Function createTransport

src/platforms/esp/32/drivers/ble/ble_esp32.cpp.hpp:340–391

// ---------------------------------------------------------------------------

TransportState* createTransport(const char* deviceName) FL_NOEXCEPT {
    auto uptr = fl::make_unique<TransportState>();
    auto* state = uptr.get();

    // Set static state pointer for on_sync callback (which has no void* arg)
    s_bleState = state;

    // Initialize NimBLE stack (IDF 5+ API)
    int rc = nimble_port_init();
    if (rc != 0) {
        FL_WARN("[BLE] nimble_port_init failed rc=" << rc);
        s_bleState = nullptr;
        return nullptr;
    }

    // Configure NimBLE host
    ble_hs_cfg.sync_cb = fl_ble_on_sync;

    // Initialize GAP and GATT services
    ble_svc_gap_init();
    ble_svc_gatt_init();

    // Patch GATT table with state pointers and register
    fl_ble_patch_gatt_table(state);
    rc = ble_gatts_count_cfg(fl_gatt_svr_svcs_mut);
    if (rc != 0) {
        FL_WARN("[BLE] gatts_count_cfg failed rc=" << rc);
        nimble_port_deinit();
        s_bleState = nullptr;
        return nullptr;
    }
    rc = ble_gatts_add_svcs(fl_gatt_svr_svcs_mut);
    if (rc != 0) {
        FL_WARN("[BLE] gatts_add_svcs failed rc=" << rc);
        nimble_port_deinit();
        s_bleState = nullptr;
        return nullptr;
    }

    // Set device name
    rc = ble_svc_gap_device_name_set(deviceName);
    if (rc != 0) {
        FL_WARN("[BLE] device_name_set failed rc=" << rc);
    }

    // Start NimBLE host task on FreeRTOS
    nimble_port_freertos_init(fl_ble_host_task);

    FL_WARN("[BLE] GATT server started: name=" << deviceName);
    uptr.release(); // caller owns the state now
    return state;
}

void destroyTransport(TransportState* state) FL_NOEXCEPT {
    if (!state) return;