Hi Bastien, On Tue, Oct 17, 2017 at 7:41 PM, Bastien Nocera <hadess@xxxxxxxxxx> wrote: > Hey, > > The Surface 3 pen (part of the 2nd generation of Surface pens[1]) uses > Bluetooth LE for its top button, which one can assign to a function, > usually a note taking application on Windows. > > After pairing, bluez throws away all the characteristics, UUIDs and > other properties it gathered[2]. > > Subsequent attempts at pressing the pen button just throws a wobbly[3]. > > Any ideas? This apparently used to work, and there's some very hacky > solutions for those devices: > https://github.com/frebib/surface-scripts/blob/master/pend > > Cheers > > [1]: https://en.wikipedia.org/wiki/Surface_Pen#Second_generation > [2]: > > # pair C5:2A:C6:5C:CC:BD > Attempting to pair with C5:2A:C6:5C:CC:BD > [CHG] Device C5:2A:C6:5C:CC:BD Connected: yes > [CHG] Device C5:2A:C6:5C:CC:BD UUIDs: 00001800-0000-1000-8000-00805f9b34fb > [CHG] Device C5:2A:C6:5C:CC:BD UUIDs: 00001801-0000-1000-8000-00805f9b34fb > [CHG] Device C5:2A:C6:5C:CC:BD UUIDs: 0000180a-0000-1000-8000-00805f9b34fb > [CHG] Device C5:2A:C6:5C:CC:BD UUIDs: 00001812-0000-1000-8000-00805f9b34fb > [CHG] Device C5:2A:C6:5C:CC:BD ServicesResolved: yes > [CHG] Device C5:2A:C6:5C:CC:BD Paired: yes > [NEW] Primary Service > /org/bluez/hci0/dev_C5_2A_C6_5C_CC_BD/service0008 > 00001801-0000-1000-8000-00805f9b34fb > Generic Attribute Profile > [NEW] Characteristic > /org/bluez/hci0/dev_C5_2A_C6_5C_CC_BD/service0008/char0009 > 00002a05-0000-1000-8000-00805f9b34fb > Service Changed > [NEW] Descriptor > /org/bluez/hci0/dev_C5_2A_C6_5C_CC_BD/service0008/char0009/desc000b > 00002902-0000-1000-8000-00805f9b34fb > Client Characteristic Configuration > [NEW] Primary Service > /org/bluez/hci0/dev_C5_2A_C6_5C_CC_BD/service000c > 0000180a-0000-1000-8000-00805f9b34fb > Device Information > [NEW] Characteristic > /org/bluez/hci0/dev_C5_2A_C6_5C_CC_BD/service000c/char000d > 00002a29-0000-1000-8000-00805f9b34fb > Manufacturer Name String > [NEW] Characteristic > /org/bluez/hci0/dev_C5_2A_C6_5C_CC_BD/service000c/char000f > 00002a27-0000-1000-8000-00805f9b34fb > Hardware Revision String > [NEW] Characteristic > /org/bluez/hci0/dev_C5_2A_C6_5C_CC_BD/service000c/char0011 > 00002a26-0000-1000-8000-00805f9b34fb > Firmware Revision String > [NEW] Characteristic > /org/bluez/hci0/dev_C5_2A_C6_5C_CC_BD/service000c/char0013 > 00002a50-0000-1000-8000-00805f9b34fb > PnP ID > Pairing successful > [CHG] Device C5:2A:C6:5C:CC:BD Modalias: usb:v045Ep07C5d0001 > [CHG] Device C5:2A:C6:5C:CC:BD ServicesResolved: no > [CHG] Device C5:2A:C6:5C:CC:BD Connected: no This only means it got disconnected otherwise you would see [DEL] on all its attributes above. > [3]: > > HCI sniffer - Bluetooth packet analyzer ver 5.47 > device: hci0 snap_len: 1500 filter: 0xffffffffffffffff >> HCI Event: LE Meta Event (0x3e) plen 12 > LE Advertising Report > ADV_DIRECT_IND - Connectable directed advertising (1) > bdaddr C5:2A:C6:5C:CC:BD (Random) > RSSI: -67 > < 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 2 > status 0x00 > < HCI Command: LE Create Connection (0x08|0x000d) plen 25 > bdaddr C5:2A:C6:5C:CC:BD type 1 > interval 96 window 96 initiator_filter 0 > own_bdaddr_type 0 min_interval 6 max_interval 6 > latency 0 supervision_to 50 min_ce 0 max_ce 0 >> HCI Event: Command Status (0x0f) plen 4 > LE Create Connection (0x08|0x000d) status 0x00 ncmd 2 >> HCI Event: LE Meta Event (0x3e) plen 19 > LE Connection Complete > status 0x00 handle 3585, role master > bdaddr C5:2A:C6:5C:CC:BD (Random) > < HCI Command: LE Read Remote Used Features (0x08|0x0016) plen 2 > 0000: 01 0e .. >> HCI Event: Command Status (0x0f) plen 4 > LE Read Remote Used Features (0x08|0x0016) status 0x00 ncmd 1 > < HCI Command: LE Remove Device From White List (0x08|0x0012) plen 7 > 0000: 01 bd cc 5c c6 2a c5 ...\.*. >> HCI Event: Command Complete (0x0e) plen 4 > LE Remove Device From White List (0x08|0x0012) ncmd 1 > status 0x00 > < HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7 > type 0x00 (passive) > interval 60.000ms window 30.000ms > 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 2 > status 0x00 >> HCI Event: LE Meta Event (0x3e) plen 12 > LE Read Remote Used Features Complete > status 0x00 handle 3585 > Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 > < HCI Command: LE Start Encryption (0x08|0x0019) plen 28 > 0000: 01 0e 89 54 5e 69 a3 8e 13 1a 0d 3e 31 df c1 > e7 ...T^i.....