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Cannot connect to device #30

@skibbipl

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@skibbipl

I'm trying to connect to my LYWSD02 sensor with raspberry pi 3 but I cannot:

HCI sniffer - Bluetooth packet analyzer ver 5.55
device: hci0 snap_len: 1500 filter: 0xffffffff
< HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7
    type 0x00 (passive)
    interval 60.000ms window 60.000ms
    own address: 0x00 (Public) policy: white list only
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Scan Parameters (0x08|0x000b) ncmd 1
    status 0x00
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2
    value 0x01 (scanning enabled)
    filter duplicates 0x01 (enabled)
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Scan Enable (0x08|0x000c) ncmd 1
    status 0x00
> HCI Event: LE Meta Event (0x3e) plen 40
    LE Advertising Report
      ADV_IND - Connectable undirected advertising (0)
      bdaddr XX:XX:XX:XX:XX:XX (Public)
      Flags: 0x06
      Shortened service classes: 0x181a
      Unknown type 0x16 with 18 bytes data
      RSSI: -47
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2
    value 0x00 (scanning disabled)
    filter duplicates 0x00 (disabled)
> HCI Event: Command Complete (0x0e) plen 4
    LE Set Scan Enable (0x08|0x000c) ncmd 1
    status 0x00
< HCI Command: LE Create Connection (0x08|0x000d) plen 25
    bdaddr XX:XX:XX:XX:XX:XX type 0
    interval 96 window 96 initiator_filter 0
    own_bdaddr_type 0 min_interval 24 max_interval 40
    latency 0 supervision_to 42 min_ce 0 max_ce 0
> HCI Event: Command Status (0x0f) plen 4
    LE Create Connection (0x08|0x000d) status 0x00 ncmd 1
> HCI Event: LE Meta Event (0x3e) plen 19
    LE Connection Complete
      status 0x00 handle 64, role master
      bdaddr XX:XX:XX:XX:XX:XX (Public)
< HCI Command: LE Read Remote Used Features (0x08|0x0016) plen 2
  0000: 40 00                                             @.
> HCI Event: Command Status (0x0f) plen 4
    LE Read Remote Used Features (0x08|0x0016) status 0x00 ncmd 1
> HCI Event: LE Meta Event (0x3e) plen 12
    LE Read Remote Used Features Complete
      status 0x3e handle 64
      Error: Connection Failed to be Established
> HCI Event: Disconn Complete (0x05) plen 4
    status 0x00 handle 64 reason 0x3e
    Reason: Connection Failed to be Established

Any thoughts? I was able to do it on raspberry pi 4, but it was few months ago...

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