pylgbst on RPI3 with Raspbian stretch

[vwone]

Hi, Thank you for your great job and very usefull to learn python to children. Thank to S. Mack for "Lego boost roboter steuern mit python unter windows oder linux" (in german :( )

But would it be possible to do a tutorial for RPI3 dummy users like me please? I'm facing a lot of issues...

Let's start from the beginning. I'm using RPI3 (enhanced with bluetooth) under Raspbian stretch. I updated with : sudo apt-get update sudo apt-get upgrade -y

Next i failed to install gattlib: sudo pip install gattlib

Collecting gattlib Using cached https://files.pythonhosted.org/packages/be/2f/5b1aecec551b42b59d8b399ad444b5672972efb590ca83d784dbe616a3e1/gattlib-0.20150805.tar.gz Complete output from command python setup.py egg_info: Package glib-2.0 was not found in the pkg-config search path. Perhaps you should add the directory containing `glib-2.0.pc' to the PKG_CONFIG_PATH environment variable No package 'glib-2.0' found Traceback (most recent call last): File "", line 1, in File "/tmp/pip-build-RfY5iW/gattlib/setup.py", line 12, in "pkg-config --cflags glib-2.0".split()).decode('utf-8') File "/usr/lib/python2.7/subprocess.py", line 219, in check_output raise CalledProcessError(retcode, cmd, output=output) subprocess.CalledProcessError: Command '['pkg-config', '--cflags', 'glib-2.0']' returned non-zero exit status 1

----------------------------------------

Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-RfY5iW/gattlib/

This cmds didn't figure out the issue sudo apt-get install glib-2.0 sudo pip install --upgrade setuptools --user python

The next step succeeded pip install https://github.com/undera/pylgbst/archive/0.5.tar.gz

but it seems to be necessary to make a: git clone https://github.com/undera/pylgbst/ to run examples?

last step failed : python demo.py but of course => ImportError: No module named gattlib

thank's for your help.

[vwone]

It seems that dependencies are missing. Its advised to download and compile from source.

sudo apt-get install mercurial

hg clone https://bitbucket.org/OscarAcena/pygattlib

cd pygattlib

cat DEPENDS

Install all dependencies: sudo apt-get install libboost-thread-dev libboost-python-dev libbluetooth-dev libglib2.0-dev python-dev

now install gattlib like any other python module. sudo python setup.py install sudo pip install gattlib

Now: sudo python demo.py INFO:comms:Discovering devices using hci0... INFO:comms:Discovering devices using hci0... INFO:comms:Discovering devices using hci0... ...and so on

boost is not detected... however i can detect my lego boost: sudo bluetoothctl [NEW] Controller B8:27:EB:89:23:7E raspberrypi [default] [bluetooth]# agent on Agent registered [bluetooth]# default-agent Default agent request successful [bluetooth]# scan on Discovery started [CHG] Controller B8:27:EB:89:23:7E Discovering: yes [NEW] Device 2C:41:A1:13:41:2D LE-Bose Micro SoundLink [NEW] Device 5C:F9:38:B1:2C:7A 5C-F9-38-B1-2C-7A [NEW] Device 00:16:53:AF:85:B1 LEGO Move Hub

but this doesn't work sudo hcitool scan...nothing ?!

**sudo gatttool -b 00:16:53:AF:85:B1 -I**

[00:16:53:AF:85:B1][LE]> connect Attempting to connect to 00:16:53:AF:85:B1 Connection successful [00:16:53:AF:85:B1][LE]>quit

Please how to run demo.py? thanks

[undera]

Try to get more debug info by changing this line inside demo.py: logging.basicConfig(level=logging.INFO). Make it DEBUG instead of INFO.

Then, run it again, and share here the log you got.

