[Paparazzi-devel] PPZ GPS board and U-Blox LEA-6 - cannot save configuration

[Greg Jones]

Hi

 

I have been trying to get the PPZ GPS board working - I have an LEA-6H module on the board. The PPZ board is of course the one here: http://paparazzi.enac.fr/wiki/GPS#Paparazzi_Stand-alone_GPS_Receivers

 

The module works fine - in that it can be configured as per the wiki instructions (e.g. 38400 baud, SBAS disabled, NAV5 set to airborne etc etc) using U-center.

 

However despite running through the correct procedure for saving the configuration via U-Center (UBX>CFG>CFG) and selecting various combinations I cannot get the settings to survice after cycling power to the GPS. It always comes back up running the ROM Defaults.

 

I notice that something called "Safeboot mode" appears to be active from looking at the U-Center messages windowsw under UBX>MON>HW. From what I can tell Safeboot basically means boot using factory settings ignoring flash and battery backed ran (BBR). Older U-Blox units had a PIN that you would connect to GND causing teh module to enter Safeboot mode at startup - I am wondering if this is somehow the problem.

 

I have contacted U-Blox support to ask them what could possibly cause the LEA-6H to start up in Safeboot.

 

So my question - Has anyone successfuly got the LEA-6H modules working properly on the PPZ GPS board? Specifically I am talking about the ability to save the configuration to flash.

 

I have been using a LEA-5H just fine with the same TWOG and everything there behaves as expected so I am convinced teh TWOG is not at fault here.

 

May be I just have a bad GPS board/module but that seems unlikely.

 

thanks