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CC2640: CC2640 occured paring fail error form SNP project.

Part Number: CC2640
Other Parts Discussed in Thread: BLE-STACK

Hi

CC2640 runs Simple Network Processor(sap_3_00_01_07).

It is occured paring fail Before  enter pincode.

==============================

FE 04 00 55 05 40 00 01 08 1D

================================

Pairing fail status value is 0x08.

What is error reason?

I think It is NO_TIMER_AVAIL error?

Is it Right?

I attached log.

FE 00 00 55 01 54
FE 03 00 35 81 01 F0 FF B9
FE 01 00 75 81 00 F5
FE 08 00 35 82 80 08 00 00 00 05 01 AA 99
FE 03 00 75 82 00 03 00 F7
FE 13 00 35 83 80 01 0D 00 0D 00 44 69 73 70 6C 61 79 20 63 6C 65 61 72 27
FE 04 00 75 83 00 80 04 00 76
FE 08 00 35 82 80 18 00 00 00 14 02 AA 9B
FE 03 00 75 82 00 06 00 F2
FE 1F 00 35 83 84 03 01 18 00 18 00 43 75 72 72 65 6E 74 20 4D 65 61 73 75 72 65 6D 65 6E 74 20 53 65 6E 64 10
FE 06 00 75 83 00 84 07 00 08 00 7B
FE 08 00 35 82 80 18 00 00 00 14 03 AA 9A
FE 03 00 75 82 00 0A 00 FE
FE 21 00 35 83 84 03 01 1A 00 1A 00 43 75 72 72 65 6E 74 20 45 72 72 6F 72 20 54 72 61 6E 73 6D 69 73 73 69 6F 6E 36
FE 06 00 75 83 00 84 0B 00 0C 00 73
FE 08 00 35 82 80 18 00 00 00 14 04 AA 9D
FE 03 00 75 82 00 0E 00 FA
FE 1D 00 35 83 84 03 01 16 00 16 00 45 72 72 6F 72 20 4C 6F 67 20 54 72 61 6E 73 6D 69 73 73 69 6F 6E 07
FE 06 00 75 83 00 84 0F 00 10 00 6B
FE 08 00 35 82 80 18 00 00 00 14 05 AA 9C
FE 03 00 75 82 00 12 00 E6
FE 2A 00 35 83 84 03 01 23 00 23 00 54 68 65 20 4E 75 6D 62 65 72 20 61 6E 64 20 54 69 6D 65 20 6F 66 20 4D 6F 64 75 6C 65 20 55 73 61 67 65 48
FE 06 00 75 83 00 84 13 00 14 00 73
FE 08 00 35 82 80 08 00 00 00 01 10 AA 8C
FE 03 00 75 82 00 16 00 E2
FE 0C 00 35 83 80 01 06 00 06 00 52 65 62 6F 6F 74 1A
FE 04 00 75 83 00 80 17 00 65
FE 00 00 35 84 B1
FE 05 00 75 84 00 01 00 17 00 E2
FE 03 00 35 81 01 F1 FF B8
FE 01 00 75 81 00 F5
FE 08 00 35 82 80 08 00 00 00 01 11 AA 8D
FE 03 00 75 82 00 1A 00 EE
FE 18 00 35 83 80 01 12 00 12 00 4E 49 42 50 20 41 63 63 75 72 61 63 79 20 54 65 73 74 31
FE 04 00 75 83 00 80 1B 00 69
FE 08 00 35 82 80 18 00 00 00 14 15 AA 8C
FE 03 00 75 82 00 1D 00 E9
FE 16 00 35 83 84 03 01 0F 00 0F 00 4E 49 42 50 20 54 65 73 74 20 73 74 61 72 74 65
FE 06 00 75 83 00 84 1E 00 1F 00 75
FE 08 00 35 82 80 18 00 00 00 14 16 AA 8F
FE 03 00 75 82 00 21 00 D5
FE 18 00 35 83 84 03 01 11 00 11 00 42 61 74 74 65 72 79 20 6F 70 65 72 61 74 69 6F 6E 30
FE 06 00 75 83 00 84 22 00 23 00 75
FE 08 00 35 82 80 08 00 00 00 06 17 AA 8C
FE 03 00 75 82 00 25 00 D1
FE 1D 00 35 83 80 01 17 00 17 00 53 61 76 69 6E 67 20 43 61 6C 69 62 72 61 74 69 6F 6E 20 64 61 74 65 50
FE 04 00 75 83 00 80 26 00 54
FE 08 00 35 82 80 18 00 00 00 0C 18 AA 99
FE 03 00 75 82 00 28 00 DC
FE 1F 00 35 83 84 03 01 18 00 18 00 4C 6F 61 64 69 6E 67 20 43 61 6C 69 62 72 61 74 69 6F 6E 20 64 61 74 65 37
FE 06 00 75 83 00 84 29 00 2A 00 77
FE 08 00 35 82 80 18 00 00 00 0C 19 AA 98
FE 03 00 75 82 00 2C 00 D8
FE 1C 00 35 83 84 03 01 15 00 15 00 43 75 72 72 65 6E 74 20 73 65 74 74 69 6E 67 20 76 61 6C 75 65 78
FE 06 00 75 83 00 84 2D 00 2E 00 77
FE 08 00 35 82 01 02 00 00 00 14 20 AA 22
FE 03 00 75 82 00 30 00 C4
FE 15 00 35 83 80 01 0F 00 0F 00 46 69 72 6D 77 61 72 65 20 56 65 72 73 69 6F 07
FE 04 00 75 83 00 80 31 00 43
FE 00 00 35 84 B1
FE 05 00 75 84 00 18 00 31 00 DD
FE 03 00 35 81 01 00 18 AE
FE 01 00 75 81 00 F5
FE 08 00 35 82 01 02 00 00 00 14 00 2A 82
FE 03 00 75 82 00 34 00 C0
FE 11 00 35 83 80 01 0B 00 0B 00 44 65 76 69 63 65 20 4E 61 6D 65 19
FE 04 00 75 83 00 80 35 00 47
FE 00 00 35 84 B1
FE 05 00 75 84 00 32 00 35 00 F3
FE 03 00 35 81 01 0A 18 A4
FE 01 00 75 81 00 F5
FE 08 00 35 82 01 02 00 00 00 14 25 2A A7
FE 03 00 75 82 00 38 00 CC
FE 13 00 35 83 80 01 0D 00 0D 00 53 65 72 69 61 6C 20 4E 75 6D 62 65 72 07
FE 04 00 75 83 00 80 39 00 4B
FE 08 00 35 82 01 02 00 00 00 14 26 2A A4
FE 03 00 75 82 00 3B 00 CF
FE 16 00 35 83 80 01 10 00 10 00 46 69 72 6D 77 61 72 65 20 56 65 72 73 69 6F 6E 6A
FE 04 00 75 83 00 80 3C 00 4E
FE 00 00 35 84 B1
FE 05 00 75 84 00 36 00 3C 00 FE

