Jakeler/ble-serial

Unexpected Error: No characteristic with ['notify', 'indicate'] property found!

kalstate opened this issue · 2 comments

kalstate commented

Describe the bug
Hello Jakeler,

Thanks for writing this code!

Issue: When I try connecting:

ble-serial -v -d 0F:82:5F:BF:B9:DE -w 13012f04-f8c3-4f4a-a8f4-15cd926da146 -r 13012f04-f8c3-4f4a-a8f4-15cd926da146

I get the following error:
Unexpected Error: No characteristic with ['notify', 'indicate'] property found!

In my arduino ino file, I've got:

#include <ArduinoBLE.h>
BLEService nanoService("13012f00-f8c3-4f4a-a8f4-15cd926da146");
BLEIntCharacteristic servoCharacteristic("13012f04-f8c3-4f4a-a8f4-15cd926da146");

I've tried a few different approaches, but this one seems closest:

Thanks,
Chris

Log messages

pi@raspberrypi:~ $ ble-serial -v -d 0F:82:5F:BF:B9:DE -w 13012f04-f8c3-4f4a-a8f4-15cd926da146 -r 13012f04-f8c3-4f4a-a8f4-15cd926da146
08:59:27.251 | DEBUG | main.py: Running: Namespace(adapter='hci0', addr_type='public', binlog=False, device='0F:82:5F:BF:B9:DE', filename=None, mode='rw', mtu=20, port='/tmp/ttyBLE', read_uuid='13012f04-f8c3-4f4a-a8f4-15cd926da146', timeout=5.0, verbose=True, write_uuid='13012f04-f8c3-4f4a-a8f4-15cd926da146')
08:59:27.252 | DEBUG | selector_events.py: Using selector: EpollSelector
08:59:27.254 | INFO | linux_pty.py: Slave created on /tmp/ttyBLE -> /dev/pts/1
08:59:27.254 | INFO | ble_interface.py: Receiver set up
08:59:27.270 | INFO | ble_interface.py: Trying to connect with 0F:82:5F:BF:B9:DE
08:59:28.323 | INFO | ble_interface.py: Device 0F:82:5F:BF:B9:DE connected
08:59:28.324 | DEBUG | ble_interface.py: Characteristic candidates for write: 
	13012f04-f8c3-4f4a-a8f4-15cd926da146 (Handle: 11): Unknown ['read', 'write']
08:59:28.325 | INFO | ble_interface.py: Found write characteristic 13012f04-f8c3-4f4a-a8f4-15cd926da146 (H. 11)
08:59:28.325 | DEBUG | ble_interface.py: Characteristic candidates for notify: 
	13012f04-f8c3-4f4a-a8f4-15cd926da146 (Handle: 11): Unknown ['read', 'write']
08:59:28.325 | ERROR | main.py: Unexpected Error: No characteristic with ['notify', 'indicate'] property found!
08:59:28.326 | WARNING | main.py: Shutdown initiated
08:59:28.327 | INFO | linux_pty.py: Serial reader and symlink removed
08:59:30.266 | WARNING | ble_interface.py: Device 0F:82:5F:BF:B9:DE disconnected
08:59:30.267 | DEBUG | main.py: Asyncio execption handler called 0F:82:5F:BF:B9:DE disconnected!
08:59:30.267 | INFO | linux_pty.py: Stopping serial event loop
08:59:30.267 | INFO | ble_interface.py: Stopping Bluetooth event loop
08:59:30.268 | INFO | ble_interface.py: Bluetooth disconnected
08:59:30.268 | INFO | main.py: Shutdown complete.

