Cumulus Support

Posted: **Wed 03 Jun 2015 9:52 am**

Hello
I had a private message from a Forum Member who's not able to write in english and asking quesiotns, so I am writing in his name. He is having a Davis Weatherstation, CumulusMX and a Raspberry PI
I finally pointed him to pull the Diags file and here is the error message he get:

Code: Select all

2015-06-02 00:42:03.475 Station type = Davis
2015-06-02 00:42:03.476 LOOP2 enabled
2015-06-02 00:42:03.477 Serial device = /dev/ttyUSB1
2015-06-02 00:42:03.505 No such file or directory
2015-06-02 00:42:03.507 Not Connected
2015-06-02 00:42:04.156 625 web tags initialised
2015-06-02 00:42:04.229 HTML root path = /home/daz/CumulusMX/interface
2015-06-02 00:42:05.175 Starting web socket server on port 8002
2015-06-02 00:42:12.020 Updating station settings
2015-06-02 00:42:12.145 Writing Cumulus.ini file
2015-06-02 00:42:30.230 Cumulus closing
2015-06-02 00:42:30.230 Writing Cumulus.ini file
2015-06-02 00:42:30.543 Closing connection
2015-06-02 00:42:30.548 Station stopped
2015-06-02 00:42:30.549 No data read this session, today.ini not written
System.IO.IOException: Bad file descriptor
at System.IO.Ports.SerialPortStream.ThrowIOException () [0x00000] in <filename unknown>:0 
at System.IO.Ports.SerialPortStream.Dispose (Boolean disposing) [0x00000] in <filename unknown>:0 
at System.IO.Ports.SerialPortStream.Finalize () [0x00000] in <filename unknown>:0

As far as I can see, CumulusMX is not finding the Weatherstation, right?
Can anybody advice? Sorry for asking such kind of questions, but since I have no access to the hardware, I am out of ideas

Posted: **Wed 03 Jun 2015 10:04 am**

Yes, looks like /dev/ttyUSB1 is not the correct device. If he looks at the output from dmesg, he should see something like this:

[4293933.836731] usb 1-1.2: New USB device found, idVendor=10c4, idProduct=ea60
[4293933.836755] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[4293933.836773] usb 1-1.2: Product: CP2101 USB to UART Bridge Controller
[4293933.836790] usb 1-1.2: Manufacturer: Silicon Labs
[4293933.836806] usb 1-1.2: SerialNumber: 0001
[4293933.840115] cp210x 1-1.2:1.0: cp210x converter detected
[4293933.841776] usb 1-1.2: cp210x converter now attached to ttyUSB0

Posted: **Wed 03 Jun 2015 10:59 am**

steve wrote:Yes, looks like /dev/ttyUSB1 is not the correct device

now....when you are poining it again, I am seeing the possible problem. Why is it USB1 instead of USB0?
I will ask him for a dmesg.
Thank you so much, steve

Posted: **Wed 03 Jun 2015 11:10 am**

It can change, and I've had this issue myself, see https://cumulus.hosiene.co.uk/viewtopic.php?f=27&t=13704

I haven't tried the solution mentioned by laulau in that thread yet, it's been behaving itself since I posted about it.

Posted: **Wed 03 Jun 2015 5:01 pm**

Hi Steve, his dmesg output is reporting this as his device

[ 6.935049] usb 1-1.3: FTDI USB Serial Device converter now attached to ttyUS

so I assume, he needs to configure this in his Setitngs:

/dev/ttyUS Whatever this is

and hopefully, this device will not change as you mentioned in your last post....but based on the fact, that this device does not have numbers at the end, I asusme, it will not change

Posted: **Wed 03 Jun 2015 5:08 pm**

That looks like it's truncated to me. "ls -al /dev/ttyUS*" should show what the actual devices are.

Posted: **Wed 03 Jun 2015 8:03 pm**

steve wrote:That looks like it's truncated to me. "ls -al /dev/ttyUS*" should show what the actual devices are.

Yes, I fear that and I already asked him for the ls command, but unfortunately he did not answered yet, but came up with the next question......

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