brendan-w
No available ports
Trying to run Python-OBD on Raspberry Pi Zero 2W. Here's the code:
import sys sys.path.insert(0, '/home/gordona/my-venv/lib/python3.11/site-packages') import obd obd.logger.setLevel(obd.logging.DEBUG) ports = obd.scan_serial() print (ports) connection = obd.OBD() fast=False timeout=30 cmd = obd.commands.HYBRID_BATTERY_REMAINING response = connection.query(cmd) print (response.value)
Here's the output:
[] [obd.obd] ======================= python-OBD (v0.7.3) ======================= [obd.obd] Using scan_serial to select port [obd.obd] Available ports: [] [obd.obd] No OBD-II adapters found [obd.obd] Cannot load commands: No connection to car [obd.obd] =================================================================== [obd.obd] Query failed, no connection available
It looks like we're not finding any ports for the BLE connection? Any suggestions would be appreciated. Thx
I think you need to use these two commands, then restart and it will find ports. sudo usermod -a -G dialout $USER sudo usermod -a -G tty $USER
Thank your for the prompt response. Both commands ran successfully but no change in the out# ##put of my program. It still looks like obd.scan_serial is not finding any usable ports. I am getting some warnings that may be germaine. I apologize for not including them in the original post.
WARNING: Your /home/gordona/my-venv/lib/python3.11/site-packages/serial/__init__.py
is shadowing the library module 'serial'. Consider renaming or moving it!
WARNING: Your /home/gordona/my-venv/lib/python3.11/site-packages/typing_extensions.py is shadowing the library module 'typing_extensions'. Consider renaming or moving it!
WARNING: Your /home/gordona/my-venv/lib/python3.11/site-packages/platformdirs /__init__.py is shadowing the library module 'platformdirs'. Consider renaming
or moving it!
More information: I ran blue-serial and it was able to find the OBD device. Here's the output from the run:
Finished general BLE scan (my-venv) gordona@OBD:~/my-venv $ ble-serial -d 66:1e:87:01:93:ef 17:35:12.839 | INFO | linux_pty.py: Port endpoint created on /tmp/ttyBLE -> /dev/pts/1 17:35:12.840 | INFO | ble_client.py: Receiver set up 17:35:13.690 | INFO | ble_client.py: Trying to connect with 66:1E:87:01:93:EF: VEEPEAK 17:35:15.059 | INFO | ble_client.py: Device 66:1E:87:01:93:EF connected 17:35:15.061 | INFO | ble_client.py: Found write-without-response characteristic 0000fff2-0000-1000-8000-00805f9b34fb (H. 15) 17:35:15.063 | INFO | ble_client.py: Found notify characteristic 0000fff1-0000-1000-8000-00805f9b34fb (H. 17) 17:35:15.569 | INFO | main.py: Running main loop!
Does that help explain why obd.scan+serial() is not finding any ports ?
Thanks in advance for any insights
I just ran ble_serial, in my virtual environment, as part of a Python script and it found the ports and the OBD device. So it's able to run in the same environment that Python-OBD is having problems with. Any thoughts ??