Setup (please complete the following information):

  • OS: raspberry pi
  • Bluetooth Hardware: arduino nano ble sense
  • BlueZ Version: bluetoothctl: 5.50
  • Python Version: Python 2.7.16
  • ble-serial and dependency versions:
  • pi@raspberrypi:~ $ pip list
    Package Version

arandr 0.1.9
asn1crypto 0.24.0
automationhat 0.2.0
blinker 1.4
blinkt 0.1.2
buttonshim 0.0.2
Cap1xxx 0.1.3
certifi 2018.8.24
chardet 3.0.4
Click 7.0
colorama 0.3.7
colorzero 1.1
configparser 3.5.0b2
cookies 2.2.1
cryptography 2.6.1
drumhat 0.1.0
entrypoints 0.3
enum34 1.1.6
envirophat 1.0.0
ExplorerHAT 0.4.2
Flask 1.0.2
fourletterphat 0.1.0
funcsigs 1.0.2
gpiozero 1.6.2
gyp 0.1
idna 2.6
ipaddress 1.0.17
itsdangerous 0.24
Jinja2 2.10
keyring 17.1.1
keyrings.alt 3.1.1
MarkupSafe 1.1.0
mcpi 0.1.1
microdotphat 0.2.1
mock 2.0.0
mote 0.0.4
motephat 0.0.3
numpy 1.16.2
oauthlib 2.1.0
olefile 0.46
pantilthat 0.0.7
pbr 4.2.0
phatbeat 0.1.1
pianohat 0.1.0
picamera 1.13
picraft 1.0
piglow 1.2.5
pigpio 1.78
Pillow 5.4.1
pip 18.1
pycairo 1.16.2
pycrypto 2.6.1
pyflakes 2.0.0
pygame 1.9.4.post1
PyGObject 3.30.4
pyinotify 0.9.6
PyJWT 1.7.0
pyOpenSSL 19.0.0
pyserial 3.4
pyxdg 0.25
rainbowhat 0.1.0
requests 2.21.0
requests-oauthlib 1.0.0
responses 0.9.0
RPi.GPIO 0.7.0
RTIMULib 7.2.1
scrollphat 0.0.7
scrollphathd 1.2.1
SecretStorage 2.3.1
sense-emu 1.1
sense-hat 2.2.0
setuptools 40.8.0
simplejson 3.16.0
six 1.12.0
skywriter 0.0.7
sn3218 1.2.7
spidev 3.5
touchphat 0.0.1
twython 3.7.0
unicornhathd 0.0.4
urllib3 1.24.1
Werkzeug 0.14.1
wheel 0.32.3

Jakeler commented

Hi @kalstate,
the log suggests that your servoCharacteristic has only ['read', 'write'] properties. It correctly starts the write module, but fails to setup the reader. ble-serial requieres the notify/indicate feature, to efficiently get informed when new data is available.
You just have to enable it in you Arduino code, like this:

BLEIntCharacteristic servoCharacteristic("13012f04-f8c3-4f4a-a8f4-15cd926da146", BLENotify | BLEWrite | BLERead);

See the Arduino reference doc. You can also check if it worked with ble-scan.

As a side note: Python Version 2.7 and your pip list can't be correct, you probably have to use python3/pip3 to get the relevant info.
But you obviously have a supported Python 3 interpreter installed, otherwise it would not work so far. So your Raspi installation should be fine if you adjust the Arduino code as described above.

  • 👍1
kalstate commented

Hi @kalstate,
the log suggests that your servoCharacteristic has only ['read', 'write'] properties. It correctly starts the write module, but fails to setup the reader. ble-serial requieres the notify/indicate feature, to efficiently get informed when new data is available.
You just have to enable it in you Arduino code, like this:

BLEIntCharacteristic servoCharacteristic("13012f04-f8c3-4f4a-a8f4-15cd926da146", BLENotify | BLEWrite | BLERead);

See the Arduino reference doc. You can also check if it worked with ble-scan.

As a side note: Python Version 2.7 and your pip list can't be correct, you probably have to use python3/pip3 to get the relevant info.
But you obviously have a supported Python 3 interpreter installed, otherwise it would not work so far. So your Raspi installation should be fine if you adjust the Arduino code as described above.

Connected! Thanks!