34 lines
975 B
Text
34 lines
975 B
Text
|
#
|
||
|
|
# PPS support configuration
|
||
|
|
#
|
||
|
|
|
||
|
|
menu "PPS support"
|
||
|
|
|
||
|
|
config PPS
|
||
|
|
tristate "PPS support"
|
||
|
|
depends on EXPERIMENTAL
|
||
|
|
---help---
|
||
|
|
PPS (Pulse Per Second) is a special pulse provided by some GPS
|
||
|
|
antennae. Userland can use it to get a high-precision time
|
||
|
|
reference.
|
||
|
|
|
||
|
|
Some antennae's PPS signals are connected with the CD (Carrier
|
||
|
|
Detect) pin of the serial line they use to communicate with the
|
||
|
|
host. In this case use the SERIAL_LINE client support.
|
||
|
|
|
||
|
|
Some antennae's PPS signals are connected with some special host
|
||
|
|
inputs so you have to enable the corresponding client support.
|
||
|
|
|
||
|
|
To compile this driver as a module, choose M here: the module
|
||
|
|
will be called pps_core.ko.
|
||
|
|
|
||
|
|
config PPS_DEBUG
|
||
|
|
bool "PPS debugging messages"
|
||
|
|
depends on PPS
|
||
|
|
help
|
||
|
|
Say Y here if you want the PPS support to produce a bunch of debug
|
||
|
|
messages to the system log. Select this if you are having a
|
||
|
|
problem with PPS support and want to see more of what is going on.
|
||
|
|
|
||
|
|
endmenu
|