Example not working

[labmaster]

When i try the example code (without any Modification) i only get the following error at the serial monitor:

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0030,len:1184 load:0x40078000,len:13232 load:0x40080400,len:3028 entry 0x400805e4 [ 287][E][Preferences.cpp:503] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND [ 287][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS [ 296][E][Preferences.cpp:503] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND [ 299][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS [ 807][E][Preferences.cpp:503] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND [ 807][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS [ 1311][E][Preferences.cpp:503] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND [ 1312][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS [ 1815][E][Preferences.cpp:503] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND [ 1816][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS [ 2319][E][Preferences.cpp:503] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND [ 2320][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS ...

Any Hint where to search ?

[iranl]

What exactly is not working?

These errors are expected when no pairing data is present.

Put the Nuki device in pairing mode and these errors will disappear.

[labmaster]

I have a Nuki 2.0 and a Nuki 3.0 but none of them "in binding" mode will change this behavior :-(

[iranl]

You should enable debug logging using the Arduino/ESP-IDF settings in whatever build system you are using to compile and define appropriate debug vars.

Might be better to start from a working implementation such as nuki hub (complex) or esphome_nuki_lock (basic)

[labmaster]

"nuki hub" is much too complex, would need me to strip down nearly all beside the NUKI plain connect part. "esphome_nuki_lock" is even a big framework (behind ESPHome) , that's why i directly choose NukiBleEsp32 as start for a own project. Just need some basic functions like lock, unlock, unlatch but have to merge it with another framework as soon as i got the nuki function itself running.

I simply downloaded the zip from here, extracted it, opened it in VSCode/PlatfomIO, build the example and uploaded it (to different ESP32 Wroom Boards with 4MB Flash) with the result i showed above.

As quickcheck i downloaded and build and uploaded "nuki hub" now only to check if the locks and the ESP32 Hardware is working as expected. It runs out of the box !!!

I never used debugging on a ESP32 (beside Serial) so no clue at the moment to to debug this problem. Not sure how to continue now.

[labmaster]

Here are two serial output snippets from debug build: (cut from long serial output)

Only difference: If the lock is in binding mode then it looks like this: (and 54:d2:72:f7:4b:e4 appears more often than if not in binding mode) ######################### I NimBLEScan: New advertiser: 54:d2:72:f7:4b:e4 I NimBLEAdvertisedDevice: No service data found D NimBLEScan: erase device: 54:d2:72:f7:4b:e4 #########################

If the lock is not in binding mode then it looks like that ######################### I NimBLEScan: New advertiser: 54:d2:72:f7:4b:e4 D NimBLEScan: erase device: 54:d2:72:f7:4b:e4 #########################

I marked the line with ** at the line end

1. snip ########################################### Nuki V2 was in bind mode: ... I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91 D NimBLEScan: erase device: 70:2a:d5:ff:9d:91 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa [457396][E][Preferences.cpp:526] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND [457407][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS I NimBLEScan: New advertiser: 68:52:c9:e0:fc:53 D NimBLEScan: erase device: 68:52:c9:e0:fc:53 [457423][D][NukiBle.cpp:136] pairNuki(): No nuki in pairing mode found [457429][D][NukiBle.cpp:141] pairNuki(): pairing result 0 I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 D NimBLEScan: erase device: cb:17:a6:a6:85:83 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa I NimBLEScan: New advertiser: 4b:cd:31:99:9a:24 D NimBLEScan: erase device: 4b:cd:31:99:9a:24 I NimBLEScan: New advertiser: 54:d2:72:f7:4b:e4 I NimBLEAdvertisedDevice: No service data found ** D NimBLEScan: erase device: 54:d2:72:f7:4b:e4 I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 D NimBLEScan: erase device: cb:17:a6:a6:85:83 I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: 68:52:c9:e0:fc:53 D NimBLEScan: erase device: 68:52:c9:e0:fc:53 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa I NimBLEScan: New advertiser: 54:d2:72:f7:4b:e4 I NimBLEAdvertisedDevice: No service data found ** D NimBLEScan: erase device: 54:d2:72:f7:4b:e4 I NimBLEScan: New advertiser: 4b:cd:31:99:9a:24 D NimBLEScan: erase device: 4b:cd:31:99:9a:24 I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91 D NimBLEScan: erase device: 70:2a:d5:ff:9d:91 I NimBLEScan: New advertiser: 59:cd:10:72:3c:ae D NimBLEScan: erase device: 59:cd:10:72:3c:ae I NimBLEScan: New advertiser: d4:9d:c0:bd:28:57 D NimBLEScan: erase device: d4:9d:c0:bd:28:57 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 D NimBLEScan: erase device: cb:17:a6:a6:85:83 I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: ee:a0:32:0f:fe:e5 D NimBLEScan: erase device: ee:a0:32:0f:fe:e5 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa [457935][E][Preferences.cpp:526] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND I NimBLEScan: New advertiser: 54:d2:72:f7:4b:e4 I NimBLEAdvertisedDevice: No service data found ** D NimBLEScan: erase device: 54:d2:72:f7:4b:e4 I NimBLEScan: New advertiser: d4:9d:c0:bd:28:57 D NimBLEScan: erase device: d4:9d:c0:bd:28:57 I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 D NimBLEScan: erase device: cb:17:a6:a6:85:83 I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91 D NimBLEScan: erase device: 70:2a:d5:ff:9d:91 [457985][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS [457992][D][NukiBle.cpp:136] pairNuki(): No nuki in pairing mode found [457998][D][NukiBle.cpp:141] pairNuki(): pairing result 0 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa I NimBLEScan: New advertiser: 4b:cd:31:99:9a:24 D NimBLEScan: erase device: 4b:cd:31:99:9a:24 I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: 59:cd:10:72:3c:ae D NimBLEScan: erase device: 59:cd:10:72:3c:ae I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 D NimBLEScan: erase device: cb:17:a6:a6:85:83 I NimBLEScan: New advertiser: d4:9d:c0:bd:28:57 D NimBLEScan: erase device: d4:9d:c0:bd:28:57 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91 D NimBLEScan: erase device: 70:2a:d5:ff:9d:91 I NimBLEScan: New advertiser: 54:d2:72:f7:4b:e4 I NimBLEAdvertisedDevice: No service data found ** D NimBLEScan: erase device: 54:d2:72:f7:4b:e4 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 ...

