2024-01-10 02:12 PM
I have recently procured a X-NUCLEO-GNSS1A1 on its own. I would simply like to use the LIV3F to test the LNA/SAW filtering along with different antennas as well. I am able to connect the LIV3F to Teseo Suite via FTDI -> UART. I can see all of the satellites and NMEA data being streamed by the receiver, but I am unable to change any settings. I need to update a couple of settings, but the LIV3F is not detected, and it is shown in Teseo Suite as a 'generic' device, instead of a LIV3F, or LIV3FL, etc.
Any assistance would be much appreciated, I feel that I've exhausted every resource I have trying to change the settings. fwiw, I have a couple of custom PCBs with LIV3Fs installed on them, and I do not have this issue with those boards. Only the LIV3F on the X-NUCLEO-GNSS1A1.
Solved! Go to Solution.
2024-01-11 02:10 PM
Update: I was able to work around this problem by soldering directly to the RX pad of the LIV3F. I'm not sure what the issue was, but I was able to set the fix rate and baud rate with this method so I am pleased
2024-01-11 01:44 AM
Hi
I understood you are using the X-NUCLEO-GNSS1A1 directly with the FTDI UART2USB (at the end without any STM32 Host).
In this case I think the Level-shifter on the board are not correctly configured.
Could you test on teseo-Suite if using the command '$PSMTSRR' can reset the X-Nucleo board.
If not this means the LIV3F is not receiving the Input stream and due to that you can not change the configuration
Regards
Francesco
2024-01-11 01:47 AM - edited 2024-01-11 01:47 AM
This is the FTDI UART2USB connection you should use
Regards
Francesco
2024-01-11 08:37 AM - edited 2024-01-11 11:16 AM
Thank you for the help! I'm working through it but it is not working yet.
| Could you test on teseo-Suite if using the command '$PSMTSRR' can reset the X-Nucleo board
This command does not reset the X-Nucleo board. I have wired the FTDI's VCC to IOREF, 3v3, and RESET (D7), as you showed in the schematic, but I am still unable to transmit to the LIV3F.
I am including a picture of how I have the board wired, perhaps there is something noticeably wrong
2024-01-11 02:10 PM
Update: I was able to work around this problem by soldering directly to the RX pad of the LIV3F. I'm not sure what the issue was, but I was able to set the fix rate and baud rate with this method so I am pleased