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Discovering a VS UUID Characterisic, but it shows UUID as 0

Dresse

Hi,

I am running SDK15, and using the example ble_app_interactive in ble_central and peripheral. I am trying to discover services and characteristic from a peripheral device, using NRF52 DK as a central device. There is a lot of services and VS services and characteristic in the peripheral. I can discover the services, and see the VS UUID services. As seen on picture:

But when i try to discover the characteristics in the VS services, it writes out the UUID as 0. I have also made it print out it handles and it does have it's handles Both things is shown in pictures below.

The UUID is 0. This is by using gatt characteristics <address> 2EAF.

If i then try to write gatt characteristics <address> AE62. I still don't get UUID, but my progam also crashes and gives me error code 11, but this is in the CCCD descriptor, as seen on picture:

I have made extra logging. I have also increased NRF_SDH_BLE_VS_UUID_COUNT in sdk_config. I have also increased my maximum characterstics and services. Hope you can help.

Regards Andreas 

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  • 0

    Hi Dresse, 

    Please post a full log of your test, including the commands you type in. I don't see the part where you find the VS services I would suggest you also test first with connecting to ble_app_uart, just to test if it would work with a simple custom profile. 

  • 0 in reply to Hung Bui

    Alright, I now have the full log. I have added some extra text to the program, so I know where it is, hope you can see past that. The first log file, show the communation between the hearingaid, and the Nordic.

     

    Fullscreen 20181120_111630putty.log Download 
    =~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2018.11.20 11:16:30 =~=~=~=~=~=~=~=~=~=~=~=

