BLE Connection Interval

Question

Hi. 
 setup is 52832, SDK15.3.0, S332 
 I set MIn Max connection inverval is 500ms. 
 when connect using nRF Connect app, it is not change immediately connection inverval to 500ms. 
 7.5ms -> 45ms -> 500ms. why does not connect first interval to 500ms? 
 first connection interval (7.5ms) currnet power is raise to high and change 45ms -> 500ms , down normal. 
 I wanna remove first connect about raise current power. 
 Is it possible? 
 Thank you

Sigurd · Accepted Answer

Hi, 
 BEN_HB said: Is it possible? 
 No. 
 It's the BLE central/master that sets initial connection interval, as part of the CONNECT_IND packet (interval field). 
 
 This is usually set relativity low, in order to reduce the time e.g. the service discovery takes. So in most cases a 7.5ms initial connection interval is preferred. The slave can after the initial connection send a Connection Parameter Update Request packet to request the interval to be changed.

BLE Connection Interval

Top Replies