U center and Neo M9N conectivity

GPS/GNSS
1

I am having trouble updating my Neo M9N module with U-center app. Is there a reset or a way to start over with a generic setup?

2

Sorry the question is a bit incoherent.. can you provide some more context.

What have you done to it?
What do you want to do?
What version of uCenter are you using?
You want to Upgrade the Firmware?
You want to Reset to Defaults?

There’s a SAFEBOOT pin on the module, and -SAFE line on the SparkFun board, with this pulled low, I think it should allow connectivity to the UART at 9600 baud.

The UBX-CFG-CFG command can be used to reset to defaults. Which should be 38400 baud on the UART, with NMEA output.

1 Like
3

Answers: 1)what I have done to the module is to try to set it up. 2) I want to setup the module so I can work with it. 3) U-center V22.07 4) I tried to upgrade but no change. 5) I tried the reset but no change.
I have other GPS modules. The module that is working for me is your SAM M8Q.
I can setup it up with a USB to TTL adapter this way.

  1. connect 3 volts on adapter to the 3v3 pin on the module. 2) connect the gnd on adapter to gnd on module. 3) connect Tx no adapter to the Rx on the module. 4)
    connect Rx on adapter to the Tx on the module. 5) install u-center app. 6) Connect SAM M8Q module through the adapter to the USB port on computer. 7) Open receiver option on u-center and set baud to 9600 and select the correct port number. NOTE: just by performing the above procedure I can open a packet console and see data scrolling through the window ( It keeps scrolling with GPS data.
    I never see the scrolling with the M9N module but the blue led does blink but again no output GPS data. HELP
4

You have this board, or something else?

The USB should work independent of baud rate.
The UART1 RX/TX defaults to 38400 baud.
The board has a 5V regulator, will run the NEO at 3.3V

Get a scope on the TX pin

5

As far as I know, you can reset your u-blox NEO-M9N module to factory defaults using u-center.

6

Thank you for responding to my problem. I performed the SAFEBOOT pin on the module, I also tried the UBX-CFG-CFG command in u-center and no help. The version of u-center is v22.07. I want to get the M9N GPS to work! with an output. I suppose my module is beyond repair?

7

Hi @rayb1 ,

Please have a read through the post linked below. Please try following those steps to reset your board. BUT, please make sure you select 38400 baud - not 9600 baud.

I hope this helps,
Paul

8

Thank you Paul for your interest with my M9N GPS issue. I tried the reset procedure 3 times with no results. The power LED is the only thing that seems to work. I do get some noise and this is when I select view, messages, select UBX, right click and select enable child messages, then you see a burst but then it stops. I was hoping the safeboot would fix my M9N module.

9

Hi @rayb1 ,

“noise” is usually due to the baud rate not being set correctly. Please check you had the COM port set to 38400 baud:

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Please post a screenshot of the “noise”. A screenshot of the Binary Console window would also help us diagnose the problem.

Best wishes,
Paul