/* * 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 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'; }