App doesn't work with ublox LEA M8P

[kalon33]

Using a USB GPS module based on a ublox LEA M8P, I got the error "too many connection problems". GPS is working properly with u-center on Windows 10.

[kalon33]

[freshollie]

I see this device supports NMEA. Is it possible I could get a log? I have only been testing this on http://usglobalsat.com/p-688-bu-353-s4.aspx.

Do any other apps in the playstore work with this device?

[kalon33]

Yes, it supports NMEA, outputting various versions of it, currently set as 4.1 version. Do you want an NMEA output log? No, I couldn't find other app on the playstore working with USB devices, when this one is properly detecting the device and naming it. Ublox GPS chips works with three protocols: NMEA, proprietary UBX one, and another one (RTCM if I remember well). Here are protocol specs for mine, M8 series, which supports notably GPS, Glonass, Beidu and Galileo: https://www.u-blox.com/sites/default/files/products/documents/u-blox8-M8_ReceiverDescrProtSpec_(UBX-13003221)_Public.pdf

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----- Mail original ----- De: "Oliver Bell" <notifications@github.com> À: "freshollie/UsbGps4Droid" <UsbGps4Droid@noreply.github.com> Cc: "Nicolas Derive" <kalon33@ubuntu.com>, "Author" <author@noreply.github.com> Envoyé: Vendredi 25 Août 2017 10:33:43 Objet: Re: [freshollie/UsbGps4Droid] UsbGPS stopped: too many connection problems (#7) I see this device supports NMEA. Is it possible I could get a log? I have only been testing this on http://usglobalsat.com/p-688-bu-353-s4.aspx . Do any other apps in the playstore work with this device? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub , or mute the thread .

[freshollie]

For now I'm going to concede that I will not be able to make this device work due to it having a vast array of protocols which need to be selected and I have no way of testing.

If you want this app to work I suggest buying the GPS using I linked.

Other options are you edit the driver to work with your device and then send me a pull request once completed.

[kalon33]

I don't think they really need to be selected: by default, and if you don't have any manner to store parameters on the chip (flash or battery to keep RAM on when chip is not On), which is the majority of the devices I've seen, device outputs NMEA. That said, is that complex work to edit the driver to work with my device? If it is, I may have a look at sending a similar device to you to give you some way to test (if you want that? and have time to work on this).

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----- Mail original ----- De: "Oliver Bell" <notifications@github.com> À: "freshollie/UsbGps4Droid" <UsbGps4Droid@noreply.github.com> Cc: "Nicolas Derive" <kalon33@ubuntu.com>, "Author" <author@noreply.github.com> Envoyé: Vendredi 25 Août 2017 14:03:44 Objet: Re: [freshollie/UsbGps4Droid] UsbGPS stopped: too many connection problems (#7) For now I'm going to concede that I will not be able to make this device work due to it having a vast array of protocols which need to be selected and I have no way of testing. If you want this app to work I suggest buying the GPS using I linked. Other options are you edit the driver to work with your device and then send me a pull request once completed. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub , or mute the thread .

[freshollie]

I mean yeah I could probably edit the driver if I had the device, but editing a driver for a device which I don't own would be nearly impossible.

Can you send me the android log file after you get the too many connection problems?

That error is raised when the device is not outputting any info at all. All this service does is literally read the data output directly strings, and it sounds like your device is sending none (Possibly waiting for the correct start signal)

I don't want you to send me anything expensive as I have no guarantee of this working. Though if you are still serious about sending me a device to work with then that can be arranged.

[kalon33]

What kind of logfile do you need? adb logcat output? Anything else that would be useful for you? I will have a look to give you these over the weekend. Apparently this device is detected as a USB serial one (creates a COM port on Windows, and equivalent /dev/tty*** on Ubuntu Linux). If you think there's a way to get the device to work if you have it in hands, there's no problem for me to send mine or buy another one to send it to you. Supporting it would probably benefit to the community somehow so that's not wasted :)

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----- Mail original ----- De: "Oliver Bell" <notifications@github.com> À: "freshollie/UsbGps4Droid" <UsbGps4Droid@noreply.github.com> Cc: "Nicolas Derive" <kalon33@ubuntu.com>, "Author" <author@noreply.github.com> Envoyé: Vendredi 25 Août 2017 14:22:04 Objet: Re: [freshollie/UsbGps4Droid] UsbGPS stopped: too many connection problems (#7) I mean yeah I could probably edit the driver if I had the device, but editing a driver for a device which I don't own would be nearly impossible. Can you send me the android log file after you get the too many connection problems? That error is raised when the device is not outputting any info at all. All this service does is literally read the data output directly strings, and it sounds like your device is sending none (Possibly waiting for the correct start signal) I don't want you to send me anything expensive as I have no guarantee of this working. Though if you are still serious about sending me a device to work with then that can be arranged. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub , or mute the thread .

[freshollie]

Android has its own USB wrapper which doesn't require access to /dev/tty***. As this cannot be done without root. See https://developer.android.com/reference/android/hardware/usb/package-summary.html

The logcat would be perfect. I have several debug lines which I can read from the output and maybe understand the problem.

Can you cat /dev/tty*** on your computer with the devices plugged in and also send me the output?