2. snip ########################################### Nuki V2 has left bind mode: ... I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91 D NimBLEScan: erase device: 70:2a:d5:ff:9d:91 I NimBLEScan: New advertiser: 59:cd:10:72:3c:ae D NimBLEScan: erase device: 59:cd:10:72:3c:ae I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 D NimBLEScan: erase device: cb:17:a6:a6:85:83 [550236][E][Preferences.cpp:526] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND [550244][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS I NimBLEScan: New advertiser: 4b:cd:31:99:9a:24 D NimBLEScan: erase device: 4b:cd:31:99:9a:24 [550260][D][NukiBle.cpp:136] pairNuki(): No nuki in pairing mode found [550266][D][NukiBle.cpp:141] pairNuki(): pairing result 0 I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91 D NimBLEScan: erase device: 70:2a:d5:ff:9d:91 I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 D NimBLEScan: erase device: cb:17:a6:a6:85:83 I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91 D NimBLEScan: erase device: 70:2a:d5:ff:9d:91 I NimBLEScan: New advertiser: 4b:cd:31:99:9a:24 D NimBLEScan: erase device: 4b:cd:31:99:9a:24 I NimBLEScan: New advertiser: d4:9d:c0:bd:28:57 D NimBLEScan: erase device: d4:9d:c0:bd:28:57 I NimBLEScan: New advertiser: ee:a0:32:0f:fe:e5 D NimBLEScan: erase device: ee:a0:32:0f:fe:e5 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91 D NimBLEScan: erase device: 70:2a:d5:ff:9d:91 I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: ee:a0:32:0f:fe:e5 D NimBLEScan: erase device: ee:a0:32:0f:fe:e5 I NimBLEScan: New advertiser: 68:52:c9:e0:fc:53 D NimBLEScan: erase device: 68:52:c9:e0:fc:53 I NimBLEScan: New advertiser: d4:9d:c0:bd:28:57 D NimBLEScan: erase device: d4:9d:c0:bd:28:57 I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 D NimBLEScan: erase device: cb:17:a6:a6:85:83 I NimBLEScan: New advertiser: 59:cd:10:72:3c:ae D NimBLEScan: erase device: 59:cd:10:72:3c:ae I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91 D NimBLEScan: erase device: 70:2a:d5:ff:9d:91 [550772][E][Preferences.cpp:526] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND [550782][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS I NimBLEScan: New advertiser: 4b:cd:31:99:9a:24 D NimBLEScan: erase device: 4b:cd:31:99:9a:24 [550798][D][NukiBle.cpp:136] pairNuki(): No nuki in pairing mode found [550804][D][NukiBle.cpp:141] pairNuki(): pairing result 0 I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: ee:a0:32:0f:fe:e5 D NimBLEScan: erase device: ee:a0:32:0f:fe:e5 I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 D NimBLEScan: erase device: cb:17:a6:a6:85:83 I NimBLEScan: New advertiser: 54:d2:72:f7:4b:e4 D NimBLEScan: erase device: 54:d2:72:f7:4b:e4 I NimBLEScan: New advertiser: 68:52:c9:e0:fc:53 D NimBLEScan: erase device: 68:52:c9:e0:fc:53 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa I NimBLEScan: New advertiser: 59:cd:10:72:3c:ae D NimBLEScan: erase device: 59:cd:10:72:3c:ae I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a D NimBLEScan: erase device: ca:9c:54:9d:a8:5a I NimBLEScan: New advertiser: 4b:cd:31:99:9a:24 D NimBLEScan: erase device: 4b:cd:31:99:9a:24 I NimBLEScan: New advertiser: 2f:d3:87:77:9f:aa D NimBLEScan: erase device: 2f:d3:87:77:9f:aa I NimBLEScan: New advertiser: cb:17:a6:a6:85:83 D NimBLEScan: erase device: cb:17:a6:a6:85:83 ...

