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- /**
- * Copyright (c) 2015 - 2020, Nordic Semiconductor ASA
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form, except as embedded into a Nordic
- * Semiconductor ASA integrated circuit in a product or a software update for
- * such product, must reproduce the above copyright notice, this list of
- * conditions and the following disclaimer in the documentation and/or other
- * 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.
- *
- * 4. This software, with or without modification, must only be used with a
- * Nordic Semiconductor ASA integrated circuit.
- *
- * 5. Any software provided in binary form under this license must not be reverse
- * engineered, decompiled, modified and/or disassembled.
- *
- * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
- #include "sdk_common.h"
- #if NRF_MODULE_ENABLED(NFC_AC_REC)
- #include "nfc_ac_rec.h"
- #include <string.h>
- #include "nrf_error.h"
- #include "nrf.h"
- #define AC_REC_CPS_BYTE_SIZE 1 ///< Size of the field with CPS data.
- #define AC_REC_DATA_REF_LEN_SIZE 1 ///< Size of the Data Reference Length field.
- #define AC_REC_AUX_DATA_REF_COUNT_SIZE 1 ///< Size of the Data Reference Length field.
- const uint8_t nfc_ac_rec_type_field[2] = {'a', 'c'}; ///< Alternative Carrier Record type.
- /**
- * @brief Function for calculating the payload length of the NFC NDEF Alternative Carrier record.
- */
- static uint32_t nfc_ac_rec_payload_size_get(nfc_ac_rec_payload_desc_t const * p_ac_rec_payload_desc)
- {
- int32_t i = 0;
- // Initialize with size of byte with CPS.
- uint32_t payload_size = AC_REC_CPS_BYTE_SIZE;
- // Add Carrier Data Reference size.
- payload_size += p_ac_rec_payload_desc->carrier_data_ref.length + AC_REC_DATA_REF_LEN_SIZE;
- // Add Auxiliary Data Reference Count size.
- payload_size += AC_REC_AUX_DATA_REF_COUNT_SIZE;
- for (i = 0; i < p_ac_rec_payload_desc->aux_data_ref_count; i++)
- {
- // Add Auxiliary Data Reference size.
- payload_size += p_ac_rec_payload_desc->p_aux_data_ref[i].length + AC_REC_DATA_REF_LEN_SIZE;
- }
- return payload_size;
- }
- ret_code_t nfc_ac_rec_payload_constructor(nfc_ac_rec_payload_desc_t * p_nfc_rec_ac_payload_desc,
- uint8_t * p_buff,
- uint32_t * p_len)
- {
- int32_t i = 0;
- uint32_t payload_size = nfc_ac_rec_payload_size_get(p_nfc_rec_ac_payload_desc);
- if (p_buff != NULL)
- {
- // Not enough space in the buffer, return an error.
- if (payload_size > *p_len)
- {
- return NRF_ERROR_NO_MEM;
- }
- // Invalid CPS value.
- if ( p_nfc_rec_ac_payload_desc->cps & ~NFC_AC_CPS_MASK )
- {
- return NRF_ERROR_INVALID_PARAM;
- }
- // Copy CPS.
- *p_buff = p_nfc_rec_ac_payload_desc->cps;
- p_buff += AC_REC_CPS_BYTE_SIZE;
- // Copy Carrier Data Reference.
- *p_buff = p_nfc_rec_ac_payload_desc->carrier_data_ref.length;
- p_buff += AC_REC_DATA_REF_LEN_SIZE;
- memcpy( p_buff,
- p_nfc_rec_ac_payload_desc->carrier_data_ref.p_data,
- p_nfc_rec_ac_payload_desc->carrier_data_ref.length );
- p_buff += p_nfc_rec_ac_payload_desc->carrier_data_ref.length;
- // Copy Auxiliary Data Reference.
- *p_buff = p_nfc_rec_ac_payload_desc->aux_data_ref_count;
- p_buff += AC_REC_AUX_DATA_REF_COUNT_SIZE;
- for (i = 0; i < p_nfc_rec_ac_payload_desc->aux_data_ref_count; i++)
- {
- *p_buff = p_nfc_rec_ac_payload_desc->p_aux_data_ref[i].length;
- p_buff += AC_REC_DATA_REF_LEN_SIZE;
- memcpy( p_buff,
- p_nfc_rec_ac_payload_desc->p_aux_data_ref[i].p_data,
- p_nfc_rec_ac_payload_desc->p_aux_data_ref[i].length );
- p_buff += p_nfc_rec_ac_payload_desc->p_aux_data_ref[i].length;
- }
- }
- // Assign payload size to the return buffer.
- *p_len = payload_size;
- return NRF_SUCCESS;
- }
- void nfc_ac_rec_auxiliary_data_ref_clear(nfc_ndef_record_desc_t * p_ac_rec)
- {
- nfc_ac_rec_payload_desc_t * p_ac_rec_payload =
- (nfc_ac_rec_payload_desc_t*)p_ac_rec->p_payload_descriptor;
- p_ac_rec_payload->aux_data_ref_count = 0;
- }
- ret_code_t nfc_ac_rec_auxiliary_data_ref_add(nfc_ndef_record_desc_t * p_ac_rec,
- uint8_t * p_aux_data,
- uint8_t aux_length)
- {
- nfc_ac_rec_payload_desc_t * p_ac_rec_payload =
- (nfc_ac_rec_payload_desc_t *)p_ac_rec->p_payload_descriptor;
- if (p_ac_rec_payload->aux_data_ref_count >= p_ac_rec_payload->max_aux_data_ref)
- {
- return NRF_ERROR_NO_MEM;
- }
- p_ac_rec_payload->p_aux_data_ref[p_ac_rec_payload->aux_data_ref_count].p_data = p_aux_data;
- p_ac_rec_payload->p_aux_data_ref[p_ac_rec_payload->aux_data_ref_count].length = aux_length;
- p_ac_rec_payload->aux_data_ref_count++;
- return NRF_SUCCESS;
- }
- #endif // NRF_MODULE_ENABLED(NFC_AC_REC)
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