BLE_GATTS_VLOC_USER and volatile variable

[A Knecht]

When using BLE_GATTS_VLOC_USER I would tend to make the variable pointed to by ble_gatts_attr_t.p_value volatile to reflect the situation that the value can be changed by softdevice interrupt handlers at any time, but this entails all kinds of additional casts, e.g. to memset the value. Also, ble_gatts_attr_t.p_value itself isn't volatile.

Is my thinking process wrong?

[run_ar]

Why would you use VLOC_USER? Would it not be better to increase the size of the attribute table to meet your requirements?

You should not need to use volatile for this. And I think you should probably use the SD apis, sd_ble_gatts_value_set and get when interfacing it.