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nRF52840 dongle got disconnected within 1 minute connected to nRF52840 DK

jshen

Hi, I have one nRF52840 DK and 2 nRF52840 dongles, i used the latest SDK17.0, programmed nRF5_SDK_17.0.0_9d13099\examples\ble_peripheral\ble_app_blinky\hex\ble_app_blinky_pca10059_s140.hex to the two dongles and compiled nRF5_SDK_17.0.0_9d13099\examples\ble_central_and_peripheral\experimental\ble_app_interactive\pca10056\s140\ses to the DK. I did two tests.
Test 1:
- power on the dongle ended with A2 and scan on from DK
- connect to the A2 dongle, noticed it got disconnected within one minute with error 4352

Test 2:
- power on dongle A2 and dongle 2D
- scan on from DK, connect to dongle 2D
- scan on again from DK, connect to dongle A2
- connected_devices shows both dongles connected_devices
- within 1 minute, A2 disconnected with 4352, 2D stay connected without issue

Question:
- Why the dongle A2 always get disconnected? is it hardware defect?
I used nRF connect programmed both dongles exactly the same way

Console log with timestamp below
Test 1:
[2020-09-09 18:45:44.338]
[2020-09-09 18:45:44.799] uart_cli:~$ BLE app with command line interface example started.
[2020-09-09 18:45:44.806] uart_cli:~$ Press Tab to view all available commands.
[2020-09-09 18:45:44.814] uart_cli:~$
[2020-09-09 18:45:49.610] advertiseballocbonded_devicesclear
[2020-09-09 18:45:49.619] cliconnectconnected_devicesdevice_name
[2020-09-09 18:45:49.630] devicesdisconnectgatthistory
[2020-09-09 18:45:49.638] key_replylognumericpair
[2020-09-09 18:45:49.651] parametersprivacyqueueremove_bond
[2020-09-09 18:45:49.658] resizescan
[2020-09-09 18:45:49.662] uart_cli:~$ scan on
[2020-09-09 18:45:54.835] Scan started
[2020-09-09 18:45:54.836] uart_cli:~$ <info> app: Scanning
[2020-09-09 18:45:54.841] uart_cli:~$ devices
[2020-09-09 18:45:58.153] Device ED:5E:2C:11:B5:A2 Nordic_Blinky
[2020-09-09 18:45:58.156] Device 70:C4:F5:F8:2B:FB
[2020-09-09 18:45:58.159] uart_cli:~$ connect ED:5E:2C:11:B5:A2
[2020-09-09 18:46:14.638] uart_cli:~$ <info> app: CENTRAL: Connecting...
[2020-09-09 18:46:14.688] uart_cli:~$ Connected to address: uart_cli:~$ ED uart_cli:~$ 5E uart_cli:~$ 2C uart_cli:~$ 11 uart_cli:~$ B5 uart_cli:~$ A2 uart_cli:~$
[2020-09-09 18:46:14.719] uart_cli:~$ <info> app: CENTRAL: Connected, handle: 0.
[2020-09-09 18:46:14.723] uart_cli:~$ <info> peer_manager_handler: Peer data updated in flash: peer_id: 0, data_id: Peer rank, action: Update, no change
[2020-09-09 18:46:14.737] uart_cli:~$ Current MTU: 23
[2020-09-09 18:46:15.187] uart_cli:~$ MTU changed successfully
[2020-09-09 18:46:15.194] uart_cli:~$ connected_devices
[2020-09-09 18:46:22.077] Connected devices:
[2020-09-09 18:46:22.080] 0. ED:5E:2C:11:B5:A2 Security level: 1
[2020-09-09 18:46:22.083] uart_cli:~$ <info> app: CENTRAL: Disconnected, handle: 0, reason: 0x22
[2020-09-09 18:46:55.191] uart_cli:~$ <info> peer_manager_handler: Connection security failed: role: Central, conn_handle: 0x0, procedure: Encryption, error: 4352
[2020-09-09 18:46:55.206] uart_cli:~$ connected_devices
[2020-09-09 18:47:09.021] Connected devices:

