/**
 * Copyright (c) 2009 - 2018, Nordic Semiconductor ASA
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 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
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 *    materials provided with the distribution.
 * 
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
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 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
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 */
#include "nrf_gzp.h"
#include "nrf_nvmc.h"

/**
 * @file
 * @brief Implementation of Gazell Pairing Library (gzp), nRF5x specific Host functions.
 * @defgroup gzp_source_host_nrf5x Gazell Pairing Host nRF5x specific implementation
 * @{
 * @ingroup gzp_04_source
 */


void gzp_host_chip_id_read(uint8_t *dst, uint8_t n)
{
  uint8_t i;
  uint8_t random_number;

  if ( *((uint8_t*)(GZP_PARAMS_STORAGE_ADR + GZP_HOST_ID_LENGTH + 1)) == 0xff)
  {
    nrf_nvmc_write_byte((GZP_PARAMS_STORAGE_ADR + GZP_HOST_ID_LENGTH + 1) , 0x00);

    for (i = 0; i < n; i++)
    {
      gzp_random_numbers_generate(&random_number, 1);
      nrf_nvmc_write_byte((GZP_PARAMS_STORAGE_ADR + GZP_HOST_ID_LENGTH + 2 + i) , random_number);
    }
  }

  for (i = 0; i < n; i++)
  {
    *(dst++) = *((uint8_t*)(GZP_PARAMS_STORAGE_ADR + GZP_HOST_ID_LENGTH + 2 + i));
  }
}

/** @} */