Pulse-Per-Second PIN on GPS module

Archiver

Hello all,

I am new to electronics so pardon this elementary question.

I am trying to interface my Basic Stamp to a GPS module (LassenSQ)

From the datasheet, it has a total of 8 pins, 3 reserved,
TXD,RXD,GND,Vcc,battery backup and a Pulse per second pin.

I am ok with all but the last one. Pulse per second confuses me a bit.


I assume that I will use SHIFTIN to read data from this module...
but I am not sure how to connect it.
Will I be writing to PPS pin or reading from it?

Could I use SERIN?

Could you please direct me to some sort of a tutorial/example on this
topic?

Archiver

The PPS signal on a GPS is exactly what it sounds like - the unit will
output a short pulse every second once it aquires the a lock on the
satellites. You won't need the PPS signal for communication between
the GPS and the stamp.


--- In basicstamps@yahoogroups.com, "mirza_sejto" <mirza_sejto@y...>
wrote:
> Hello all,
>
> I am new to electronics so pardon this elementary question.
>
> I am trying to interface my Basic Stamp to a GPS module (LassenSQ)
>
> From the datasheet, it has a total of 8 pins, 3 reserved,
> TXD,RXD,GND,Vcc,battery backup and a Pulse per second pin.
>
> I am ok with all but the last one. Pulse per second confuses me a bit.
>
>
> I assume that I will use SHIFTIN to read data from this module...
> but I am not sure how to connect it.
> Will I be writing to PPS pin or reading from it?
>
> Could I use SERIN?
>
> Could you please direct me to some sort of a tutorial/example on this
> topic?