Changing advertising modes from IDLE to FAST SDK V15.0

Question

I am migrating from SDK v14.2.0 to v15.0.0 and from S132 to S112 (v6) using the NRF52810. I have mostly everything migrated, but a functionality that worked before does not seem to behave correctly now and have not been able to find the root cause. 
 I am using a whitelist, but if there are no peers, the device is started with: ble_advertising_start(&m_advertising, BLE_ADV_MODE_IDLE); 
 and then after a user button press, the device will then switch to advertising without a whitelist: ret_code_t err_code;
 
 m_advertising.adv_mode_current = BLE_ADV_MODE_FAST;
 m_advertising.adv_modes_config.ble_adv_fast_timeout = APP_ADV_NOWHITELEST_TIMEOUT_IN_SECONDS;
 
 err_code = ble_advertising_restart_without_whitelist(&m_advertising);
 if (err_code != NRF_ERROR_INVALID_STATE)
 {
 APP_ERROR_CHECK(err_code);
 } 
 but that results in an error code 7 (NRF_ERROR_INVALID_PARAM). If the device starts out in BLE_ADV_MODE_FAST, instead of BLE_ADV_MODE_IDLE, calling ble_advertising_restart_without_whitelist(), returns correctly. 
 
 Any suggestions? 
 
 Thank you.

amorgan · Accepted Answer

H&aring;vard, 
 Thanks for the reply! This resolved the error I was getting, but it was not setting the duration correctly. 
 Stepping through ble_advertising_start, you will see that 
 memset(&p_advertising->adv_params, 0, sizeof(p_advertising->adv_params)); 
 is called, which clears out the adv_params. Therefore, the following is what was needed to get the duration / timeout to fully work and to not get the original error message: 
 
 static void sleep_mode_enter(void)
{
 ret_code_t err_code;
 
 m_advertising.adv_mode_current = BLE_ADV_MODE_FAST;
 m_advertising.adv_modes_config.ble_adv_fast_timeout = 10000;
 m_advertising.adv_modes_config.ble_adv_fast_interval = APP_ADV_INTERVAL;
 
 m_advertising.adv_params.duration = 10000;
 m_advertising.adv_params.interval = APP_ADV_INTERVAL;

 err_code = ble_advertising_restart_without_whitelist(&m_advertising);
 if (err_code != NRF_ERROR_INVALID_STATE)
 {
 APP_ERROR_CHECK(err_code);
 }
} 
 
 Note also that if m_advertising.adv_params.interval = APP_ADV_INTERVAL; is not set before calling ble_advertising_restart_without_whitelist, I still get the invalid parameters error. Even though I was not intending to change the interval, only duration, this still was needed. 
 
 Is there any documentation on how to correctly change these parameters? It seems as if the new SDK does not handle this as seamlessly as one would expect. 
 
 Also, I am using a whitelist, but in this specific case, where there are no bonds, I do not want the device to be advertising, which does occur when using a whitelist when there are no bonds. Therefore I prevent this from happening by forcing it to go to idle, then on user input, change to advertise without whitelist to get the initial bond. 
 
 Either way, thank you for helping out, this has now solved my issue.

Håvard · Answer

static void sleep_mode_enter(void)
{
 ret_code_t err_code;
 
 m_advertising.adv_mode_current = BLE_ADV_MODE_FAST;
 m_advertising.adv_params.duration = 10000;
 m_advertising.adv_params.interval = APP_ADV_INTERVAL;

 err_code = ble_advertising_restart_without_whitelist(&m_advertising);
 if (err_code != NRF_ERROR_INVALID_STATE)
 {
 APP_ERROR_CHECK(err_code);
 }
} 
 Hi amorgan, try the code above instead. You were setting configs that are only being read during ble_advertising_init(). 
 On a related note, if you are not using whitelist, you should never have to call ble_advertising_restart... 
 instead you can just call ble_advertising_start(&m_advertising,APP_ADV_MODE_FAST) when you get the idle event. 
 Good luck!

Changing advertising modes from IDLE to FAST SDK V15.0

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