Factory Reset function and erasing EnOcean switch data

[Aryan]

I am trying to erase the EnOcean switch data without erasing the board. node_reset() function isn't erasing the EnOcean switch data after commissioning. 

I would like to know how to erase the switch data without erasing. 

Also, is there any function defined to perform a factory reset without erasing the board? 

I am investigating about a way to do a factory reset with buttons on the board.

Thank you.

[Aryan]

Simonr said:

By commisioning data do you mean the provisioning data?

By commissioning data, I mean the data of the EnOcean switch which is restored even after resetting the node using the Button 4 on the board or resetting through the nRF Mesh app.

My end goal would be to have a node free from provisioning data and EnOcean switch security materials when i do a node reset.

[Simonr]

Hi

I presented this issue to my colleagues, and while providing a patch for this, we found a bug that took some time to fix. There are two parts to patch/bug fix so follow these steps:

1. In the enocean example's main.c file, call `app_flash_clear(&m_app_secmat_flash[0], sizeof(m_app_secmat_flash));` while handling the `
   EVT_NODE_RESET` in the config server's event handler, as shown below:
    

   --- a/examples/enocean_switch/src/main.c
   +++ b/examples/enocean_switch/src/main.c
   @@ -338,6 +338,8 @@ static void config_server_evt_cb(const config_server_evt_t * p_evt)
    {
        if (p_evt->type == CONFIG_SERVER_EVT_NODE_RESET)
        {
   +        /* Trigger clearing of application data and schedule node reset. */
   +        app_flash_clear(&m_app_secmat_flash[0], sizeof(m_app_secmat_flash));
            node_reset();
        }
    }

2. Bug fix in `mesh_stack.c`, which will ensure that the application data is erased correctly.
   

   --- a/mesh/stack/src/mesh_stack.c
   +++ b/mesh/stack/src/mesh_stack.c
   @@ -203,7 +203,7 @@ bool mesh_stack_is_device_provisioned(void)
    #if PERSISTENT_STORAGE
    static void mesh_evt_handler(const nrf_mesh_evt_t * p_evt)
    {
   -    if (p_evt->type == NRF_MESH_EVT_FLASH_STABLE)
   +    if (flash_manager_is_stable() && p_evt->type == NRF_MESH_EVT_FLASH_STABLE)
        {
            device_reset();
        }
    }     
   -- 
   2.17.1.windows.2 

   
   

Editing these two files accordingly should make the EnOcean switch node reset work properly.

Best regards,

Simon

[Aryan]

Hi,

That solved the issue. Thanks