NRF_ERROR_INVALID_STATE when calling access_model_publish() using simple_message_model (nRF52 DK)

[yflt]

Hello,

Using nRF52 DK boards, I'm trying the simple_message_model by modifying the light switch example.

With the client, I simple send a 12 bytes unreliable message by pressing a button.

When I press the button with around 1 second interval, about 2/3 of the access_model_publish() calling reported NRF_ERROR_INVALID_STATE.

How can I send several messages every second? Is it possible?

Mesh SDK version: 3.10

[Mttrinh]

Hi,

When you send packets that are longer than 11 bytes, they will be sent as segmented packets. NRF_ERROR_INVALID_STATE means that there's already a segmented packet to this destination in progress. You have to wait for it to finish before sending new segmented packets. A solution is to wait for the NRF_MESH_EVT_TX_COMPLETE event before sending a new packet.

[yflt]

Thank you for your reply. I’ll try to add some code to handle the NRF_MESH_EVT_TX_COMPLETE event. 

Would you like to tell me with this solution, can I increase throughput to send several messages every second? 

[Mttrinh]

It depends on how how much data you are planning to send. Mesh aren't optimal for sending large amount of data. 

[Pascal__]

Hi, I have the same problem with using the simple_message model and I got a NRF_ERROR_INVALID_STATE for some messages. I set the option 'force_segmented' to false and my messages are not more than 8 bytes. What could be the reason for that?

[Mttrinh]

Hi,

I would suggest you to open a new ticket with more details regarding your issue. That will make it easier for us to help you.