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.
28 October 2007