some promble with s332 ant backgroud scan

[so easy]

Hey, guys, let me ask you a question.I have a device that does bluetooth broadcasting and ant background scanning.After working for 12 hours, the bluetooth broadcast frequency changed to 2.5s once.When I turned off the ant background scan, the bluetooth radio worked again.Using sdk14.2, s332 protocol stack.Have you ever encountered such problem

[so easy]

hi,Kebbeth。last Friday i use ant_search_init(ant_search_config_t const * p_config)to config to config ant.the bluetooth broadcasting is working normal.but i dont no what  cased this? you give document  only say 
may affect co-existence with other protocolson multimode communication chipsets.dont give me reason.Even if it is not initialized, it should not affect bluetooth broadcasting.can you give answer  ?thinks!!

[Kenneth]

If you are not calling ant_search_init(), then the stack will use default search priority:

"When an ANT channel is opened on a slave device, the search is automatically and immediately initiated. ANT will first search in low priority mode, and then will only switch to high priority mode after a defined time out. If the high priority search also times out, then ANT will issue an EVENT_RX_SEARCH_TIMEOUT and close the channel ()."

So if you want to avoid high priority search mode you should call ant_search_init() first.

[so easy]

High priority search may affect bluetooth broadcasting?Why didn't it show up when it first started?It was only when I worked for a long time that it became a problem.Ps: it took a long time for the ant background scan to cause bluetooth broadcasting is working abnormality.

[Kenneth]

Hi,

I believe the reason is: "ANT will first search in low priority mode, and then will only switch to high priority mode after a defined time out."

I suggest you call ant_search_init() to avoid high priority mode to occur, from my understanding you can confirm this works?

When you open scanning channel, what timeout do you define? 

When you start advertising, what timeout do you define?

Best regards,
Kenneth

[so easy]

hi,Kebbeth ,this problem continues.this is my  ant config.

err_code = sd_ant_stack_reset();
APP_ERROR_CHECK(err_code);
err_code = ant_stack_static_config();
APP_ERROR_CHECK(err_code);



// Set Network Address.
pa_lna_assist(TXEN_RFPA,RXEN_RFPA);

ant_channel_config_t channel_config =
{
.channel_number = 0,
.channel_type = CHANNEL_TYPE_SLAVE,
.ext_assign = 0x00,
.rf_freq = ANTPLUS_RF_FREQ,
.transmission_type = 0,
.device_type = 0,
.device_number = 0x00, // Wildcard
.channel_period = 0x00, // Not used, since this is going to be scanning
.network_number = ANTPLUS_NETWORK_NUMBER,
};

err_code = ant_channel_init(&channel_config);
APP_ERROR_CHECK(err_code);

err_code = sd_ant_channel_assign(0,
CHANNEL_TYPE_SLAVE,
ANTPLUS_NETWORK_NUMBER,
0x00);

err_code = sd_ant_network_address_set(ANTPLUS_NETWORK_NUMBER, m_network_key);
APP_ERROR_CHECK(err_code);


err_code = sd_ant_lib_config_set(ANT_LIB_CONFIG_MESG_OUT_INC_RSSI
| ANT_LIB_CONFIG_MESG_OUT_INC_DEVICE_ID);
APP_ERROR_CHECK(err_code);

const ant_search_config_t bs_search_config =
{
.channel_number = 0,
.low_priority_timeout = ANT_LOW_PRIORITY_TIMEOUT_DISABLE,
.high_priority_timeout = ANT_HIGH_PRIORITY_SEARCH_DISABLE,
.search_sharing_cycles = ANT_SEARCH_SHARING_CYCLES_DISABLE,
.search_priority = ANT_SEARCH_PRIORITY_DEFAULT,
.waveform = ANT_WAVEFORM_DEFAULT,
};
err_code = ant_search_init(&bs_search_config);
APP_ERROR_CHECK(err_code);.

I use ant_search_init().There's something wrong with the bluetooth radio.Work at least 14 or above

,the ant background must impacted bluetooth radio.Can you give it a try?thank you very much.