COMEDI_POLL(3)
NAME
comedi_poll - force updating of streaming buffer
SYNOPSIS
#include <comedilib.h> int comedi_poll (comedi_t * device, unsigned int subdevice);
DESCRIPTION
- The function comedi_poll() is used on a subdevice that has a Comedi
command in progress in order to update the streaming buffer. If supported by the driver, all available samples are copied to the streaming
buffer. These samples may be pending in DMA buffers or device FIFOs.
If sucessful, the number of additional bytes available is returned. If
there is an error, -1 is returned.