  advertiseballocbonded_devicesclear
  clear_devicescliconnectconnected_devices
  device_namedevicesdisconnectgatt
  historykey_replylogmpu
  numericpairparametersprivacy
  queueremove_bondresizescan
uart_cli:~$ conn    scvan on      an onScan started
uart_cli:~$ <info> app: Scanning
uart_cli:~$ devicesDevice 00:16:94:1B:29:7A PXC 550
Device 70:21:3B:A6:4F:D4 32:c8:53:30:31:30
uart_cli:~$ devicesDevice 00:16:94:1B:29:7A PXC 550
Device 70:21:3B:A6:4F:D4 32:c8:53:30:31:30
Device E2:4E:06:F7:E3:BC tkr
Device 7D:20:E7:E5:49:8D 24:31:41:5a:1a:14
Device 00:16:94:28:DF:13 MB 660 MS
uart_cli:~$ devicesDevice 00:16:94:1B:29:7A PXC 550
Device 70:21:3B:A6:4F:D4 32:c8:53:30:31:30
Device E2:4E:06:F7:E3:BC tkr
Device 7D:20:E7:E5:49:8D 24:31:41:5a:1a:14
Device 00:16:94:28:DF:13 MB 660 MS
Device 08:DF:1F:DB:08:A2 LE-B35C
Device 00:16:94:28:4F:D3 MB 660 MS
Device 6A:99:24:40:D5:B1 DUT-SLAVE
Device 58:0E:A3:72:C2:D5 DUT-SLAVE
Device 47:2E:8C:88:AC:44 [LG] webOS TV UJ630V
Device A0:6F:AA:46:31:D1 612MANJ6A687 UW341C
Device C8:0A:9C:09:3E:38 Tile
Device F0:DF:FB:66:20:1F Tile
uart_cli:~$ devicesDevice 00:16:94:1B:29:7A PXC 550
Device 70:21:3B:A6:4F:D4 32:c8:53:30:31:30
Device E2:4E:06:F7:E3:BC tkr
Device 7D:20:E7:E5:49:8D 24:31:41:5a:1a:14
Device 00:16:94:28:DF:13 MB 660 MS
Device 08:DF:1F:DB:08:A2 LE-B35C
Device 00:16:94:28:4F:D3 MB 660 MS
Device 6A:99:24:40:D5:B1 DUT-SLAVE
Device 58:0E:A3:72:C2:D5 DUT-SLAVE
Device 47:2E:8C:88:AC:44 [LG] webOS TV UJ630V
Device A0:6F:AA:46:31:D1 612MANJ6A687 UW341C
Device C8:0A:9C:09:3E:38 Tile
Device F0:DF:FB:66:20:1F Tile
uart_cli:~$ devicesDevice 00:16:94:1B:29:7A PXC 550
Device 70:21:3B:A6:4F:D4 32:c8:53:30:31:30
Device E2:4E:06:F7:E3:BC tkr
Device 7D:20:E7:E5:49:8D 24:31:41:5a:1a:14
Device 00:16:94:28:DF:13 MB 660 MS
Device 08:DF:1F:DB:08:A2 LE-B35C
Device 00:16:94:28:4F:D3 MB 660 MS
Device 6A:99:24:40:D5:B1 DUT-SLAVE
Device 58:0E:A3:72:C2:D5 DUT-SLAVE
Device 47:2E:8C:88:AC:44 [LG] webOS TV UJ630V
Device A0:6F:AA:46:31:D1 612MANJ6A687 UW341C
Device C8:0A:9C:09:3E:38 Tile
Device F0:DF:FB:66:20:1F Tile
uart_cli:~$ devicesDevice 00:16:94:1B:29:7A PXC 550
Device 70:21:3B:A6:4F:D4 32:c8:53:30:31:30
Device E2:4E:06:F7:E3:BC tkr
Device 7D:20:E7:E5:49:8D 24:31:41:5a:1a:14
Device 00:16:94:28:DF:13 MB 660 MS
Device 08:DF:1F:DB:08:A2 LE-B35C
Device 00:16:94:28:4F:D3 MB 660 MS
Device 6A:99:24:40:D5:B1 DUT-SLAVE
Device 58:0E:A3:72:C2:D5 DUT-SLAVE
Device 47:2E:8C:88:AC:44 [LG] webOS TV UJ630V
Device A0:6F:AA:46:31:D1 612MANJ6A687 UW341C
Device C8:0A:9C:09:3E:38 Tile
Device F0:DF:FB:66:20:1F Tile
uart_cli:~$ devicesDevice 00:16:94:1B:29:7A PXC 550
Device 70:21:3B:A6:4F:D4 32:c8:53:30:31:30
Device E2:4E:06:F7:E3:BC tkr
Device 7D:20:E7:E5:49:8D 24:31:41:5a:1a:14
Device 00:16:94:28:DF:13 MB 660 MS
Device 08:DF:1F:DB:08:A2 LE-B35C
Device 00:16:94:28:4F:D3 MB 660 MS
Device 6A:99:24:40:D5:B1 DUT-SLAVE
Device 58:0E:A3:72:C2:D5 DUT-SLAVE
Device 47:2E:8C:88:AC:44 [LG] webOS TV UJ630V
Device A0:6F:AA:46:31:D1 612MANJ6A687 UW341C
Device C8:0A:9C:09:3E:38 Tile
Device F0:DF:FB:66:20:1F Tile
Device 7E:E7:30:C3:9F:96 ac_hi_test_hi_ECC5
Device 6C:E2:A9:F8:EE:29 [LG] webOS TV UJ634V
uart_cli:~$ connect ac_hi_test_hi_ECC5uart_cli:~$ uart_cli:~$ <info> app: CENTRAL: Connecting...
uart_cli:~$ Connected to address: uart_cli:~$ 7E uart_cli:~$ E7 uart_cli:~$ 30 uart_cli:~$ C3 uart_cli:~$ 9F uart_cli:~$ 96 uart_cli:~$ 
uart_cli:~$ <info> app: CENTRAL: Connected, handle: 0.
uart_cli:~$ <info> app: Data length updated to 27 bytes.
uart_cli:~$ Current MTU: 158
uart_cli:~$ MTU changed successfully
uart_cli:~$ pair LESC 7E:E7:30:C3:9F:96 Start pairing
uart_cli:~$ <info> app: PERIPHERAL: BLE_GAP_EVT_AUTH_STATUS: status=0x0 bond=0x1 lv4: 0
uart_cli:~$ <info> peer_manager_handler: Connection secured: role: Central, conn_handle: 0, procedure: Bonding
uart_cli:~$ gatt 
  characteristicsindicationnotificationread
  serviceswrite
uart_cli:~$ gatt 
  characteristicsindicationnotificationread
  serviceswrite
uart_cli:~$ gatt services 7E:E7:30:C3:9F:96 uart_cli:~$ <info> app: GATT Services
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Services count: 9
uart_cli:~$ Found service UUIDs: 
uart_cli:~$ UUID: 1800 type: 0x1
uart_cli:~$ UUID: 1801 type: 0x1
uart_cli:~$ UUID: 180A type: 0x1
uart_cli:~$ UUID: 180F type: 0x1
uart_cli:~$ UUID: 0 type: 0x2
uart_cli:~$ UUID: 0 type: 0x3
uart_cli:~$ UUID: 0 type: 0x4
uart_cli:~$ UUID: 0 type: 0x5
uart_cli:~$ UUID: 0 type: 0x6
uart_cli:~$ gatt services 7E:E7:30:C3:9F:96uart_cli:~$ <info> app: GATT Services
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Services count: 9
uart_cli:~$ Found service UUIDs: 
uart_cli:~$ UUID: 1800 type: 0x1
