lora-car/libopencm3/lib/stm32/l1/desig.c

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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2020 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/cm3/assert.h>
#include <libopencm3/stm32/dbgmcu.h>
#include <libopencm3/stm32/desig.h>
uint16_t desig_get_flash_size(void)
{
uint32_t v;
uint32_t device_id = DBGMCU_IDCODE & DBGMCU_IDCODE_DEV_ID_MASK;
switch (device_id) {
case 0x416:
return *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT12;
case 0x429:
v = *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT12;
return v & 0xff;
case 0x427:
case 0x437:
return *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT3456;
case 0x436:
v = *(uint32_t*)DESIG_FLASH_SIZE_BASE_CAT3456;
return v ? 256 : 384;
}
cm3_assert_not_reached();
}
void desig_get_unique_id(uint32_t *result)
{
uint32_t device_id = DBGMCU_IDCODE & DBGMCU_IDCODE_DEV_ID_MASK;
uint32_t* uid_base = 0;
switch (device_id) {
case 0x416:
case 0x429:
uid_base = (uint32_t*)DESIG_UNIQUE_ID_BASE_CAT12;
break;
case 0x427:
case 0x436:
case 0x437:
uid_base = (uint32_t*)DESIG_UNIQUE_ID_BASE_CAT3456;
break;
}
if (!uid_base) {
/* We don't know the address for this device. Hang here to help debugging. */
cm3_assert_not_reached();
}
/* yes, careful with offsets here */
result[0] = uid_base[5];
result[1] = uid_base[1];
result[2] = uid_base[0];
}