. Comedi Documentation . Prev . Next . comedi_get_n_channels -- number of subdevice channels . #include <comedilib.h> . int comedi_get_n_channels (comedi_t * device, unsigned int subdevice); . The function comedi_get_n_channels() returns the number of channels of the subdevice belonging to the comedi device device and having index subdevice. This function returns -1 on error and the Comedilib error value is set. Prev . Home . Next . comedi_get_subdevice_flags . Up . comedi_range_is_chan_specific