uart_cli:~$ UUID: 1801 type: 0x1
uart_cli:~$ UUID: 180A type: 0x1
uart_cli:~$ UUID: 180F type: 0x1
uart_cli:~$ UUID: F4BD type: 0x2
uart_cli:~$ UUID: F2B4 type: 0x3
uart_cli:~$ UUID: 3049 type: 0x4
uart_cli:~$ UUID: 2EAF type: 0x5
uart_cli:~$ UUID: AE62 type: 0x6
uart_cli:~$ gatt characteristics 7E:E7:30:C3:9F:96 2EAFuart_cli:~$ <info> app: Count: 7
uart_cli:~$ <info> app: m_srv_char.char_decl.handle: 5C
uart_cli:~$ <info> app: m_srv_char.char_value_handle: 5D
uart_cli:~$ <info> app: m_srv_char.char_data.uuid: 0
uart_cli:~$ <info> app: m_srv_char.char_decl.handle: 5E
uart_cli:~$ <info> app: m_srv_char.char_value_handle: 5F
uart_cli:~$ <info> app: m_srv_char.char_data.uuid: 0
uart_cli:~$ <info> app: m_srv_char.char_decl.handle: 60
uart_cli:~$ <info> app: m_srv_char.char_value_handle: 61
uart_cli:~$ <info> app: m_srv_char.char_data.uuid: 0
uart_cli:~$ <info> app: m_srv_char.char_decl.handle: 62
uart_cli:~$ <info> app: m_srv_char.char_value_handle: 63
uart_cli:~$ <info> app: m_srv_char.char_data.uuid: 0
uart_cli:~$ <info> app: m_srv_char.char_decl.handle: 64
uart_cli:~$ <info> app: m_srv_char.char_value_handle: 65
uart_cli:~$ <info> app: m_srv_char.char_data.uuid: 0
uart_cli:~$ <info> app: m_srv_char.char_decl.handle: 66
uart_cli:~$ <info> app: m_srv_char.char_value_handle: 67
uart_cli:~$ <info> app: m_srv_char.char_data.uuid: 0
uart_cli:~$ <info> app: m_srv_char.char_decl.handle: 68
uart_cli:~$ <info> app: m_srv_char.char_value_handle: 69
uart_cli:~$ <info> app: m_srv_char.char_data.uuid: 0
uart_cli:~$ Characteristic UUID: 0
uart_cli:~$ Parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 1 uart_cli:~$ write_wo_resp: 0 uart_cli:~$ write: 0 uart_cli:~$ notify: 0
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ Characteristic UUID: 0
uart_cli:~$ Parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 1 uart_cli:~$ write_wo_resp: 0 uart_cli:~$ write: 0 uart_cli:~$ notify: 0
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ Characteristic UUID: 0
uart_cli:~$ Parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 1 uart_cli:~$ write_wo_resp: 0 uart_cli:~$ write: 0 uart_cli:~$ notify: 0
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ Characteristic UUID: 0
uart_cli:~$ Parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 1 uart_cli:~$ write_wo_resp: 0 uart_cli:~$ write: 0 uart_cli:~$ notify: 0
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ Characteristic UUID: 0
uart_cli:~$ Parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 0 uart_cli:~$ write_wo_resp: 1 uart_cli:~$ write: 1 uart_cli:~$ notify: 0
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ Characteristic UUID: 0
uart_cli:~$ Parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 1 uart_cli:~$ write_wo_resp: 0 uart_cli:~$ write: 0 uart_cli:~$ notify: 0
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ Characteristic UUID: 0
uart_cli:~$ Parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 1 uart_cli:~$ write_wo_resp: 0 uart_cli:~$ write: 1 uart_cli:~$ notify: 1
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ Number of characteristics: 7
uart_cli:~$ <info> app: Discovers Descriptors
uart_cli:~$ <info> app: err_code: 0
uart_cli:~$ <info> app: Count in descriptor: 1
uart_cli:~$ <info> app: Count in descriptor: 0
uart_cli:~$ No descriptors for characteristic, notifications and indications not possible
uart_cli:~$ gatt characteristics 7E:E7:30:C3:9F:96 2EAF    AE62uart_cli:~$ <info> app: Count: 4
<info> app: m_srv_char.char_decl.handle: 93
<info> app: m_srv_char.char_value_handle: 94
<info> app: m_srv_char.char_data.uuid: 0
<info> app: m_srv_char.char_decl.handle: 95
<info> app: m_srv_char.char_value_handle: 96
<info> app: m_srv_char.char_data.uuid: 0
<info> app: m_srv_char.char_decl.handle: 98
<info> app: m_srv_char.char_value_handle: 99
<info> app: m_srv_char.char_data.uuid: 0
<info> app: m_srv_char.char_decl.handle: 9B
<info> app: m_srv_char.char_value_handle: 9C
<info> app: m_srv_char.char_data.uuid: 0
Characteristic UUID: 0
Parameters:
broadcast: 0 read: 0 write_wo_resp: 1 write: 0 notify: 0
indicate: 0 auth_signed_wr: 0
Characteristic UUID: 0
Parameters:
broadcast: 0 read: 0 write_wo_resp: 0 write: 0 notify: 1
indicate: 0 auth_signed_wr: 0
Characteristic UUID: 0
Parameters:
broadcast: 0 read: 1 write_wo_resp: 1 write: 1 notify: 1
indicate: 0 auth_signed_wr: 0
Characteristic UUID: 0
Parameters:
broadcast: 0 read: 0 write_wo_resp: 1 write: 1 notify: 0
indicate: 0 auth_signed_wr: 0
Number of characteristics: 4
<info> app: Discovers Descriptors
<info> app: err_code: 0
<info> app: Discovers Descriptors
<info> app: err_code: 11
<error> app: Fatal error
<warning> app: System reset