FE 02 00 35 4A 00 01 7C
FE 01 00 75 4A 00 3E
FE 02 00 35 4A 01 00 7C
FE 01 00 75 4A 00 3E
FE 02 00 35 4A 02 01 7E
FE 01 00 75 4A 00 3E FE 00 00 35 03 36
FE 0D 00 75 03 00 01 10 00 00 03 C0 86 92 03 00 14 00 AA
FE 0B 00 55 43 01 02 01 06 06 FF 0D 00 03 00 00 EE
FE 01 00 55 43 00 17 FE 1E 00 55 43 00 13 09 41 56 53 4D 32 20 38 30 30 30 30 33 34 32 34 39 39 30 05 12 06 00 50 00 02 0A 00 49
FE 01 00 55 43 00 17 FE 0E 00 55 42 00 00 00 A0 00 00 00 00 01 00 00 00 49 02 F3
FE 03 00 55 05 08 00 00 5B
FE 07 00 55 8B 00 00 07 00 01 01 00 DE
FE 11 00 55 05 01 00 00 00 27 00 00 00 F4 01 01 62 AC 6A D5 7B 7D E4
FE 03 00 55 05 10 00 00 43
FE 03 00 55 8B 00 00 00 DD
FE 0A 00 55 05 04 00 00 00 06 00 00 00 F4 01 AD
FE 0A 00 55 05 04 00 00 00 27 00 00 00 F4 01 8C
FE 07 00 55 8B 00 00 07 00 01 01 00 DE
FE 03 00 55 8B 00 00 00 DD
FE 08 00 55 05 80 00 01 00 00 00 00 00 D9
FE 04 00 55 05 40 00 01 08 1D
FE 0A 00 55 05 04 00 00 00 06 00 00 00 F4 01 AD


FE 04 00 35 4C 1E 7C 06 00 19
FE 01 00 75 4C 12 2A


FE 03 00 55 46 00 00 00 10 00

Once a paring error occurs, a paring error will continue to occur until the link key is cleared.

