Serial connection not possible, not detected

[Shai Perednik]

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

[Boken Lin]

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.

[Rajesh L]

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)

Any help on how to debug greatly appreciated.

Thanks!

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

[Lazar Demin]

@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?

[Rajesh L]

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!

[Rajesh L]

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!

[Lazar Demin]

@Rajesh-L glad to hear it worked out!

[Rajesh L]

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

[Rajesh L]

Update

Gave up on the board and picked up a new one.

This looks better - curl works from my mac.

$ curl -v http://omega-158a.local -o /tmp/omega.html
* Rebuilt URL to: http://omega-158a.local/
*   Trying fe80::42a3:6bff:fec1:158b...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0* Connected to omega-158a.local (fe80::42a3:6bff:fec1:158b) port 80 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.41.0
> Host: omega-158a.local
> Accept: */*
>
< HTTP/1.1 200 OK
< Connection: Keep-Alive
< Keep-Alive: timeout=20
< ETag: "5e-14d6-55f5b94d"
< Last-Modified: Sun, 13 Sep 2015 17:58:37 GMT
< Date: Sun, 13 Sep 2015 18:41:31 GMT
< Content-Type: text/html
< Content-Length: 5334
<
{ [2674 bytes data]
100  5334  100  5334    0     0   9928      0 --:--:-- --:--:-- --:--:--  744k
* Connection #0 to host omega-158a.local left intact

However, neither of the browsers (chrome, FF, safari) succeed to load the setup wizard.

Any updates (firmware upgrade, etc) to be made ?

Thanks!

[Lazar Demin]

@Rajesh-L if you access the Omega via serial, you can run the wifisetup command to connect to a wifi network, and then the oupgrade command to download and install the latest firmware. You can check out the Getting Started guide for OS X for more details.

Let me know how it goes.

[Rajesh L]

@Lazar-Demin, oupgrade solved the UI issues. But I missed the opportunity to see the 'first user' experience of setting up as I was intending to use it as part of project that has zero setting to start with.

I tried factory reset and the board stopped working.
So, I'm dropping for now.

Thanks !

[Lazar Demin]

@Rajesh-L The Omega stopped working after a factory reset?