Hello, I have a Raspberry Pi 3 running the latest Raspbian, and I have upgraded bluez from 5.23. to 5.43. I am attempting to connect to BLE devices that advertise at 2 second interval. I wrote some code based on gatttool and attempted to connect to these devices. I run into the le connect request being cancelled after 2 seconds. From my research I ran across this from about 15 months ago in the archives, https://www.spinics.net/lists/linux-bluetooth/msg65434.html However after following the threads, I did not see if a resolution was found. I have ran tests with my code, the gatttool utility and well as using bluetoothctl. I see the same type of activity in btmon that is listed below: < HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7 [hci0] 21:45:51.917070 Type: Passive (0x00) Interval: 60.000 msec (0x0060) Window: 30.000 msec (0x0030) Own address type: Public (0x00) Filter policy: Ignore not in white list (0x01) > HCI Event: Command Complete (0x0e) plen 4 [hci0] 21:45:51.917819 LE Set Scan Parameters (0x08|0x000b) ncmd 1 Status: Success (0x00) < HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2 [hci0] 21:45:51.917876 Scanning: Enabled (0x01) Filter duplicates: Enabled (0x01) > HCI Event: Command Complete (0x0e) plen 4 [hci0] 21:45:51.918357 LE Set Scan Enable (0x08|0x000c) ncmd 1 Status: Success (0x00) > HCI Event: LE Meta Event (0x3e) plen 27 [hci0] 21:45:52.597503 LE Advertising Report (0x02) Num reports: 1 Event type: Connectable undirected - ADV_IND (0x00) Address type: Random (0x01) Address: D3:67:2D:D1:46:46 (Static) Data length: 15 Flags: 0x06 LE General Discoverable Mode BR/EDR Not Supported Company: FedEx Services (321) Data: 070a111080d28004 RSSI: -63 dBm (0xc1) < HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2 [hci0] 21:45:52.597611 Scanning: Disabled (0x00) Filter duplicates: Disabled (0x00) > HCI Event: Command Complete (0x0e) plen 4 [hci0] 21:45:52.599626 LE Set Scan Enable (0x08|0x000c) ncmd 1 Status: Success (0x00) < HCI Command: LE Create Connection (0x08|0x000d) plen 25 [hci0] 21:45:52.599701 Scan interval: 60.000 msec (0x0060) Scan window: 60.000 msec (0x0060) Filter policy: White list is not used (0x00) Peer address type: Random (0x01) Peer address: D3:67:2D:D1:46:46 (Static) Own address type: Public (0x00) Min connection interval: 50.00 msec (0x0028) Max connection interval: 70.00 msec (0x0038) Connection latency: 0x0000 Supervision timeout: 420 msec (0x002a) Min connection length: 0.000 msec (0x0000) Max connection length: 0.000 msec (0x0000) > HCI Event: Command Status (0x0f) plen 4 [hci0] 21:45:52.600508 LE Create Connection (0x08|0x000d) ncmd 1 Status: Success (0x00) < HCI Command: LE Create Connection Cancel (0x08|0x000e) plen 0 [hci0] 21:45:54.597597 > HCI Event: Command Complete (0x0e) plen 4 [hci0] 21:45:54.684146 LE Create Connection Cancel (0x08|0x000e) ncmd 1 Status: Success (0x00) > HCI Event: LE Meta Event (0x3e) plen 19 [hci0] 21:45:54.684361 LE Connection Complete (0x01) Status: Unknown Connection Identifier (0x02) Handle: 64 Role: Master (0x00) Peer address type: Random (0x01) Peer address: D3:67:2D:D1:46:46 (Static) Connection interval: 67.50 msec (0x0036) Connection latency: 0.00 msec (0x0000) Supervision timeout: 420 msec (0x002a) Master clock accuracy: 0x00 @ Connect Failed: D3:67:2D:D1:46:46 (2) status 0x02 Has there been a resolution to this? Is there a way to change the connect timeout? One thing to note is if I use hcitool to connect, I am able to connect most all of the time. I know this is not the L2CAP layer, but I can see that I am able to connect. Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
