node-ble-host
node-ble-host copied to clipboard
Emill
Impossible to write into server
There is no output from console.log in service 22222222-3333-4444-5555-666666666669.
I assume that the write data was not received? How to debug this?
For testing i used BLE scanner and nRF Connect.
Hi. Do you use the "Full GATT Server Example (Peripheral)" as is in the readme?
Hmm that works fine for me when I just tested. You could try to have "sudo btmon" running in another terminal. Then start and run the example, connect through nRF Connect and write something to that characteristic. By doing so I get the following output in btmon:
< HCI Command: Reset (0x03|0x0003) plen 0 #1 [hci0] 3.624676
> HCI Event: Command Complete (0x0e) plen 4 #2 [hci0] 3.752367
Reset (0x03|0x0003) ncmd 1
Status: Success (0x00)
< HCI Command: Read BD ADDR (0x04|0x0009) plen 0 #3 [hci0] 3.759412
> HCI Event: Command Complete (0x0e) plen 10 #4 [hci0] 3.762975
Read BD ADDR (0x04|0x0009) ncmd 1
Status: Success (0x00)
Address: 00:15:83:75:96:CD (IVT corporation)
< HCI Command: LE Clear White List (0x08|0x0010) plen 0 #5 [hci0] 3.766473
> HCI Event: Command Complete (0x0e) plen 4 #6 [hci0] 3.769836
LE Clear White List (0x08|0x0010) ncmd 1
Status: Success (0x00)
< HCI Command: LE Read White List Size (0x08|0x000f) plen 0 #7 [hci0] 3.771980
> HCI Event: Command Complete (0x0e) plen 5 #8 [hci0] 3.775464
LE Read White List Size (0x08|0x000f) ncmd 1
Status: Success (0x00)
Size: 25
< HCI Command: Set Event Mask (0x03|0x0001) plen 8 #9 [hci0] 3.779154
Mask: 0x2000800000008090
Disconnection Complete
Encryption Change
Hardware Error
Encryption Key Refresh Complete
LE Meta
> HCI Event: Command Complete (0x0e) plen 4 #10 [hci0] 3.782353
Set Event Mask (0x03|0x0001) ncmd 1
Status: Success (0x00)
< HCI Command: LE Set Event Mask (0x08|0x0001) plen 8 #11 [hci0] 3.783480
Mask: 0x000000000000001f
LE Connection Complete
LE Advertising Report
LE Connection Update Complete
LE Read Remote Used Features Complete
LE Long Term Key Request
> HCI Event: Command Complete (0x0e) plen 4 #12 [hci0] 3.786223
LE Set Event Mask (0x08|0x0001) ncmd 1
Status: Success (0x00)
< HCI Command: LE Read Buffer Size (0x08|0x0002) plen 0 #13 [hci0] 3.787328
> HCI Event: Command Complete (0x0e) plen 7 #14 [hci0] 3.791180
LE Read Buffer Size (0x08|0x0002) ncmd 1
Status: Success (0x00)
Data packet length: 0
Num data packets: 0
< HCI Command: Read Buffer Size (0x04|0x0005) plen 0 #15 [hci0] 3.792652
> HCI Event: Command Complete (0x0e) plen 11 #16 [hci0] 3.797193
Read Buffer Size (0x04|0x0005) ncmd 1
Status: Success (0x00)
ACL MTU: 310 ACL max packet: 10
SCO MTU: 64 SCO max packet: 8
< HCI Command: LE Read Supported States (0x08|0x001c) plen 0 #17 [hci0] 3.798652
> HCI Event: Command Complete (0x0e) plen 12 #18 [hci0] 3.803167
LE Read Supported States (0x08|0x001c) ncmd 1
Status: Success (0x00)
States: 0x000000001fffffff
Non-connectable Advertising State
Scannable Advertising State
Connectable Advertising State
High Duty Cycle Directed Advertising State
Passive Scanning State
Active Scanning State
Initiating State
and Connection State (Master Role)
Connection State (Slave Role)
Non-connectable Advertising State
and Passive Scanning State
Scannable Advertising State
and Passive Scanning State
Connectable Advertising State
and Passive Scanning State
High Duty Cycle Directed Advertising State
and Passive Scanning State
Non-connectable Advertising State
and Active Scanning State
Scannable Advertising State
and Active Scanning State
Connectable Advertising State
and Active Scanning State
High Duty Cycle Directed Advertising State
and Active Scanning State
Non-connectable Advertising State
and Initiating State
Scannable Advertising State
and Initiating State
Non-connectable Advertising State
and Connection State (Master Role)
Scannable Advertising State
and Connection State (Master Role)
Non-connectable Advertising State
and Connection State (Slave Role)
Scannable Advertising State
and Connection State (Slave Role)
Passive Scanning State
and Initiating State
Active Scanning State
and Initiating State
Passive Scanning State
and Connection State (Master Role)
Active Scanning State
and Connection State (Master Role)
Passive Scanning State
and Connection State (Slave Role)