Test 2:
[2020-09-09 18:52:26.727] uart_cli:~$ scan on
[2020-09-09 18:52:30.896] Scan started
[2020-09-09 18:52:30.898] uart_cli:~$ <info> app: Scanning
[2020-09-09 18:52:30.904] uart_cli:~$ devices
[2020-09-09 18:52:33.007] Device D2:4B:B2:1B:9C:2D Nordic_Blinky
[2020-09-09 18:52:33.010] Device ED:5E:2C:11:B5:A2 Nordic_Blinky
[2020-09-09 18:52:33.014] Device 70:C4:F5:F8:2B:FB
[2020-09-09 18:52:33.017] uart_cli:~$ connect D2:4B:B2:1B:9C:2D
[2020-09-09 18:52:41.251] uart_cli:~$ <info> app: CENTRAL: Connecting...
[2020-09-09 18:52:41.353] uart_cli:~$ Connected to address: uart_cli:~$ D2 uart_cli:~$ 4B uart_cli:~$ B2 uart_cli:~$ 1B uart_cli:~$ 9C uart_cli:~$ 2D uart_cli:~$
[2020-09-09 18:52:41.403] uart_cli:~$ <info> app: CENTRAL: Connected, handle: 0.
[2020-09-09 18:52:41.411] uart_cli:~$ Current MTU: 23
[2020-09-09 18:52:41.885] uart_cli:~$ MTU changed successfully
[2020-09-09 18:52:41.896] uart_cli:~$ <info> app: Data length updated to 27 bytes.
[2020-09-09 18:52:42.965] uart_cli:~$ co scan on
[2020-09-09 18:52:45.169] Scan started
[2020-09-09 18:52:45.171] uart_cli:~$ <info> app: Scanning
[2020-09-09 18:52:45.176] uart_cli:~$ devices
[2020-09-09 18:52:46.677] Device ED:5E:2C:11:B5:A2 Nordic_Blinky
[2020-09-09 18:52:46.682] Device 70:C4:F5:F8:2B:FB
[2020-09-09 18:52:46.684] uart_cli:~$ connect ED:5E:2C:11:B5:A2
[2020-09-09 18:52:54.017] uart_cli:~$ <info> app: CENTRAL: Connecting...
[2020-09-09 18:52:54.323] uart_cli:~$ Connected to address: uart_cli:~$ ED uart_cli:~$ 5E uart_cli:~$ 2C uart_cli:~$ 11 uart_cli:~$ B5 uart_cli:~$ A2 uart_cli:~$
[2020-09-09 18:52:54.370] uart_cli:~$ <info> app: CENTRAL: Connected, handle: 1.
[2020-09-09 18:52:54.375] uart_cli:~$ <info> peer_manager_handler: Peer data updated in flash: peer_id: 0, data_id: Peer rank, action: Update, no change
[2020-09-09 18:52:54.388] uart_cli:~$ Current MTU: 23
[2020-09-09 18:52:55.787] uart_cli:~$ MTU changed successfully
[2020-09-09 18:52:55.793] uart_cli:~$ connected_devices\
[2020-09-09 18:53:03.968] Connected devices:
[2020-09-09 18:53:03.970] 0. D2:4B:B2:1B:9C:2D Security level: 1
[2020-09-09 18:53:03.973] 1. ED:5E:2C:11:B5:A2 Security level: 1
[2020-09-09 18:53:03.978] uart_cli:~$ <info> app: CENTRAL: Disconnected, handle: 1, reason: 0x22
[2020-09-09 18:53:35.793] uart_cli:~$ <info> peer_manager_handler: Connection security failed: role: Central, conn_handle: 0x1, procedure: Encryption, error: 4352
[2020-09-09 18:53:35.807] uart_cli:~$ Connection parameters update success
[2020-09-09 18:53:42.975] uart_cli:~$ Connection parameters update success
[2020-09-09 18:53:44.686] uart_cli:~$ connected_devices
[2020-09-09 18:53:53.425] Connected devices:
[2020-09-09 18:53:53.428] 0. D2:4B:B2:1B:9C:2D Security level: 1
[2020-09-09 18:53:53.433] uart_cli:~$

Parents
  • 0

    Hi jshen, 

    Did you modify the example code ble_app_blinky or ble_app_interactive? If so, what are they?

    Can you provide the full log output from the ble_app_interactive while connecting to dongle A2? If you could set NRF_LOG_DEFAULT_LEVEL to 4 in your sdk_config.h file, that should provide more details.

