trezor-firmware/core/embed/ble_bootloader/dfu/nrf_dfu_transport.c

/**
 * Copyright (c) 2016 - 2021, Nordic Semiconductor ASA
 *
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
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 *    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
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 *    materials provided with the distribution.
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 * 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_dfu_transport.h"
#include "nrf_log.h"


#define DFU_TRANS_SECTION_ITEM_GET(i)       NRF_SECTION_ITEM_GET(dfu_trans, nrf_dfu_transport_t, (i))
#define DFU_TRANS_SECTION_ITEM_COUNT        NRF_SECTION_ITEM_COUNT(dfu_trans, nrf_dfu_transport_t)

NRF_SECTION_DEF(dfu_trans, const nrf_dfu_transport_t);


uint32_t nrf_dfu_transports_init(nrf_dfu_observer_t observer)
{
    uint32_t const num_transports = DFU_TRANS_SECTION_ITEM_COUNT;
    uint32_t ret_val = NRF_SUCCESS;

    NRF_LOG_DEBUG("Initializing transports (found: %d)", num_transports);

    for (uint32_t i = 0; i < num_transports; i++)
    {
        nrf_dfu_transport_t * const trans = DFU_TRANS_SECTION_ITEM_GET(i);
        ret_val = trans->init_func(observer);
        if (ret_val != NRF_SUCCESS)
        {
            NRF_LOG_DEBUG("Failed to initialize transport %d, error %d", i, ret_val);
            break;
        }
    }

    return ret_val;
}


uint32_t nrf_dfu_transports_close(nrf_dfu_transport_t const * p_exception)
{
    uint32_t const num_transports = DFU_TRANS_SECTION_ITEM_COUNT;
    uint32_t ret_val = NRF_SUCCESS;

    NRF_LOG_DEBUG("Shutting down transports (found: %d)", num_transports);

    for (uint32_t i = 0; i < num_transports; i++)
    {
        nrf_dfu_transport_t * const trans = DFU_TRANS_SECTION_ITEM_GET(i);
        ret_val = trans->close_func(p_exception);
        if (ret_val != NRF_SUCCESS)
        {
            NRF_LOG_DEBUG("Failed to shutdown transport %d, error %d", i, ret_val);
            break;
        }
    }

    return ret_val;
}