Enabling and disabling Bluetooth

Question

Hi there, 
 I'm currently working on a project in which I need to be able to deactivate Bluetooth advertising at the press of a button. I am using SDK 15.3 and have built a custom service from the ble_app_template example, following this tutorial . I have been able to get Bluetooth communication up and running, but am having difficulty deactivating it without causing the script to fail. To clarify, all I need it to do is to disable communication, not necessarily disable the entire module. 
 Here is the way I am currently enabling Bluetooth (working): 
 /**@brief Function for starting advertising.
 */
static void advertising_start(bool erase_bonds)
{
 if (erase_bonds == true)
 {
 delete_bonds();
 // Advertising is started by PM_EVT_PEERS_DELETED_SUCEEDED event
 }
 else
 {
 ret_code_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);

 APP_ERROR_CHECK(err_code);
 }
} 
 And this is the function I'm trying to use to disable it: 
 static void advertising_disconnect(void)
{
 ret_code_t err_code;

 // If connected, disconnect
 if (m_conn_handle != BLE_CONN_HANDLE_INVALID)
 {
 err_code = sd_ble_gap_disconnect(m_conn_handle,
 BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
 APP_ERROR_CHECK(err_code);
 }
 // Stop advertising
 err_code = sd_ble_gap_adv_stop(m_advertising.adv_handle);
 APP_ERROR_CHECK(err_code);
} 
 When the button is pressed while no connected has been established, it hangs on sd_ble_gap_adv_stop() and will not reach the APP_ERROR_CHECK. 
 When the button is pressed while connected to a device, sd_ble_gap_disconnect() will work, but an error is generated at sd_ble_gap_adv_stop(). 
 Is there a specific file I need to include in order to use sd_ble_gap_adv_stop()? Or maybe another way to achieve this? 
 *I have also tried using ble_advertising_start() to enter IDLE mode as a way of disabling communication but have not been able to get this to work either. 
 Any help would be much appreciated. 
 Cheers, 
 Charlie

Charlie Tuer · Accepted Answer

Hi, 
 I finally managed to get everything working the other day. My main mistake was trying to run advertising_stop() immediately after advertising_disconnect() as the stop function would be called before the disconnect event was complete. To fix this, I added the stop function to the end of my BLE_GAP_EVT_DISCONNECTED event structure to ensure it was competed first (sd_ble_gap_disconnect(), once complete, will generate the BLE_GAP_EVT_DISCONNECTED evt_id and thus trigger the observer leading to the event handler). 
 Thank you for your help, 
 Charlie

Enabling and disabling Bluetooth

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