uart_cli:~$ BLE app with command line interface example started.
uart_cli:~$ Press Tab to view all available commands.
uart_cli:~$ co  connect 0uart_cli:~$ uart_cli:~$ <info> app: Scanning
uart_cli:~$ Connected to address: uart_cli:~$ 40 uart_cli:~$ 4F uart_cli:~$ 0C uart_cli:~$ 33 uart_cli:~$ 57 uart_cli:~$ 2E uart_cli:~$ 
uart_cli:~$ <info> app: CENTRAL: Connected, handle: 0.
uart_cli:~$ <info> peer_manager_handler: Connection secured: role: Central, conn_handle: 0, procedure: Encryption
uart_cli:~$ Current MTU: 158
uart_cli:~$ MTU changed successfully
uart_cli:~$ <info> app: Data length updated to 27 bytes.
uart_cli:~$ gatt services 40:4F:0C:33:57:2E uart_cli:~$ <info> app: GATT Services
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Services count: 9
uart_cli:~$ Found service UUIDs: 
uart_cli:~$ UUID: 1800 type: 0x1
uart_cli:~$ UUID: 1801 type: 0x1
uart_cli:~$ UUID: 180A type: 0x1
uart_cli:~$ UUID: 180F type: 0x1
uart_cli:~$ UUID: 0 type: 0x2
uart_cli:~$ UUID: 0 type: 0x3
uart_cli:~$ UUID: 0 type: 0x4
uart_cli:~$ UUID: 0 type: 0x5
uart_cli:~$ UUID: 0 type: 0x6
uart_cli:~$ gatt services 40:4F:0C:33:57:2Euart_cli:~$ <info> app: GATT Services
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Services count: 9
uart_cli:~$ Found service UUIDs: 
uart_cli:~$ UUID: 1800 type: 0x1
uart_cli:~$ UUID: 1801 type: 0x1
uart_cli:~$ UUID: 180A type: 0x1
uart_cli:~$ UUID: 180F type: 0x1
uart_cli:~$ UUID: F4BD type: 0x2
uart_cli:~$ UUID: F2B4 type: 0x3
uart_cli:~$ UUID: 3049 type: 0x4
uart_cli:~$ UUID: 2EAF type: 0x5
uart_cli:~$ UUID: AE62 type: 0x6
uart_cli:~$ gatt che aracteristics 40:4F:0C:33:57:2E 180Fuart_cli:~$ <info> app: Count: 1
uart_cli:~$ <info> app: m_srv_char.char_decl.handle: 1C
uart_cli:~$ <info> app: m_srv_char.char_value_handle: 1D
uart_cli:~$ <info> app: m_srv_char.char_data.uuid: 2A19
uart_cli:~$ Characteristic UUID: 2A19
uart_cli:~$ Parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 1 uart_cli:~$ write_wo_resp: 0 uart_cli:~$ write: 0 uart_cli:~$ notify: 1
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ Number of characteristics: 1
uart_cli:~$ <info> app: Discovers Descriptors
uart_cli:~$ <info> app: err_code: 0
uart_cli:~$ <info> app: Count in descriptor: 0
uart_cli:~$ No descriptors for characteristic, notifications and indications not possible
uart_cli:~$