[undera]

Also, this is perhaps duplicate of #7 , read there for possible hints

[vwone]

Hi, thank you very much

Here is my feedback #7 etc...

hcitool scan Scanning ... 78:BD:BC:62:48:C5 [TV] UE48JU6410 38:37:8B:4F:20:52 n/a D0:66:7B:2C:2C:AA DTVBluetooth but nothing about Lego MoveHub?!

hci0 seems up pi@raspberrypi:~ $ hciconfig -a hci0: Type: Primary Bus: UART BD Address: B8:27:EB:89:23:7E ACL MTU: 1021:8 SCO MTU: 64:1 UP RUNNING RX bytes:5417 acl:0 sco:0 events:97 errors:0 TX bytes:4388 acl:0 sco:0 commands:70 errors:0 Features: 0xbf 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 Link policy: RSWITCH SNIFF Link mode: SLAVE ACCEPT Name: 'raspberrypi' Class: 0x6c0000 Service Classes: Rendering, Capturing, Audio, Telephony Device Class: Miscellaneous, HCI Version: 4.1 (0x7) Revision: 0x168 LMP Version: 4.1 (0x7) Subversion: 0x2209 Manufacturer: Broadcom Corporation (15)

sudo hcitool lescan

LE Scan ... 00:16:53:AF:85:B1 (unknown) 00:16:53:AF:85:B1 LEGO Move Hub 7C:43:7C:36:47:D4 (unknown) 78:BD:BC:62:48:C5 [TV] UE48JU6410

In this case LEGO Move Hub is visible ?! I notice that [TV] UE48JU6410 is still visible contrary to the LEGO Move Hub ?!

sudo bluetoothctl [NEW] Controller B8:27:EB:89:23:7E raspberrypi [default] [NEW] Device 00:16:53:AF:85:B1 LEGO Move Hub [bluetooth]# [bluetooth]# power on Changing power on succeeded [bluetooth]# connect 00:16:53:AF:85:B1 Attempting to connect to 00:16:53:AF:85:B1 [CHG] Device 00:16:53:AF:85:B1 Connected: yes Connection successful [NEW] Primary Service /org/bluez/hci0/dev_00_16_53_AF_85_B1/service0001 00001801-0000-1000-8000-00805f9b34fb Generic Attribute Profile [NEW] Characteristic /org/bluez/hci0/dev_00_16_53_AF_85_B1/service0001/char0002 00002a05-0000-1000-8000-00805f9b34fb Service Changed [NEW] Descriptor /org/bluez/hci0/dev_00_16_53_AF_85_B1/service0001/char0002/desc0004 00002902-0000-1000-8000-00805f9b34fb Client Characteristic Configuration [NEW] Primary Service /org/bluez/hci0/dev_00_16_53_AF_85_B1/service000c 00001623-1212-efde-1623-785feabcd123 Vendor specific [NEW] Characteristic /org/bluez/hci0/dev_00_16_53_AF_85_B1/service000c/char000d 00001624-1212-efde-1623-785feabcd123 Vendor specific [NEW] Descriptor /org/bluez/hci0/dev_00_16_53_AF_85_B1/service000c/char000d/desc000f 00002902-0000-1000-8000-00805f9b34fb Client Characteristic Configuration [CHG] Device 00:16:53:AF:85:B1 ServicesResolved: yes [LEGO Move Hub]# [LEGO Move Hub]#

this time the connection succeeded on the first try. but i prevously enter in an another try: sudo bluetoothctl [bluetooth]# agent on [bluetooth]# default-agent [bluetooth]# scan on [bluetooth]# connect 00:16:53:AF:85:B1

