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RE: CC2640R2F: [BLE5][SDK_3.10] Failure To Use GAP Connection Update Request

Samson Chen1
Intellectual 760 points


Hello Marie,

Actually, there is another problem I saw in the SDK 3.10. Maybe that is the problem of iOS, I am not so sure, but I really want you to know it.

It is quite easy to replicate the problem.

- Using ble5stack (this is important)
- Change the slave latency to any non-zero number. (The simple peripheral example uses 0. Change it to non-zero, event 1, can trigger that problem.)
- Do connection update with iPhone 8 or above (Must be a Bluetooth 5 iOS)

The connection update can be made but the result of the connection parameters after the update will be totally wacky values. If you use slave latency 0, everything works fine. Any non-zero value will cause that problem. It does not matter whether the connection parameters comply with the iOS guideline or not. You just simply cannot use a non-zero slave latency with Bluetooth 5 iOS.

(I did not create another thread to discuss this because I am not sure who owns this problem, SDK or iOS?)

Samson