triggering model reset handler

[Ubaid_M]

Hi, 

I have implemented a set of custom mesh models on nCS. In vendor models we have reset handlers, as in nrf documentation: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.0.0/nrf/ug_bt_mesh_vendor_model_dev_overview.html#:~:text=The%20model%20reset%20handler%20is%20called%20when%20the%20mesh%20node%20is%20reset

I have two questions here:

1. What are the guidelines to write reset handlers, I mean what should they do..?
2. How do I trigger reset handlers to test..? I do not know how a node is reset, hence kindly suggest how to trigger reset handler.

Thanks,

[AHaug]

Hi,

I will consult with some of my colleagues early next week regarding your questions, but in the meanwhile could you elaborate a bit about your questions for me:

What are the guidelines to write reset handlers, I mean what should they do..?

Correct me if I am wrong, but from the documentation you just linked I would think the reset handler should do the following: "The model reset handler is called when the mesh node is reset. All of the model’s configuration is deleted on reset, and the model should clear its state. If the model stores any persistent data, this needs to be erased manually", 

How do I trigger reset handlers to test..? I do not know how a node is reset, hence kindly suggest how to trigger reset handler.

You could try to call this function to reset the node: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/connectivity/bluetooth/api/mesh/cfg_cli.html?highlight=node%20reset#c.bt_mesh_cfg_node_reset

Let me know if any of this helps, and please feel free to add more information regarding your ticket!

Kind regards,
Andreas

[Ubaid_M]

Hello,

AHaug said:

"The model reset handler is called when the mesh node is reset. All of the model’s configuration is deleted on reset, and the model should clear its state. If the model stores any persistent data, this needs to be erased manually",

Noted on this.

AHaug said:

You could try to call this function to reset the node:

I need to know where do we call this function from..?

As an opcode callback..?

Because I believe nrf mesh app provides reset button to each model, which triggers a model reset API.

So, i would want to know the standard way of resetting the model. I mean where in code to call the reset callback..?

Thanks,

[Ubaid_M]

Hi,

To be more specific, each model has below instance of "bt_mesh_model_cb"

const struct bt_mesh_model_cb _bt_mesh_srv_cb =
{
	.init = bt_mesh_srv_init,
	.start = bt_mesh_srv_start,
	.reset = bt_mesh_srv_reset,
};

I need to know how to invoke ".reset"

[AHaug]

Hi,

I believe our Mesh samples shows how to use the callback function to invoke the reset, and it is often called with a button (often set to button number 4), I will take a closer look at this tomorrow and see if I can find a specific sample!

Kind regards,
Andreas

[Ubaid_M]

Hello AHaug,

AHaug said:

our Mesh samples shows

Here you suggested entire mesh model documentation, no where I found on how to invoke ".reset"..?
Kindly suggest :

Ubaid_M said:

Hi,

To be more specific, each model has below instance of "bt_mesh_model_cb"

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const struct bt_mesh_model_cb _bt_mesh_srv_cb =

{

.init = bt_mesh_srv_init,

.start = bt_mesh_srv_start,

.reset = bt_mesh_srv_reset,

};

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

const struct bt_mesh_model_cb _bt_mesh_srv_cb =
{
	.init = bt_mesh_srv_init,
	.start = bt_mesh_srv_start,
	.reset = bt_mesh_srv_reset,
};

I need to know how to invoke ".reset"

[AHaug]

Hi,

Apologies for the delay, I were not able to find a specific sample that showed how this is done. I will have to ask around some more to see if I can find a sample that illustrates this properly. 

I will get back to you on monday.

Kind regards,
Andreas