CC2564C: BLE GATT server and client concurrently

Pierre BOGRAND

Part Number: CC2564C
Other Parts Discussed in Thread: CC256XCQFN-EM

Hi,

I am currently testing the CC2564C Bluetooth controller, using a CC256XCQFN-EM evaluation board, and a Raspberry Pi 2 Model B (Broadcom BCM2836) as Bluetooth host.

The Raspberry Pi 2 embarks a Yocto generated Linux kernel 4.19.93, including BlueZ 5.50 as the Bluetooth stack used. With the hciattach command and the TI init file, initialization of the CC2564C is fine.

Using a custom application or the bluetoothctl tool and BlueZ 5.50, I can successfully use the CC2564C controller as a Bluetooth Low Energy (BLE) GATT client, or as a BLE GATT server.

But, despite the fact that the CC2564C datasheet clearly states that the component is capable, I can't use my system as both GATT server AND client concurrently.

When a connection is made as GATT server or client, I can't make another one as respectively GATT client or server: I get a "Timeout Error" when trying to connect.

As so, I wanted to know if the CC2564C can indeed play concurrently GATT server and client roles in BLE with the BlueZ 5.50 stack ?

Or is it only possible using another stack like Bluetopia ? In which case, would it be a specific restriction from this particular stack, BlueZ 5.50 ?

I would also be grateful for any application case examples available where a CC2564C was used as both server and client using BlueZ.

Thank you in advance for your help !

over 5 years ago

0 Hari Nagalla over 5 years ago

TI__Mastermind 27170 points

CC2564C supports both central and peripheral roles at the same time. However, we have n't tested this feature with Bluez stack. Can , you please provide BTMON/HCIdump logs?

Thanks

0 Pierre BOGRAND over 5 years ago in reply to Hari Nagalla

Prodigy 235 points

Hi Hari,

Thank you for your help.

I first try to connect to a simple BLE device GATT Server (TI SensorTag) as GATT Client, using the BlueZ method "Connect", and I have no problem here.

Here is the connection log:

< HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7                                                                         #1 [hci0] 8.030232
        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                                                                                        #2 [hci0] 8.040016
      LE Set Scan Parameters (0x08|0x000b) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2                                                                             #3 [hci0] 8.040138
        Scanning: Enabled (0x01)
        Filter duplicates: Enabled (0x01)
> HCI Event: Command Complete (0x0e) plen 4                                                                                        #4 [hci0] 8.041067
      LE Set Scan Enable (0x08|0x000c) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 26                                                                                          #5 [hci0] 8.104119
      LE Advertising Report (0x02)
        Num reports: 1
        Event type: Connectable undirected - ADV_IND (0x00)
        Address type: Public (0x00)
        Address: 98:07:2D:40:60:86 (Texas Instruments)
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
        RSSI: -71 dBm (0xb9)
< HCI Command: LE Set Advertise Enable (0x08|0x000a) plen 1                                                                        #6 [hci0] 8.104251
        Advertising: Disabled (0x00)
> HCI Event: Command Complete (0x0e) plen 4                                                                                        #7 [hci0] 8.105082
      LE Set Advertise Enable (0x08|0x000a) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2                                                                             #8 [hci0] 8.105215
        Scanning: Disabled (0x00)
        Filter duplicates: Disabled (0x00)
> HCI Event: Command Complete (0x0e) plen 4                                                                                        #9 [hci0] 8.106246
      LE Set Scan Enable (0x08|0x000c) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Create Connection (0x08|0x000d) plen 25                                                                         #10 [hci0] 8.106519
        Scan interval: 60.000 msec (0x0060)
        Scan window: 60.000 msec (0x0060)
        Filter policy: White list is not used (0x00)
        Peer address type: Public (0x00)
        Peer address: 98:07:2D:40:60:86 (Texas Instruments)
        Own address type: Public (0x00)
        Min connection interval: 30.00 msec (0x0018)
        Max connection interval: 50.00 msec (0x0028)
        Connection latency: 0 (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                                                                                         #11 [hci0] 8.107829
      LE Create Connection (0x08|0x000d) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 19                                                                                         #12 [hci0] 8.209076
      LE Connection Complete (0x01)
        Status: Success (0x00)
        Handle: 1025
        Role: Master (0x00)
        Peer address type: Public (0x00)
        Peer address: 98:07:2D:40:60:86 (Texas Instruments)
        Connection interval: 45.00 msec (0x0024)
        Connection latency: 0 (0x0000)
        Supervision timeout: 420 msec (0x002a)
        Master clock accuracy: 0x01
@ MGMT Event: Device Connected (0x000b) plen 27                                                                              {0x000b} [hci0] 8.209174
        LE Address: 98:07:2D:40:60:86 (Texas Instruments)
        Flags: 0x00000000
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
@ MGMT Event: Device Connected (0x000b) plen 27                                                                              {0x000a} [hci0] 8.209174
        LE Address: 98:07:2D:40:60:86 (Texas Instruments)
        Flags: 0x00000000
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
@ MGMT Event: Device Connected (0x000b) plen 27                                                                              {0x0009} [hci0] 8.209174
        LE Address: 98:07:2D:40:60:86 (Texas Instruments)
        Flags: 0x00000000
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
@ MGMT Event: Device Connected (0x000b) plen 27                                                                              {0x0008} [hci0] 8.209174
        LE Address: 98:07:2D:40:60:86 (Texas Instruments)
        Flags: 0x00000000
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
@ MGMT Event: Device Connected (0x000b) plen 27                                                                              {0x0007} [hci0] 8.209174
        LE Address: 98:07:2D:40:60:86 (Texas Instruments)
        Flags: 0x00000000
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
@ MGMT Event: Device Connected (0x000b) plen 27                                                                              {0x0006} [hci0] 8.209174
        LE Address: 98:07:2D:40:60:86 (Texas Instruments)
        Flags: 0x00000000
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
@ MGMT Event: Device Connected (0x000b) plen 27                                                                              {0x0005} [hci0] 8.209174
        LE Address: 98:07:2D:40:60:86 (Texas Instruments)
        Flags: 0x00000000
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
@ MGMT Event: Device Connected (0x000b) plen 27                                                                              {0x0004} [hci0] 8.209174
        LE Address: 98:07:2D:40:60:86 (Texas Instruments)
        Flags: 0x00000000
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
@ MGMT Event: Device Connected (0x000b) plen 27                                                                              {0x0003} [hci0] 8.209174
        LE Address: 98:07:2D:40:60:86 (Texas Instruments)
        Flags: 0x00000000
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
@ MGMT Event: Device Connected (0x000b) plen 27                                                                              {0x0001} [hci0] 8.209174
        LE Address: 98:07:2D:40:60:86 (Texas Instruments)
        Flags: 0x00000000
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
< HCI Command: LE Read Remote Used Features (0x08|0x0016) plen 2                                                                  #13 [hci0] 8.209886
        Handle: 1025
> HCI Event: Command Status (0x0f) plen 4                                                                                         #14 [hci0] 8.212290
      LE Read Remote Used Features (0x08|0x0016) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 12                                                                                         #15 [hci0] 8.327152
      LE Read Remote Used Features (0x04)
        Status: Success (0x00)
        Handle: 1025
        Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
          LE Encryption
< ACL Data TX: Handle 1025 flags 0x00 dlen 7                                                                                      #16 [hci0] 8.335320
      ATT: Exchange MTU Request (0x02) len 2
        Client RX MTU: 517
> ACL Data RX: Handle 1025 flags 0x02 dlen 7                                                                                      #17 [hci0] 8.416526
      ATT: Exchange MTU Response (0x03) len 2
        Server RX MTU: 23
< ACL Data TX: Handle 1025 flags 0x00 dlen 7                                                                                      #18 [hci0] 8.417038
      ATT: Read Request (0x0a) len 2
        Handle: 0x0003
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                            #19 [hci0] 8.461574
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 21                                                                                     #20 [hci0] 8.506717
      ATT: Read Response (0x0b) len 16
        Value: 4343323635302053656e736f72546167
< ACL Data TX: Handle 1025 flags 0x00 dlen 7                                                                                      #21 [hci0] 8.507154
      ATT: Read Request (0x0a) len 2
        Handle: 0x0005
> ACL Data RX: Handle 1025 flags 0x02 dlen 7                                                                                      #22 [hci0] 8.596547
      ATT: Read Response (0x0b) len 2
        Value: 0000
< ACL Data TX: Handle 1025 flags 0x00 dlen 7                                                                                      #23 [hci0] 8.596950
