Proper way to start/stop advertising?

RE: Proper way to start/stop advertising?

stecla — Mon, 03 Feb 2020 17:52:15 GMT

vould you share that code that you referenced with the 180 seconds between advertising? love to have a look at it for inspiration.

RE: Proper way to start/stop advertising?

Vasiliy Baryshnikov — Tue, 20 Aug 2019 01:08:51 GMT

In SDK 15, if you are using a template derived project, you should use the following statement with the parameter to stop advertising:

sd_ble_gap_adv_stop(m_advertising.adv_handle);

RE: Proper way to start/stop advertising?

Jørgen Holmefjord — Mon, 12 Dec 2016 10:36:39 GMT

The device is not shut down completely, it is put into system off sleep mode. A wakeup from this mode will trigger a reset. You can avoid putting the device into system off mode by removing the call to sleep_mode_enter() on the BLE_ADV_EVT_IDLE event. You can disable the softdevice by calling softdevice_handler_sd_disable(), but make sure you are not advertising or in a connection when calling this. Notice that you will have to initialize the softdevice and all advertising settings before staring advertising again. Also, make sure you are not calling any softdevice functions if you disable the softdevice. Softdevice functions have a sd_ prefix.

RE: Proper way to start/stop advertising?

Lee Daniel Crocker — Fri, 09 Dec 2016 18:23:54 GMT

Looks like all the samples do the same thing: on getting the BLE_ADV_EVT_IDLE, they shut down completely. I can't find any example where they continue without advertising. I wouldn't mind shutting down the whole Bluetooth stack if I could restart it.

RE: Proper way to start/stop advertising?

Lee Daniel Crocker — Fri, 09 Dec 2016 18:19:01 GMT

I'm basing my code on ble_app_uart, but it just advertises once for 180 seconds and then powers down, restarting on the button press. I don't want to shut down, I just want to stop advertising, shut off my display, etc. I tried another tack of just letting it go to IDLE after its timeout, then restarting advertising. That works, but if I don't restart I get a timer crash. If try sd_ble_gap_adv_stop() I get an INVALID_STATE error and then a timer crash. I don't want to shut down, I just want it to shut up.

RE: Proper way to start/stop advertising?

Jørgen Holmefjord — Fri, 09 Dec 2016 10:40:39 GMT

Hi,

If you get NRF_ERROR_INVALID_STATE when calling sd_ble_gap_adv_stop(), it usually means you are not advertising. You will not get this error if you are "between intervals", you will still be in the advertising state. Where are calling sd_ble_gap_adv_stop()? Most of the BLE peripheral examples in the SDK is setup to advertise in 180s and then stop until button 1 is pressed. You can disable this timeout by setting APP_ADV_TIMEOUT_IN_SECONDS to 0. You should easily be able to change the code to stop/start advertising on some other event than the timeot/button. Notice that the device is also going to sleep while advertising. Have a look at the call to power_manage() in the BLE examples.

Best regards,

Jørgen