ESP32 esp-idf BLE Mesh Save/Delete Parameters

milad_m · February 14, 2023, 6:54am

Hi
I have a question that I can not find my answer to.
I know that to save the BLE Mesh parameters and network configuration, I can check the Store BLE Mesh configuration in the “menuConfig”.
(*) Store BLE Mesh configuration persistently

so After resetting the ESP32 it’s restored automatically and my node is still joined to the network.
my question is
How can I delete the saved configuration and again save this configuration for a node?
I mean when my node joined to the network and that config save the network parameter to NVS flash how can I read that data and erase or rewrite it again?
Is there any function to manage it?
Does anyone know?
Regards.

maxgerhardt · February 14, 2023, 11:04am

Seraching for that string in ESP-IDF leads you to the component where it’s declared and subsequently to CONFIG_BLE_MESH_SETTINGS being used in e.g.

github.com

espressif/esp-idf/blob/175e5fc260bedaa17d0e55788fa5c36ba3076a72/components/bt/esp_ble_mesh/mesh_core/main.c#L86-L91


      
          if (IS_ENABLED(CONFIG_BLE_MESH_SETTINGS)) {
              BT_DBG("Storing network information persistently");
              bt_mesh_store_net();
              bt_mesh_store_subnet(&bt_mesh.sub[0]);
              bt_mesh_store_iv(false);
          }

And not long after that is

github.com

espressif/esp-idf/blob/175e5fc260bedaa17d0e55788fa5c36ba3076a72/components/bt/esp_ble_mesh/mesh_core/main.c#L142-L146


      
          if (IS_ENABLED(CONFIG_BLE_MESH_SETTINGS)) {
              bt_mesh_clear_net();
              bt_mesh_clear_seq();
              bt_mesh_clear_role();
          }

or just call bt_mesh_node_reset() that does that.

milad_m · February 14, 2023, 12:41pm

thanks but I can not add it to the project
bt_mesh_node_reset();
or
bt_mesh_clear_net();
…
src/BLE_Mesh.c:113:13: error: implicit declaration of function ‘bt_mesh_clear_net’; did you mean ‘bt_mesh_conn_ref’? [-Werror=implicit-function-declaration]
the compiler does not know this lib.
and is it a true way? I think it’s the Sublayer libraries function Can I use them?

maxgerhardt · February 14, 2023, 1:03pm

Per

github.com

espressif/esp-idf/blob/7bd93e3362e212b1e27fbd19a7a45cbe8e0b46ff/components/bt/esp_ble_mesh/mesh_core/include/mesh_main.h#L492-L492


      
          void bt_mesh_node_reset(void);

you need to include mesh_main.h

lilly.m · July 27, 2023, 9:18am

Hi @maxgerhardt ,
I’m getting this error and the node is not getting unprovisioned.
can anyone please help me?
E (945) BLE_MESH: Failed to erase mesh/iv data (err 4359)
E (945) BLE_MESH: Failed to erase mesh/seq data (err 4359)
E (955) BLE_MESH: Failed to erase mesh/role data (err 4359)

maxgerhardt · July 27, 2023, 9:49am

Please ask at Issues · espressif/arduino-esp32 · GitHub with the code you’re using, I have no idea.