How can resove it problem??

Br 

YJ Kim

  • Hello,

    The pairing status 0x08 corresponds to SMP_PAIRING_FAILED_UNSPECIFIED (0x08) from smp.h

    Looking at your logs, it appears that you have setup the device to wait for a pairing request, and have set the device IO capabilities to display only.

    In the log right before the pairing fails (line 102) the SNP receives an authentication event
    FE 08 00 55 05 80 00 01 00 00 00 00 00 D9
    ...................................^..............................
    This parameter (pointed to above) indicates that the device must output authentication data.

    Are you displaying authentication data? is the remote user (i.e. phone or central device) keying in this data?
    If not, I suspect the pairing will fail.

    Do you have a sniffer capture for this or detailed steps and information about what is happening on the peer device at the time of the failure?
  • One more thing, when you are receiving an authentication event with options to "display passocode" you will need to generate a passcode and send the SNP the passcode via the SNP Set Authentication Data(0x4C) API. Additionally, you should display the passcode on a display or terminal for the remote device to type in.
  • Hi

    Remote Device is phone which can dispay and type data.

    The security fail event was received immediately after receiving the authentication event and We can not afford to send Authentication Data .

    ============================================================================

    FE 08 00 55 05 80 00 01 00 00 00 00 00 D9 //Authentication event out: true, in: false, numertic :0

    FE 04 00 55 05 40 00 01 08 1D   //Security event : 01  08 //PAIRING_STATE_COMPLETE // paring error 0x08

    FE 0A 00 55 05 04 00 00 00 06 00 00 00 F4 01 AD //Connection parameters updated event

    FE 04 00 35 4C 1E 7C 06 00 19 //SNP Send Authentication Data Response // pincode 1E 7C 06 00

    ==============================================================

    Br

    YJ Kim

  • Hello,

    You need to send the authentication data, it is required as part of the design. Are you able to set the authentication data before starting to pair? what are the results?
  • The procedure of pairing is as following.

    The pairing will be performed when transmit ‘write’ command for the 1st function after connect the Tablet/mobile and Product (CC2640) via Bluetooth.

    Please refer to ‘Pin code_capture.png’ image file which show the screen for Pin code input.

    Last 6 digits of product name is used for the Pin code.

    Please refer to video clip ‘Pin code_video.mp4’ for understand the problem.

    Pin code input window is closed and Bluetooth connection is terminated after start the pairing process.

    This ‘pairing fail’ symptom is occurred intermittently when repeat the ‘pairing’, ‘bonding’ and ‘disconnect’ procedure hundreds of time after bonding.

    This ‘Pairing fail’ symptom is occurred continuously regardless of ‘power on reset’ if this symptom was occurred.

    Here we attached the Bluetooth Packet log of normal operation for your reference.