      ATT: Read Request (0x0a) len 2
        Handle: 0x001b
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                            #24 [hci0] 8.641577
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 12                                                                                     #25 [hci0] 8.686585
      ATT: Read Response (0x0b) len 7
        Value: 010d0000001001
< ACL Data TX: Handle 1025 flags 0x00 dlen 7                                                                                      #26 [hci0] 8.686983
      ATT: Read Request (0x0a) len 2
        Handle: 0x001e
> ACL Data RX: Handle 1025 flags 0x02 dlen 6                                                                                      #27 [hci0] 8.776535
      ATT: Read Response (0x0b) len 1
        Value: 58
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #28 [hci0] 8.776963
      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                                                                            #29 [hci0] 8.821566
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 24                                                                                     #30 [hci0] 8.866768
      ATT: Read By Group Type Response (0x11) len 19
        Attribute data length: 6
        Attribute group list: 3 entries
        Handle range: 0x0001-0x0007
        UUID: Generic Access Profile (0x1800)
        Handle range: 0x0008-0x0008
        UUID: Generic Attribute Profile (0x1801)
        Handle range: 0x0009-0x001b
        UUID: Device Information (0x180a)
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                      #31 [hci0] 8.867126
      ATT: Write Request (0x12) len 4
        Handle: 0x001f
          Data: 0100
> ACL Data RX: Handle 1025 flags 0x02 dlen 5                                                                                      #32 [hci0] 8.956529
      ATT: Write Response (0x13) len 0
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #33 [hci0] 8.956986
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x001c-0xffff
        Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                            #34 [hci0] 9.001574
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 12                                                                                     #35 [hci0] 9.046624
      ATT: Read By Group Type Response (0x11) len 7
        Attribute data length: 6
        Attribute group list: 1 entry
        Handle range: 0x001c-0x0021
        UUID: Battery Service (0x180f)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #36 [hci0] 9.047078
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x0022-0xffff
        Attribute group type: Primary Service (0x2800)
> ACL Data RX: Handle 1025 flags 0x02 dlen 26                                                                                     #37 [hci0] 9.136769
      ATT: Read By Group Type Response (0x11) len 21
        Attribute data length: 20
        Attribute group list: 1 entry
        Handle range: 0x0022-0x0029
        UUID: Vendor specific (f000aa00-0451-4000-b000-000000000000)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #38 [hci0] 9.137181
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x002a-0xffff
        Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                            #39 [hci0] 9.181593
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 26                                                                                     #40 [hci0] 9.226729
      ATT: Read By Group Type Response (0x11) len 21
        Attribute data length: 20
        Attribute group list: 1 entry
        Handle range: 0x002a-0x0031
        UUID: Vendor specific (f000aa20-0451-4000-b000-000000000000)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #41 [hci0] 9.227121
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x0032-0xffff
        Attribute group type: Primary Service (0x2800)
> ACL Data RX: Handle 1025 flags 0x02 dlen 26                                                                                     #42 [hci0] 9.316766
      ATT: Read By Group Type Response (0x11) len 21
        Attribute data length: 20
        Attribute group list: 1 entry
        Handle range: 0x0032-0x0039
        UUID: Vendor specific (f000aa40-0451-4000-b000-000000000000)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #43 [hci0] 9.317130
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x003a-0xffff
        Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                            #44 [hci0] 9.361601
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 26                                                                                     #45 [hci0] 9.406774
      ATT: Read By Group Type Response (0x11) len 21
        Attribute data length: 20
        Attribute group list: 1 entry
        Handle range: 0x003a-0x0041
        UUID: Vendor specific (f000aa80-0451-4000-b000-000000000000)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #46 [hci0] 9.407179
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x0042-0xffff
        Attribute group type: Primary Service (0x2800)
> ACL Data RX: Handle 1025 flags 0x02 dlen 26                                                                                     #47 [hci0] 9.496768
      ATT: Read By Group Type Response (0x11) len 21
        Attribute data length: 20
        Attribute group list: 1 entry
        Handle range: 0x0042-0x0049
        UUID: Vendor specific (f000aa70-0451-4000-b000-000000000000)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #48 [hci0] 9.497139
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x004a-0xffff
        Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                            #49 [hci0] 9.541605
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 12                                                                                     #50 [hci0] 9.586576
      ATT: Read By Group Type Response (0x11) len 7
        Attribute data length: 6
        Attribute group list: 1 entry
        Handle range: 0x004a-0x004e
        UUID: Unknown (0xffe0)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #51 [hci0] 9.586941
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x004f-0xffff
        Attribute group type: Primary Service (0x2800)
> ACL Data RX: Handle 1025 flags 0x02 dlen 26                                                                                     #52 [hci0] 9.676767
      ATT: Read By Group Type Response (0x11) len 21
        Attribute data length: 20
        Attribute group list: 1 entry
        Handle range: 0x004f-0x0053
        UUID: Vendor specific (f000aa64-0451-4000-b000-000000000000)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #53 [hci0] 9.677121
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x0054-0xffff
        Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                            #54 [hci0] 9.721607
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 26                                                                                     #55 [hci0] 9.766770
      ATT: Read By Group Type Response (0x11) len 21
        Attribute data length: 20
        Attribute group list: 1 entry
        Handle range: 0x0054-0x005a
        UUID: Vendor specific (f000ac00-0451-4000-b000-000000000000)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #56 [hci0] 9.767145
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x005b-0xffff
        Attribute group type: Primary Service (0x2800)
> ACL Data RX: Handle 1025 flags 0x02 dlen 26                                                                                     #57 [hci0] 9.856769
      ATT: Read By Group Type Response (0x11) len 21
        Attribute data length: 20
        Attribute group list: 1 entry
        Handle range: 0x005b-0x0062
        UUID: Vendor specific (f000ccc0-0451-4000-b000-000000000000)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                     #58 [hci0] 9.857174
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x0063-0xffff
        Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                            #59 [hci0] 9.901606
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 26                                                                                     #60 [hci0] 9.946749
      ATT: Read By Group Type Response (0x11) len 21
        Attribute data length: 20
        Attribute group list: 1 entry
        Handle range: 0x0063-0xffff
        UUID: Vendor specific (f000ffc0-0451-4000-b000-000000000000)

