Christopher Collins created MYNEWT-857:
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Summary: BLE Controller - incompatibility with iOS 11
Key: MYNEWT-857
URL: https://issues.apache.org/jira/browse/MYNEWT-857
Project: Mynewt
Issue Type: Task
Security Level: Public (Viewable by anyone)
Components: Nimble
Reporter: Christopher Collins
Fix For: v1.3
Attachments: ios2nimble.pcap
Master: iPhone running iOS 11
Slave: NimBLE device
The iPhone successfully establishes a connection to the NimBLE device, but the
CoreBluetooth {{didConnect()}} callback does not get called. A packet trace
(see attached) shows that the iPhone never initiates service discovery.
The problem seems to occur when the NimBLE controller initiates the Feature
Exchange Procedure immediately after connection establishment. The
{{LL_SLAVE_FEATURE_REQ}} PDU appears to cause a problem for the iOS device.
When I comment out the call to {{ble_ll_ctrl_proc_start()}} at the bottom of
{{ble_ll_conn_created()}}, the iOS device is able to connect and perform
service discovery, resulting in the CoreBluetooth callback being executed.
In the attached pcap file, the CONNECT_REQ is at packet #6211.
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