VenusGPS programming

GPS/GNSS Development Boards
1

Hi guys,

I’m simply tryign to program my GPS, I have an accelerometer attached to the same logging board as the GPS and at the moment i get roughly 100 accelerometer readings to 1 GPS reading as the GPS only updates at 1 second while the accelerometer updates at every 10 milliseconds. I’ve decided to simply increase the BAUD rate of the GPS from default 9600 to 115200 and then change the update rate of GPS (as a higher update rate requires I higher baud rate).

So i’ve done my research into the GPS and found the code required etc which is basically just a binary format but i’m not having anyluck what so ever, has anyone else actually configured there GPS successfully yet?

2

I was able to configure the unit with a 5Hz update rate and 115200 baud using the GPS Viewer software so it can be done.

HTH,

gm

3

At present time, I’m trying to send the update through commands as I cannot connect it physically to the pc. It is running through a logging device that has the capabilities of sending out commands

4

I just sent the binary command using Realterm and it works. What is the exact string that you are sending?

5

I’ve tried these

  1. A0 A1 00 04 05 00 05 01 05 0D 0A (baud)

  2. A0 A1 00 03 0E 10 01 0F 0D 0A (sample)

6

It looks like your checksums are incorrect. You need to exclusive-or each byte in the payload. The baud rate message should be

A0 A1 00 04 05 00 05 01 01 0D 0A

I believe that you also have an additional error in the rate message where you have indicated an update rate of 16 (0x10) rather than an update rate of 10 (0x0A). The message should be

A0 A1 00 03 0E 0A 01 05 0D 0A

HTH,

gm