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pi@raspberrypi:~/zj-58 $ sudo python gv2_thermal_printer_config.py
Traceback (most recent call last):
File "/usr/local/lib/python3.9/dist-packages/serial/serialposix.py", line 398, in _reconfigure_port
orig_attr = termios.tcgetattr(self.fd)
termios.error: (5, 'Input/output error')
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/pi/zj-58/gv2_thermal_printer_config.py", line 12, in <module>
ser = serial.Serial(PORT, BAUD, timeout=0.5)
File "/usr/local/lib/python3.9/dist-packages/serial/serialutil.py", line 244, in __init__
self.open()
File "/usr/local/lib/python3.9/dist-packages/serial/serialposix.py", line 332, in open
self._reconfigure_port(force_update=True)
File "/usr/local/lib/python3.9/dist-packages/serial/serialposix.py", line 401, in _reconfigure_port
raise SerialException("Could not configure port: {}".format(msg))
serial.serialutil.SerialException: Could not configure port: (5, 'Input/output error')