how to set only 1 advertisement channel for mesh?

[swap007]

Hello devzone,

There are 3 {37,28,29} channels for advertisement & i want to advertise only on 37.

Soft: Nordic mesh v1.0.0 stack & pca10040 nrf board, light switch example.

Try 1

I saw a function set_default_advertiser_configuration() (in /mesh/bearer/src/advertiser.c) which leads me to nrf_mesh_defines.h has a #define NRF_MESH_ADV_CHAN_ALL {37, 38, 39} I changed the values to 37 & servers unable to provisioned, am i missing something to configure to advertise only 1 channel? Thanks

Try 2 

mesh/core/src/core_tx_adv.c in core_tx_adv_init() i set_channels after advertiser_instance_init

set_channels.channels.count = 1;
set_channels.channels.randomize_order = 0;
set_channels.channels.channel_map[0] = 37;

advertiser_channels_set(&m_advertisers[CORE_TX_ROLE_ORIGINATOR],&set_channels); 

Unfortunately, mesh stack unable to initialize.

[Bjørn Kvaale]

What kind of errors are you getting? Are you able to compile the light switch example client & server code? Do you have a log that you could upload? Have you tried debugging the client example? Did you remember to make the changes to both the advertiser & server? 

[swap007]

Hi Bjorn thanks for you reply.

Yes, i am able to compile example client & server code in both trys.

For try 1

I see servers doesn't get always provisioned, sometimes one of the servers get provisioned ! 

i only changes at #define NRF_MESH_ADV_CHAN_ALL {37} , would it be change client as well client settings as nrf_mesh_init() is called from nrf_mesh_node_config ref: /mesh/access/src/nrf_node_config.c line:266 if not can u please point me out where i need to make changes ?

Try 2 code diff is also attached.

diff --git a/mesh/core/src/core_tx_adv.c b/mesh/core/src/core_tx_adv.c
index 29ca192..6c1dfa7 100644
--- a/mesh/core/src/core_tx_adv.c
+++ b/mesh/core/src/core_tx_adv.c
@@ -108,6 +108,7 @@ static void packet_discard(const core_tx_metadata_t * p_meta                                                                                                                                                                                                         data, uint8_t * p_pa
 /*****************************************************************************
 * Interface functions
 *****************************************************************************/
+advertiser_channels_t set_channels;
 void core_tx_adv_init(void)
 {
     m_adv_tx_count[CORE_TX_ROLE_ORIGINATOR] = CORE_TX_REPEAT_ORIGINATOR_DEFAULT                                                                                                                                                                                                         ;
@@ -115,6 +116,10 @@ void core_tx_adv_init(void)
                              adv_tx_complete_callback,
                              m_originator_adv_packet_buffer,
                              sizeof(m_originator_adv_packet_buffer));
+    set_channels.count = 1;
+    set_channels.randomize_order = 0;
+    set_channels.channel_map[0] = 37;
+    advertiser_channels_set(&m_advertisers[CORE_TX_ROLE_ORIGINATOR],&set_channe                                                                                                                                                                                                         ls);
     advertiser_enable(&m_advertisers[CORE_TX_ROLE_ORIGINATOR]);

     m_adv_tx_count[CORE_TX_ROLE_RELAY] = CORE_TX_REPEAT_RELAY_DEFAULT;
@@ -122,8 +127,8 @@ void core_tx_adv_init(void)
                              NULL,
                              m_relay_adv_packet_buffer,
:
 /*****************************************************************************
 * Interface functions
 *****************************************************************************/
+advertiser_channels_t set_channels;
 void core_tx_adv_init(void)
 {
     m_adv_tx_count[CORE_TX_ROLE_ORIGINATOR] = CORE_TX_REPEAT_ORIGINATOR_DEFAULT;
@@ -115,6 +116,10 @@ void core_tx_adv_init(void)
                              adv_tx_complete_callback,
                              m_originator_adv_packet_buffer,
                              sizeof(m_originator_adv_packet_buffer));
+    set_channels.count = 1;
+    set_channels.randomize_order = 0;
+    set_channels.channel_map[0] = 37;
+    advertiser_channels_set(&m_advertisers[CORE_TX_ROLE_ORIGINATOR],&set_channe                                                                                                                                                                                                         ls);
     advertiser_enable(&m_advertisers[CORE_TX_ROLE_ORIGINATOR]);

     m_adv_tx_count[CORE_TX_ROLE_RELAY] = CORE_TX_REPEAT_RELAY_DEFAULT;
@@ -122,8 +127,8 @@ void core_tx_adv_init(void)
                              NULL,
                              m_relay_adv_packet_buffer,
                              sizeof(m_relay_adv_packet_buffer));
+    advertiser_channels_set(&m_advertisers[CORE_TX_ROLE_RELAY],&set_channels);
     advertiser_enable(&m_advertisers[CORE_TX_ROLE_RELAY]);

     core_tx_bearer_register(CORE_TX_BEARER_ADV, &m_interface);
 }
 
 
 diff --git a/mesh/prov/src/prov_bearer_adv.c b/mesh/prov/src/prov_bearer_adv.c
index 94f044c..dd6aa52 100755
--- a/mesh/prov/src/prov_bearer_adv.c
+++ b/mesh/prov/src/prov_bearer_adv.c
@@ -343,6 +343,11 @@ static void init_bearer_structure(nrf_mesh_prov_bearer_adv_t * p_pb_adv, uint32_
                              tx_complete_cb,
                              p_pb_adv->tx_buffer,
                              NRF_MESH_PROV_BEARER_ADV_TX_BUFFER_SIZE);
+    advertiser_channels_t set_channels;
+    set_channels.channel_map[0] = 37;
+    set_channels.count = 1;
+    set_channels.randomize_order = 0;
+    advertiser_channels_set(&p_pb_adv->advertiser,&set_channels);
 }