Maximum Group subscription of a node in BLE Mesh with NRF52832

[bivay]

The value of 

ACCESS_SUBSCRIPTION_LIST_COUNT  is 7,

but when I add more than 3 group in subscription of a node, its shows insufficient resources error.

What is maximum number of group I can subscribe in a node?

I need at least 10 group to add to a single node.

[Joakim Jakobsen]

Hi. 

I couldn't find any restriction or limit to the number of subscription addresses in the spec. 

Mesh Profile Specification v.1.0.1, page 31: 
A node can have multiple subscriptions per instance of a model’s element, although nodes may limit the number of subscriptions that are supported.

So it seems this is something that would have to be limited in each node. 

Best regards,
Joakim

[bivay]

Then What is caused of resources error adding more then 3 group of subscription.

[Joakim Jakobsen]

Hi. 

In order to add more than 3 subscription addresses, you need to increase the max. number of non-virtual addresses. 

in access.c: line137: 

/** Maximum number of non-virtual addresses.
 * - Generic OnOff publication
 * - Health publication
 * - Subscription address
 */
#define DSM_NONVIRTUAL_ADDR_MAX                         (3)

This value is set to 3 by default in the SDK. Increase it to add more subscription addresses. 

Best regards,
Joakim

[bivay]

Thanks It works.

[Joakim Jakobsen]

That's good to hear! 

If you have any further questions, you are welcome to post another ticket here on devzone! 

Best regards, 
Joakim