simplertk2blite-basic-starter-kit-ip67 gpx fix takes 1 to 3 minutes

Q&A forumCategory: Questionssimplertk2blite-basic-starter-kit-ip67 gpx fix takes 1 to 3 minutes
George3115 asked 2 months ago

Hello,
unfortunately the gps fix takes about 1 to 3 minutes. Sometimes even after 5 minutes there is no gps fix.It helps to disconnect the power and gps antenna from ardusimple.
Can anybody help me?
 
I use a Samsung S9 via bluetooh and Lefebure NTRIP Client.
Lefebure says:

Bluetooth Device Connected.
Waiting for GGA from Receiver.

 
ZED-F9P is at firmware FWVER=HPG.1.11
 
A Firmeware-Update to 1.12 fails, see below.
 
Thans for your help.
 

UBX_F9_100_HPG_112_ZED_F9P.a26bfd58dfd11c233f8fdba6b99adc5a.bin’ of receiver over ‘STDIO’
0.0 – Opening and buffering image file
0.0 – Verifying image
0.0 – image 0 size 654812
0.0 – image 1 size 411440
0.0 – config size 0
0.0 – Trying to open port STDIO
0.0 – Setting baudrate to 38400
1.2 – Retry poll
2.2 – Retry poll
3.2 – Retry poll
3.2 ERROR: Version poll failed.
3.2 Firmware Update FAILED

Firmware Update Utility has unexpectedly terminated
Exit code (2)

Ardusimple Staff replied 2 months ago

Dear George,
Can you return the simpleRTK2B to default (ubx-cfg-cfg “revert to default”). After that, connect to a PC with u-center. In open sky you should get a fix in 30 seconds.

4 Answers
George3115 answered 2 months ago

Thanks for the fast response. You are right. After revert to default fix is there in about 30 seconds. I need to set UBX- CFG (Config) – PRT (Ports)
Target 2- UART2
Protocol in and Protocol out to
0+1+5 – UBX+NEMEA+RTCM3
I commit that with Button “Send” and send in configuration “Save current configuration”. At the latest after 5 new start the fix needs more than 2 minutes. After 2 minutes I stopp the try. Maybe it won’t work at any waiting time.
Do you have any idea?

Ardusimple Staff replied 2 months ago

If you are only changing UART2 port config, I don’t see a reason for your described behavior.
Do you have good sky visibility or you are doing tests on the window? That would also explain 3-5 minutes.

George3115 answered 2 months ago

The last tests I Do was on the window. But I did all test on the window. Without the UART2 port config the fix is over and over again about 30 seconds even on the window.

Ardusimple Staff replied 2 months ago

George, we can’t imagine a reason why uart interface can affect performance… unless you are enabling too many messages and you are getting resets due to buffer overflow on that interface.

George3115 answered 2 months ago

As I wrote before I set to default. After I just change the UART-Configuration.
Does it makes sence to provide some logfiles or configuration files?
Should I ask my question at u-blox.com?

Ardusimple Staff replied 2 months ago

If you say you are in default, no need of configuration files.
A logfile can help, you can send it to info@ardusimple.com

Tests next to the window is not for RTK technology. RTK technology only works outdoor with perfect view of the sky.

George3115 answered 2 months ago

How can I generate logfiles? Which parameter do I have to set?

Ardusimple Staff replied 2 months ago

In u-center bar there is a “record” button, like in a VHS recorder. Then click eject after 4-5 minutes and the file will be finished.