/* * This file is part of the libopencm3 project. * * Copyright (C) 2012 Karl Palsson * * 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 . */ #include uint16_t desig_get_flash_size(void) { return DESIG_FLASH_SIZE; } void desig_get_unique_id(uint32_t result[]) { result[0] = DESIG_UNIQUE_ID2; result[1] = DESIG_UNIQUE_ID1; result[2] = DESIG_UNIQUE_ID0; } void desig_get_unique_id_as_string(char *string, unsigned int string_len) { int i, len; uint8_t device_id[12]; static const char chars[] = "0123456789ABCDEF"; desig_get_unique_id((uint32_t *)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'; }