How to use esp_mesh_lite_set_fusion_config to set the fusion signal strength (AEGHB-625)

[yel-best]

use last version mesh-lite use esp-idf 5.1.3

I set the fusion parameters directly when calling the app_wifi_set_softap_info function when initializing mesh-lite, but it didn't seem to achieve the desired effect.

I have some confusion about the parameters of this fusion signal strength, as follows:

• I understand that with the same mesh ID, if the nearest mesh network signal is detected to be lower than the threshold, the connection will not be selected. Will it allow itself to become a root node?
• I am currently testing that the connection will continue even if it is lower than the threshold. For example, if I configure the value to be -75, I will also see that I will connect to a network with an RSSI strength of -85.

The control I understand is that under the same mesh, if certain conditions are not met, it will automatically become a root node. This allows me to ensure that devices on multiple floors are present when using a mesh with the same SSID. Network; it is possible to elect to become the root node or automatically become the root node by detecting network signals that do not meet the threshold;

// Initialize fusion configuration with specified values.
esp_mesh_lite_fusion_config_t fusion_config = {
    .fusion_start_time_sec = 0, // Set the fusion to start 60 seconds after the mesh network is up.
    .fusion_frequency_sec = 120, // Set the network to perform fusion every 120 seconds thereafter.
    .fusion_rssi_threshold = -75,
};

void app_wifi_set_softap_info(void)
{
    char softap_ssid[32];
    uint8_t softap_mac[6];
    esp_wifi_get_mac(WIFI_IF_AP, softap_mac);
    memset(softap_ssid, 0x0, sizeof(softap_ssid));

#ifdef CONFIG_BRIDGE_SOFTAP_SSID_END_WITH_THE_MAC
    snprintf(softap_ssid, sizeof(softap_ssid), "%.25s_%02x%02x%02x", CONFIG_BRIDGE_SOFTAP_SSID, softap_mac[3], softap_mac[4], softap_mac[5]);
#else
    snprintf(softap_ssid, sizeof(softap_ssid), "%.32s", CONFIG_BRIDGE_SOFTAP_SSID);
#endif

    esp_mesh_lite_set_softap_ssid_to_nvs(softap_ssid);
    esp_mesh_lite_set_softap_psw_to_nvs(CONFIG_BRIDGE_SOFTAP_PASSWORD);
    esp_mesh_lite_set_softap_info(softap_ssid, CONFIG_BRIDGE_SOFTAP_PASSWORD);

    
    esp_err_t result = esp_mesh_lite_set_fusion_config(&fusion_config);
    if (result == ESP_OK)
    {
       // RSSI threshold list set successfully
        ESP_LOGI(TAG, "RSSI esp_mesh_lite_set_fusion_config set successfully");
     }
    else
    {
       // Failed to set the RSSI threshold list
         ESP_LOGI(TAG, "RSSI esp_mesh_lite_set_fusion_config set Failed");
     }
}



main(){
esp_bridge_create_all_netif();
    app_wifi_init();

    esp_mesh_lite_config_t mesh_lite_config = ESP_MESH_LITE_DEFAULT_INIT();
    esp_mesh_lite_init(&mesh_lite_config);
    esp_event_handler_instance_register(ESP_MESH_LITE_EVENT, ESP_EVENT_ANY_ID, &esp_mesh_lite_event_cb, NULL, NULL);
    // set 1 level node ,is mesh root node
    //  esp_mesh_lite_set_allowed_level(1);
    app_wifi_set_route_info();
    app_wifi_set_softap_info();
    esp_mesh_lite_scan_cb_register(&mesh_lite_scan_cb);

}