Active Scanning State
and Connection State (Slave Role)
Initiating State
and Connection State (Master Role)
and Master Role & Master Role
< HCI Command: LE Set Advertising Data (0x08|0x0008) plen 32 #19 [hci0] 3.812689
Length: 31
Flags: 0x06
LE General Discoverable Mode
BR/EDR Not Supported
Name (complete): MyDevice
128-bit Service UUIDs (complete): 1 entry
Vendor specific (22222222-3333-4444-5555-666666666666)
> HCI Event: Command Complete (0x0e) plen 4 #20 [hci0] 3.816195
LE Set Advertising Data (0x08|0x0008) ncmd 1
Status: Success (0x00)
< HCI Command: LE Set Advertising Parameters (0x08|0x0006) plen 15 #21 [hci0] 3.822349
Min advertising interval: 62.500 msec (0x0064)
Max advertising interval: 75.000 msec (0x0078)
Type: Connectable undirected - ADV_IND (0x00)
Own address type: Public (0x00)
Direct address type: Public (0x00)
Direct address: 00:00:00:00:00:00 (OUI 00-00-00)
Channel map: 37, 38, 39 (0x07)
Filter policy: Allow Scan Request from Any, Allow Connect Request from Any (0x00)
> HCI Event: Command Complete (0x0e) plen 4 #22 [hci0] 3.826196
LE Set Advertising Parameters (0x08|0x0006) ncmd 1
Status: Success (0x00)
< HCI Command: LE Set Advertise Enable (0x08|0x000a) plen 1 #23 [hci0] 3.827096
Advertising: Enabled (0x01)
> HCI Event: Command Complete (0x0e) plen 4 #24 [hci0] 3.832179
LE Set Advertise Enable (0x08|0x000a) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 19 #25 [hci0] 5.919560
LE Connection Complete (0x01)
Status: Success (0x00)
Handle: 68
Role: Slave (0x01)
Peer address type: Random (0x01)
Peer address: 5F:EF:5B:72:84:A2 (Resolvable)
Connection interval: 45.00 msec (0x0024)
Connection latency: 0 (0x0000)
Supervision timeout: 5000 msec (0x01f4)
Master clock accuracy: 0x00
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #26 [hci0] 6.081913
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0001-0xffff
Attribute type: Unknown (0x2b3a)
< ACL Data TX: Handle 68 flags 0x00 dlen 9 #27 [hci0] 6.097745
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0001
Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #28 [hci0] 6.171081
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0001-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 #29 [hci0] 6.172423
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 18 #30 [hci0] 6.173194
ATT: Read By Group Type Response (0x11) len 13
Attribute data length: 6
Attribute group list: 2 entries
Handle range: 0x0001-0x0004
UUID: Generic Attribute Profile (0x1801)
Handle range: 0x0005-0x0009
UUID: Generic Access Profile (0x1800)
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #31 [hci0] 6.261177
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x000a-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 #32 [hci0] 6.262271
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 26 #33 [hci0] 6.262914
ATT: Read By Group Type Response (0x11) len 21
Attribute data length: 20
Attribute group list: 1 entry
Handle range: 0x000a-0x0013
UUID: Vendor specific (22222222-3333-4444-5555-666666666666)
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #34 [hci0] 6.351151
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0014-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 #35 [hci0] 6.352465
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 9 #36 [hci0] 6.353388
ATT: Error Response (0x01) len 4
Read By Group Type Request (0x10)
Handle: 0x0014
Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #37 [hci0] 6.441250
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0001-0x0004
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 #38 [hci0] 6.442621
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 9 #39 [hci0] 6.454065
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0001
Error: Attribute Not Found (0x0a)
> HCI Event: LE Meta Event (0x3e) plen 10 #40 [hci0] 6.488094
LE Connection Update Complete (0x03)
Status: Success (0x00)
Handle: 68
Connection interval: 7.50 msec (0x0006)
Connection latency: 0 (0x0000)
Supervision timeout: 5000 msec (0x01f4)
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #41 [hci0] 6.493714
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0001-0x0004
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 #42 [hci0] 6.494392