    Can you provide a sniffer trace between the two devices when reproducing? You can use nRFSniffer for that.

    -Amanda H.

Reply
  • 0

    Hi jshen, 

    Did you modify the example code ble_app_blinky or ble_app_interactive? If so, what are they?

    Can you provide the full log output from the ble_app_interactive while connecting to dongle A2? If you could set NRF_LOG_DEFAULT_LEVEL to 4 in your sdk_config.h file, that should provide more details.

    Can you provide a sniffer trace between the two devices when reproducing? You can use nRFSniffer for that.

    -Amanda H.

Children
  • 0 in reply to Amanda Hsieh

    Hi Amanda,

    Thank you for looking into it.

    To make things simple,i didn't modify the code at all. The dongle was programmed with the original hex file from the downloaded SDK. I did compile the DK code using SES but without any change at all. 

    I installed latest wireshark and the nRFSniffer. unfortunately the sniffer doesn't support the nRF52 dongles i have, and although it supports the DK, but i only have one DK and needed it to run the ble_app_interactive application. I looked at the sniffer software hex files and there was no hex file for PCA10059 which is the dongle i have.

    Modifying the NRF_LOG_DEFAULT_LEVEL from 3 (info) to 4 (debug), didn't change the CLI output, i did rebuilt the project a couple of times to be sure.

    [2020-09-10 12:59:41.670] uart_cli:~$ BLE app with command line interface example started.
    [2020-09-10 12:59:41.681] uart_cli:~$ Press Tab to view all available commands.
    [2020-09-10 12:59:41.690] uart_cli:~$
    [2020-09-10 12:59:59.980] advertiseballocbonded_devicesclear
    [2020-09-10 12:59:59.980] cliconnectconnected_devicesdevice_name
    [2020-09-10 12:59:59.980] devicesnumericpair
    [2020-09-10 13:00:00.001] parametersprivacyqueueremove_bond
    [2020-09-10 13:00:00.013] resizescan
    [2020-09-10 13:00:00.013] uart_cli:~$
    [2020-09-10 13:00:01.165] uart_cli:~$ scan on
    [2020-09-10 13:00:03.483] Scan started
    [2020-09-10 13:00:03.483] uart_cli:~$ <info> app: Scanning
    [2020-09-10 13:00:03.483] uart_cli:~$ devices
    [2020-09-10 13:00:21.543] Device ED:5E:2C:11:B5:A2 Nordic_Blinky
    [2020-09-10 13:00:21.546] Device 71:12:05:FD:9F:18
    [2020-09-10 13:00:21.551] uart_cli:~$ connect ED:5E:2C:11:B5:A2
    [2020-09-10 13:00:33.598] uart_cli:~$ <info> app: CENTRAL: Connecting...
    [2020-09-10 13:00:33.666] uart_cli:~$ Connected to address: uart_cli:~$ ED uart_cli:~$ 5E uart_cli:~$ 2C uart_cli:~$ 11 uart_cli:~$ B5 uart_cli:~$ A2 uart_cli:~$
    [2020-09-10 13:00:33.681] uart_cli:~$ <info> app: CENTRAL: Connected, handle: 0.
    [2020-09-10 13:00:33.685] uart_cli:~$ <info> peer_manager_handler: Peer data updated in flash: peer_id: 0, data_id: Peer rank, action: Update, no change
    [2020-09-10 13:00:33.698] uart_cli:~$ Current MTU: 23
    [2020-09-10 13:00:34.154] uart_cli:~$ MTU changed successfully
    [2020-09-10 13:00:34.165] uart_cli:~$ <info> app: CENTRAL: Disconnected, handle: 0, reason: 0x22
    [2020-09-10 13:01:14.168] uart_cli:~$ <info> peer_manager_handler: Connection security failed: role: Central, conn_handle: 0x0, procedure: Encryption, error: 4352
    [2020-09-10 13:01:14.177] uart_cli:~$

    Best regards,

    Job

  • 0 in reply to jshen

    Hi Job, 

    Please try Erasing the DK and do it again.

    -Amanda H.  

  • 0 in reply to Amanda Hsieh

    Hi Amanda,

    Thank you very much, i will try it and let you know the result.

    Job

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