connection parameters change

RE: connection parameters change

Edvin — Wed, 28 Aug 2019 14:05:18 GMT

Hello,

Phones typically have different preferred connection parameters. iPhones (and Android I believe) prefer to use a multiple of 15ms, which is what you see (connection intervals is set in number of units where each unit is 1.25ms, so 12 units = 15ms). Please check section 23.6 here.

Since it is the central that actually decides the connection parameters in a BLE connection, the phone will decide the connection interval. What the peripheral can do is to request other connection intervals, but the central can decide whether to accept it or reject it. The only thing the peripheral can do then is to disconnect (or accept the given connection interval).

BR,

Edvin

RE: connection parameters change

Jim — Wed, 28 Aug 2019 12:39:40 GMT

I'm connected to my iPhone, and the central device is my phone

RE: connection parameters change

Edvin — Wed, 28 Aug 2019 12:03:13 GMT

Hello,

What are you connecting to? What is the central in the connection?

How do you determine that the new connection parameters are set?

[quote user=""]Conn_sup_timeout: 100
Max_conn_interval: 12
Min_conn_interval: 12
Slave_latency: 4[/quote]

Is it possible to provide a sniffer trace? The nRF Sniffer would be sufficient.

Best regards,

Edvin