    I also did a test where I try to connect, to my phone, and setting up my GATT server on my phone with a custom service UUID, and custom characteristic UUID. And that worked perfectly:

    Fullscreen 20181120_112145putty.log Download 
    =~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2018.11.20 11:21:45 =~=~=~=~=~=~=~=~=~=~=~=

  advertiseballocbonded_devicesclear
  clear_devicescliconnectconnected_devices
  device_namedevicesdisconnectgatt
  historykey_replylogmpu
  numericpairparametersprivacy
  queueremove_bondresizescan
uart_cli:~$ scan onScan started
uart_cli:~$ <info> app: Scanning
uart_cli:~$ devicesDevice 70:21:3B:A6:4F:D4 32:c8:53:30:31:30
Device 74:AB:5C:BE:02:E0 Galaxy S9
Device 00:16:94:1E:2F:51 MB 660 MS
uart_cli:~$ connect Galaxy S9uart_cli:~$  uart_cli:~$ connect Galaxy S9uart_cli:~$  uart_cli:~$ scan onScan started
uart_cli:~$ <info> app: Scanning
uart_cli:~$ deivcesdeivces: command not found
uart_cli:~$ v devicesDevice 70:21:3B:A6:4F:D4 32:c8:53:30:31:30
Device 74:AB:5C:BE:02:E0 Galaxy S9
Device 00:16:94:1E:2F:51 MB 660 MS
Device C8:0A:9C:09:3E:38 Tile
Device 58:0E:A3:72:C2:D5 DUT-SLAVE
Device 6A:99:24:40:D5:B1 DUT-SLAVE
uart_cli:~$ connect Galaxy S9uart_cli:~$  uart_cli:~$ connect 74:AB:5C. :BE:02:E0uart_cli:~$ uart_cli:~$ <info> app: CENTRAL: Connecting...
uart_cli:~$ Connected to address: uart_cli:~$ 74 uart_cli:~$ AB uart_cli:~$ 5C uart_cli:~$ BE uart_cli:~$ 02 uart_cli:~$ E0 uart_cli:~$ 
uart_cli:~$ <info> app: CENTRAL: Connected, handle: 1.
uart_cli:~$ Current MTU: 247
uart_cli:~$ MTU changed successfully
uart_cli:~$ <info> app: Data length updated to 251 bytes.
uart_cli:~$ <info> nrf_ble_lesc: Calling sd_ble_gap_lesc_dhkey_reply on conn_handle: 1
uart_cli:~$ <info> app: PERIPHERAL: BLE_GAP_EVT_PASSKEY_DISPLAY: passkey=402446 match_req=1
uart_cli:~$ <info> app: Type /numeric accept/ to confirm, /numeric reject/ to reject
uart_cli:~$ Connection parameters update success
uart_cli:~$ gatt services 
  40:4F:0C:33:57:2E74:AB:5C:BE:02:E0
uart_cli:~$ gatt services 74:AB:5C:BE:02:E0 uart_cli:~$ <info> app: GATT Services
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ <info> app: Services count: 5
uart_cli:~$ Found service UUIDs: 
uart_cli:~$ UUID: 1801 type: 0x1
uart_cli:~$ UUID: 1800 type: 0x1
uart_cli:~$ UUID: 0 type: 0x7
uart_cli:~$ UUID: 181C type: 0x1
uart_cli:~$ UUID: 180F type: 0x1
uart_cli:~$ <info> app: PERIPHERAL: BLE_GAP_EVT_AUTH_STATUS: status=0x1 bond=0x0 lv4: 0
uart_cli:~$ <info> peer_manager_handler: Connection security failed: role: Central, conn_handle: 0x1, procedure: Bonding, error: 1
uart_cli:~$ <info> app: CENTRAL: Disconnected, handle: 1, reason: 0x13
uart_cli:~$ connect 1uart_cli:~$ uart_cli:~$ <info> app: Try again with correct peer ID.
uart_cli:~$ bonded_devices Peers count: 1 
ID: 0  address: 40:4F:0C:33:57:2E
uart_cli:~$ connectr          devicesDevice 70:21:3B:A6:4F:D4 32:c8:53:30:31:30
Device 74:AB:5C:BE:02:E0 Galaxy S9
Device 00:16:94:1E:2F:51 MB 660 MS
Device C8:0A:9C:09:3E:38 Tile
Device 58:0E:A3:72:C2:D5 DUT-SLAVE
Device 6A:99:24:40:D5:B1 DUT-SLAVE
Device D1:43:9F:52:61:E0 tkr
Device DB:AB:F6:1A:AE:D9 Tile
Device 47:2E:8C:88:AC:44 [LG] webOS TV UJ630V
Device 00:16:94:28:DB:DD MB 660 MS
