Serial connection not possible, not detected

[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?