then [LEGO Move Hub]# quit [DEL] Controller B8:27:EB:89:23:7E raspberrypi [default] [DEL] Primary Service /org/bluez/hci0/dev_00_16_53_AF_85_B1/service0001 00001801-0000-1000-8000-00805f9b34fb Generic Attribute Profile [DEL] Characteristic /org/bluez/hci0/dev_00_16_53_AF_85_B1/service0001/char0002 00002a05-0000-1000-8000-00805f9b34fb Service Changed [DEL] Descriptor /org/bluez/hci0/dev_00_16_53_AF_85_B1/service0001/char0002/desc0004 00002902-0000-1000-8000-00805f9b34fb Client Characteristic Configuration [DEL] Primary Service /org/bluez/hci0/dev_00_16_53_AF_85_B1/service000c 00001623-1212-efde-1623-785feabcd123 Vendor specific [DEL] Characteristic /org/bluez/hci0/dev_00_16_53_AF_85_B1/service000c/char000d 00001624-1212-efde-1623-785feabcd123 Vendor specific [DEL] Descriptor /org/bluez/hci0/dev_00_16_53_AF_85_B1/service000c/char000d/desc000f 00002902-0000-1000-8000-00805f9b34fb Client Characteristic Configuration

finally: sudo python demo.py INFO:comms:Discovering devices using hci0... INFO:comms:Discovering devices using hci0... INFO:comms:Discovering devices using hci0...

and here is the result of changing this line inside demo.py logging.basicConfig(level=logging.INFO) => logging.basicConfig(level=logging.DEBUG)

sudo python demo.py > out 2>&1

WARNING:root:Failed to use debug server: Traceback (most recent call last): File "demo.py", line 186, in connection = DebugServerConnection() File "/usr/local/lib/python2.7/dist-packages/pylgbst/comms.py", line 213, in init self.sock.connect(('localhost', port)) File "/usr/lib/python2.7/socket.py", line 228, in meth return getattr(self._sock,name)(*args) error: [Errno 111] Connection refused

INFO:comms:Discovering devices using hci0... DEBUG:comms:Devices: {} INFO:comms:Discovering devices using hci0... DEBUG:comms:Devices: {} ... Traceback (most recent call last): File "demo.py", line 189, in connection = BLEConnection().connect() File "/usr/local/lib/python2.7/dist-packages/pylgbst/comms.py", line 85, in connect devices = service.discover(1) KeyboardInterrupt

:( according to #1 it seems like that Rikponne and Atravert have succeeded connecting Boost with RPI 3 but I do not understand how.

Atravert : " (ii) patched the BLEConnection().connect() issue ??? I have used libbboost_python-3.5.so instead of the default (probably libbboost_python-3.4.so). ???"

All for this evening. Thanks.

[vwone]

Hi, I hope @atravert or @rikponne could have a suggestion? Thanks

[undera]

I have just released a big change with version 0.6. It allows you to use different backend libraries, not only gattlib. Can you please experiment with installing other libs and trying 4 available connection classes, possibly one of them will work for you?

[vwone]

pip uninstall pylgbst Uninstalling pylgbst-0.4: /home/pi/.local/lib/python2.7/site-packages/pylgbst-0.4.egg-info /home/pi/.local/lib/python2.7/site-packages/pylgbst/init.py /home/pi/.local/lib/python2.7/site-packages/pylgbst/init.pyc /home/pi/.local/lib/python2.7/site-packages/pylgbst/comms.py /home/pi/.local/lib/python2.7/site-packages/pylgbst/comms.pyc /home/pi/.local/lib/python2.7/site-packages/pylgbst/constants.py /home/pi/.local/lib/python2.7/site-packages/pylgbst/constants.pyc /home/pi/.local/lib/python2.7/site-packages/pylgbst/movehub.py /home/pi/.local/lib/python2.7/site-packages/pylgbst/movehub.pyc /home/pi/.local/lib/python2.7/site-packages/pylgbst/peripherals.py /home/pi/.local/lib/python2.7/site-packages/pylgbst/peripherals.pyc Proceed (y/n)? y Successfully uninstalled pylgbst-0.4

pip install https://github.com/undera/pylgbst/archive/0.6.tar.gz Collecting https://github.com/undera/pylgbst/archive/0.6.tar.gz Downloading https://github.com/undera/pylgbst/archive/0.6.tar.gz / 40kB 350kB/s Installing collected packages: pylgbst Running setup.py install for pylgbst ... done Successfully installed pylgbst-0.6

sudo python demo.py > out 2>&1

WARNING:root:Failed to use debug server: Traceback (most recent call last): File "demo.py", line 186, in connection = DebugServerConnection() File "/usr/local/lib/python2.7/dist-packages/pylgbst/comms.py", line 213, in init self.sock.connect(('localhost', port)) File "/usr/lib/python2.7/socket.py", line 228, in meth return getattr(self._sock,name)(*args) error: [Errno 111] Connection refused

