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Serial connection not possible, not detected

  • B

    @Matthew-Hiebert There's a few possibilities. It could be that the driver on your Windows machine is malfunctioning. You can try uninstalling the USB-to-Serial driver and reinstalling it again. It could also be that the Expansion dock is broken. Can you try if you can get the dock to work by reinstalling the driver?

    0 M 1 Reply
  • M

    @Boken-Lin I did that on all of the systems, three of them. Two windows 10 and one windows 8.1 workstation.

    0 B 1 Reply
  • R

    I have the same problem. I also have developed with Silabs CP210x chip and that device has no problems connecting to my PCs (Win10 & WinXP), the systems just don't recognize the device, my own device is recognized instantly . Something is wrong here.

    0
  • B

    @Matthew-Hiebert @Robert-Stewart Can both of you send me a clouse-up of the front and back side of your docks? I want to determine if this is caused by a loose solder or something.

    0
  • R

    MiniDockTop.jpg DockBottom.jpg

    Images of Mini Dock with Silabs chip.
    I have Arduino Dock as well, however this board doesn't have SiLabs chip

    0 B 1 Reply
  • B

    Hi @Robert-Stewart, I'm not able to see anything wrong with the board itself. The only solution I can think of right now is to send you another mini dock for you to try out. Can you confirm that your address has not changed from the previous shipment?

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  • R

    Thanks, the address is the same. I have since tried another device which is simply a USB to serial board using the same chip you are and that works fine. So it appears as you say it is a hardware fault, however everything else works.

    0 B 1 Reply
  • B

    @Robert-Stewart Ok, I have submitted a request to have it sent šŸ™‚

    0
  • S

    I recently needed to use the serial. Previously in came up in windows as an unrecognizable device. I have since changed the USB cable and it worked. The USB cable I had was a cheapy and stopped being able to charge my phone (with a lightning adapter). It still powered fine.

    Might be worth changing cables first

    1 M 1 Reply
  • M

    @Sawyer-McBride is a scholar of high order. So elementary I never even considered it. With an alternate cable, the device manager successfully reported the mini dock as a serial COM port of which I can connect with my terminal client. Will test on my other computers and report back.

    1 S 1 Reply
  • S

    @Matthew-Hiebert glad to be of service fine sir!

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  • B

    For anyone else running into this problem, I was using this on an Ubuntu 14.04 system (stock cp210x driver). The serial port was flaky, meaning I would get part of the kernel log, then the serial messages would stop. It might or might not come back if I reset the Omega. I tried other USB ports and several different cables as well.

    I changed to another machine and everything worked fine (meaning reliably). Morale of the story: if you're seeing weird USB/serial behavior, try using another PC.

    Also, I tried connecting it through a USB hub and Linux didn't see the USB-serial anymore. If you're trying it in a hub and it's not working, try skipping the hub.

    Hope that helps a random Internet passerby!

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  • S

    Just tried the expansion dock I just received and having the same issue as above on win 10. I'll try on another pc. But I did try a variety of cables and USB ports.

    This is concerning as you have to use serial to reconfigure WiFi. Unlike the particle.io boards that have a hard button for resting just WiFi

    0 B 1 Reply
  • B

    Hi @Shai-Perednik, I just want to check back with you to see if had any luck connecting the the serial terminal using another PC? Please let us know. Hopefully we can figure out the reason why it's not getting detected and get it fixed. You are absolutely right, having a hard line is very important when configuration via WiFi doesn't behave.

    Cheers.

    0
  • R

    Hi @Boken-Lin ,

    I tried out the two omegas that I had for the first time, unfortunately both won't work.

    AP is advertised, but can't connect. Same with tty. (see attached)

    Screen Shot 2016-03-31 at 9.20.40 PM.png

    Any help on how to debug greatly appreciated.

    Thanks!

    PS: power switch on both mini and regular dock snapped in second use šŸ˜ž

    0 Lazar Demin 1 Reply
  • Lazar Demin
    administrators

    @Rajesh-L
    For the serial connection, it looks like your computer isn't detecting the Omega, there should be a /dev/tty.SLAB_USBtoUART listed when you run ls /dev/tty.*
    Have you installed the driver?

    And for the wifi connection, can you describe in more detail how it doesn't connect?

    0
  • R

    Hi @Lazar-Demin ,

    I should've given bit more info in my earlier post. My bad.

    1. UART
      Yes, I have installed Silicon Labs driver. but still I don't get to see the device registered under /dev/tty.*

    2. HTTP
      I get to see AP advertised (as shown in the screenshot), but when tried to access the page omega-150e.local (or the IP address mentioned in the doc), the page (setup wizard) is not reachable.

    I would like to get the HTTP part working soon for a project. Any help on that would be greatly appreciated.

    Thanks!

    0
  • R

    Update

    Please ignore my comment on UART above. After rebooting my mac, I could see the tty and screen to it.

    The HTTP worked fine as well. Thanks @Lazar-Demin !

    Cheers!

    0 Lazar Demin 1 Reply
  • Lazar Demin
    administrators

    @Rajesh-L glad to hear it worked out!

    0
  • R

    Sorry @Lazar-Demin ,

    HTTP is still a issue for me . Looks like I'm doing something wrong.
    Spent last hour debugging with no luck.

    Here are some traces..

    server on omega - OK

    root@Omega-150E:/# wget http://localhost
--2015-09-13 18:52:21--  http://localhost/
Resolving localhost... 127.0.0.1
Connecting to localhost|127.0.0.1|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 5334 (5.2K) [text/html]
Saving to: 'index.html'

index.html          100%[=====================>]   5.21K  --.-KB/s   in 0s

2015-09-13 18:52:21 (32.3 MB/s) - 'index.html' saved [5334/5334]

    my ip address - looks OK (connected to omega AP)

    rajesh at Rajeshs-MacBook-Air in ~
$ ifconfig | grep -A3 en0
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	ether b8:e8:56:3c:ac:a2
	inet6 fe80::bae8:56ff:fe3c:aca2%en0 prefixlen 64 scopeid 0x4
	inet 192.168.3.214 netmask 0xffffff00 broadcast 192.168.3.255
	nd6 options=1<PERFORMNUD>
	media: autoselect

    route on my laptop (excluding ipv6)

    $ netstat -nr
Routing tables

Internet:
Destination        Gateway            Flags        Refs      Use   Netif Expire
default            192.168.3.1        UGSc            7        0     en0
127                127.0.0.1          UCS             1        0     lo0
127.0.0.1          127.0.0.1          UH              7      752     lo0
169.254            link#4             UCS             1        0     en0
192.168.3          link#4             UCS             2        0     en0
192.168.3.1        b8:e8:56:3c:ac:a2  UHLSr           8      350     en0
192.168.3.1/32     link#4             UCS             1        0     en0
192.168.3.214/32   link#4             UCS             2        0     en0
192.168.3.255      ff:ff:ff:ff:ff:ff  UHLWbI          1        5     en0

    curl , ping or telnet fails

    rajesh at Rajeshs-MacBook-Air in ~
$ curl 192.168.3.1
curl: (7) Couldn't connect to server

    Am I missing something here ?

    Thanks,
    Rajesh

    0
serial 87 mini dock 23
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