I then disconnect from this GATT Server and, with a GATT Client (nRF Connect Android Application) I connect to my system, as GATT Server.

Here is the connection log:

> HCI Event: LE Meta Event (0x3e) plen 19                                                                                       #68 [hci0] 119.091973
      LE Connection Complete (0x01)
        Status: Success (0x00)
        Handle: 1025
        Role: Slave (0x01)
        Peer address type: Random (0x01)
        Peer address: 4B:72:0D:6A:DA:AA (Resolvable)
        Connection interval: 48.75 msec (0x0027)
        Connection latency: 0 (0x0000)
        Supervision timeout: 5000 msec (0x01f4)
        Master clock accuracy: 0x05
@ MGMT Event: Device Connected (0x000b) plen 13                                                                            {0x000b} [hci0] 119.092098
        LE Address: 4B:72:0D:6A:DA:AA (Resolvable)
        Flags: 0x00000000
        Data length: 0
@ MGMT Event: Device Connected (0x000b) plen 13                                                                            {0x000a} [hci0] 119.092098
        LE Address: 4B:72:0D:6A:DA:AA (Resolvable)
        Flags: 0x00000000
        Data length: 0
@ MGMT Event: Device Connected (0x000b) plen 13                                                                            {0x0009} [hci0] 119.092098
        LE Address: 4B:72:0D:6A:DA:AA (Resolvable)
        Flags: 0x00000000
        Data length: 0
@ MGMT Event: Device Connected (0x000b) plen 13                                                                            {0x0008} [hci0] 119.092098
        LE Address: 4B:72:0D:6A:DA:AA (Resolvable)
        Flags: 0x00000000
        Data length: 0
@ MGMT Event: Device Connected (0x000b) plen 13                                                                            {0x0007} [hci0] 119.092098
        LE Address: 4B:72:0D:6A:DA:AA (Resolvable)
        Flags: 0x00000000
        Data length: 0
@ MGMT Event: Device Connected (0x000b) plen 13                                                                            {0x0006} [hci0] 119.092098
        LE Address: 4B:72:0D:6A:DA:AA (Resolvable)
        Flags: 0x00000000
        Data length: 0
@ MGMT Event: Device Connected (0x000b) plen 13                                                                            {0x0005} [hci0] 119.092098
        LE Address: 4B:72:0D:6A:DA:AA (Resolvable)
        Flags: 0x00000000
        Data length: 0
@ MGMT Event: Device Connected (0x000b) plen 13                                                                            {0x0004} [hci0] 119.092098
        LE Address: 4B:72:0D:6A:DA:AA (Resolvable)
        Flags: 0x00000000
        Data length: 0
@ MGMT Event: Device Connected (0x000b) plen 13                                                                            {0x0003} [hci0] 119.092098
        LE Address: 4B:72:0D:6A:DA:AA (Resolvable)
        Flags: 0x00000000
        Data length: 0
@ MGMT Event: Device Connected (0x000b) plen 13                                                                            {0x0001} [hci0] 119.092098
        LE Address: 4B:72:0D:6A:DA:AA (Resolvable)
        Flags: 0x00000000
        Data length: 0
< HCI Command: LE Read Remote Used Features (0x08|0x0016) plen 2                                                                #69 [hci0] 119.092819
        Handle: 1025
> HCI Event: Command Status (0x0f) plen 4                                                                                       #70 [hci0] 119.093444
      LE Read Remote Used Features (0x08|0x0016) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 12                                                                                       #71 [hci0] 119.227963
      LE Read Remote Used Features (0x04)
        Status: Success (0x00)
        Handle: 1025
        Features: 0xdf 0x00 0x00 0x00 0x00 0x00 0x00 0x00
          LE Encryption
          Connection Parameter Request Procedure
          Extended Reject Indication
          Slave-initiated Features Exchange
          LE Ping
          LL Privacy
          Extended Scanner Filter Policies
= bluetoothd: No cache for 4B:72:0D:6A:DA:AA                                                                                               119.235823
< ACL Data TX: Handle 1025 flags 0x00 dlen 7                                                                                    #72 [hci0] 119.235888
      ATT: Exchange MTU Request (0x02) len 2
        Client RX MTU: 517
> ACL Data RX: Handle 1025 flags 0x02 dlen 7                                                                                    #73 [hci0] 119.372579
      ATT: Exchange MTU Response (0x03) len 2
        Server RX MTU: 517
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                   #74 [hci0] 119.373131
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x0001-0xffff
        Attribute group type: Primary Service (0x2800)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                   #75 [hci0] 119.373460
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x0001-0xffff
        Attribute group type: Primary Service (0x2800)
< ACL Data TX: Handle 1025 flags 0x00 dlen 27                                                                                   #76 [hci0] 119.374749
< ACL Data TX: Handle 1025 flags 0x01 dlen 3                                                                                    #77 [hci0] 119.374847
      ATT: Read By Group Type Response (0x11) len 25
        Attribute data length: 6
        Attribute group list: 4 entries
        Handle range: 0x0001-0x0005
        UUID: Generic Access Profile (0x1800)
        Handle range: 0x0006-0x0009
        UUID: Generic Attribute Profile (0x1801)
        Handle range: 0x0032-0x0035
        UUID: Heart Rate (0x180d)
        Handle range: 0x0036-0x0039
        UUID: Unknown (0xffff)
> HCI Event: LE Meta Event (0x3e) plen 11                                                                                       #78 [hci0] 119.422987
      LE Remote Connection Parameter Request (0x06)
        Handle: 1025
        Min connection interval: 7.50 msec (0x0006)
        Max connection interval: 7.50 msec (0x0006)
        Connection latency: 0 (0x0000)
        Supervision timeout: 5000 msec (0x01f4)
< HCI Command: LE Remote Connection Parameter Request Reply (0x08|0x0020) plen 14                                               #79 [hci0] 119.423115
        Handle: 1025
        Min connection interval: 7.50 msec (0x0006)
        Max connection interval: 7.50 msec (0x0006)
        Connection latency: 0 (0x0000)
        Supervision timeout: 5000 msec (0x01f4)
        Min connection length: 0.000 msec (0x0000)
        Max connection length: 0.000 msec (0x0000)
> HCI Event: Command Complete (0x0e) plen 6                                                                                     #80 [hci0] 119.423726
      LE Remote Connection Parameter Request Reply (0x08|0x0020) ncmd 1
        Status: Success (0x00)
        Handle: 1025
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                          #81 [hci0] 119.469993
