About changing connection parameters

[Sawada]

Central info
   SDK: 15.3
   nRF52840

Peripheral info
   SDK: 13.1
   nRF52832

I want to increase the communication speed after connection.
I want to know how to set the communication speed setting value in Central.

Currently, the setting value of the communication speed is changed by calling the sd_ble_gap_conn_param_update () function from the peripheral.
What functions must be called and the Define value to be changed in order to change the communication speed setting value with Central?

[Simonr]

If you want the connection interval to be as low as possible, you should set both the MIN_CONNECTION_INTERVAL and MAX_CONNECTION_INTERVAL to 7.5ms. For the central application, this is likely set in the sdk_config.h file.

Best regards,

Simon