My X-NUCLEO-GNSS1A1 do not have any response after changing the baud rate. How can I recovery it?

[CTam.1400]

My X-NUCLEO-GNSS1A1 does not have any response after changing the baud rate. How can I recover it?

I have write the following commands to change the baud rate:

​

$PSTMSETPAR,3102,0x5*66

$PSTMSAVEPAR*58

$PSTMSRR*49

​

After setting to it , if fail to have any UART output anymore. Only PPS have some changes every second.

I have tried to use Teseo-Suite Pro 's "STA808x/9x Firmware Upgrade", I select the options "Recovery" and the binary is downloaded from the official website, however the status is keeping at " Sync in progress".

How can I recover the board?

Thank you

[Francesco Virlinzi]

Hi

> $PSTMSETPAR,3102,0x5*66

Sorry but with that you are setting 9600... which is the default...

BTW assuming you did something like:

$PSTMSETPAR,3102,0xA

> After setting to it , if fail to have any UART output anymore.

With the script you changed the baudrate on the module...

But the STM32.UART port didn't change... and due to that you don't see any NMEA stream...

If you want change the module baudrate you have also to recompile the STM32 firmware to support an higher baudrate.

> I have tried to use Teseo-Suite Pro 's "STA808x/9x Firmware Upgrade", I select the options "Recovery" and the binary is downloaded from the official website, however the status is keeping at " Sync in progress".

1. Firmware from st.com: OK
2. Teseo-Suite Pro 's "STA808x/9x Firmware Upgrade: OK
3. Recovery: OK

You have to install in STM32 the correct STM32.Firmware (available in the Teseo Suite 5.2.3.4 online) in: Manu->Tool->X-Nucleo-GNSS1A1->STM32FirmwareUpgrade.

Just in case the STM32-FirmwareUpdate binary firmware for Nucleo-F401RE.

Hope this helps

Regards

Francesco

[CTam.1400]

Thank you.

I use this command changing the baud rate from 115200 to 9600.

Then, I try to check baud rate 9600 and 115200, but there are no any output in TX.

Writing other commands also does not have any response for baud rate 115200 or 9600. I also use oscilloscope to check TX pin and there is no any output at all.

I have tried to use Teseo-Suite Pro 's "STA808x/9x Firmware Upgrade", I select the options "Recovery" and the binary file is the file you provided, however the status is keeping at " Sync in progress". It cannot start the upgrade as below.

I also try different baud rate, it also doesn't work.

Do you have any idea how to recover the board ?

Thank you.

[Francesco Virlinzi]

>  " Sync in progress". It cannot start the upgrade as below

Without sync you can reset the Nucleo-F401 again

while in the setting:

1. Loader-Baudrate @ 115200 (mandatory)
2. Erase NVM enabled

Regards

Francesco