Platinum GPS, HW design and description
« on: May 06, 2018, 06:05:01 pm »
Hi All,

Three questions:
1. Does someone have schematic of this board? (like those in librepilot/hardware/)
2. Could someone explain the difference between these ports:
  • GPS+MCU
  • GPS only
3. Is this a tiny battery near ublox component?

See attachments.

mr_w

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    • LibrePilot
Re: Platinum GPS, HW design and description
« Reply #1 on: May 06, 2018, 06:08:38 pm »
Schematics

Re: Platinum GPS, HW design and description
« Reply #2 on: May 06, 2018, 06:19:48 pm »
Thanks!

Re: Platinum GPS, HW design and description
« Reply #3 on: May 06, 2018, 06:20:19 pm »
"GPS Only" is just that.  It works if the GPS works and still works even if the MCU (CPU) is not working.

"GPS+MCU" has the same GPS data as "GPS Only" plus mag data.  It only works if the MCU is working.  This is the connector you want to connect to.

Do not use the SWD debug port or you may damage something since it's power pinout is different.

That is not a tiny battery.  It is a large capacitor which acts like a battery and keeps recent gps almanac data for several hours.  You should really let the GPS gather almanac data for 12 minutes before the first flight of the day, but you can fly more quickly (say a couple minutes) the rest of the day.  Do as I say, not as I do.  :)
« Last Edit: May 06, 2018, 06:24:20 pm by TheOtherCliff »

Re: Platinum GPS, HW design and description
« Reply #4 on: May 06, 2018, 06:38:01 pm »
Thanks guys!  :)

TheOtherCliff, how can I update fw for this board? As I can see there was some changes in source code after 2015

Re: Platinum GPS, HW design and description
« Reply #5 on: May 06, 2018, 07:21:46 pm »
If you build from source code there is a tool to do that.
    make uploader
I think.

karla

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Re: Platinum GPS, HW design and description
« Reply #6 on: May 07, 2018, 04:46:08 am »
TheOtherCliff, how can I update fw for this board? As I can see there was some changes in source code after 2015

Here is some info on where to find it and how to use the uploader.
https://forum.librepilot.org/index.php?topic=2780.msg19378#msg19378

Here is a another thread how to upgrade it on a mac.
https://forum.librepilot.org/index.php?topic=2903.msg20373#msg20373

Hope it helps.

Re: Platinum GPS, HW design and description
« Reply #7 on: May 09, 2018, 08:27:37 pm »
My GPSv9 has fw version 'rel-14.10'. I'm using ComBridge (don't have FTDI)
Trying to update with UploaderTool but see an error "Could not enter DFU mode". What could be the reason?

$ sudo ./build/uploader_release/UploadTool -p ./build/firmware/fw_gpsplatinum/fw_gpsplatinum.opfw -t ttyACM0
Serial firmware uploader tool.
Connect the board
Connect the board [==================================================] 100%     
Connect the board NOW
Could not enter DFU mode


Another question:
There is tree leds: MCU, POWER and GPS.
Power led is always off. Is it normal?

Re: Platinum GPS, HW design and description
« Reply #8 on: May 09, 2018, 08:55:30 pm »
Thanks all!

Just now I was able to update it successfully  :)