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RIOT/cpu/sam0_common/periph/cpuid.c 964 Bytes
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  /*
   * Copyright (C) 2014-2016 Freie Universitรคt Berlin
   *
   * This file is subject to the terms and conditions of the GNU Lesser
   * General Public License v2.1. See the file LICENSE in the top level
   * directory for more details.
   */
  
  /**
   * @ingroup     cpu_sam0_common
   * @ingroup     drivers_periph_cpuid
   * @{
   *
   * @file
   * @brief       Low-level CPUID driver implementation
   *
   * @author      Troels Hoffmeyer <troels.d.hoffmeyer@gmail.com>
   * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
   *
   * @}
   */
  
  #include <stdint.h>
  #include <string.h>
  
  #include "periph/cpuid.h"
  
  #define WORD0               (*(volatile uint32_t *)0x0080A00C)
  #define WORD1               (*(volatile uint32_t *)0x0080A040)
  #define WORD2               (*(volatile uint32_t *)0x0080A044)
  #define WORD3               (*(volatile uint32_t *)0x0080A048)
  
  
  void cpuid_get(void *id)
  {
      uint32_t addr[] = { WORD0, WORD1, WORD2, WORD3 };
      memcpy(id, &addr[0], CPUID_LEN);
  }