60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2012 Karl Palsson <karlp@ŧweak.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/stm32/desig.h>
|
|
|
|
u16 desig_get_flash_size(void)
|
|
{
|
|
return DESIG_FLASH_SIZE;
|
|
}
|
|
|
|
void desig_get_unique_id(u32 result[])
|
|
{
|
|
// Could also just return a pointer to the start? read it as they wish?
|
|
u16 bits15_0 = DESIG_UID_15_0;
|
|
u32 bits31_16 = DESIG_UID_31_16;
|
|
u32 bits63_32 = DESIG_UID_63_32;
|
|
u32 bits95_64 = DESIG_UID_95_64;
|
|
result[0] = bits95_64;
|
|
result[1] = bits63_32;
|
|
result[2] = bits31_16 << 16 | bits15_0;
|
|
}
|
|
|
|
void desig_get_unique_id_as_string(char *string,
|
|
unsigned int string_len)
|
|
{
|
|
int i, len;
|
|
u8 device_id[12];
|
|
static const char chars[] = "0123456789ABCDEF";
|
|
|
|
desig_get_unique_id((u32 *)device_id);
|
|
|
|
/* Each byte produces two characters */
|
|
len = (2 * sizeof(device_id) < string_len) ?
|
|
2 * sizeof(device_id) : string_len - 1;
|
|
|
|
for (i = 0; i < len; i += 2) {
|
|
string[i] = chars[(device_id[i / 2] >> 0) & 0x0F];
|
|
string[i + 1] = chars[(device_id[i / 2] >> 4) & 0x0F];
|
|
}
|
|
|
|
string[len] = '\0';
|
|
}
|
|
|