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+--- Thread: Serial can't find my devices (/showthread.php?tid=4194)
Serial can't find my devices - b135802 - 2022-08-25
Hello
I've installed OP V3 64 bit on a RPi 4, Settings v 3.4.4 and Serial 3.1.3. I got an usb gps dongle connected via an usb-hub, but Serial can't see it. I've tried to connect it directly to the RPi too, but Serial can't find it anyway.
I added a connection directly from Signal K, and there the gps dongle is listed and works fine when added. Still no sign of it in Serials...
(I got a keyboard, gsm-modem and a thumb drive connected to the usb hub too, and they work just fine).
Anyone got an idea of how to solve this?
Thanks
Andreas
RE: Serial can't find my devices - Sailoog - 2022-09-01
open a terminal and type
openplotter-serial
copy here any error you get in the terminal
RE: Serial can't find my devices - pacman - 2022-09-01
Maybe it is a bug because I have the same issue.
I just flashed a new sd card with the 64 bit openplotter 3 image and moved the card on the Raspi 4B 8G where Openplotter 2 is running fine.
The serial application doesn't show any serial device even if there are 7 USB converters connected.
See the attached screenshots:
- one from the openplotter 2 with the serial showing the adapters
- the other from openplotter 3 with dmesg showing the adapters and serial empty (even after refreshing it)
the hardware is the same in the two cases.
RE: Serial can't find my devices - Sailoog - 2022-09-02
OK let's see what is going on here. Please could both of you do this:
- Go to settings app and enable the debugging mode: https://openplotter.readthedocs.io/en/3.x.x/settings/settings_app.html#slbug-debugging
- Plug in your non detected devices.
- Open a terminal an type: openplotter-serial
- Report here the output of the terminal
Have you tried with OP3 32bit?
RE: Serial can't find my devices - pacman - 2022-09-02
I am interested to OP3 because it has the 64 bit OS, so it has no sense for me to try the 32 bit version.
I executed the requested steps and the result is:
wrong external apps format: unexpected EOF while parsing (<string>, line 0)
No module named 'openplotterMoitessier'
No module named 'openplotterMacarthur'
No module named 'openplotterOpenmarinebox'
No module named 'openplotterMaiana'
No module named 'openplotterSdrVhf'
No module named 'openplotterIot'
No module named 'openplotterNotifications'
No module named 'openplotterGpio'
No module named 'openplotterI2c'
No module named 'openplotterPypilot'
No module named 'openplotterAvnav'
No module named 'openplotterNetwork.serialPorts'
No module named 'openplotterDashboards.serialPorts'
as soon the command completed, inside the Serial GUI the connected devices showed up.
Looking forward to hearing from you.
Thanks
RE: Serial can't find my devices - Sailoog - 2022-09-02
(2022-09-02, 05:17 PM)pacman Wrote: as soon the command completed, inside the Serial GUI the connected devices showed up.
I am confused, so is the issue fixed? are you in 64bit or 32bit?
RE: Serial can't find my devices - pacman - 2022-09-02
(2022-09-02, 07:25 PM)Sailoog Wrote: I am confused, so is the issue fixed? are you in 64bit or 32bit?
I am on 64 bit.
After executing openplotter-serial I got the messages I sent and the serial GUI showed the devices.
After shutdown and restart, the serial GUI again showed no devices.
RE: Serial can't find my devices - SCarns - 2022-09-02
That’s interesting as I’m having a similar issue. I moved my VHF off USB and onto PiCAN-M serial port. It works fine, but after a reboot, SK looses its connection. I have to open serial, refresh the alias (by selecting it and hitting "Apply") and then the connection is made and everything is fine.
RE: Serial can't find my devices - Sailoog - 2022-09-04
I think we are mixing issues here.
b135802:
- any error in the terminal?
- Is Signal k detecting the gps when connected to through the hub?
- could you send an screenshot of the signal k serial connection settings for the detected gps?
pacman
OK, that is weird. These random effects usually mean power issues. Is your usb hub self powered?
- Try connection only 2 devices, set them in serial app and reboot several times.
- Try again with only 2 different devices.
If all your devices are detected when connected individually but it does not work when all are connected you will have the confirmation of a power issue.
SCarns
What "SK looses its connection" means? does the connection disappear from SK?
RE: Serial can't find my devices - pacman - 2022-09-04
(2022-09-04, 11:12 AM)Sailoog Wrote: I think we are mixing issues here.
....
pacman
OK, that is weird. These random effects usually mean power issues. Is your usb hub self powered?
- Try connection only 2 devices, set them in serial app and reboot several times.
- Try again with only 2 different devices.
If all your devices are detected when connected individually but it does not work when all are connected you will have the confirmation of a power issue.
Yes Sailoog, the hubs I am using are self powered.
Anyway the last test I made it was with only two devices connected with no hub, this excludes definitely a power issue.