Problem with UART Write

[deepen_solanki]

Hello. I am currently working with a GPS module and I need to write data to the GPS to change its update rate and I'm trying to do that using UART, as the GPS is sending data back through UART. Attached pictures shows the data I need to write and the code I tried. I cant seem to figure out why its not working. The array is of U8 type Hexadecimal. One of the NI help guides showed the same thing too.

http://digital.ni.com/public.nsf/allkb/6C24F2F07BC23BB78625722800710865

[PalanivelThiruvenkadam]

---

@deepen_solanki wrote:

Hello. I am currently working with a GPS module and I need to write data to the GPS to change its update rate and I'm trying to do that using UART, as the GPS is sending data back through UART. Attached pictures shows the data I need to write and the code I tried. I cant seem to figure out why its not working. The array is of U8 type Hexadecimal. One of the NI help guides showed the same thing too.

http://digital.ni.com/public.nsf/allkb/6C24F2F07BC23BB78625722800710865

---

Try to Re define your code, In such a way that it will initialize once and then Write data, then wait for sometime based on data availability or poll for Number of Bytes at Port if the Number of Bytes is Greater than 0, then Read

This is how you need to Frame a Driver

[PalanivelThiruvenkadam]

Make Sure you are calculating CRC and Appending with the data if Required

You can try communication in Hyperterminal or Putty Software before running in LabVIEW as a Debugging Technique

[deepen_solanki]

I figured it out. I was closing the NI Serial Visa and then re-opening it. That didnt work. I then changed it.

Thank you.

[PalanivelThiruvenkadam]

If you are done with your requirement you can mark as solution, it may be your own answer, so that other members wont be providing inputs