cdev_input_available()

Read available data from a host device write it into the internal input buffer

Synopsis:

#include <qvm/cdev.h>

int cdev_input_available(struct cdev_state *cds)

Arguments:

cds: A pointer to a structure with the character device state (see cdev_state).

Description:

If you aren't providing your own buffer (see cdev_setup()), then you must call this function when handling the CDEV_INPUT_AVAILABLE_PULSE_CODE pulse.

Returns:

If the received data completely fills the buffer, 1 (one); if the data doesn't fill the buffer, 0 (zero); otherwise, a negative errno value.