comedi_get_read_subdevice — find streaming input subdevice


#include <comedilib.h>
int comedi_get_read_subdevice(comedi_t * device);


The function comedi_get_read_subdevice returns the index of the subdevice whose streaming input buffer is currently accessible through the device device, if there is one.

Return value

On success, comedi_get_read_subdevicereturns the index of the current read subdevice if there is one, or -1 if there is no read subdevice. On failure, -1 is returned.