EGD_START(3) EEGDEV library manual EGD_START(3)
NAME
egd_start, egd_stop - start and stop buffered acquisition
SYNOPSIS
#include <eegdev.h>
int egd_start(struct eegdev* dev);
int egd_stop(struct eegdev* dev);
DESCRIPTION
egd_start() marks the beginning of buffered acquisition from the device referenced by dev. This means that the data starts getting accumu-
lated in an internal ringbuffer and this buffered data can be sequentially obtained by successive calls to egd_get_data(3). A buffered
acquisition started implies that the user has to get the data often enough to prevent the situation of a full ringbuffer.
egd_stop() halts the buffered acquisition of the device referenced by dev, relieving the user from the obligation to get data regularly.
RETURN VALUE
The function returns 0 in case of succes. Otherwise, -1 is returned and errno is set accordingly.
ERRORS
egd_start() and egd_stop() will fail if:
EINVAL dev is NULL.
SEE ALSO
egd_get_data(3), egd_get_available(3)
EPFL
2010 EGD_START(3)
