text: /* CMSIS-DAP Interface Firmware
   * Copyright (c) 2009-2013 ARM Limited
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  #include "read_uid.h"
  #include <sam3u.h>
  
  static uint32_t unique_id[4];
  void read_unique_id(uint32_t * id) {
    id[0] = unique_id[0];
    id[1] = unique_id[1];
    id[2] = unique_id[2];
    id[3] = unique_id[3];
  }
  
  void create_unique_id(void){
  
      EFC0->EEFC_FMR |= (1UL << 16);
  	EFC0->EEFC_FCR = 0x5A00000E;
  	/*Monitor FRDY*/
  	while ((EFC0->EEFC_FSR & EEFC_FSR_FRDY) == EEFC_FSR_FRDY);
  
  	unique_id[0] = *(uint32_t *)0x80000;
  	unique_id[1] = *(uint32_t *)0x80004;
  	unique_id[2] = *(uint32_t *)0x80008;
  	unique_id[3] = *(uint32_t *)0x8000C;
    
  	EFC0->EEFC_FCR = 0x5A00000F;
  	/*Monitor FRDY*/
  	while ((EFC0->EEFC_FSR & EEFC_FSR_FRDY) != EEFC_FSR_FRDY);
      EFC0->EEFC_FMR &= ~(1UL << 16);
  }
  