... comedi_loglevel -- change Comedilib logging properties . ... This function affects the output of debugging and error messages from Comedilib. By increasing the loglevel, additional debugging information will be printed. ... COMEDI_LOGLEVEL=0 Comedilib prints nothing. COMEDI_LOGLEVEL=1 (default) Comedilib prints error messages when there is a self-consistency error (i.e., an internal bug.) COMEDI_LOGLEVEL=2 Comedilib prints an error message when an invalid parameter is passed. ...