INFO:comms:Discovering devices using hci0... DEBUG:comms:Devices: {} INFO:comms:Discovering devices using hci0... DEBUG:comms:Devices: {} Traceback (most recent call last): File "demo.py", line 189, in connection = BLEConnection().connect() File "/usr/local/lib/python2.7/dist-packages/pylgbst/comms.py", line 85, in connect devices = service.discover(1) KeyboardInterrupt

installing other libs and trying 4 available connection classes???

Retry #1 pip install gattlib Collecting gattlib Using cached https://files.pythonhosted.org/packages/be/2f/5b1aecec551b42b59d8b399ad444b5672972efb590ca83d784dbe616a3e1/gattlib-0.20150805.tar.gz Building wheels for collected packages: gattlib Running setup.py bdist_wheel for gattlib ... done Stored in directory: /home/pi/.cache/pip/wheels/a9/c7/5a/799e5065ceb9e39ed2be02f9899cdc84fbb32d5f54e0055838 Successfully built gattlib Installing collected packages: gattlib Successfully installed gattlib-0.20150805

Patched connection issue: hub=MoveHub(connection) => hub=MoveHub(BLEConnection().connect()) sudo python demo.py WARNING:root:Failed to use debug server: Traceback (most recent call last): File "demo.py", line 186, in connection = DebugServerConnection() File "/usr/local/lib/python2.7/dist-packages/pylgbst/comms.py", line 213, in init self.sock.connect(('localhost', port)) File "/usr/lib/python2.7/socket.py", line 228, in meth return getattr(self._sock,name)(*args) error: [Errno 111] Connection refused

INFO:comms:Discovering devices using hci0... DEBUG:comms:Devices: {} INFO:comms:Discovering devices using hci0... DEBUG:comms:Devices: {} INFO:comms:Discovering devices using hci0... Traceback (most recent call last): File "demo.py", line 189, in connection = BLEConnection().connect() File "/usr/local/lib/python2.7/dist-packages/pylgbst/comms.py", line 85, in connect devices = service.discover(1) KeyboardInterrupt

sudo pip install gatt Collecting gatt Downloading https://files.pythonhosted.org/packages/96/d0/d66154053d5b47996731d80ee66f65bdf7b790258addc0b6a5f50bcc3579/gatt-0.2.7.tar.gz Building wheels for collected packages: gatt Running setup.py bdist_wheel for gatt ... done Stored in directory: /root/.cache/pip/wheels/17/83/e3/72f896e9a4f0cd046ae413d4c6a1033e7d11b6adfed46fae78 Successfully built gatt Installing collected packages: gatt Successfully installed gatt-0.2.7

/pylgbst/tests $ sudo python test_gatt.py Traceback (most recent call last): File "test_gatt.py", line 7, in from pylgbst.comms_gatt import CustomDevice ImportError: No module named comms_gatt

sudo pip install comms_gatt Collecting comms_gatt Could not find a version that satisfies the requirement comms_gatt (from versions: ) No matching distribution found for comms_gatt

/pylgbst/tests $ sudo python test_movehub.py Traceback (most recent call last): File "test_movehub.py", line 6, in from tests import log, HubMock, ConnectionMock, Thread ImportError: No module named tests

/pylgbst/tests $ sudo python test_pygatt.py Traceback (most recent call last): File "test_pygatt.py", line 9, in from pylgbst.comms_pygatt import GattoolConnection ImportError: No module named comms_pygatt