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 24                                                                                   #82 [hci0] 119.470640
      ATT: Read By Group Type Response (0x11) len 19
        Attribute data length: 6
        Attribute group list: 3 entries
        Handle range: 0x0001-0x0003
        UUID: Generic Attribute Profile (0x1801)
        Handle range: 0x0014-0x001a
        UUID: Generic Access Profile (0x1800)
        Handle range: 0x0028-0x002f
        UUID: Heart Rate (0x180d)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                   #83 [hci0] 119.471204
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x0030-0xffff
        Attribute group type: Primary Service (0x2800)
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                   #84 [hci0] 119.518892
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x003a-0xffff
        Attribute group type: Primary Service (0x2800)
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                    #85 [hci0] 119.519305
      ATT: Error Response (0x01) len 4
        Read By Group Type Request (0x10)
        Handle: 0x003a
        Error: Attribute Not Found (0x0a)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                          #86 [hci0] 119.567675
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 26                                                                                   #87 [hci0] 119.665303
      ATT: Read By Group Type Response (0x11) len 21
        Attribute data length: 20
        Attribute group list: 1 entry
        Handle range: 0x0030-0x0039
        UUID: Vendor specific (0000aaa0-0000-1000-8000-aabbccddeeff)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                   #88 [hci0] 119.665713
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x003a-0xffff
        Attribute group type: Primary Service (0x2800)
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                   #89 [hci0] 119.666100
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0001-0x0005
        Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                          #90 [hci0] 119.666209
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                    #91 [hci0] 119.666546
      ATT: Error Response (0x01) len 4
        Read By Type Request (0x08)
        Handle: 0x0001
        Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 1025 flags 0x02 dlen 12                                                                                   #92 [hci0] 119.762626
      ATT: Read By Group Type Response (0x11) len 7
        Attribute data length: 6
        Attribute group list: 1 entry
        Handle range: 0x003a-0xffff
        UUID: User Data (0x181c)
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                   #93 [hci0] 119.763147
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0001-0x0005
        Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                          #94 [hci0] 119.763579
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 20                                                                                   #95 [hci0] 119.763777
      ATT: Read By Type Response (0x09) len 15
        Attribute data length: 7
        Attribute data list: 2 entries
        Handle: 0x0002
        Value: 020300002a
        Handle: 0x0004
        Value: 020500012a
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                   #96 [hci0] 119.763875
      ATT: Read By Group Type Request (0x10) len 6
        Handle range: 0x0001-0xffff
        Attribute group type: Secondary Service (0x2801)
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                   #97 [hci0] 119.860188
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0005-0x0005
        Attribute type: Characteristic (0x2803)
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                    #98 [hci0] 119.860623
      ATT: Error Response (0x01) len 4
        Read By Type Request (0x08)
        Handle: 0x0005
        Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 1025 flags 0x02 dlen 9                                                                                    #99 [hci0] 119.860874
      ATT: Error Response (0x01) len 4
        Read By Group Type Request (0x10)
        Handle: 0x0001
        Error: Unsupported Group Type (0x10)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                  #100 [hci0] 119.861396
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0001-0xffff
        Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #101 [hci0] 119.861448
        Num handles: 1
        Handle: 1025
        Count: 2
> HCI Event: LE Meta Event (0x3e) plen 10                                                                                      #102 [hci0] 119.914198
      LE Connection Update Complete (0x03)
        Status: Success (0x00)
        Handle: 1025
        Connection interval: 7.50 msec (0x0006)
        Connection latency: 0 (0x0000)
        Supervision timeout: 5000 msec (0x01f4)
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                  #103 [hci0] 119.919699
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0006-0x0009
        Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #104 [hci0] 119.919830
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 9                                                                                   #105 [hci0] 119.920254
      ATT: Error Response (0x01) len 4
        Read By Type Request (0x08)
        Handle: 0x0001
        Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #106 [hci0] 119.920513
      ATT: Error Response (0x01) len 4
        Read By Type Request (0x08)
        Handle: 0x0006
        Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                  #107 [hci0] 119.920943
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0001-0xffff
        Attribute type: Characteristic (0x2803)
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                  #108 [hci0] 119.934678
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0006-0x0009
        Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #109 [hci0] 119.934799
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 13                                                                                  #110 [hci0] 119.935213
      ATT: Read By Type Response (0x09) len 8
        Attribute data length: 7
        Attribute data list: 1 entry
        Handle: 0x0007
        Value: 200800052a
> ACL Data RX: Handle 1025 flags 0x02 dlen 27                                                                                  #111 [hci0] 119.935497
> ACL Data RX: Handle 1025 flags 0x01 dlen 27                                                                                  #112 [hci0] 119.936087
> ACL Data RX: Handle 1025 flags 0x01 dlen 1                                                                                   #113 [hci0] 119.936828
      ATT: Read By Type Response (0x09) len 50
        Attribute data length: 7