[labmaster]

I now installed a fresh VSCode with fresh installed PlatformIO . Again downloaded "https://github.com/I-Connect/NukiBleEsp32/archive/refs/heads/main.zip" and built the example in debug mode. Result is the same This was my last hope that i had done something wrong :-(

[labmaster]

Below is a serial output from the powerup, a Nuki V3 was in bind mode, so the typical "NimBLEAdvertisedDevice: No service data found" was there. I marked it with "**" btw. 54:d2:72:4e:3c:dd is the correct address of the NUKi V3 Lock.

I tracked down the message "No service data found" in sourcecode "NimBLEAdvertisedDevice.cpp" there in ~line 345 at " if(bytes == uuidBytes && NimBLEUUID(field->value, bytes, false) == uuid) {" the comparison between "NimBLEUUID(field->value, bytes, false)" and "uuid" already fails on the first loop cycle. "bytes" and "uuidBytes" are "24" then

I still think that something is wrong or missing in the example code. Please Help

1. ##########################################
rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0030,len:4604
ho 0 tail 12 room 4
load:0x40078000,len:15468
load:0x40080400,len:4
ho 8 tail 4 room 4
load:0x40080404,len:3180
entry 0x400805b8
[     8][D][esp32-hal-cpu.c:264] setCpuFrequencyMhz(): PLL: 480 / 2 = 240 Mhz, APB: 80000000 Hz
=========== Before Setup Start ===========
Chip Info:
------------------------------------------
  Model             : ESP32
  Package           : D0WD-Q5
  Revision          : 100
  Cores             : 2
  CPU Frequency     : 240 MHz
  XTAL Frequency    : 40 MHz
  Features Bitfield : 0x00000032
  Embedded Flash    : No
  Embedded PSRAM    : No
  2.4GHz WiFi       : Yes
  Classic BT        : Yes
  BT Low Energy     : Yes
  IEEE 802.15.4     : No
------------------------------------------
INTERNAL Memory Info:
------------------------------------------
  Total Size        :   278744 B ( 272.2 KB)
  Free Bytes        :   247528 B ( 241.7 KB)
  Allocated Bytes   :    25736 B (  25.1 KB)
  Minimum Free Bytes:   242492 B ( 236.8 KB)
  Largest Free Block:   110580 B ( 108.0 KB)
------------------------------------------
Flash Info:
------------------------------------------
  Chip Size         :  4194304 B (4 MB)
  Block Size        :    65536 B (  64.0 KB)
  Sector Size       :     4096 B (   4.0 KB)
  Page Size         :      256 B (   0.2 KB)
  Bus Speed         : 40 MHz
  Bus Mode          : DIO
------------------------------------------
Partitions Info:
------------------------------------------
                nvs : addr: 0x00009000, size:    20.0 KB, type: DATA, subtype: NVS
            otadata : addr: 0x0000E000, size:     8.0 KB, type: DATA, subtype: OTA
               app0 : addr: 0x00010000, size:  1280.0 KB, type:  APP, subtype: OTA_0
               app1 : addr: 0x00150000, size:  1280.0 KB, type:  APP, subtype: OTA_1
             spiffs : addr: 0x00290000, size:  1408.0 KB, type: DATA, subtype: SPIFFS
           coredump : addr: 0x003F0000, size:    64.0 KB, type: DATA, subtype: COREDUMP
------------------------------------------
Software Info:
------------------------------------------
  Compile Date/Time : Sep 26 2024 03:20:02
  ESP-IDF Version   : v5.1.4-586-gb6b4727c58-dirty
  Arduino Version   : 3.0.4
------------------------------------------
Board Info:
