owner-nrf52sdk/nRF5_SDK_15.2.0/components/nfc/ndef/launchapp/nfc_launchapp_msg.c

/**
 * Copyright (c) 2015 - 2018, Nordic Semiconductor ASA
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 *    software without specific prior written permission.
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#include "sdk_common.h"
#if NRF_MODULE_ENABLED(NFC_NDEF_LAUNCHAPP_MSG)

#include <stdint.h>
#include <string.h>
#include "nfc_launchapp_rec.h"
#include "nfc_launchapp_msg.h"
#include "nrf_error.h"
#include "sdk_macros.h"

ret_code_t nfc_launchapp_msg_encode(uint8_t const * p_android_package_name,
                                    uint8_t         android_package_name_length,
                                    uint8_t const * p_win_app_id,
                                    uint8_t         win_app_id_length,
                                    uint8_t       * p_buf,
                                    uint32_t      * p_len)
{
    ret_code_t err_code;

    /* Create NFC NDEF message description, capacity - 2 records */
    NFC_NDEF_MSG_DEF(nfc_launchapp_msg, 2);

    /* Create NFC NDEF Windows Phone LaunchApp Record description */
    NFC_NDEF_WINDOWS_LAUNCHAPP_RECORD_DESC_DEF(nfc_win_launchapp_rec,
                                               p_win_app_id,
                                               win_app_id_length);

    /* Create NFC NDEF Android Application Record description */
    NFC_NDEF_ANDROID_LAUNCHAPP_RECORD_DESC_DEF(nfc_and_launchapp_rec,
                                               p_android_package_name,
                                               android_package_name_length);

    if (p_win_app_id != NULL)
    {
        /* Add Windows Phone LaunchApp Record as first record to message */
        err_code = nfc_ndef_msg_record_add(&NFC_NDEF_MSG(nfc_launchapp_msg),
                                           &NFC_NDEF_WINDOWS_LAUNCHAPP_RECORD_DESC(nfc_win_launchapp_rec));
        VERIFY_SUCCESS(err_code);
    }
    if (p_android_package_name != NULL)
    {
        /* Add Android Application Record as second record to message */
        err_code = nfc_ndef_msg_record_add(&NFC_NDEF_MSG(nfc_launchapp_msg),
                                           &NFC_NDEF_ANDROID_LAUNCHAPP_RECORD_DESC(nfc_and_launchapp_rec));
        VERIFY_SUCCESS(err_code);
    }
    VERIFY_FALSE(NFC_NDEF_MSG(nfc_launchapp_msg).record_count == 0,
                              NRF_ERROR_INVALID_PARAM);

    /* Encode whole message into buffer */
    err_code = nfc_ndef_msg_encode(&NFC_NDEF_MSG(nfc_launchapp_msg),
                                   p_buf,
                                   p_len);

    return err_code;
}

#endif // NRF_MODULE_ENABLED(NFC_NDEF_LAUNCHAPP_MSG)