        Attribute data list: 7 entries
        Handle: 0x0002
        Value: 200300052a
        Handle: 0x0015
        Value: 021600002a
        Handle: 0x0017
        Value: 021800012a
        Handle: 0x0019
        Value: 021a00a62a
        Handle: 0x0029
        Value: 102a00372a
        Handle: 0x002c
        Value: 022d00382a
        Handle: 0x002e
        Value: 082f00392a
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                  #114 [hci0] 119.937209
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x002f-0xffff
        Attribute type: Characteristic (0x2803)
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                  #115 [hci0] 119.942156
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0008-0x0009
        Attribute type: Characteristic (0x2803)
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #116 [hci0] 119.942563
      ATT: Error Response (0x01) len 4
        Read By Type Request (0x08)
        Handle: 0x0008
        Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 1025 flags 0x02 dlen 27                                                                                  #117 [hci0] 119.949888
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #118 [hci0] 119.949899
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x01 dlen 21                                                                                  #119 [hci0] 119.950669
      ATT: Read By Type Response (0x09) len 43
        Attribute data length: 21
        Attribute data list: 2 entries
        Handle: 0x0031
        Value: 123200ffeeddccbbaa008000100000a1aa0000
        Handle: 0x0037
        Value: 2c3800ffeeddccbbaa008000100000a2aa0000
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                  #120 [hci0] 119.951556
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0038-0xffff
        Attribute type: Characteristic (0x2803)
> ACL Data RX: Handle 1025 flags 0x02 dlen 9                                                                                   #121 [hci0] 119.957131
      ATT: Find Information Request (0x04) len 4
        Handle range: 0x0009-0x0009
< ACL Data TX: Handle 1025 flags 0x00 dlen 10                                                                                  #122 [hci0] 119.957531
      ATT: Find Information Response (0x05) len 5
        Format: UUID-16 (0x01)
        Handle: 0x0009
        UUID: Client Characteristic Configuration (0x2902)
> ACL Data RX: Handle 1025 flags 0x02 dlen 27                                                                                  #123 [hci0] 119.964907
      ATT: Read By Type Response (0x09) len 22
        Attribute data length: 7
        Attribute data list: 3 entries
        Handle: 0x003b
        Value: 0a3c008a2a
        Handle: 0x003d
        Value: 0a3e00902a
        Handle: 0x003f
        Value: 0a40008c2a
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #124 [hci0] 119.964918
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 11                                                                                  #125 [hci0] 119.965423
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0040-0xffff
        Attribute type: Characteristic (0x2803)
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                  #126 [hci0] 119.972204
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0032-0x0035
        Attribute type: Include (0x2802)
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #127 [hci0] 119.972628
      ATT: Error Response (0x01) len 4
        Read By Type Request (0x08)
        Handle: 0x0032
        Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 1025 flags 0x02 dlen 9                                                                                   #128 [hci0] 119.979654
      ATT: Error Response (0x01) len 4
        Read By Type Request (0x08)
        Handle: 0x0040
        Error: Attribute Not Found (0x0a)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #129 [hci0] 119.979790
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #130 [hci0] 119.980516
      ATT: Find Information Request (0x04) len 4
        Handle range: 0x002b-0x002b
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                  #131 [hci0] 119.987199
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0032-0x0035
        Attribute type: Characteristic (0x2803)
< ACL Data TX: Handle 1025 flags 0x00 dlen 13                                                                                  #132 [hci0] 119.987681
      ATT: Read By Type Response (0x09) len 8
        Attribute data length: 7
        Attribute data list: 1 entry
        Handle: 0x0033
        Value: 023400372a
> ACL Data RX: Handle 1025 flags 0x02 dlen 10                                                                                  #133 [hci0] 119.994659
      ATT: Find Information Response (0x05) len 5
        Format: UUID-16 (0x01)
        Handle: 0x002b
        UUID: Client Characteristic Configuration (0x2902)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #134 [hci0] 119.994807
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #135 [hci0] 119.995157
      ATT: Find Information Request (0x04) len 4
        Handle range: 0x0033-0x0036
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                  #136 [hci0] 120.009708
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0034-0x0035
        Attribute type: Characteristic (0x2803)
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #137 [hci0] 120.010118
      ATT: Error Response (0x01) len 4
        Read By Type Request (0x08)
        Handle: 0x0034
        Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 1025 flags 0x02 dlen 10                                                                                  #138 [hci0] 120.017162
      ATT: Find Information Response (0x05) len 5
        Format: UUID-16 (0x01)
        Handle: 0x0033
        UUID: Client Characteristic Configuration (0x2902)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #139 [hci0] 120.017299
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #140 [hci0] 120.017748
      ATT: Find Information Request (0x04) len 4
        Handle range: 0x0034-0x0036
> ACL Data RX: Handle 1025 flags 0x02 dlen 9                                                                                   #141 [hci0] 120.024679
      ATT: Find Information Request (0x04) len 4
        Handle range: 0x0035-0x0035
< ACL Data TX: Handle 1025 flags 0x00 dlen 24                                                                                  #142 [hci0] 120.025122
      ATT: Find Information Response (0x05) len 19
        Format: UUID-128 (0x02)
        Handle: 0x0035
        UUID: Vendor specific (8260c653-1a54-426b-9e36-e84c238bc669)
> ACL Data RX: Handle 1025 flags 0x02 dlen 24                                                                                  #143 [hci0] 120.032318
      ATT: Find Information Response (0x05) len 19
        Format: UUID-128 (0x02)
        Handle: 0x0034
        UUID: Vendor specific (0000aab0-0000-1000-8000-aabbccddeeff)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #144 [hci0] 120.032409
