BLE Mesh unacknowledged messages

[Mela]

Hi,

I am using two nrf52840 boards and a Light-Switch example included in the mesh SDK_v5.0. The Client sends unacknowledged messages to the Server (APP_UNACK_MSG_REPEAT_COUNT is set to 1).  

I have enabled logging via RTT for this example to see when the message gets sent from the client and when the server receives the message.

In the Debug Terminal area (Client) I see:

<t:     557514>, main.c,  279, Sending msg: ONOFF SET 0
<t:     557524>, access.c,  425, TX: [aop: 0x8203]
<t:     557526>, access.c,  426, TX: Msg: 82030001010A
<t:     557536>, access.c,  425, TX: [aop: 0x8203]
<t:     557538>, access.c,  426, TX: Msg: 82030001010A
<t:     560825>, access.c,  425, TX: [aop: 0x8203]
<t:     560827>, access.c,  426, TX: Msg: 82030001010A
<t:     623050>, main.c,  279, Sending msg: ONOFF SET 1
<t:     623060>, access.c,  425, TX: [aop: 0x8203]
<t:     623062>, access.c,  426, TX: Msg: 82030102010A
<t:     623072>, access.c,  425, TX: [aop: 0x8203]
<t:     623074>, access.c,  426, TX: Msg: 82030102010A
<t:     626361>, access.c,  425, TX: [aop: 0x8203]
<t:     626363>, access.c,  426, TX: Msg: 82030102010A

 

So I can see that the message was sent three times. And I don't understand why 3 times. I was expecting that it would be sent only once.

I would be grateful for any explanation. Thanks!!!

 

Best regards!

[Mttrinh]

Hi,

Have you made any modifications to the examples? What is CORE_TX_REPEAT_ORIGINATOR_DEFAULT set to?

[Mttrinh]

Hi, 

I think this is because of the retransmit_count is set to 3 which is found inside the publication parameters struct, config_publication_params_t.