Turn LED off when not advertising nrf 52840 PCA10059 SDK 15.3

Question

Good day 
 Im trying to switch off an LED when my relay/hopper is not advertising. I switch the LED on successfully when transmission starts but I'm struggling to do the sd_ble_gap_adv_stop check to switch the led off. This is a simple relay/hopper and retransmits the MAC address of a received beacon + its own address. It works very well and I manage to stop the advertising successfully after a tiem out. Just need to switch the LED off. 
 The scanning part 
 static void advertising_init(void) // no more than 31 bytes 
{ 
 uint32_t err_code;
 ble_advdata_t advdata; // no more than 31 bytes
 uint8_t flags = BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED;

 ble_advdata_manuf_data_t manuf_specific_data;
 manuf_specific_data.company_identifier = APP_COMPANY_IDENTIFIER;
 manuf_specific_data.data.p_data = (uint8_t *) m_beacon_info;

 if (g_setAdvData) // if a mac address is received from a beacon build a payload consisting of repeater mac + beacon mac
 { 

 //mac address of the repeater (this device) added to payload
 manuf_specific_data.data.p_data [6]=repeater_mac_addr.addr[0]; // Local mac address
 manuf_specific_data.data.p_data [7]=repeater_mac_addr.addr[1]; // Local mac address
 manuf_specific_data.data.p_data [8]=repeater_mac_addr.addr[2]; // Local mac address
 manuf_specific_data.data.p_data [9]=repeater_mac_addr.addr[3]; // Local mac address
 manuf_specific_data.data.p_data [10]=repeater_mac_addr.addr[4]; // Local mac address
 manuf_specific_data.data.p_data [11]=repeater_mac_addr.addr[5]; // Local mac address 
 //cant go higher than 22
 
 //mac address of the beacon (received by this device) added to payload
 manuf_specific_data.data.p_data [12]= Beacon_mac_addr[0]; // Beacon MAC address
 manuf_specific_data.data.p_data [13]= Beacon_mac_addr[1]; // Beacon MAC address
 manuf_specific_data.data.p_data [14]= Beacon_mac_addr[2]; // Beacon MAC address
 manuf_specific_data.data.p_data [15]= Beacon_mac_addr[3]; // Beacon MAC address
 manuf_specific_data.data.p_data [16]= Beacon_mac_addr[4]; // Beacon MAC address
 manuf_specific_data.data.p_data [17]= Beacon_mac_addr[5]; // Beacon MAC address
 
 g_setAdvData = false; // turn off the set adv data and wait for next mac to come
 }

//shows the manuf payload of ble 
/*NRF_LOG_RAW_INFO("%02x%02X%02X%02X%02X
",
 manuf_specific_data.data.p_data [15], manuf_specific_data.data.p_data [16],
 manuf_specific_data.data.p_data [17], manuf_specific_data.data.p_data [18],
 manuf_specific_data.data.p_data [19], manuf_specific_data.data.p_data [20]);*/

NRF_LOG_RAW_INFO("Re-transmitting initial scanner MAC %02x:%02x:%02x:%02x:%02x:%02x ",initial_scanner_mac_addr[5], initial_scanner_mac_addr[4], initial_scanner_mac_addr[3], initial_scanner_mac_addr[2], initial_scanner_mac_addr[1], initial_scanner_mac_addr[0])
NRF_LOG_RAW_INFO("Re-transmitting Beacon found MAC %02x:%02x:%02x:%02x:%02x:%02x
",Beacon_mac_addr[0], Beacon_mac_addr[1], Beacon_mac_addr[2], Beacon_mac_addr[3], Beacon_mac_addr[4], Beacon_mac_addr[5])
 
 nrf_gpio_pin_clear(NRF_GPIO_PIN_MAP(1, 9)); // green led on to show advertising is on the go 
 // nrf_delay_ms(10);
 // nrf_gpio_pin_set(NRF_GPIO_PIN_MAP(1, 9)); // green led off

 manuf_specific_data.data.size = APP_BEACON_INFO_LENGTH;

 // Build and set advertising data.
 memset(&advdata, 0, sizeof(advdata));

 advdata.name_type = BLE_ADVDATA_NO_NAME;
 advdata.flags = flags;
 advdata.p_manuf_specific_data = &manuf_specific_data;

 // Initialize advertising parameters (used when starting advertising).
 memset(&m_adv_params, 0, sizeof(m_adv_params));

 m_adv_params.properties.type = BLE_GAP_ADV_TYPE_NONCONNECTABLE_NONSCANNABLE_UNDIRECTED;
 m_adv_params.p_peer_addr = NULL; // Undirected advertisement.
 m_adv_params.filter_policy = BLE_GAP_ADV_FP_ANY;
 m_adv_params.interval = NON_CONNECTABLE_ADV_INTERVAL;
 m_adv_params.duration = 300; // time out

 err_code = ble_advdata_encode(&advdata, m_adv_data.adv_data.p_data, &m_adv_data.adv_data.len);
 APP_ERROR_CHECK(err_code);

 err_code = sd_ble_gap_adv_set_configure(&m_adv_handle, &m_adv_data, &m_adv_params);
 APP_ERROR_CHECK(err_code);
} 
 
 end loop while waiting for new data to come in for retransmission. I think this is where I need to switch my " adv in progress LED off" 
 for (;;)
 {

 if ( ) {nrf_gpio_pin_set(NRF_GPIO_PIN_MAP(1, 9));} // green led off



 if(g_setAdvData)
 {

 sd_ble_gap_adv_stop(m_adv_handle); 
 
 
 advertising_init(); // load the new data for payload

 // if put something here to double check its not retransmitting something thats just been relayed, avoid an endless loop
 // {
 advertising_start(); // start advertising

 // }
 g_setAdvData = false; // turn of get new adv
 }

 idle_state_handle();
 }
 
 From what I have seen on the forum here https://devzone.nordicsemi.com/f/nordic-q-a/14071/check-if-currently-advertising 
 in my "if ( ) " statement that is currently blank I need to check for a NRF_Success error code return but have not had any success. 
 any suggestions will be welcomed? :)

Edvin · Accepted Answer

Ok, so you don't include the files ble_advertising.c/h at all? If you want to use the advertising events, I suggest that you include this file, and use this module. What this does is that it registers ble_advertising_on_ble_evt() as an event handler for the softdevice. 
 Otherwise, I believe the only way to determine whether you are advertising or not is to start a timer with the same duration as your advertising timeout. Alternatively, don't set an advertising timeout, but start a timer to manually stop the advertising using sd_ble_gap_adv_stop, and at the same time turn off the LED. 
 
 Best regards, 
 Edvin

Turn LED off when not advertising nrf 52840 PCA10059 SDK 15.3

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