------------------------------------------
  Arduino Board     : Espressif ESP-WROVER-KIT
  Arduino Variant   : esp32
  Core Debug Level  : 4
  Arduino Runs Core : 1
  Arduino Events on : 1
  CDC On Boot       : 0
============ Before Setup End ============
[   517][D][NukiSmartlockTest.h:177] setup(): Starting NUKI BLE...
I NimBLEDevice: BLE Host Task Started
I NimBLEDevice: NimBle host synced.
[  1790][E][Preferences.cpp:526] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND
[  1799][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS
=========== After Setup Start ============
INTERNAL Memory Info:
------------------------------------------
  Total Size        :   294192 B ( 287.3 KB)
  Free Bytes        :   226532 B ( 221.2 KB)
  Allocated Bytes   :    60576 B (  59.2 KB)
  Minimum Free Bytes:   226360 B ( 221.1 KB)
  Largest Free Block:   110580 B ( 108.0 KB)
------------------------------------------
GPIO Info:
------------------------------------------
  GPIO : BUS_TYPE[bus/unit][chan]
  --------------------------------------  
     1 : UART_TX[0]
     3 : UART_RX[0]
============ After Setup End =============
D NimBLEScan: >> start: duration=0
D NimBLEScan: << start()
[  2385][E][Preferences.cpp:526] getBytesLength(): nvs_get_blob len fail: bleAddress NOT_FOUND
[  2395][E][NukiBle.cpp:939] retrieveCredentials(): Error getting data from NVS
[  2403][D][NukiBle.cpp:136] pairNuki(): No nuki in pairing mode found
[  2409][D][NukiBle.cpp:141] pairNuki(): pairing result 0
I NimBLEScan: New advertiser: 61:27:2d:e6:22:f5
D NimBLEScan: erase device: 61:27:2d:e6:22:f5
I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a
D NimBLEScan: erase device: ca:9c:54:9d:a8:5a
I NimBLEScan: New advertiser: d4:9d:c0:bd:28:57
D NimBLEScan: erase device: d4:9d:c0:bd:28:57
I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91
D NimBLEScan: erase device: 70:2a:d5:ff:9d:91
I NimBLEScan: New advertiser: cb:17:a6:a6:85:83
D NimBLEScan: erase device: cb:17:a6:a6:85:83
I NimBLEScan: New advertiser: 7a:37:7c:96:60:8e
D NimBLEScan: erase device: 7a:37:7c:96:60:8e
I NimBLEScan: New advertiser: 58:1e:85:76:76:03
D NimBLEScan: erase device: 58:1e:85:76:76:03
I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a
D NimBLEScan: erase device: ca:9c:54:9d:a8:5a
I NimBLEScan: New advertiser: 54:d2:72:4e:3c:dd
I NimBLEAdvertisedDevice: No service data found  ******************
D NimBLEScan: erase device: 54:d2:72:4e:3c:dd
I NimBLEScan: New advertiser: 53:1e:0e:1f:01:f2
D NimBLEScan: erase device: 53:1e:0e:1f:01:f2
I NimBLEScan: New advertiser: cb:17:a6:a6:85:83
D NimBLEScan: erase device: cb:17:a6:a6:85:83
I NimBLEScan: New advertiser: 6b:ce:69:3e:48:6c
D NimBLEScan: erase device: 6b:ce:69:3e:48:6c
I NimBLEScan: New advertiser: 70:2a:d5:ff:9d:91
D NimBLEScan: erase device: 70:2a:d5:ff:9d:91
I NimBLEScan: New advertiser: ca:9c:54:9d:a8:5a
D NimBLEScan: erase device: ca:9c:54:9d:a8:5a
I NimBLEScan: New advertiser: 61:27:2d:e6:22:f5
D NimBLEScan: erase device: 61:27:2d:e6:22:f5

[labmaster]

Finally found this older issue ( https://github.com/I-Connect/NukiBleEsp32/issues/38 )

That gave the hint to a specific branch "pair-and-unpair-refactor" ( https://github.com/I-Connect/NukiBleEsp32/tree/pair-and-unpair-refactor )

I tried it and this one immediatly worked out of the box !!!

