sending data's interval

[Kaito]

Now I am sending data at 250 ms. I'd like to send data at 80 ms. Is this possible?

also,how much can it extend the advertisement interval to the maximum? thank you in advanced.

[endnode]

What does it mean "send" in your application?

Minimal "latency" (delay between two packets with application data) is different for Advertising/Broadcasting and connected Link:

• In advertising you can get as low as 20ms for connectable and 100ms for non-connectable broadcasting (later limitation might be lifted in future Nordic stacks because BT SIG Core specification has lifted it as well) and it's the advertising device which controls this timing entirely.
• For connection link you can get as low as 7.5ms BUT it's basically in hands of Master (Central), even if Peripheral suggests or asks for lower interval it doesn't need to comply. Good is that most of the devices today use 30-50ms interval so it should be OK for your application...