Lines Matching full:pps

2  * refclock_atom - clock driver for 1-pps signals
25  * This driver furnishes an interface for pulse-per-second (PPS) signals
34  * itself. There are two ways to connect the PPS signal, normally at TTL
38  * to connect the PPS signal directly to pin 10 (ACK) of a PC paralell
45  * the API with multiple PPS drivers and multiple handles per driver. If
58  * important difference. If this driver becomes the PPS driver according
63  * infrequent, but a reliable PPS signal, such as from an Ultra Stable
68  * The PPS timestamp is captured on the rising (assert) edge if flag2 is
70  * (default), the kernel PPS support is disabled; if lit it is enabled.
79 #define DEVICE		"/dev/pps%d" /* device name and unit */
81 #define	REFID		"PPS\0"	/* reference ID */
82 #define	DESCRIPTION	"PPS Clock Discipline" /* WRU */
85  * PPS unit control structure
140 	 * Open PPS device. This can be any serial or parallel port and