uart_cli:~$ s clear_devices uart_cli:~$ devicesuart_cli:~$ scan ion   onScan started
uart_cli:~$ <info> app: Scanning
uart_cli:~$ deivce    vicesDevice 47:2E:8C:88:AC:44 [LG] webOS TV UJ630V
Device 63:E6:16:87:34:95 DUT-SLAVE
uart_cli:~$ devicesDevice 47:2E:8C:88:AC:44 [LG] webOS TV UJ630V
Device 63:E6:16:87:34:95 DUT-SLAVE
Device 76:96:79:E1:F2:69 Galaxy S9
Device DB:AB:F6:1A:AE:D9 Tile
Device 5E:55:46:9F:0C:D3 32:c8:53:30:31:30
uart_cli:~$ connect Galaxyuart_cli:~$ uart_cli:~$ <info> app: Device not found
uart_cli:~$ connect Galaxy      76:96:79:E1:F2:69uart_cli:~$ uart_cli:~$ <info> app: CENTRAL: Connecting...
uart_cli:~$ Connected to address: uart_cli:~$ 76 uart_cli:~$ 96 uart_cli:~$ 79 uart_cli:~$ E1 uart_cli:~$ F2 uart_cli:~$ 69 uart_cli:~$ 
uart_cli:~$ <info> app: CENTRAL: Connected, handle: 1.
uart_cli:~$ Current MTU: 247
uart_cli:~$ MTU changed successfully
uart_cli:~$ pair LESC 
  40:4F:0C:33:57:2E76:96:79:E1:F2:69
uart_cli:~$ pair LESC <info> app: Data length updated to 251 bytes.
uart_cli:~$ pair LESC 76:96:79:E1:F2:69 
  mitmoob
uart_cli:~$ pair LESC 76:96:79:E1:F2:69 Start pairing
uart_cli:~$ <info> nrf_ble_lesc: Calling sd_ble_gap_lesc_dhkey_reply on conn_handle: 1
uart_cli:~$ Connection parameters update success
uart_cli:~$ <info> app: PERIPHERAL: BLE_GAP_EVT_AUTH_STATUS: status=0x0 bond=0x1 lv4: 0
uart_cli:~$ <info> peer_manager_handler: Connection secured: role: Central, conn_handle: 1, procedure: Bonding
uart_cli:~$ Connection parameters update success
uart_cli:~$ gatt e services 
  40:4F:0C:33:57:2E76:96:79:E1:F2:69
uart_cli:~$ gatt services 76:96:79:E1:F2:69 uart_cli:~$ <info> app: GATT Services
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Services count: 5
uart_cli:~$ Found service UUIDs: 
uart_cli:~$ UUID: 1801 type: 0x1
uart_cli:~$ UUID: 1800 type: 0x1
uart_cli:~$ UUID: AAA0 type: 0x7
uart_cli:~$ UUID: 181C type: 0x1
uart_cli:~$ UUID: 180F type: 0x1
uart_cli:~$ gatt characteristics 
  40:4F:0C:33:57:2E76:96:79:E1:F2:69
uart_cli:~$ gatt characteristics 76:96:79:E1:F2:69 AAA0uart_cli:~$ <info> app: Count: 2
uart_cli:~$ <info> app: m_srv_char.char_decl.handle: 29
uart_cli:~$ <info> app: m_srv_char.char_value_handle: 2A
uart_cli:~$ <info> app: m_srv_char.char_data.uuid: AAA1
uart_cli:~$ <info> app: m_srv_char.char_decl.handle: 2F
uart_cli:~$ <info> app: m_srv_char.char_value_handle: 30
uart_cli:~$ <info> app: m_srv_char.char_data.uuid: AAA2
uart_cli:~$ Characteristic UUID: AAA1
uart_cli:~$ Parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 1 uart_cli:~$ write_wo_resp: 0 uart_cli:~$ write: 0 uart_cli:~$ notify: 1
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ Characteristic UUID: AAA2
uart_cli:~$ Parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 0 uart_cli:~$ write_wo_resp: 1 uart_cli:~$ write: 1 uart_cli:~$ notify: 0
uart_cli:~$ indicate: 1 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ Number of characteristics: 2
uart_cli:~$ <info> app: Discovers Descriptors
uart_cli:~$ <info> app: err_code: 0
uart_cli:~$ <info> app: Count in descriptor: 1
uart_cli:~$ gatt read 
  40:4F:0C:33:57:2E76:96:79:E1:F2:69
uart_cli:~$ gatt read 76:96:79:E1:F2:69 AAA1uart_cli:~$ <info> app: Enters VS UUID Discovery
uart_cli:~$ Read data:
uart_cli:~$ 0x1E uart_cli:~$ 0x0 uart_cli:~$ 
uart_cli:~$

