Help: GPS Problem

skybot

Hi,
I have parallax gps module and I tried to test it with GPSDemoV1.1.bs2.
It does not have·any errors·but I got only "?" which means signal is not valid.
If there is no reponse, it would get an error message.
I tried to get the signal in out side because I thought the receiver does get signal.
However, the result is same. I got only "?".
Do you have any idea for that?

sylvie369

There's a little red light on the side that blinks while it's looking for a signal, and glows steady when it has a signal. If yours is still blinking, that's why there's no data. If it's not blinking at all, you're hooked up wrong. If it's steady red, there's some other problem.

What's the light doing?

skybot

I think the code has some bugs.
There are many sub-rutines but not all of them works.
I just needed Get_Lat, Get_Long, Get_Alt, Get_Speed and Get_Head. So, I just modified the code a little and it works now.
I guess there are bugs on some of sub functions, Get_Info, Get_Valid, Get_Sats or Get_TimeDate.

sylvie369

Well, that code that you attached does have bugs in it - where did you get it from? The most glaring thing is that it looks like it's trying to communicate at 9600 baud: the Parallax GPS does 4800 baud.

The demo code on the product page works properly.