Restart the advertising

RE: Restart the advertising

Simonr — Wed, 29 Apr 2020 11:33:02 GMT

It seems like you are having quite a few undeclared identifiers in your applications. Please make sure these are declared in your project and try again.

This ticket is over 1 year old, so if you're having trouble with this, I suggest creating a new ticket describing your issue in detail.

Best regards,

Simon

RE: Restart the advertising

Manoj Hiwarkar — Wed, 29 Apr 2020 09:04:15 GMT

if I write this

//Stop
err_code = sd_ble_gap_adv_stop(m_adv_handle);
APP_ERROR_CHECK(err_code);
NRF_LOG_INFO("Stopping advertising");

//Start
err_code = sd_ble_gap_adv_start(m_adv_handle, APP_BLE_CONN_CFG_TAG);
APP_ERROR_CHECK(err_code);
NRF_LOG_INFO("Starting advertising");

Then I am getting these errors:

./../../main.c: In function 'nus_data_handler':
../../../main.c:205:32: error: 'm_adv_handle' undeclared (first use in this function); did you mean 'm_conn_handle'?
err_code = sd_ble_gap_adv_stop(m_adv_handle);
^~~~~~~~~~~~
m_conn_handle
../../../main.c:205:32: note: each undeclared identifier is reported only once for each function it appears in
../../../main.c:205:12: error: too many arguments to function 'sd_ble_gap_adv_stop'
err_code = sd_ble_gap_adv_stop(m_adv_handle);
^~~~~~~~~~~~~~~~~~~
In file included from ../../../../../../components/softdevice/s132/headers/ble_gap.h:49,
from ../../../../../../components/softdevice/s132/headers/ble.h:52,
from ../../../../../../components/ble/common/ble_advdata.h:55,
from ../../../main.c:56:
../../../../../../components/softdevice/s132/headers/ble_gap.h:1448:39: note: declared here
SVCALL(SD_BLE_GAP_ADV_STOP, uint32_t, sd_ble_gap_adv_stop(void));
^~~~~~~~~~~~~~~~~~~
../../../../../../components/softdevice/s132/headers/nrf_svc.h:64:22: note: in definition of macro 'SVCALL'
static return_type signature \
^~~~~~~~~
../../../main.c:210:47: error: 'APP_BLE_CONN_CFG_TAG' undeclared (first use in this function); did you mean 'BLE_CONN_CFG_GAP'?
err_code = sd_ble_gap_adv_start(m_adv_handle, APP_BLE_CONN_CFG_TAG);

RE: Restart the advertising

AndreasF — Fri, 16 Nov 2018 08:32:33 GMT

Hi.

I've been out of office this week.

Yes, you can use sd_ble_gap_adv_stop() to stop the current instance of advertising, just call it and use your advertising handle as input in the function.

And yes, you can start it again by using sd_ble_gap_adv_start(), just call it and use your advertising hnadle as a input in the function.

- Andreas

RE: Restart the advertising

GK — Sat, 10 Nov 2018 04:01:53 GMT

Hi ,

Suppose if we use ble_advertising_start() to start the advertising.

Can I use sd_ble_gap_adv_stop(). to stop the current instance of advertising?

If yes, what should be the steps to be taken?

Can I use sd_ble_gap_adv_start() to restrat the advertising again after stopping one instance of advertising?

PLease share your ideas on the same.

with regards,

Geetha

RE: Restart the advertising

AndreasF — Fri, 09 Nov 2018 13:23:33 GMT

Hi.

ble_advertising_start() is an API call to start advertising using the Advertising Module. At the bottom of the module, advertising is started by sd_ble_gap_adv_start() (line 657 in ble_advertising.c) If you don't need to do some of the "extra things" you refer to before you start advertising, you don't need to use ble_advertising_start().

If you only need to start or stop advertising you can safely use only sd_ble_gap_adv_start() and sd_ble_gap_adv_stop().

- Andreas

RE: Restart the advertising

GK — Fri, 09 Nov 2018 12:04:28 GMT

Hi Andeas,

Thank you very much for your reply.

That means I am not supposed to use the function "ble_advertising_start()" to start advertising?

And instead of that should I use "sd_ble_gap_adv_start()" directly?

Inside this function "ble_advertising_start()" it uses "sd_ble_gap_adv_start()" and some more things extra.

Please shed some light.

RE: Restart the advertising

AndreasF — Fri, 09 Nov 2018 11:48:01 GMT

Hi.

[quote user="AndreasF"]Look at this question, there is an attached .zip file containing a modified beacon example, where start/stop advertising is implemented as a handle of pressing button 1 (in void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action))[/quote]

Did you look at this? It's pretty straight forward shown how to use the two API's I posted in my previous reply.

The handle is initialized in the top of main.c

static uint8_t              m_adv_handle = BLE_GAP_ADV_SET_HANDLE_NOT_SET; /**< Advertising handle used to identify an advertising set. */

And the pin handler starts and stops advertising.

void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
    ret_code_t err_code;

    nrf_drv_gpiote_out_toggle(PIN_OUT);
   

    if(is_advertising){ 
        err_code = sd_ble_gap_adv_stop(m_adv_handle);
        APP_ERROR_CHECK(err_code);
        NRF_LOG_INFO("Stopping advertising");
        is_advertising = false;
    } else{
        err_code = sd_ble_gap_adv_start(m_adv_handle, APP_BLE_CONN_CFG_TAG);
        APP_ERROR_CHECK(err_code);
        NRF_LOG_INFO("Starting advertising");
        is_advertising = true;
    }
}

You have probably defined &m_advertising as your advertising handle.

- Andreas

RE: Restart the advertising

GK — Fri, 09 Nov 2018 09:25:58 GMT

Hi,

Thank you very much for your response.

My scenario is as follows.

I am using 2 timers.

First timer will wake up for each 5 mins and second one wake up after the first 1 minute.

So when I start the device , it advertises. And initial 1 minute I will do a connect-disconnect method to get the adddresses.

Now once I disconnect the device it will start advertising since the function "ble_advertising_start()" is getting called inside "on_disconnected()" function.

If I want to stop advertising from the main.c file how can I do this?..

how can I get the advertising handle?

Which function I should call from the main function to stop the current advertising instance and to start a new one?

I tried your scenario, but it shows the same problem

Thanking you

RE: Restart the advertising

AndreasF — Fri, 09 Nov 2018 06:59:30 GMT

Hi.

The error code is most likely because when you try to stop advertising, you're not advertising. Look at this question for more information about NRF_ERROR_INVALID_STATE and advertising.

The proper way to start/stop would be:

//Stop
err_code = sd_ble_gap_adv_stop(m_adv_handle);
APP_ERROR_CHECK(err_code);
NRF_LOG_INFO("Stopping advertising");
        
//Start        
err_code = sd_ble_gap_adv_start(m_adv_handle, APP_BLE_CONN_CFG_TAG);
APP_ERROR_CHECK(err_code);
NRF_LOG_INFO("Starting advertising");

Look at this question, there is an attached .zip file containing a modified beacon example, where start/stop advertising is implemented as a handle of pressing button 1 (in void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action))

- Andreas