Handling Connection Parameter Update Request from Central

[639zw]

Hello, do I need to do anything to accept new Connection Parameters as a Peripheral when the Central updates them?

I am seeing 'BLE_GAP_EVT_CONN_PARAM_UPDATE' events, which makes me believe that the softdevice handled the update and is sending that event (note that I never see a "BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST" event). However, the central makes 3 requests then disconnects with reason=0x08 "BLE_HCI_CONNECTION_TIMEOUT".

I tried calling sd_ble_gap_ppcp_set() with the new parameters, but that disconnects with reason=0x28 "BLE_HCI_INSTANT_PASSED"

Any help is appreciated

[Daniel Wang]

What is the values of MAX_CONN_INTERVAL and MIN_CONN_INTERVAL in the project you are using?

[639zw]

MAX_CONN_INTERVAL=50 msec, MIN_CONN_INTERVAL=25 msec

[Daniel Wang]

Could be that the central don't support these values. Try max=150 and min=10.

[strengthstrong]

I USE MAX_CONN_INTERVAL=75 msec, MIN_CONN_INTERVAL=20 msec,and i use sdk14.2.0 uart example uart , i also have this question BLE_HCI_INSTANT_PASSED, when i Connect thirty or forty minutes

[MartinBL]

EDIT: Answered in wrong thread.