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #145 [hci0] 120.032747
      ATT: Find Information Request (0x04) len 4
        Handle range: 0x0035-0x0036
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                  #146 [hci0] 120.047194
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0036-0x0039
        Attribute type: Include (0x2802)
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #147 [hci0] 120.047619
      ATT: Error Response (0x01) len 4
        Read By Type Request (0x08)
        Handle: 0x0036
        Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 1025 flags 0x02 dlen 10                                                                                  #148 [hci0] 120.062160
      ATT: Find Information Response (0x05) len 5
        Format: UUID-16 (0x01)
        Handle: 0x0035
        UUID: Characteristic User Description (0x2901)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #149 [hci0] 120.062306
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #150 [hci0] 120.062704
      ATT: Find Information Request (0x04) len 4
        Handle range: 0x0036-0x0036
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                  #151 [hci0] 120.077169
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0036-0x0039
        Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #152 [hci0] 120.077296
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 13                                                                                  #153 [hci0] 120.077641
      ATT: Read By Type Response (0x09) len 8
        Attribute data length: 7
        Attribute data list: 1 entry
        Handle: 0x0037
        Value: 0a38000a00
> ACL Data RX: Handle 1025 flags 0x02 dlen 10                                                                                  #154 [hci0] 120.084628
      ATT: Find Information Response (0x05) len 5
        Format: UUID-16 (0x01)
        Handle: 0x0036
        UUID: Characteristic Format (0x2904)
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #155 [hci0] 120.085181
      ATT: Find Information Request (0x04) len 4
        Handle range: 0x0039-0x0039
> ACL Data RX: Handle 1025 flags 0x02 dlen 11                                                                                  #156 [hci0] 120.092183
      ATT: Read By Type Request (0x08) len 6
        Handle range: 0x0038-0x0039
        Attribute type: Characteristic (0x2803)
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #157 [hci0] 120.092562
      ATT: Error Response (0x01) len 4
        Read By Type Request (0x08)
        Handle: 0x0038
        Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 1025 flags 0x02 dlen 10                                                                                  #158 [hci0] 120.099653
      ATT: Find Information Response (0x05) len 5
        Format: UUID-16 (0x01)
        Handle: 0x0039
        UUID: Client Characteristic Configuration (0x2902)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #159 [hci0] 120.099802
        Num handles: 1
        Handle: 1025
        Count: 2
< ACL Data TX: Handle 1025 flags 0x00 dlen 9                                                                                   #160 [hci0] 120.100251
      ATT: Find Information Request (0x04) len 4
        Handle range: 0x0041-0xffff
> ACL Data RX: Handle 1025 flags 0x02 dlen 9                                                                                   #161 [hci0] 120.107167
      ATT: Find Information Request (0x04) len 4
        Handle range: 0x0039-0x0039
< ACL Data TX: Handle 1025 flags 0x00 dlen 24                                                                                  #162 [hci0] 120.107643
      ATT: Find Information Response (0x05) len 19
        Format: UUID-128 (0x02)
        Handle: 0x0039
        UUID: Vendor specific (8260c653-1a54-426b-9e36-e84c238bc669)
> ACL Data RX: Handle 1025 flags 0x02 dlen 9                                                                                   #163 [hci0] 120.114650
      ATT: Error Response (0x01) len 4
        Find Information Request (0x04)
        Handle: 0x0041
        Error: Attribute Not Found (0x0a)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #164 [hci0] 120.114780
        Num handles: 1
        Handle: 1025
        Count: 2
> HCI Event: LE Meta Event (0x3e) plen 11                                                                                      #165 [hci0] 120.123758
      LE Remote Connection Parameter Request (0x06)
        Handle: 1025
        Min connection interval: 48.75 msec (0x0027)
        Max connection interval: 48.75 msec (0x0027)
        Connection latency: 0 (0x0000)
        Supervision timeout: 5000 msec (0x01f4)
< HCI Command: LE Remote Connection Parameter Request Reply (0x08|0x0020) plen 14                                              #166 [hci0] 120.123915
        Handle: 1025
        Min connection interval: 48.75 msec (0x0027)
        Max connection interval: 48.75 msec (0x0027)
        Connection latency: 0 (0x0000)
        Supervision timeout: 5000 msec (0x01f4)
        Min connection length: 0.000 msec (0x0000)
        Max connection length: 0.000 msec (0x0000)
> HCI Event: Command Complete (0x0e) plen 6                                                                                    #167 [hci0] 120.124695
      LE Remote Connection Parameter Request Reply (0x08|0x0020) ncmd 1
        Status: Success (0x00)
        Handle: 1025
< ACL Data TX: Handle 1025 flags 0x00 dlen 7                                                                                   #168 [hci0] 120.128587
      ATT: Read Request (0x0a) len 2
        Handle: 0x0016
> ACL Data RX: Handle 1025 flags 0x02 dlen 13                                                                                  #169 [hci0] 120.144785
      ATT: Read Response (0x0b) len 8
        Value: 51434f4d2d425444
< ACL Data TX: Handle 1025 flags 0x00 dlen 7                                                                                   #170 [hci0] 120.145431
      ATT: Read Request (0x0a) len 2
        Handle: 0x0018
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #171 [hci0] 120.152220
        Num handles: 1
        Handle: 1025
        Count: 2
> ACL Data RX: Handle 1025 flags 0x02 dlen 7                                                                                   #172 [hci0] 120.159660
      ATT: Read Response (0x0b) len 2
        Value: 0000
> HCI Event: LE Meta Event (0x3e) plen 10                                                                                      #173 [hci0] 120.251696
      LE Connection Update Complete (0x03)
        Status: Success (0x00)
        Handle: 1025
        Connection interval: 48.75 msec (0x0027)
        Connection latency: 0 (0x0000)
        Supervision timeout: 5000 msec (0x01f4)
> HCI Event: Number of Completed Packets (0x13) plen 5                                                                         #174 [hci0] 120.259591
        Num handles: 1
        Handle: 1025
        Count: 1

