questions about mesh message publication

RE: questions about mesh message publication

William.wei — Wed, 23 Jul 2025 06:01:59 GMT

hi edvin,

i believe it is in the library and can't be configured.

Regards,

William.

RE: questions about mesh message publication

Edvin — Fri, 16 May 2025 12:52:18 GMT

Try CONFIG_BT_MESH_NETWORK_TRANSMIT_INTERVAL (and for relay messages, it would be CONFIG_BT_MESH_RELAY_RETRANSMIT_INTERVAL).

Best regards,

Edvin

RE: questions about mesh message publication

William.wei — Fri, 16 May 2025 02:07:16 GMT

hi Edvin,

if those are set, it would be as below:

what i ask is the time cost inside the first transmit.

Regards,

William.

RE: questions about mesh message publication

Edvin — Wed, 14 May 2025 13:44:20 GMT

[quote user="Edvin Holmseth"]

The relay count can be set using CONFIG_BT_MESH_RELAY_RETRANSMIT_COUNT

The transmit count can be set using CONFIG_BT_MESH_NETWORK_TRANSMIT_COUNT

[/quote]

Have you tried setting these?

RE: questions about mesh message publication

William.wei — Tue, 13 May 2025 04:22:21 GMT

hi Edvin，

i mean in it costs 58ms to send packet in 37,38,39 then 37,38,39,then 37,38,39:

Regards,

WIlliam.

RE: questions about mesh message publication

Edvin — Fri, 09 May 2025 13:40:34 GMT

[quote user="William.wei"]

so everytime button pressed, the time i from publish_start to publish_sent callback tooks 58ms and send the channel37,38,39 for three times internally.

[/quote]

Do you mean that it sends one time on channel 37, one time on channel 38 and one time on channel 39, or three times on each?

And what do you want to change it to?

RE: questions about mesh message publication

William.wei — Thu, 08 May 2025 07:34:20 GMT

[quote userid="26071" url="~/f/nordic-q-a/121216/questions-about-mesh-message-publication/534237"]

The relay count can be set using CONFIG_BT_MESH_RELAY_RETRANSMIT_COUNT

The transmit count can be set using CONFIG_BT_MESH_NETWORK_TRANSMIT_COUNT

[/quote]

no, it is not this parameter, i have set them to 0 as below:

and here is the log from terminal:

[00:03:45.292,144] [0m<dbg> bt_mesh_access: mod_publish: timestamp: 225292[0m

[00:03:45.350,677] [0m<dbg> bt_mesh_access: publish_sent: err 0, time 225350[0m

[00:03:45.350,708] [0m<dbg> bt_mesh_access: next_period: Publishing took 58ms[0m

static const struct bt_mesh_send_cb pub_sent_cb = {

.start = publish_start,

.end = publish_sent,

};

so everytime button pressed, the time i from publish_start to publish_sent callback tooks 58ms and send the channel37,38,39 for three times internally.

how can we change it?

Regards,

William.

RE: questions about mesh message publication

Edvin — Wed, 07 May 2025 09:18:49 GMT

Hello William,

The address is changing for privacy reasons. If you, however, for debugging purposes, want to keep using the same address, you can set CONFIG_BT_MESH_DEBUG_USE_ID_ADDR=y in prj.conf. This is not recommended for production. From NCS\zephyr\subsys\bluetooth\mesh\Kconfig:

config BT_MESH_DEBUG_USE_ID_ADDR    
    bool "Use identity address for all advertising"    
    help    
      This option forces the usage of the local identity address for    
      all advertising. This can be a help for debugging (analyzing    
      traces), however it should never be enabled for a production    
      build as it compromises the privacy of the device.

[quote user=""]2.how to set the default trasmission（seems it is 3 internally） , if customer want to set this to 4 or 5[/quote]

There are two parameters for this. One for relayed messages (messages that are picked up, and retransmitted out to the network), and one for when you are the originator of the message.

The relay count can be set using CONFIG_BT_MESH_RELAY_RETRANSMIT_COUNT

The transmit count can be set using CONFIG_BT_MESH_NETWORK_TRANSMIT_COUNT

Best regards,

Edvin