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 13 #43 [hci0] 6.497225
ATT: Read By Type Response (0x09) len 8
Attribute data length: 7
Attribute data list: 1 entry
Handle: 0x0002
Value: 200300052a
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #44 [hci0] 6.508668
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0003-0x0004
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 #45 [hci0] 6.509551
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 9 #46 [hci0] 6.510530
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0003
Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 68 flags 0x02 dlen 9 #47 [hci0] 6.523689
ATT: Find Information Request (0x04) len 4
Handle range: 0x0004-0x0004
> HCI Event: Number of Completed Packets (0x13) plen 5 #48 [hci0] 6.524427
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 10 #49 [hci0] 6.525999
ATT: Find Information Response (0x05) len 5
Format: UUID-16 (0x01)
Handle: 0x0004
UUID: Client Characteristic Configuration (0x2902)
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #50 [hci0] 6.538809
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0005-0x0009
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 #51 [hci0] 6.539493
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 9 #52 [hci0] 6.540732
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0005
Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #53 [hci0] 6.553744
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0005-0x0009
Attribute type: Characteristic (0x2803)
< ACL Data TX: Handle 68 flags 0x00 dlen 20 #54 [hci0] 6.555418
ATT: Read By Type Response (0x09) len 15
Attribute data length: 7
Attribute data list: 2 entries
Handle: 0x0006
Value: 020700002a
Handle: 0x0008
Value: 020900012a
> HCI Event: Number of Completed Packets (0x13) plen 5 #55 [hci0] 6.555425
Num handles: 1
Handle: 68
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 #56 [hci0] 6.569687
Num handles: 1
Handle: 68
Count: 1
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #57 [hci0] 6.569904
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0009-0x0009
Attribute type: Characteristic (0x2803)
< ACL Data TX: Handle 68 flags 0x00 dlen 9 #58 [hci0] 6.571045
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0009
Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #59 [hci0] 6.583828
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000a-0x0013
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 #60 [hci0] 6.584554
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 9 #61 [hci0] 6.586567
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000a
Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #62 [hci0] 6.598728
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000a-0x0013
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 #63 [hci0] 6.599417
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 27 #64 [hci0] 6.601578
ATT: Read By Type Response (0x09) len 22
Attribute data length: 21
Attribute data list: 1 entry
Handle: 0x000b
Value: 0a0c0067666666666655554444333322222222
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #65 [hci0] 6.613748
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000c-0x0013
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 #66 [hci0] 6.614423
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 27 #67 [hci0] 6.615337
ATT: Read By Type Response (0x09) len 22
Attribute data length: 21
Attribute data list: 1 entry
Handle: 0x000d
Value: 020e0068666666666655554444333322222222
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #68 [hci0] 6.628716
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000e-0x0013
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 #69 [hci0] 6.629572
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 27 #70 [hci0] 6.630887
ATT: Read By Type Response (0x09) len 22
Attribute data length: 21
Attribute data list: 1 entry
Handle: 0x000f
Value: 08100069666666666655554444333322222222
> HCI Event: Number of Completed Packets (0x13) plen 5 #71 [hci0] 6.644576
Num handles: 1
Handle: 68
Count: 1
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #72 [hci0] 6.644708
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0010-0x0013
Attribute type: Characteristic (0x2803)
< ACL Data TX: Handle 68 flags 0x00 dlen 27 #73 [hci0] 6.646575
