how does the Provisioner identify a device as client or server?

[Pavan_Hr]

Hi,

1. I went through the document. I'm trying the example applications Light-Switch on PCA10040 DK and NRF5 SDK for Mesh V2.2.0. So it is like the Client will be provisioned first and then the servers one by one.  I want to know how does the provisioner will decide it's a client/server?

[Joakim Jakobsen]

Hi.

If you take a look at the light_switch_provisioner example in SDK for Mesh v.2.2.0, you can see that you have to press button 1 to start provisioning.
When button 1 is pressed, check_network_state() is called.

And from there, (main.c, line:343) you can see that:

 else if (m_nw_state.provisioned_devices == 0)
        {
            /* Start provisioning - First provision the client with known UUID */
            m_exp_uuid.p_uuid = m_client_uuid_filter;
            m_exp_uuid.length = COMMON_UUID_PREFIX_LEN;
            __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Waiting for Client node to be provisioned ...\n");
            prov_helper_provision_next_device(PROVISIONER_RETRY_COUNT, m_nw_state.next_device_address, &m_exp_uuid, &m_current_uuid[0]);
            prov_helper_scan_start();

            hal_led_pin_set(APP_PROVISIONING_LED, 1);
        }

So the provisioner uses the known UUID to identify and provision the client.
The CLIENT_NODE_UUID is defined in the light_switch_example_common.h file.
The same method is used for the server nodes.

Best regards,
Joakim.

[Pavan_Hr]

Thank you for taking your time Joakim Jakobsen

will the UUID of client be pre-configured wrt to particular client individually?

is there any flow chart of the complete example?

[Joakim Jakobsen]

No problem, happy to help!

You can also take a look at Bjørn's answer in this thread, regarding the same.

Best regards,
Joakim

[Pavan_Hr]

Hi Jaakim,

will the UUID of client be pre-configured wrt to particular client individually?

is there any flow chart of the complete example?

[Joakim Jakobsen]

Not sure what you mean by this.

But the client UUID that the provisioner is looking for will be defined in the example yes.

If you look at the code, the provisioner will be looking for a client with a UUID;
m_exp_uuid.p_uuid = m_client_uuid_filter;

You could look at the information in our infocenter, that might be helpful.
The Quick Start Guide for the nRF5 SDK for Mesh uses the light switch examples as a reference.
Looking at the Provisioning process and APIs might also be useful.

Best regards,
Joakim