/pylgbst/examples $ sudo python demo.py Traceback (most recent call last): File "demo.py", line 191, in connection = get_connection_auto() NameError: name 'get_connection_auto' is not defined

I wrote this : LegoBoost.py

from pylgbst import MoveHub
hub = MoveHub()
for device in hub.devices:
        print(device)

sudo python LegoBoost.py 1 2 50 55 56 57 58 59 60

so i continued with this code :

from pylgbst import MoveHub
from pylgbst.comms import BLEConnection
from time import sleep

hub = MoveHub(BLEConnection().connect())
sleep(60)

sudo python LegoBoost_2.py

connection succeeded for 60 [s]

It seems that i must have to learn python by stripping step by step all your code ... to be continued

[undera]

All your attempts look strange, looks like your installation did not upgrade somehow. THe thing is BLEConnection does not exist anymore, and demo.py has been updated to reflect that. from pylgbst import MoveHub can't work anymore, because you can only import from pylgbst.movehub import MoveHub.

This makes me think your pip install ... did not succeed...

[vwone]

back soon ;)

[vwone]

Hi,

Update bluetooth backend : pip install --upgrade pygatt gatt gattlib

remove previous pylgbst package pip unsinstall pylgbst

pip install https://github.com/undera/pylgbst/archive/0.8.tar.gz Collecting https://github.com/undera/pylgbst/archive/0.8.tar.gz Downloading https://github.com/undera/pylgbst/archive/0.8.tar.gz / 40kB 371kB/s Installing collected packages: pylgbst Running setup.py install for pylgbst ... done Successfully installed pylgbst-0.8

pip show pylgbst Name: pylgbst Version: 0.8 Summary: Python library to interact with LEGO Move Hub (from Lego BOOST set) Home-page: UNKNOWN Author: Andrey Pokhilko Author-email: apc4@ya.ru License: UNKNOWN Location: /home/pi/.local/lib/python2.7/site-packages Requires:

python demo.py Traceback (most recent call last): File "demo.py", line 5, in from pylgbst import * File "/home/pi/.local/lib/python2.7/site-packages/pylgbst/init.py", line 4, in from pylgbst.comms import DebugServer ImportError: No module named comms

sudo python demo.py Traceback (most recent call last): File "demo.py", line 191, in connection = get_connection_auto() NameError: name 'get_connection_auto' is not defined

[undera]

You need to import get_connection_auto() in your code to use it

[vwone]

so it seems that i must use sudo, on the other hand I do not understand why I have to modify your file "demo.py"? but I added this line to your own code "demo.py":

import time from time import sleep

from pylgbst import * from pylgbst import get_connection_auto from pylgbst.comms import DebugServerConnection from pylgbst.movehub import MoveHub, COLORS, COLOR_BLACK from pylgbst.peripherals import EncodedMotor, TiltSensor, Amperage, Voltage

and i got this result : Traceback (most recent call last): File "My_Demo.py", line 6, in from pylgbst import get_connection_auto ImportError: cannot import name get_connection_auto

[vwone]

I do not understand why i'm not able to run "demo.py" but in any case your next simplest example works very well on linux RPI3:

from pylgbst.movehub import MoveHub import time

hub = MoveHub()

hub.motor_A.timed(0.5, 0.8) hub.motor_A.timed(0.5, -0.8)

hub.motor_B.angled(90, 0.8) hub.motor_B.angled(-90, 0.8)

hub.motor_AB.timed(1.5, 0.8, -0.8) hub.motor_AB.angled(90, 0.8, -0.8)

hub.motor_external.constant(0.2) time.sleep(2) hub.motor_external.stop()

But failed on windows with BLED112: "No module named 'Pylgbst.comms' " ?! (seems like a privilege issue but works with MIT scratch...)

I think I'll have to study more carrefully your other examples, code and python to understand now ... thanks