>1... > 0010: a2 a4 ab a1 f9 b2 54 35 dc 20 36 2b ......T5. 6+ >> HCI Event: Command Status (0x0f) plen 4 > LE Start Encryption (0x08|0x0019) status 0x00 ncmd 1 >> HCI Event: Encrypt Change (0x08) plen 4 > status 0x00 handle 3585 encrypt 0x01 > < ACL data: handle 3585 flags 0x00 dlen 7 > ATT: MTU req (0x02) > client rx mtu 517 >> HCI Event: Number of Completed Packets (0x13) plen 5 > handle 3585 packets 1 >> ACL data: handle 3585 flags 0x02 dlen 7 > ATT: MTU resp (0x03) > server rx mtu 23 > < ACL data: handle 3585 flags 0x00 dlen 11 > ATT: Read By Group req (0x10) > start 0x0001, end 0xffff > type-uuid 0x2800 >> HCI Event: Number of Completed Packets (0x13) plen 5 > handle 3585 packets 1 >> ACL data: handle 3585 flags 0x02 dlen 24 > ATT: Read By Group resp (0x11) > attr handle 0x0001, end group handle 0x0007 > value 0x00 0x18 > attr handle 0x0008, end group handle 0x000b > value 0x01 0x18 > attr handle 0x000c, end group handle 0x0014 > value 0x0a 0x18 > < ACL data: handle 3585 flags 0x00 dlen 11 > ATT: Read By Group req (0x10) > start 0x0015, end 0xffff > type-uuid 0x2800 >> HCI Event: Number of Completed Packets (0x13) plen 5 > handle 3585 packets 1 >> ACL data: handle 3585 flags 0x02 dlen 12 > ATT: Read By Group resp (0x11) > attr handle 0x0015, end group handle 0xffff > value 0x12 0x18 > < ACL data: handle 3585 flags 0x00 dlen 11 > ATT: Read By Group req (0x10) > start 0x0001, end 0xffff > type-uuid 0x2801 >> HCI Event: Number of Completed Packets (0x13) plen 5 > handle 3585 packets 1 >> ACL data: handle 3585 flags 0x02 dlen 9 > ATT: Error (0x01) > Error: Attribute not found (10) > Read By Group req (0x10) on handle 0x0001 > < ACL data: handle 3585 flags 0x00 dlen 11 > ATT: Read By Type req (0x08) > start 0x0001, end 0xffff > type-uuid 0x2802 >> HCI Event: Number of Completed Packets (0x13) plen 5 > handle 3585 packets 1 >> ACL data: handle 3585 flags 0x02 dlen 9 > ATT: Error (0x01) > Error: Attribute not found (10) > Read By Type req (0x08) on handle 0x0001 > < ACL data: handle 3585 flags 0x00 dlen 11 > ATT: Read By Type req (0x08) > start 0x0001, end 0xffff > type-uuid 0x2803 >> ACL data: handle 3585 flags 0x02 dlen 15 > ATT: Handle notify (0x1b) > handle 0x0019 > value 0x08 0x00 0x6f 0x00 0x00 0x00 0x00 0x00 >> HCI Event: Number of Completed Packets (0x13) plen 5 > handle 3585 packets 1 >> ACL data: handle 3585 flags 0x02 dlen 15 > ATT: Handle notify (0x1b) > handle 0x0019 > value 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 >> ACL data: handle 3585 flags 0x02 dlen 27 > ATT: Read By Type resp (0x09) > length: 7 > handle 0x0002, value 0x0a 0x03 0x00 0x00 0x2a > handle 0x0004, value 0x02 0x05 0x00 0x01 0x2a > handle 0x0006, value 0x02 0x07 0x00 0x04 0x2a > < ACL data: handle 3585 flags 0x00 dlen 11 > ATT: Read By Type req (0x08) > start 0x0007, end 0xffff > type-uuid 0x2803 >> HCI Event: Number of Completed Packets (0x13) plen 5 > handle 3585 packets 1 >> ACL data: handle 3585 flags 0x02 dlen 27 > ATT: Read By Type resp (0x09) > length: 7 > handle 0x0009, value 0x20 0x0a 0x00 0x05 0x2a > handle 0x000d, value 0x02 0x0e 0x00 0x29 0x2a > handle 0x000f, value 0x02 0x10 0x00 0x27 0x2a > < ACL data: handle 3585 flags 0x00 dlen 11 > ATT: Read By Type req (0x08) > start 0x0010, end 0xffff > type-uuid 0x2803 >> HCI Event: Disconn Complete (0x05) plen 4 > status 0x00 handle 3585 reason 0x08 > Reason: Connection Timeout It seems the connection was interrupted while we are still discovering the attributes. > < 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 2 > status 0x00 > < HCI Command: LE Add Device To White List (0x08|0x0011) plen 7 > 0000: 01 bd cc 5c c6 2a c5 ...\.*. >> HCI Event: Command Complete (0x0e) plen 4 > LE Add Device To White List (0x08|0x0011) ncmd 1 > status 0x00 > < HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7 > type 0x00 (passive) > interval 60.000ms window 30.000ms > 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 2 > status 0x00 > -- > To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Luiz Augusto von Dentz -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
