How to add IS_SRVC_CHANGED_CHARACT_PRESENT to app

[Remco Poelstra]

Hi,

I'm running into issues where iOS is caching the handles. I found out that I need to set IS_SRVC_CHANGED_CHARACT_PRESENT to 1.

But where should I do that? In sdk_config.h?

The solution contains no references to this define, so how does setting it change anything for my application? Or is there more I need to add to add the service changed char?

Thanks in advance.

Kind regards,

Remco Poelstra

[run_ar]

Hi,

iOS will cache your attribute table in case you do not use bonding and the service changed characteristic is missing.

Unfortunately not all projects has all setting sin the sdk_config file. But you should be able to find this in sdk_config In many projects:

#ifndef NRF_SDH_BLE_SERVICE_CHANGED
#define NRF_SDH_BLE_SERVICE_CHANGED 0
#endif

, i.e. The ANCS client.and others. There is also an option to handle service changed notification in PM for bonded devices. To use that you need to enable:

#ifndef PM_SERVICE_CHANGED_ENABLED
#define PM_SERVICE_CHANGED_ENABLED 0
#endif

[Remco Poelstra]

Thanks! I had missed that the define was renamed somewhere/sometime.

This is is readily available in my sdk_config.h and works like a charm.