    I think it has to do with some settings in the config file or where ever. The hearing aid have 5 custom VS UUID services and quite a few VS UUID characteristics. I have already turned up NRF_SDH_BLE_VS_UUID_COUNT, but perhaps I have to turn another setting up?

  • 0 in reply to Dresse

    Hi,

    It's pretty strange to see 19 bytes. I can see the UUID is actually inside that 19 bytes , started from 0x87 ended with 0x6E . It's your first characteristic's UUID.

    Could you try to open a new application and try just to do a sd_ble_gattc_read() on that exact handle of the characteristic and see what response you have 16 or 19  bytes ? Then test with a known example (ble_app_uart) so we can reproduce here. 

  • 0 in reply to Hung Bui

    Hi Hung,

    I thought to let you know, that right now, i'm testing with my phone as a peripheral, where I am using nrf connect app, and then I have entered my custom service UUID and custom characteristic. I'm not going to work until monday, to get the hearingaid. I haven't been able to use the correct hearingaid, since I made the custom code to characteristic, but I'm simulating it with my phone. But I don't think that should be a problem?

    Now moving on to the test, I tested it by creating a new command for the CLI, where when I called the command, it would go straight to a sd_ble_gattc_read() with the exact handle i.e. 62, and this gave me the same response with 19 bytes.

    I tried to build a new project with ble_app_uart, but that use an extra J-link right? I don't have that, but I don't know if it is easy to direct it to the normal uart connection, so that I can see it via PuTTy?

  • 0 in reply to Dresse

    I don't think you need any extra Jlink to test with ble_app_uart. If you have a nRF52 board and a programmer you should be able to do flash and test. We will try to test the sd_ble_gattc_read() function here as well. 

  • 0 in reply to Hung Bui

    Hi Dresse, 

    I think I know what that 19 bytes for. If you have a look here 

    It's the format of the 0x2803 attribute that you read at handle 62, it's the characteristic declaration, which include: characteristic properties (0x1A), characteristic value handle (0x003F) and the 128 bit UUID. 

    Base on this you can extract the 128 bit UUID and extract the properties, value handle. 

  • +1 in reply to Hung Bui

    And now it works like a charm! Thanks Hung!

     

    Fullscreen 20181123_121839putty.log Download 
    =~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2018.11.23 12:18:39 =~=~=~=~=~=~=~=~=~=~=~=


