Writing a custom version of ble_advertising_init?

[Roger Clark]

I'd like to be able to quickly update the advertising data using

sd_ble_gap_adv_data_set()

and at the moment I'm doing this via a bit of a hack, as I captured the advertising packet, and worked out the offset to the manufacturer data, so I can just change values in that data and then call sd_ble_gap_adv_data_set() passing an array of bytes

But I know this is a bit of a hack, so I thought I'd copy the code from ble_advertising_init(), and get my own copy to save the advertising data, and also store the location of the manufacturer data, so that I could cleanly update just the manufacturer data using sd_ble_gap_adv_data_set()

However, this does not seem to be possible, because ble_advertising.c contains static variables including

static bool m_initialized;

which need to be configured, or the advertising doesn't seem to work.

(My current hack is to call ble_advertising_init() to get it to setup its internal variables, but then call sd_ble_gap_adv_data_set() with my previously captured data.)

As far as I can see, the only way I can do this, is to have a duplicate function for ble_advertising_init() where I save the advertising data array (actually I'd need to duplicate some other functions like ble_advdata_set() as I need the data just prior to it being sent to the SD.)

But I'd still need to call ble_advertising_init(), otherwise I can't get the advertising to start, by calling ble_advertising_start as m_initislized is not set.

Can you advise the best way to just update the manufacturer data, that doesn't take a lot of unnecessary processing cycles

Thanks

[Vyacheslav Lebets]

Hi, Roger.

"(My current hack is to call ble_advertising_init() to get it to setup its internal variables, but then call sd_ble_gap_adv_data_set() with my previously captured data.)" - this is a normal solution.

So:

1. call advertising_init(...) - where You fill ble_advdata_t
2. call sd_ble_gap_adv_data_set() to set ble_advdata_t
3. call ble_advertising_start(...)

No other choice.

Best...

[Roger Clark]

(LOL)

Thanks @Vyacheslav Lebets

OK. I thought I was doing a bit of a hack, because of my lack of knowledge of the API ;-)

[Vyacheslav Lebets]

I do the same ;)

[run_ar]

Sounds like a reasonable "hack" to me. Another option could be to remove the advertisement modul altogheter and copy the advertisement_init function from the main file in one of our older SDK's (pre SDK 8). I haven't looked at what other implications this woud cause though...