    FE 00 00 55 01 54
    FE 03 00 35 81 01 F0 FF B9
    FE 01 00 75 81 00 F5
    FE 08 00 35 82 80 08 00 00 00 05 01 AA 99
    FE 03 00 75 82 00 03 00 F7
    FE 13 00 35 83 80 01 0D 00 0D 00 44 69 73 70 6C 61 79 20 63 6C 65 61 72 27
    FE 04 00 75 83 00 80 04 00 76
    FE 08 00 35 82 80 18 00 00 00 14 02 AA 9B
    FE 03 00 75 82 00 06 00 F2
    FE 1F 00 35 83 84 03 01 18 00 18 00 43 75 72 72 65 6E 74 20 4D 65 61 73 75 72 65 6D 65 6E 74 20 53 65 6E 64 10
    FE 06 00 75 83 00 84 07 00 08 00 7B
    FE 08 00 35 82 80 18 00 00 00 14 03 AA 9A
    FE 03 00 75 82 00 0A 00 FE
    FE 21 00 35 83 84 03 01 1A 00 1A 00 43 75 72 72 65 6E 74 20 45 72 72 6F 72 20 54 72 61 6E 73 6D 69 73 73 69 6F 6E 36
    FE 06 00 75 83 00 84 0B 00 0C 00 73
    FE 08 00 35 82 80 18 00 00 00 14 04 AA 9D
    FE 03 00 75 82 00 0E 00 FA
    FE 1D 00 35 83 84 03 01 16 00 16 00 45 72 72 6F 72 20 4C 6F 67 20 54 72 61 6E 73 6D 69 73 73 69 6F 6E 07
    FE 06 00 75 83 00 84 0F 00 10 00 6B
    FE 08 00 35 82 80 18 00 00 00 14 05 AA 9C
    FE 03 00 75 82 00 12 00 E6
    FE 2A 00 35 83 84 03 01 23 00 23 00 54 68 65 20 4E 75 6D 62 65 72 20 61 6E 64 20 54 69 6D 65 20 6F 66 20 4D 6F 64 75 6C 65 20 55 73 61 67 65 48
    FE 06 00 75 83 00 84 13 00 14 00 73
    FE 08 00 35 82 80 08 00 00 00 01 10 AA 8C
    FE 03 00 75 82 00 16 00 E2
    FE 0C 00 35 83 80 01 06 00 06 00 52 65 62 6F 6F 74 1A
    FE 04 00 75 83 00 80 17 00 65
    FE 00 00 35 84 B1
    FE 05 00 75 84 00 01 00 17 00 E2
    FE 03 00 35 81 01 F1 FF B8
    FE 01 00 75 81 00 F5
    FE 08 00 35 82 80 08 00 00 00 01 11 AA 8D
    FE 03 00 75 82 00 1A 00 EE
    FE 18 00 35 83 80 01 12 00 12 00 4E 49 42 50 20 41 63 63 75 72 61 63 79 20 54 65 73 74 31
    FE 04 00 75 83 00 80 1B 00 69
    FE 08 00 35 82 80 18 00 00 00 14 15 AA 8C
    FE 03 00 75 82 00 1D 00 E9
    FE 16 00 35 83 84 03 01 0F 00 0F 00 4E 49 42 50 20 54 65 73 74 20 73 74 61 72 74 65
    FE 06 00 75 83 00 84 1E 00 1F 00 75
    FE 08 00 35 82 80 18 00 00 00 14 16 AA 8F
    FE 03 00 75 82 00 21 00 D5
    FE 18 00 35 83 84 03 01 11 00 11 00 42 61 74 74 65 72 79 20 6F 70 65 72 61 74 69 6F 6E 30
    FE 06 00 75 83 00 84 22 00 23 00 75
    FE 08 00 35 82 80 08 00 00 00 06 17 AA 8C
    FE 03 00 75 82 00 25 00 D1
    FE 1D 00 35 83 80 01 17 00 17 00 53 61 76 69 6E 67 20 43 61 6C 69 62 72 61 74 69 6F 6E 20 64 61 74 65 50
    FE 04 00 75 83 00 80 26 00 54
    FE 08 00 35 82 80 18 00 00 00 0C 18 AA 99
    FE 03 00 75 82 00 28 00 DC
    FE 1F 00 35 83 84 03 01 18 00 18 00 4C 6F 61 64 69 6E 67 20 43 61 6C 69 62 72 61 74 69 6F 6E 20 64 61 74 65 37
    FE 06 00 75 83 00 84 29 00 2A 00 77
    FE 08 00 35 82 80 18 00 00 00 0C 19 AA 98
    FE 03 00 75 82 00 2C 00 D8
    FE 1C 00 35 83 84 03 01 15 00 15 00 43 75 72 72 65 6E 74 20 73 65 74 74 69 6E 67 20 76 61 6C 75 65 78
    FE 06 00 75 83 00 84 2D 00 2E 00 77
    FE 08 00 35 82 01 02 00 00 00 14 20 AA 22
    FE 03 00 75 82 00 30 00 C4
    FE 15 00 35 83 80 01 0F 00 0F 00 46 69 72 6D 77 61 72 65 20 56 65 72 73 69 6F 07
    FE 04 00 75 83 00 80 31 00 43
    FE 00 00 35 84 B1
    FE 05 00 75 84 00 18 00 31 00 DD
    FE 03 00 35 81 01 00 18 AE
    FE 01 00 75 81 00 F5
    FE 08 00 35 82 01 02 00 00 00 14 00 2A 82
    FE 03 00 75 82 00 34 00 C0
    FE 11 00 35 83 80 01 0B 00 0B 00 44 65 76 69 63 65 20 4E 61 6D 65 19
    FE 04 00 75 83 00 80 35 00 47
    FE 00 00 35 84 B1
    FE 05 00 75 84 00 32 00 35 00 F3
    FE 03 00 35 81 01 0A 18 A4
    FE 01 00 75 81 00 F5
    FE 08 00 35 82 01 02 00 00 00 14 25 2A A7
    FE 03 00 75 82 00 38 00 CC
    FE 13 00 35 83 80 01 0D 00 0D 00 53 65 72 69 61 6C 20 4E 75 6D 62 65 72 07
    FE 04 00 75 83 00 80 39 00 4B
    FE 08 00 35 82 01 02 00 00 00 14 26 2A A4
    FE 03 00 75 82 00 3B 00 CF
    FE 16 00 35 83 80 01 10 00 10 00 46 69 72 6D 77 61 72 65 20 56 65 72 73 69 6F 6E 6A
    FE 04 00 75 83 00 80 3C 00 4E
    FE 00 00 35 84 B1
    FE 05 00 75 84 00 36 00 3C 00 FE
    
