nRF52 serialization: ble_data_item_t

[Erwin v. H.]

It is unclear for me why the following code look like this (conn_ble_gap_sec_keys.c, SDK15):

typedef struct
{
    uint32_t id;
    uint8_t  ble_data[SER_MAX_ADV_DATA];
} ble_data_item_t;

ble_data_item_t m_ble_data_pool[8];

Is it logical that here the SER_MAX_ADV_DATA is used? is there actual advertising data stored in this field?

And why is the data size of 8 for m_ble_data_pool[8] hard coded, is this not the same define as SER_MAX_CONNECTIONS used earlier in the same file?

Regards,

Erwin

[Krzysztof Chruscinski]

Yes, this data is used to copy adv data received from connectivity. Unfortunately, 8 is an arbitrary value and  should come from sdk_config.h. It is not related to max connections. It's rather related to how many advertising configurations is used.

[Erwin v. H.]

OK, so to save RAM I can reduce SER_MAX_ADV_DATA to match the expected max advertising packet of 31 bytes? because i'm only using normal advertising?