Then, while still being connected to this GATT Client as GATT Server, I try again to connect to the GATT Server TI SensorTag, so as GATT Client, in order to try both roles concurrently. This connection, still made with the BlueZ "Connect" method, does not work and returns a Connection Timeout.

Here is the log when trying to connect:

< HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7                                                                         #1 [hci0] 4.404283
        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                                                                                        #2 [hci0] 4.414354
      LE Set Scan Parameters (0x08|0x000b) ncmd 1
        Status: Success (0x00)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2                                                                             #3 [hci0] 4.414467
        Scanning: Enabled (0x01)
        Filter duplicates: Enabled (0x01)
> HCI Event: Command Complete (0x0e) plen 4                                                                                        #4 [hci0] 4.415270
      LE Set Scan Enable (0x08|0x000c) ncmd 1
        Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 26                                                                                          #5 [hci0] 4.442659
      LE Advertising Report (0x02)
        Num reports: 1
        Event type: Connectable undirected - ADV_IND (0x00)
        Address type: Public (0x00)
        Address: 98:07:2D:40:60:86 (Texas Instruments)
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
        RSSI: -65 dBm (0xbf)
> HCI Event: LE Meta Event (0x3e) plen 26                                                                                         #6 [hci0] 26.148998
      LE Advertising Report (0x02)
        Num reports: 1
        Event type: Connectable undirected - ADV_IND (0x00)
        Address type: Public (0x00)
        Address: 98:07:2D:40:60:86 (Texas Instruments)
        Data length: 14
        Flags: 0x05
          LE Limited Discoverable Mode
          BR/EDR Not Supported
        16-bit Service UUIDs (partial): 1 entry
          Unknown (0xaa80)
        Company: Texas Instruments Inc. (13)
          Data: 030000
        RSSI: -70 dBm (0xba)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2                                                                            #7 [hci0] 45.070949
        Scanning: Disabled (0x00)
        Filter duplicates: Disabled (0x00)
> HCI Event: Command Complete (0x0e) plen 4                                                                                       #8 [hci0] 45.080393
      LE Set Scan Enable (0x08|0x000c) ncmd 1
        Status: Success (0x00)

It appears that in this case, the HCI Command: LE Create Connection is never sent, hence the timeout, but I have no errors being returned that would explain why it's missing.

0 Hari Nagalla over 5 years ago in reply to Pierre BOGRAND

TI__Mastermind 27170 points

It seems like a limitation from Bluez side? I do not know, why it is not issuing "LE create connection" command. Did, you try with BT dongle connected to a Linux/Ubutu machine?

Thanks

0 Pierre BOGRAND over 5 years ago in reply to Hari Nagalla

Prodigy 235 points

Hi Hari,

It might be a BlueZ side issue yes, or maybe I'm doing something wrong with the BlueZ/D-Bus API.

I tried to connect to my system from a Ubuntu 16.04 PC with a BT dongle, while my system was already connected itself to a sensor, gathering data from it periodically. It does accept the connection, but I am then not enable to list the available attributes, and so to access them. Even if the connection was initiated by the PC, I can't be sure that the PC is indeed playing the role of GATT client.

0 Hari Nagalla over 5 years ago in reply to Pierre BOGRAND

TI__Mastermind 27170 points

Hi Pierre,

Since, it does not seem like a controller issue, can we close the ticket? You, may raise a new ticket if you find issues with the controller.

Thanks

0 Pierre BOGRAND over 5 years ago in reply to Hari Nagalla

Prodigy 235 points

Hi Hari,

Sure, thank you.

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CC2564C: BLE GATT server and client concurrently