Hello! I use BlueZ 5.35 and I'd love your help.
Can you help me understand why list-attributes doesn't return anything
and the "GattServices is nil" message?
Here's my bluetoothctl logs:
[bluetooth]# connect F1:6F:DE:EC:F1:D6
Attempting to connect to F1:6F:DE:EC:F1:D6
[CHG] Device F1:6F:DE:EC:F1:D6 Connected: yes
Connection successful
[CHG] Device F1:6F:DE:EC:F1:D6 GattServices is nil
[DFU_Test]# list-attributes
[DFU_Test]# info
Device F1:6F:DE:EC:F1:D6
Name: DFU_Test
Alias: DFU_Test
Appearance: 0x0340
Paired: no
Trusted: no
Blocked: no
Connected: yes
LegacyPairing: no
UUID: Heart Rate (0000180d-0000-1000-8000-00805f9b34fb)
UUID: Device Information (0000180a-0000-1000-8000-00805f9b34fb)
And here are my btmon logs in case it would help:
< HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7 [hci0] 49.518076
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] 49.518952
LE Set Scan Parameters (0x08|0x000b) ncmd 1
Status: Success (0x00)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2 [hci0] 49.518981
Scanning: Enabled (0x01)
Filter duplicates: Enabled (0x01)
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 49.519952
LE Set Scan Enable (0x08|0x000c) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 36 [hci0] 52.188030
LE Advertising Report (0x02)
Num reports: 1
Event type: Connectable undirected - ADV_IND (0x00)
Address type: Random (0x01)
Address: F1:6F:DE:EC:F1:D6 (Static)
Data length: 24
Flags: 0x06
LE General Discoverable Mode
BR/EDR Not Supported
16-bit Service UUIDs (complete): 2 entries
Heart Rate (0x180d)
Device Information (0x180a)
Appearance: Heart Rate Sensor (0x0340)
Name (complete): DFU_Test
RSSI: -31 dBm (0xe1)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2 [hci0] 52.188143
Scanning: Disabled (0x00)
Filter duplicates: Disabled (0x00)
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 52.188957
LE Set Scan Enable (0x08|0x000c) ncmd 1
Status: Success (0x00)
< HCI Command: LE Create Connection (0x08|0x000d) plen 25 [hci0] 52.189058
Scan interval: 60.000 msec (0x0060)
Scan window: 30.000 msec (0x0030)
Filter policy: White list is not used (0x00)
Peer address type: Random (0x01)
Peer address: F1:6F:DE:EC:F1:D6 (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] 52.189955
LE Create Connection (0x08|0x000d) ncmd 1
Status: Success (0x00)
< HCI Command: LE Create Connection Can.. (0x08|0x000e) plen 0 [hci0] 54.195731
> HCI Event: LE Meta Event (0x3e) plen 19 [hci0] 54.195946
LE Connection Complete (0x01)
Status: Success (0x00)
Handle: 32
Role: Master (0x00)
Peer address type: Random (0x01)
Peer address: F1:6F:DE:EC:F1:D6 (Static)
Connection interval: 67.50 msec (0x0036)
Connection latency: 0.00 msec (0x0000)
Supervision timeout: 420 msec (0x002a)
Master clock accuracy: 0x00
@ Device Connected: F1:6F:DE:EC:F1:D6 (2) flags 0x0000
02 01 06 05 03 0d 18 0a 18 03 19 40 03 0a 09 44 ...........@...D
46 55 5f 54 65 73 74 00 FU_Test.
> HCI Event: Command Complete (0x0e) plen 4 [hci0] 54.196928
LE Create Connection Cancel (0x08|0x000e) ncmd 1
Status: Command Disallowed (0x0c)
< HCI Command: LE Read Remote Used Feat.. (0x08|0x0016) plen 2 [hci0] 54.197004
Handle: 32
> HCI Event: Command Status (0x0f) plen 4 [hci0] 54.197929
LE Read Remote Used Features (0x08|0x0016) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 12 [hci0] 54.330960
LE Read Remote Used Features (0x04)
Status: Success (0x00)
Handle: 32
Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
LE Encryption
< ACL Data TX: Handle 32 flags 0x00 dlen 7 [hci0] 54.332123
ATT: Exchange MTU Request (0x02) len 2
Client RX MTU: 517
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 54.397976
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 7 [hci0] 54.465099
ATT: Exchange MTU Response (0x03) len 2
Server RX MTU: 23
< ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 54.465342
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0001-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 54.532926
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 18 [hci0] 54.600225
ATT: Read By Group Type Response (0x11) len 13
Attribute data length: 6
Attribute group list: 2 entries
Handle range: 0x0001-0x0007
UUID: Generic Access Profile (0x1800)
Handle range: 0x0008-0x000b
UUID: Generic Attribute Profile (0x1801)
< ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 54.600402
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x000c-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 54.667973
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 26 [hci0] 54.735207
ATT: Read By Group Type Response (0x11) len 21
Attribute data length: 20
Attribute group list: 1 entry
Handle range: 0x000c-0x0011
UUID: Unknown (00001530-1212-efde-1523-785feabcd123)
< ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 54.735408
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0012-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 54.802940
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 18 [hci0] 54.937705
ATT: Read By Group Type Response (0x11) len 13
Attribute data length: 6
Attribute group list: 2 entries
Handle range: 0x0012-0x0019
UUID: Heart Rate (0x180d)
Handle range: 0x001a-0xffff
UUID: Device Information (0x180a)
< ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 54.937991
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0001-0xffff
Attribute group type: Secondary Service (0x2801)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 55.005936
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 55.072581
ATT: Error Response (0x01) len 4
Read By Group Type Request (0x10)
Handle: 0x0001
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 55.072850
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0008-0x000b
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 55.140972
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 55.207582
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0008
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 55.207940
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000c-0x0011
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 55.275954
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 55.342564
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000c
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 55.342855
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0012-0x0019
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 55.410939
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 55.477547
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0012
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 55.477794
ATT: Read By Type Request (0x08) len 6
Handle range: 0x001a-0xffff
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 55.545967
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 55.612685
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x001a
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 55.612878
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0008-0x000b
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 55.680951
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 13 [hci0] 55.747715
ATT: Read By Type Response (0x09) len 8
Attribute data length: 7
Attribute data list: 1 entry
Handle: 0x0009
Value: 200a00052a
< ACL Data TX: Handle 32 flags 0x00 dlen 11 [hci0] 55.747892
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000a-0x000b
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 55.815954
Num handles: 1
Handle: 32
Count: 1
> ACL Data RX: Handle 32 flags 0x02 dlen 9 [hci0] 55.882715
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000a
Error: Attribute Not Found (0x0a)
--
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
