stop Ble advertising

[ALi]

I want to stop advertising for 8 hours but when I use

		sd_ble_gap_adv_stop();
		sd_ble_gap_connect_cancel();

It starts advertising after 1 or 2 secends again. I think SoftDevice start that but how I stop or start that manually without SD management?

[Martin]

Hi

the best shot you can take is use the WDT.

Here is an example, which wakesup after 60min

static uint16_t wdt_time = 3600; //3600 s = 60 min = 1 hr

     void wdt_init(void)
    {
    	NRF_WDT->CONFIG = (WDT_CONFIG_HALT_Pause << WDT_CONFIG_HALT_Pos) | ( WDT_CONFIG_SLEEP_Run << WDT_CONFIG_SLEEP_Pos);   //Configure Watchdog. a) Pause watchdog while the CPU is halted by the debugger.  b) Keep the watchdog running while the CPU is sleeping.
    	NRF_WDT->CRV = wdt_time*32768;             //wdt_time in s
    	NRF_WDT->RREN |= WDT_RREN_RR0_Msk;  //Enable reload register 0
    	NRF_WDT->TASKS_START = 1;           //Start the Watchdog timer
    }

So fater all your prozessing all you do is put the peripheral into sleep or system off. After 60 min the watchdog will fire and reset(!!!) the device, meaning you will lose all RAM data.

Hope this helps

Martin

[Ole Bauck]

You are sure you are not running into an error condition and reset? See this. sd_ble_gap_connect_cancel() is used during connection establishment, you should rather use sd_ble_gap_disconnect(). Also the order is wrong, this is the correct way to do it:

• Disconnect
• Wait for disconnect event (BLE_GAP_EVT_DISCONNECTED)
• Stop advertising (the advertising module will start advertising on disconnect, see ble_advertising_on_ble_evt(..) function. Alternatively you can avoid start advertising).

[ALi]

thanks. but how I can put BLE in very low Energy mode and just scanning some IO every 20ms and start BLE after 8 hours for 10 min advertising for send data?

[ALi]

thank you so much. but I want to scan IO pin every 20ms, and I want to run only this function not BLE.

[Ole Bauck]

You can setup regular tasks using app_timer, take a look at this tutorial.