/* * This file is part of the Black Magic Debug project. * * Copyright (C) 2015 Black Sphere Technologies Ltd. * Written by Gareth McMullin * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include "general.h" char *serialno_read(char *s) { #if defined(STM32F4) volatile uint32_t *unique_id_p = (volatile uint32_t *)0x1FFF7A10; #else volatile uint32_t *unique_id_p = (volatile uint32_t *)0x1FFFF7E8; #endif uint32_t unique_id = *unique_id_p + *(unique_id_p + 1) + *(unique_id_p + 2); int i; /* Fetch serial number from chip's unique ID */ for(i = 0; i < 8; i++) { s[7-i] = ((unique_id >> (4*i)) & 0xF) + '0'; } for(i = 0; i < 8; i++) if(s[i] > '9') s[i] += 'A' - '9' - 1; s[8] = 0; return s; }