Tool/software:
Hello,
I’ve successfully integrated the CC33XX Linux driver (v1.0.0.8) into my Yocto (Scarthgap) image. BLE scanning works fine, and I can find nearby devices using bluetoothctl.
However, when I try to connect to a BLE device, the connection succeeds momentarily but then disconnects shortly after with reason 1.
Procedure:
1- cd /usr/share/cc33xx
2- ./ap_start.sh
3- ./ ble_enble.sh
4- hciconfig hci0 up
none of them fails and then using bluetoothctl I scan for available devices then try to connect to one of them.
LOG from bluetoothctl:[bluetooth]# connect D0:2E:AB:96:8B:65
Attempting to connect to D0:2E:AB:96:8B:65
hci0 D0:2E:AB:96:8B:65 type LE Public connected eir_len 15
[CHG] Device D0:2E:AB:96:8B:65 Connected: yes
Connection successful
[CHG] Device D0:2E:AB:96:8B:65 ServicesResolved: yes
[T115i SN:46775741]# info D0:2E:AB:96:8B:65
Device D0:2E:AB:96:8B:65 (public)
Name: T115i SN:46775741
Alias: T115i SN:46775741
Paired: no
Bonded: no
Trusted: no
Blocked: no
Connected: yes
LegacyPairing: no
UUID: Generic Access Profile (00001800-0000-1000-8000-00805f9b34fb)
UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
UUID: Device Information (0000180a-0000-1000-8000-00805f9b34fb)
UUID: Unknown (00005a90-0000-1000-8000-00805f9b34fb)
UUID: Unknown (0000fff0-0000-1000-8000-00805f9b34fb)
Modalias: bluetooth:v02FEp0000d0110
ManufacturerData.Key: 0x02fe (766)
ManufacturerData.Value:
25 03 05 06 %...
hci0 D0:2E:AB:96:8B:65 type LE Public disconnected with reason 1
[CHG] Device D0:2E:AB:96:8B:65 ServicesResolved: no
[CHG] Device D0:2E:AB:96:8B:65 Connected: no
Any idea why the connection fails after short time?
Update:
the btmon-log shows that the remote sends a req. to update connection parameters and it gets rejected by the agent/kernel.
bluetoothd[3840]: < ACL Data TX: Handl.. flags 0x00 dlen 7 #65 [hci0] 7.031683
ATT: Read Request (0x0a) len 2
Handle: 0x0027 Type: PnP ID (0x2a50)
> ACL Data RX: Handle 3584 flags 0x02 dlen 16 #66 [hci0] 7.100355
LE L2CAP: Connection Parameter Update Request (0x12) ident 1 len 8
Min interval: 32
Max interval: 80
Peripheral latency: 0
Timeout multiplier: 400
< ACL Data TX: Handle 3584 flags 0x00 dlen 10 #67 [hci0] 7.100409
LE L2CAP: Connection Parameter Update Response (0x13) ident 1 len 2
Result: Connection Parameters rejected (0x0001)
> HCI Event: Number of Completed Packets (0x13) plen 5 #68 [hci0] 7.167702
Num handles: 1
Handle: 3584 Address: D0:2E:AB:96:8B:65 (Texas Instruments)
Count: 1
#65: len 7 (0 Kb/s)
Latency: 136 msec (50-136 msec ~109 msec)
> ACL Data RX: Handle 3584 flags 0x02 dlen 12 #69 [hci0] 7.211792
ATT: Read Response (0x0b) len 7
> HCI Event: Number of Completed Packets (0x13) plen 5 #70 [hci0] 7.253243
Num handles: 1
Handle: 3584 Address: D0:2E:AB:96:8B:65 (Texas Instruments)
Count: 1
#67: len 10 (0 Kb/s)
Latency: 152 msec (50-152 msec ~131 msec)
> HCI Event: Disconnect Complete (0x05) plen 4 #71 [hci0] 35.423326
Status: Success (0x00)
Handle: 3584 Address: D0:2E:AB:96:8B:65 (Texas Instruments)
Reason: Connection Timeout (0x08)
@ MGMT Event: Device Disconnected (0x000c) plen 8 {0x0001} [hci0] 35.423573
LE Address: D0:2E:AB:96:8B:65 (Texas Instruments)
Reason: Connection timeout (0x01)
@ MGMT Event: Device Disconnected (0x000c) plen 8 {0x0002} [hci0] 35.423573
LE Address: D0:2E:AB:96:8B:65 (Texas Instruments)
Reason: Connection timeout (0x01)
@ MGMT Event: Command Complete (0x0001) plen 10 {0x0002} [hci0] 35.447424
Pair Device (0x0019) plen 7
Status: Timeout (0x08)
LE Address: D0:2E:AB:96:8B:65 (Texas Instruments)