    FE 02 00 35 4A 00 01 7C
    FE 01 00 75 4A 00 3E
    FE 02 00 35 4A 01 00 7C
    FE 01 00 75 4A 00 3E
    FE 02 00 35 4A 02 01 7E
    FE 01 00 75 4A 00 3E
    FE 00 00 35 03 36
    FE 0D 00 75 03 00 01 10 00 00 03 C0 86 92 03 00 14 00 AA
    FE 0B 00 55 43 01 02 01 06 06 FF 0D 00 03 00 00 EE
    FE 01 00 55 43 00 17
    FE 1E 00 55 43 00 13 09 41 56 53 4D 32 20 38 30 30 30 30 33 34 32 34 39 39 30 05 12 06 00 50 00 02 0A 00 49
    FE 01 00 55 43 00 17
    FE 0E 00 55 42 00 00 00 A0 00 00 00 00 01 00 00 00 49 02 F3
    FE 03 00 55 05 08 00 00 5B
    FE 07 00 55 8B 00 00 07 00 01 01 00 DE
    FE 11 00 55 05 01 00 00 00 27 00 00 00 F4 01 01 92 04 D3 A9 53 53 7F
    FE 03 00 55 05 10 00 00 43
    FE 03 00 55 8B 00 00 00 DD
    FE 0A 00 55 05 04 00 00 00 06 00 00 00 F4 01 AD
    FE 0A 00 55 05 04 00 00 00 27 00 00 00 F4 01 8C
    FE 07 00 55 8B 00 00 07 00 01 01 00 DE
    FE 03 00 55 8B 00 00 00 DD
    FE 08 00 55 05 80 00 01 00 00 00 00 00 D9
    FE 0A 00 55 05 04 00 00 00 06 00 00 00 F4 01 AD
    
