UnicodeDecodeError when connecting to ELM327 OBD2 USB interface

[dieterbauwens]

When connecting an ELM327 OBDII interface, a UnicodeDecodeError occurs in obd\elm327.py, line 465, in __read string = buffer.decode()

This is fixed by changing line 465 in obd\elm327.py to:

string = buffer.decode("utf-8", "ignore")

Afterwards, the OBDII interface continues to work fine.

Could this change be applied to the trunk?

Anyway, thank you for this great library, nice piece of work! Cheers, Dieter

Details:

Observed on OS: Mac OS Sierra 10.12.6, Windows 7 OBD interface: ELM327 OBD2 USB interface (CAN-BUS) (https://obdwarenhuis.nl/obd-kabels/interfaces/obd-2-usb-interface-can-bus)

import obd from obd import OBDStatus from time import sleep obd.logger.setLevel(obd.logging.DEBUG) connection = obd.OBD('COM5', baudrate=38400, protocol=None, fast=True)

Error trace: [obd.obd] ======================= python-OBD (v0.6.1) ======================= [obd.obd] Explicit port defined [obd.elm327] Initializing ELM327: PORT=COM5 BAUD=38400 PROTOCOL=auto [obd.elm327] write: b'ATZ\r\n' [obd.elm327] wait: 1 seconds Traceback (most recent call last): File "obd-test.py", line 3, in connection = obd.OBD("COM5", baudrate=38400, protocol=None, fast=True) File "C:\apps\Python36-32\lib\site-packages\obd\obd.py", line 58, in init self.connect(portstr, baudrate, protocol) # initialize by connecting and loading sensors File "C:\apps\Python36-32\lib\site-packages\obd\obd.py", line 85, in connect self.interface = ELM327(portstr, baudrate, protocol) File "C:\apps\Python36-32\lib\site-packages\obd\elm327.py", line 143, in init self.send(b"ATZ", delay=1) # wait 1 second for ELM to initialize File "C:\apps\Python36-32\lib\site-packages\obd\elm327.py", line 408, in send return self.read() File "C:\apps\Python36-32\lib\site-packages\obd\elm327.py", line 465, in read string = buffer.decode() UnicodeDecodeError: 'utf-8' codec can't decode byte 0xfc in position 4: invalid start byte

[nicojanssens]

+1

[andythomnz]

+1 I had the same problem, this fixed it. Thanks!

[dPeS]

+1 here