ATT: Read By Type Response (0x09) len 22
Attribute data length: 21
Attribute data list: 1 entry
Handle: 0x0011
Value: 1012006a666666666655554444333322222222
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #74 [hci0] 6.658671
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0012-0x0013
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 #75 [hci0] 6.659417
Num handles: 1
Handle: 68
Count: 1
< ACL Data TX: Handle 68 flags 0x00 dlen 9 #76 [hci0] 6.659880
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0012
Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 68 flags 0x02 dlen 9 #77 [hci0] 6.673687
ATT: Find Information Request (0x04) len 4
Handle range: 0x0013-0x0013
< ACL Data TX: Handle 68 flags 0x00 dlen 10 #78 [hci0] 6.675158
ATT: Find Information Response (0x05) len 5
Format: UUID-16 (0x01)
Handle: 0x0013
UUID: Client Characteristic Configuration (0x2902)
> HCI Event: Number of Completed Packets (0x13) plen 5 #79 [hci0] 6.676653
Num handles: 1
Handle: 68
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 #80 [hci0] 6.692307
Num handles: 1
Handle: 68
Count: 1
> HCI Event: LE Meta Event (0x3e) plen 10 #81 [hci0] 6.755506
LE Connection Update Complete (0x03)
Status: Success (0x00)
Handle: 68
Connection interval: 45.00 msec (0x0024)
Connection latency: 0 (0x0000)
Supervision timeout: 5000 msec (0x01f4)
> ACL Data RX: Handle 68 flags 0x02 dlen 11 #82 [hci0] 13.658756
ATT: Write Request (0x12) len 6
Handle: 0x0010
Data: 79656168
< ACL Data TX: Handle 68 flags 0x00 dlen 5 #83 [hci0] 13.668528
ATT: Write Response (0x13) len 0
> HCI Event: Number of Completed Packets (0x13) plen 5 #84 [hci0] 13.748991
Num handles: 1
Handle: 68
Count: 1
The javascript console prints:
A new value was written: <Buffer 79 65 61 68>
javascript console
onPartialWrite true 0 ttttt onPartialWrite true 0 hhhh
btmon
` Bluetooth monitor ver 5.50 = Note: Linux version 4.19.104-300.el8.armv7hl (armv7l) 0.213955 = Note: Bluetooth subsystem version 2.22 0.213971 = New Index: AA:AA:AA:AA:AA:AA (Primary,UART,hci0) [hci0] 0.213973 = Open Index: AA:AA:AA:AA:AA:AA [hci0] 0.213974 = Index Info: AA:AA:AA:AA:AA:AA (Broadcom Corporation) [hci0] 0.213976 @ USER Open: node (privileged) version 2.22 {0x0001} [hci0] 0.213978 @ MGMT Open: btmon (privileged) version 1.14 {0x0002} 0.214094
ACL Data RX: Handle 64 flags 0x02 dlen 11 #1 [hci0] 9.140043 ATT: Write Request (0x12) len 6 Handle: 0x0010 Data: 68686868 < ACL Data TX: Handle 64 flags 0x00 dlen 5 #2 [hci0] 9.143117 ATT: Write Response (0x13) len 0 HCI Event: Number of Completed Packets (0x13) plen 5 #3 [hci0] 9.362093 Num handles: 1 Handle: 64 Count: 1
`
using centos 8 on raspberry, instaled in node_modules
"dependencies": { "ble-host": "^1.0.3", "hci-socket": "^1.0.0" }
sorry now it starts to working, really dont understand it is few hours i tested again and again and now i get response, the only think what i did was to start btmon
Note that, as written in the documentation at https://github.com/Emill/node-ble-host/blob/master/docs/api/gatt-server.md#characteristiconpartialwriteconnection-needsresponse-offset-value-callback, onPartialWrite overrides onWrite, so you should only have one of these two present in your code.
i know, but i tested before without partial, partial was just test if any write is made
Not sure but maybe if you have modified the gatt db your phone could potentially incorrectly have cached the old gatt db so it becomes out of sync and therefore writes could fail. Otherwise if you can reproduce the issue I would appreciate a full btmon log.
thanks, now it works
P.S.: is there an example how the communication architecture should be build if i need answer?
i sent some message, for example command to list some values, and i need the anser to get me the list which i want to render on phone
so i should note that i am waiting for list, and waiting for read callback? after i write command like LIST?
when i received callback value of list, so i delete that i am waiting for and can continue in communication?
A common approach is to use "Write Without Response" for the "commands" and then to use "Notifications" for delivering the response. Just make sure you have negotiated a large enough MTU so the response fits within the notification.