F9P resetting about every minute

GPS/GNSS Development Boards
1

Setup. Windows 10 - used for autosteer on tractor ( AgOpenGPS) - F9P is probably 5 yrs old - powered by 3.3V 0n PCB - firmware 1.13 (recommended by AOG)

About every minute (?) my F9P does what I’m calling resetting. It causing the computer to sing the song of the USB being unplugged and the plugged back in. It is also visible when viewing the device manager. I’ve measure voltage at onboard battery and it is in the Millie volt rage. Could the be the cause? Any special tricks for replacement?

Thanks in advance

2

Most likely issues with connectors or power.

If you can see output via $GxTXT messages on UART1, these might indicate if the unit is faulting/abending, perhaps once it gets signal lock.

The way the firmware is signed, it’s unlikely to be corrupt and running, it would report failure immediately.

Would perhaps double check connectors and cables for USB.

Try connecting to a different PC/Laptop and see if the issues follow, or not.

3

I have connected to 3 different computers all act the same. The reset is occurring more in the line of 30 second now that I really pay attention.

The F9 is configured to communicate on UART 1 so I hooked up a USB to UART and here is a sample of “View - Text Console” that appears about every 30 sec.

19:28:33 $GNTXT,01,01,00,tsk sld wtchdg timeout short*44

19:28:33 $GNVTG,N*2E

19:28:33 $GNGGA,192833.30,0,00,99.99,*79

19:28:33 $GNVTG,N*2E

19:28:33 $GNGGA,192833.40,0,00,99.99,*7E

19:28:33 $GNVTG,N*2E

19:28:34 $GNGGA,192833.50,0,00,99.99,*7F

19:28:34 $GNVTG,N*2E

19:28:34 $GNGGA,192833.60,0,00,99.99,*7C

19:28:34 $GNVTG,N*2E

19:28:34 $GNGGA,192833.70,0,00,99.99,*7D

19:28:34 $GNVTG,N*2E

19:28:34 $GNGGA,192833.80,0,00,99.99,*72

19:28:34 $GNVTG,N*2E

19:28:34 $GNGGA,192833.90,0,00,99.99,*73

19:28:34 $GNVTG,N*2E

19:28:34 $GNGGA,192834.00,0,00,99.99,*7D

19:28:34 $GNVTG,N*2E

19:28:34 $GNGGA,192834.10,0,00,99.99,*7C

19:28:34 $GNVTG,N*2E

19:28:34 $GNGGA,192834.20,0,00,99.99,*7F

19:28:34 $GNTXT,01,01,02,u-blox AG - www.u-blox.com*4E

19:28:34 $GNTXT,01,01,02,HW UBX 9 00190000*12

19:28:34 $GNTXT,01,01,02,EXT CORE 1.00 (f10c36)*3E

19:28:34 $GNTXT,01,01,02,ROM BASE 0x118B2060*20

19:28:34 $GNTXT,01,01,02,FWVER=HPG 1.13*5C

19:28:34 $GNTXT,01,01,02,PROTVER=27.12*1E

19:28:34 $GNTXT,01,01,02,MOD=ZED-F9P*71

19:28:34 $GNTXT,01,01,02,GPS;GLO;GAL;BDS*77

19:28:34 $GNTXT,01,01,02,SBAS;QZSS*60

19:28:34 $GNTXT,01,01,02,ANTSUPERV=*22

19:28:34 $GNTXT,01,01,02,ANTSTATUS=DONTKNOW*2D

19:28:34 $GNTXT,01,01,02,PF=FFF79*30

19:28:34 $GNTXT,01,01,01,exception 0x00130405 has occurred*2D

19:28:34 $GNTXT,01,01,02,Starting GNSS*5A

19:28:34 $GNVTG,N*2E

19:28:34 $GNGGA,0,00,99.99,*56

19:28:34 $GNVTG,N*2E

19:28:34 $GNGGA,0,00,99.99,*56

19:28:34 $GNVTG,N*2E

19:28:34 $GNGGA,0,00,99.99,*56

This all looks like Greek to me!!!

4

Ok, so some exception / abend, have pushed into support channels for thoughts…

19:28:33 $GNTXT,01,01,00,tsk sld wtchdg timeout short*44

…

19:28:34 $GNTXT,01,01,01,exception 0x00130405 has occurred*2D

5

Ok, so made initial contact, probably be Monday before I get more answers, late Friday in the USA.

Anything going into UART2 in this configuration?

Anything else changed in the system at around the time this started occurring?

Behaviour change if you disconnect the antenna?

6

Anything going into UART2 in this configuration? (It’s set to - 115200 Baud - RTCM3 in and out - I believe that corrections are received on UART2)

Anything else changed in the system at around the time this started occurring? (No changes - Ii starnt started cutting out occasionally and then just Quit)

No changes to the antenna. (I’s a helical - if that helps)

I have done a reset as described here (https://www.ardusimple.com/simplertk2b-hack-3/) and then Reloaded the 1.13 Firmware and the config file.

7

I tried the reset options found on your github but they did nothing for me.

8

Ok, thanks for the additional info.

Is this a SparkFun board? Or AgOpen’s

A lot of boards use super-cap

9

It’s an AgOpen mod. There is only 1 small capacitor that is on the teensy 4.1 ethernet part. Communication is F9 to Teensy UART then Teensy to Computer UDP.

I’m impressed - Saturday response!! Thanks

10

More Info: Saturday I found info on a diff Ublox model with the same symptoms, it had to do with voltage.

I tried this with 3 diff computers powered by a USB to UART - USB to Arduino to F9 and finally 12v battery to Buck converter to 3.3v. Get the same rebooting on all attempts. 5V on the F9 appear not to work or is somehow disabled?

11

Unreliability of power would be my first guess, but something could also be damaged/broken.

The 3.3V rail would be where to look, perhaps 120-130mA in usage, plus whatever the antenna draws.

The C099-F9P evaluation boards were a bit marginal off the front USB on one of my HP Workstations, but those boards have a USB hub and WiFi module too. They provided a barrel connector for 7V / 9W type supplies.

Not got any more feed back from uBlox, although did push in the observations over the weekend.

12

Can someone from SparkFun Central Command ping me with regard to this issue. Thanks

13

Are you using the ArduSimple XBee sized modules, or the SparkFun boards?

14

Bad USB cable?

15

This is a sparksfun zed F9P SMA. Can’t be a bad USB cable because I don’t use one. Communication is done via UART1. I appreciate the thought :smiley:

16

About every minute (?) my F9P does what I’m calling resetting. It causing the computer to sing the song of the USB being unplugged and the plugged back in.

If it’s just serial you wouldn’t be getting the USB connect / disconnect sound. I’d look into whatever you have connected via USB to see if that’s causing issues.

It’s a little pricey but you could also try swapping in a new F9P just to see if things get better.

17

I did have a usb cable connected for a bit, thus the sound as you say. I have tried everything I can think of.

18

Hi rayjorgensen - u-blox may want to have a look at your board. Please start an RMA, and we’ll get you fixed up: https://www.sparkfun.com/returns

19

Done