Setting Window Offset in a Connection Request

[Torsten Robitzki]

Hello,

I have problems connecting a nrf52 with a TI cc2650. The cc2650 is the peripheral and I can connect to the device from my PC and from some other devices. But when I use a nrf52 eval board that tries to connect to the cc2650, I can sniff the connection request and empty PDUs send by the nrf52, but I do not get any response from the cc2650.

One difference I've found is, that the nrf52 uses a window offset of 0 when connecting, while other devices use values different from 0.

Is it possible to configure the s132 softdevice to use a window offset, othere than 0? This is just to find the cause of the connection problem, so any quick 'n dirty solution would be fine.

kind regards, Torsten

[FormerMember]

The window offset can be set to a value different than '0' by using the compatibility mode that can be set with sd_ble_opt_set(..). The option for compatibility mode: ble_opt_t --> ble_gap_opt_t --> ble_gap_opt_compat_mode_t

[Torsten Robitzki]

Hi Kristin, thanks a lot. Setting the option results in a Window Offset of 30. Unfortunatelly, the cc2650 still doesn't respond, but I guess that's not the nrf52s fault.

[Torsten Robitzki]

Ups, I have to correct me. That did the trick. Looks like a bug in the cc2650 BLE stack (surprise, surprise).