Advertising Interval iOS requirements

[jemajuca]

Hello. Apple recommends some very specific and precise advertising intervals for achieve a quick discovery, as stated on the Bluetooth Accessory Design Guidelines for Apple Products, section 3.5, Advertising Interval. Considering the effect of the advDelay, it seems impossible to match with the Apple requirements. Let's say I want to select 318.75 ms, which value should be selected? Which should be the correct advertising interval setting? 324? (319 + advdelay/2) Regards.

[endnode]

Do you refer to Apple Bluetooth Dev Guidelines R7 or they released something newer? When it comes to adv. interval then basic unit is 1.25ms so anything which is divisible by this number can be achieved. When it comes to duration of particular advertisement mode then Nordic Soft Device allows time-out only in seconds so whatever more fine-grained must be managed by custom application timer.