uart_cli:~$ BLE app with command line interface example started.
uart_cli:~$ Press Tab to view all available commands.
uart_cli:~$ connect 0uart_cli:~$ uart_cli:~$ <info> app: Scanning
uart_cli:~$ Connected to address: uart_cli:~$ 08 uart_cli:~$ AE uart_cli:~$ D6 uart_cli:~$ 81 uart_cli:~$ 3F uart_cli:~$ 26 uart_cli:~$ 
uart_cli:~$ <info> app: CENTRAL: Connected, handle: 0.
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 <info> peer_manager_handler: Connection secured: role: Central, conn_handle: 0, procedure: Encryption
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 Current MTU: 247
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 MTU changed successfully
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 <info> app: Data length updated to 251 bytes.
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 <info> peer_manager_handler: Connection secured: role: Central, conn_handle: 0, procedure: Encryption
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 Connection parameters update success
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 uart_cli:~$ <info> app: GATT Services
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Services count: 6
uart_cli:~$ Found service UUIDs: 
uart_cli:~$ UUID: 1801 type: 0x1
uart_cli:~$ UUID: 1800 type: 0x1
uart_cli:~$ UUID: AE62 type: 0x2
uart_cli:~$ UUID: 181C type: 0x1
uart_cli:~$ UUID: 180F type: 0x1
uart_cli:~$ UUID: 2EAF type: 0x3
uart_cli:~$ gatt characteristics 08:AE:D6:81:3F:26 AE62uart_cli:~$ <info> app: Number of characteristics: 2
uart_cli:~$ Characteristics: 
uart_cli:~$ UUID: B52E type: 0x4
uart_cli:~$ With these parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 1 uart_cli:~$ write_wo_resp: 0 uart_cli:~$ write: 0 uart_cli:~$ notify: 1
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ UUID: AAA2 type: 0x5
uart_cli:~$ With these parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 0 uart_cli:~$ write_wo_resp: 1 uart_cli:~$ write: 1 uart_cli:~$ notify: 0
uart_cli:~$ indicate: 1 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ <info> app: CENTRAL: Disconnected, handle: 0, reason: 0x13
uart_cli:~$

    Just a recap for anyone else stumbling upon this problem:
    If a custom characteristic, inside a custom service, has a different base UUID, then it needs to be read specifically with sd_ble_gattc_read, this is done as described in the posts above. Since you read on a characteristic declaration it has more than 16 bytes, as Hung described. That just needs to be decoded correctly and you are good to go!

Reply
  • +1 in reply to Hung Bui

    And now it works like a charm! Thanks Hung!

     

    Fullscreen 20181123_121839putty.log Download 
    =~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2018.11.23 12:18:39 =~=~=~=~=~=~=~=~=~=~=~=


uart_cli:~$ BLE app with command line interface example started.
uart_cli:~$ Press Tab to view all available commands.
uart_cli:~$ connect 0uart_cli:~$ uart_cli:~$ <info> app: Scanning
uart_cli:~$ Connected to address: uart_cli:~$ 08 uart_cli:~$ AE uart_cli:~$ D6 uart_cli:~$ 81 uart_cli:~$ 3F uart_cli:~$ 26 uart_cli:~$ 
uart_cli:~$ <info> app: CENTRAL: Connected, handle: 0.
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 <info> peer_manager_handler: Connection secured: role: Central, conn_handle: 0, procedure: Encryption
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 Current MTU: 247
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 MTU changed successfully
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 <info> app: Data length updated to 251 bytes.
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 <info> peer_manager_handler: Connection secured: role: Central, conn_handle: 0, procedure: Encryption
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 Connection parameters update success
uart_cli:~$ gatt services 08:AE:D6:81:3F:26 uart_cli:~$ <info> app: GATT Services
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Saving all Service DATA
uart_cli:~$ <info> app: Services count: 6
uart_cli:~$ Found service UUIDs: 
uart_cli:~$ UUID: 1801 type: 0x1
uart_cli:~$ UUID: 1800 type: 0x1
uart_cli:~$ UUID: AE62 type: 0x2
uart_cli:~$ UUID: 181C type: 0x1
uart_cli:~$ UUID: 180F type: 0x1
uart_cli:~$ UUID: 2EAF type: 0x3
uart_cli:~$ gatt characteristics 08:AE:D6:81:3F:26 AE62uart_cli:~$ <info> app: Number of characteristics: 2
uart_cli:~$ Characteristics: 
uart_cli:~$ UUID: B52E type: 0x4
uart_cli:~$ With these parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 1 uart_cli:~$ write_wo_resp: 0 uart_cli:~$ write: 0 uart_cli:~$ notify: 1
uart_cli:~$ indicate: 0 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ UUID: AAA2 type: 0x5
uart_cli:~$ With these parameters:
uart_cli:~$ broadcast: 0 uart_cli:~$ read: 0 uart_cli:~$ write_wo_resp: 1 uart_cli:~$ write: 1 uart_cli:~$ notify: 0
uart_cli:~$ indicate: 1 uart_cli:~$ auth_signed_wr: 0
uart_cli:~$ <info> app: CENTRAL: Disconnected, handle: 0, reason: 0x13
uart_cli:~$

    Just a recap for anyone else stumbling upon this problem:
    If a custom characteristic, inside a custom service, has a different base UUID, then it needs to be read specifically with sd_ble_gattc_read, this is done as described in the posts above. Since you read on a characteristic declaration it has more than 16 bytes, as Hung described. That just needs to be decoded correctly and you are good to go!

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