Pmod GPS not working

[Abhinav Airan]

I am using a pmod GPS with a zybo z7-10 board. However, even after running the sample code for the GPS, nothing is being printed on the serial monitor. I'm not entirely sure whether I have connected the pmod right, since there are 6 pins on the GPS but 12 pins on the pmod port. Nowhere has anyone mentioned whether one should connect the pmod GPS on the top six pins or the bottom six pins. Am I doing something wrong here or is there some other problem? I have also attached a picture of my block diagram for reference.

[jpeyron]

Hi @Abhinav Airan,

I do not see any thing wrong with your block design. I believe that the Pmod GPS should be connected to the top row.  Do you have your serial terminal baud rate set to 115200? What OS are you using? Do you have the board files installed? 

thank you,

Jon

[Abhinav Airan]

20 hours ago, jpeyron said:

Hi @Abhinav Airan,

I do not see any thing wrong with your block design. I believe that the Pmod GPS should be connected to the top row.  Do you have your serial terminal baud rate set to 115200? What OS are you using? Do you have the board files installed? 

thank you,

Jon

@jpeyron I have set the baud rate to 115200 and I have installed the board files. I am using Windows 10. I tried printing the ping separately, but it gave a value of -1. Here's the code that I used to do this:

[jpeyron]

Hi @Abhinav Airan,

Are you in a building or outside when pinging? If you are in a building are you next to a window?

thank you,

Jon

[Abhinav Airan]

@jpeyron I tried it first inside a building, then on the roof. When I went outside the led on the pmod stopped blinking, however there was no change in the ping.

[Abhinav Airan]

@jpeyron, now I removed the if condition for printing in the example code and also printed the gps ping. This is what I'm getting (the data was taken on the terrace of a building) :

[jpeyron]

Hi @Abhinav Airan,

Please go on the roof where the led on the pmod stopped blinking and  print the  gps ping as you did above. You might be experiencing an issue with gps urban canyons.

thank you,

Jon

[Abhinav Airan]

@jpeyron, this is what I got:

[jpeyron]

Hi @Abhinav Airan,

What version of vivado are you using? Can you attach your project? Are you leaving J2 floating as discussed in the reference manual?

thank you,

Jon

[Abhinav Airan]

@jpeyron, I am using Vivado 2017.4. I have left J2 floating. Here's the link to my project: https://github.com/nachiketkarve/GPS_Test_7