We want to change the communication speed of each peripheral device.

[Sawada]

We want to change the communication speed for each connected peripheral.

*Environment

Peripheral: nrf52832

Central: nrf52840

*Step
1. After the peripheral connects to Central, change the communication parameters. (sd_ble_gap_conn_param_update ())

2. Connect multiple peripherals and set different parameters for each peripheral.

3. [Probrem]Peripheral frequently BLE disconnect. (reason: 0x8 BLE_HCI_CONNECTION_TIMEOUT)

It is unknown why BLE communication is disconnected.
It did not occur when the same value was specified for all Peripherals in Step2.

[Einar Thorsrud]

Hi,

I have some questions:

• Do you have sniffer traces that show the problem?
• Does the BLE_HCI_CONNECTION_TIMEOUT happen only after updating the connection parameters?
  • And in that case, does it happen immediately after?
• Is the central connected to many peripheral at a time?
  • If yes, how many?
• What are the connection parameters before and after the update for the various links?
  • Does some work better than others?

[Sawada]

I'm sorry.
As a result of the investigation, it was not an existing defect but a defect unique to us.
Close this thread.