    FE 04 00 35 4C 1E 7C 06 00 19
    FE 01 00 75 4C 00 38
    
    FE 04 00 55 05 40 00 01 00 15
    FE 04 00 55 05 40 00 03 00 17
    
    FE 0A 00 55 88 00 00 06 00 01 00 00 E3 85 A1 17
    FE 03 00 55 88 00 00 00 DE
    FE 08 00 55 87 00 00 00 06 00 00 00 00 DC
    FE 1B 00 55 89 00 00 06 00 00 01 01 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 C1
    FE 03 00 55 89 00 00 00 DF
    FE 1B 00 55 89 00 00 06 00 00 01 02 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 C2
    FE 03 00 55 89 00 00 00 DF
    FE 14 00 55 89 00 00 06 00 00 01 03 31 35 30 31 31 39 30 34 31 31 35 33 41 82
    FE 03 00 55 89 00 00 00 DF
    FE 18 00 55 89 00 00 06 00 00 01 04 6D 30 30 30 30 30 30 30 30 30 4C 4C 4C 30 30 30 4C AA
    FE 03 00 55 89 00 00 00 DF
    FE 0F 00 55 89 00 00 06 00 00 01 05 30 30 30 00 30 30 30 00 D1
    FE 03 00 55 89 00 00 00 DF
    FE 0F 00 55 89 00 00 06 00 00 01 06 46 30 30 30 30 4C 45 53 CE
    FE 03 00 55 89 00 00 00 DF
    FE 0A 00 55 05 04 00 00 00 27 00 00 00 F4 01 8C
    FE 13 00 55 89 00 00 06 00 00 01 07 38 30 30 30 30 33 34 32 34 39 39 30 C6
    FE 03 00 55 89 00 00 00 DF

  • We attach the recorded hci_log after connect the Android and Product (CC2640) via Bluetooth.
    There are two cases (Good, Bad).
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  • Hi
    Could you tell me SMP_PAIRING_FAILED_UNSPECIFIED error.
    How can recover paring error.
    Sometimes my phone is ouccured pairng error with CC2640 device.
    Once a paring error occurs, a paring error will continue to occur until the link key is cleared.
    I don't understand why If It delete stored link key and then pairing works well.

    Br Yj Kim.
  • Hi YJ Kim,

    The link key associated with the failed pairing will not work. in this case, it must be cleared and the pairing must start over.
    Our device has failed the pairing and will not accept this link key. As far as I can tell, the btsnoop files do not show the second attempted pairing after the first failure so I am not sure what the Galaxy Tab is doing on the repair after failed pairing case

    Here is what I was able to deduce from the btsnoop logs:

    1. The devices negotiate a passkey pairing method using LE Secure Connections
    2. As per the BLE-Stack User's Guide and the spec, based on the IO capabilities on the Galaxy phone (Keyboard, Display) and the capabilities of the device (Display only) the selected pairing method will be passkey pairing. The responder (SNP) will generate and display the passkey. The initiator (phone) will type in the key.
    3. Per the btsnoop files, the pairing is failed by the SNP device after public key exchange. Our device sends two pairing failures: first is 0x08 (SMP_PAIRING_FAILED_UNSPECIFIED) and the second is 0x01 (SMP_PAIRING_FAILED_PASSKEY_ENTRY_FAILED)

    Based on the attached log ( Packet Log.txt ) the second failure returned is because the passkey is provided too late.
    (i.e. SNP Set Authentication Data (0x4C)) is sent after the pairing has already been failed. This will cause SMP_PAIRING_FAILED_PASSKEY_ENTRY_FAILED.

    I can summarize the following:

    1. the sequence of sending the passkey information to the GAPBondmgr is out of sync. A passkey (even if it is static) must be provided once pairing has begun and in response to the SNP authentication event. The flow should be as follows:

    - Receive authentication event from SNP
    - Respond with your fixed passcode (i.e. SNP Set Authentication Data)

    Based on the log sent, this set authentication data is being sent late.


    2. Something else may be going wrong in the pairing procedure. My suspicion is that the device is intermittently running out of memory. Can you enable HEAPMGR_METRICS on the device and check to see if there are any heap failures at the time that the pairing is failing? This process is described in the Debugging chapter of the Software Developer's Guide.Also note that the SNP test command (SNP_executeTestCmd) will provide the heap metrics if the SNP is built with HEAPMGR_METRICS enabled. See SNP Test Response (0x10) in the guide for information on how to decode this command.

    3. The btsnoop logs are helpful but an over the air sniffer capture would be the best for debugging this. (frontline, ellisys)

  • Hi Sean,

    We have two cases of Flash memory (Good, Bad) as text file and binary file.
    Why is the file in bad case a longer?
    Please analyze the file.

    Flash.zip

  • Hello,

    I would suspect the SNV areas of the two devices to be different based on different keys being used.
    We can analyze the files, but a more useful test would be to run items #2-#3 from my last reply.

    We need this information to move forward.