comedi_command — start streaming input/output
#include <comedilib.h>
int comedi_command( | comedi_t * device, |
comedi_cmd * command); |
The function comedi_command starts a streaming input
or output. The
command structure pointed to by command specifies
settings for the
acquisition. The command must be able to pass
comedi_command_test
with a return value of 0, or
comedi_command will fail.
For input subdevices, sample values are read using the
function read on the device file descriptor.
For output subdevices,
sample values are written using the function write.