Direction Finding Connectionless Tx -> Set up advertising data

[J-R]

Hello everyone,

I have a problem with the direction_finding_connectionless_tx example. I´m working with VS Code and nRF Connect SDK 2.3.0 is installed.

The unmodified example runs just fine but now I want to implement it together with a sensor that gives out some values over SPI and then I want to send these values in the advertising data.

So I use this function to set the advertising data:

printk("set Advertising Data...");
	err = bt_le_ext_adv_set_data(adv_set, &adv_manuf_data, 1, NULL, 0);
	if (err) {
		printk("failed (err %d)\n", err);
		return;
	}
	printk("success\n");

With this advertising data:

static const uint8_t adv_data[] = { 'T', 'e', 's', 't', 'D', 'a', 't', 'a' };
static struct bt_data adv_manuf_data = {
	.type = BT_DATA_MANUFACTURER_DATA,
	.data_len = sizeof(adv_data),
	.data = adv_data,
};

But I get err -5 from the function.

Do I need another function to set advertising data? My understanding is that in the function sets data in the extended avertising channel.

Thanks in advance

J-R

[Elfving]

Hello J-R, sorry about the delay.

Could you change the 1 in:

err = bt_le_ext_adv_set_data(adv_set, &adv_manuf_data, 1, NULL, 0);

to ARRAY_SIZE(adv_manuf_data)?

Regards,

Elfving

[J-R]

Hello Elfving,

i tried the change, but get the following error message:

C:\ncs\v2.3.0\zephyr\include\zephyr\sys\util.h:97:66: error: subscripted value is neither array nor pointer nor vector
   97 |                                               __typeof__(&(array)[0])))
      |                                                                  ^
C:\ncs\v2.3.0\zephyr\include\zephyr\sys\util.h:78:66: note: in definition of macro 'ZERO_OR_COMPILE_ERROR'
   78 | #define ZERO_OR_COMPILE_ERROR(cond) ((int) sizeof(char[1 - 2 * !(cond)]) - 1)
      |                                                                  ^~~~
C:\ncs\v2.3.0\zephyr\include\zephyr\sys\util.h:109:20: note: in expansion of macro 'IS_ARRAY'
  109 |         ((size_t) (IS_ARRAY(array) + (sizeof(array) / sizeof((array)[0]))))
      |                    ^~~~~~~~
c:\Users\j.ross\Desktop\nordic_sdk_projekt\direction_finding_connectionless_tx3\src\main.c:109:64: note: in expansion of macro 'ARRAY_SIZE'
  109 |         err = bt_le_ext_adv_set_data(adv_set, &adv_manuf_data, ARRAY_SIZE(adv_manuf_data), NULL, 0);
      |                                                                ^~~~~~~~~~
C:\ncs\v2.3.0\zephyr\include\zephyr\sys\util.h:109:69: error: subscripted value is neither array nor pointer nor vector
  109 |         ((size_t) (IS_ARRAY(array) + (sizeof(array) / sizeof((array)[0]))))
      |                                                                     ^
c:\Users\user\Desktop\nordic_sdk_projekt\direction_finding_connectionless_tx3\src\main.c:109:64: note: in expansion of macro 'ARRAY_SIZE'
  109 |         err = bt_le_ext_adv_set_data(adv_set, &adv_manuf_data, ARRAY_SIZE(adv_manuf_data), NULL, 0);
      |                                                                ^~~~~~~~~~

In the meantime I tried the "bt_le_per_adv_set_data(adv_set, &adv_manuf_data, 1)" function with which I am able to build the program, but right now I cant confirm if it really works.

What is the difference between these two functions?

[Simonr]

Hi

Sorry about the delayed reply. Due to the Easter vacation we're short on staff, so some waiting time must be expected.

The bt_le_ext_adv_set_data is used to set an advertising set's advertising or scan response data with support for extended advertising data. 

bt_le_per_adv_set_data is used to set or update periodic advertising data. The periodic advertisement data can only be set or updated on an extended advertisement that's neither scannable, connectable nor anonymous.

Error -5 in your initial ticket points to an I/O error. Do you have the full build log of the messages you posted below? The entirety will help us make better sense of it.

What do you mean about "now I can't confirm if it really works" after using the periodic advertising data set?

Best regards,

Simon