v = *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT3456;
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return v ? 256 : 384;
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}
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cm3_assert_not_reached();
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}
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void desig_get_unique_id(uint32_t *result)
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{
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uint32_t device_id = DBGMCU_IDCODE & DBGMCU_IDCODE_DEV_ID_MASK;
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uint32_t* uid_base = 0;
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switch (device_id) {
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case 0x416:
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case 0x429:
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uid_base = (uint32_t*)DESIG_UNIQUE_ID_BASE_CAT12;
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break;
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case 0x427:
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case 0x436:
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case 0x437:
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uid_base = (uint32_t*)DESIG_UNIQUE_ID_BASE_CAT3456;
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break;
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}
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if (!uid_base) {
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/* We don't know the address for this device. Hang here to help debugging. */
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cm3_assert_not_reached();
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}
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/* yes, careful with offsets here */
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result[0] = uid_base[5];
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result[1] = uid_base[1];
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result[2] = uid_base[0];
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}
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