[labmaster]

Good NEWS !!!

by comparing
https://github.com/I-Connect/NukiBleEsp32/tree/pair-and-unpair-refactor with https://github.com/I-Connect/NukiBleEsp32/archive/refs/heads/main.zip

line by line and having a lot additional log outputs i tracked down the binding problem to only a couple of lines where the UUIDs are defined. Its all about NukiLock.cpp at the very beginning:

NukiLock::NukiLock(const std::string& deviceName, const uint32_t deviceId)
  : NukiBle(deviceName,
            deviceId,
            keyturnerPairingServiceUUID,
            keyturnerServiceUUID,
            keyturnerGdioUUID,
            keyturnerUserDataUUID,
            deviceName) {
    errorCode = (uint8_t)ErrorCode::ERROR_UNKNOWN;
}

If i change this to:

NukiLock::NukiLock(const std::string& deviceName, const uint32_t deviceId)
  : NukiBle(deviceName,
            deviceId,
            NimBLEUUID("a92ee100-5501-11e4-916c-0800200c9a66"),
            NimBLEUUID("a92ee200-5501-11e4-916c-0800200c9a66"),
            NimBLEUUID("a92ee101-5501-11e4-916c-0800200c9a66"),
            NimBLEUUID("a92ee202-5501-11e4-916c-0800200c9a66"),
            deviceName) {
    errorCode = (uint8_t)ErrorCode::ERROR_UNKNOWN;
}

then binding even works now in the "main" branch, no need to go for the "pair-and-unpair-refactor" anymore

Please note, both version will compile without errors, but with the not working one binding itself will not work at all, see my comments above. And i am aware that keyturnerPairingServiceUUID, keyturnerServiceUUID, keyturnerGdioUUID, keyturnerUserDataUUID are coming from NukiLockConstants.h as "const NimBLEUUID" type, so for me it's not quite clear why this will fail.

[technyon]

I have no explanation why this makes a difference, both should create identical NimBLEUUID objects. Could you add some debug output inside NukiBle.cpp for testing, to see if there's a difference. The NimBLEUUID class has a toString() method you can use. Both ways should have identical output.

[labmaster]

No, as far i could see, both create different NimBLEUUID objects.

I tried to output the UUID in a readable way, but .toString does not work for me, with it i only get non printable characters. So i have done my own conversion to format the data for outputting it as single chars and hex, byte by byte.

e.g. here is a byte by byte representation of pairingServiceUUID in NukiBle.cpp when using directly "NimBLEUUID("a92ee100-5501-11e4-916c-0800200c9a66")," at "NukiLock::NukiLock(const std::string& deviceName, const uint32_t deviceId)"

string: "a92ee100-5501-11e4-916c-0800200c9a66"
hex: 61 39 32 65 65 31 30 30 2d 35 35 30 31 2d 31 31 65 34 2d 39 31 36 63 2d 30 38 30 30 32 30 30 63 39 61 36 36

and here are when using "keyturnerPairingServiceUUID"

string: ""   (terminated without content as first char is a 0x00)
hex: 00 00 00 00 1a cc 39 98 00 92 6d 1d 0f 8b c7 ca 07 00 92 6d 00 cc 39 98 00 92 6d 1d 0f 8b c7 ca 64 3a fe 3f 

btw: not so easy to output long string directly in NukiBle.ccp over serial, as transmission often gets disrupted by other processes and so it partly outputs garbage.

[labmaster]

For a test i changed the following:

in Nukilock.cpp

NukiLock::NukiLock(const std::string& deviceName, const uint32_t deviceId, const NimBLEUUID PairingServiceUUID, const NimBLEUUID ServiceUUID, const NimBLEUUID GdioUUID, const NimBLEUUID UserDataUUID)
  : NukiBle(deviceName,
            deviceId,
            PairingServiceUUID,
            ServiceUUID,
            GdioUUID,
            UserDataUUID,
            deviceName) {
    errorCode = (uint8_t)ErrorCode::ERROR_UNKNOWN;
}

in Nukilock.h

NukiLock(const std::string& deviceName, const uint32_t deviceId, const NimBLEUUID PairingServiceUUID, const NimBLEUUID ServiceUUID, const NimBLEUUID GdioUUID, const NimBLEUUID UserDataUUID);

and in NukiSmartlockTest.h (-> main.cpp)

NukiLock::NukiLock nukiLock(deviceName, deviceId, NukiLock::keyturnerPairingServiceUUID, NukiLock::keyturnerServiceUUID, NukiLock::keyturnerGdioUUID, NukiLock::keyturnerUserDataUUID);

Even if this is not a real solution and only a prove of concept, it will work then.

For me it looks like as if at the time when the object NukiLock" is created from "NukiBle" ( see "NukiLock.cpp NukiLock.h") the NimBLEUUID object with the constant UUIDs are not already evaluated.

[technyon]

Strange, I can't really make sense of it, I'll have to think about it.