Creating a second advertising set with bt_le_ext_adv_create will generate an error -12 (ENOMEM)

[Ignacio]

Creating  a second advertising set with bt_le_ext_adv_create will generate an error -12.

Using nRF Connect SDK v1.8.0

The second advertising set is use for FOTA update.

The error is related to memory availabilty

#define ENOMEM 12       /**< Not enough core */

Is that lack of core ram or flash? How to increase the core memory?

Thanks

[Vidar Berg]

Hello,

ENOMEM in this context indicates that you need to allocate more memory to the adv_pool here: https://github.com/nrfconnect/sdk-zephyr/blob/eb0141519f9c278ed2c255f461b8eb82bd3566df/subsys/bluetooth/host/adv.c#L62 by increasing the CONFIG_BT_EXT_ADV_MAX_ADV_SET setting in your project (usually in the prj.conf file). You may also need to increase the CONFIG_BT_MAX_CONN if you are going to have multiple connectable advertisements running concurrently.

Best regards,

Vidar