Matlab does not connect with my PandaBoard

I am trying to connect the PandaBoard with matlab using:

     h = panda
     h.connect

Matlab then gives te following error:

    Error using LinuxServices.connect (line 58)
    SSH connection to host 192.168.0.103 failed:
    FATAL ERROR: Network error: Connection refused

if I try to connect with the PandaBoard using Putty, there is no problem connecting. Firewall is off, IP-adresses are good and they are directly connected.

Does anyone have any idea how to solve this?

[Matthias]

I have exactly the same problem. Did you solve it?

I can access the PandaBoard with Putty and VNC, but not from within Matlab. I tried R2013a and R2012b, but no difference.

[Ugur Yildiz]

I faced with the same problem with Raspberry Pi. I can connect with Putty and even get/put files via MATLAB command prompt as

    C = raspberrypi;
    C.getFile('/home/pi/ocr_pi.png');

but cannot connect

    >> C.connect
    Error using LinuxServices.connect (line 58)
    SSH connection to host 192.168.2.76 failed:
    FATAL ERROR: Network error: Connection refused

Anybody solved?

Windows 7 x64, R2013a, MATLAB installed on E drive, not the system drive.

Answer 1

[Murat Belge]

Execute the following commands on a MATLAB prompt after replacing your MATLAB install location and the IP address:

>> cmd = 'echo y| "C:\Work\R2013ad\matlab\toolbox\idelink\foundation\hostapps\plink" -ssh -v -pw "raspberry" -P 22 pi@192.168.0.1 "echo Connection successful"'

>> system(cmd)

This will display verbose output while connecting to the board. This is exactly the same command "connect" method executes with the addition of "-v" switch that turns on the verbose output option. Post the output here. I might be able to diagnose the issue.

One thing you might want to try is to start MATLAB in administrator mode and try to connect.

[Pallab Maji]

I had similar problem. I did as you said and got following output:

>> system(cmd) Looking up host "" Connecting to fe80::f8ef:e403:1465:b44d%11 port 22 Failed to connect to fe80::f8ef:e403:1465:b44d%11: Network error: Connection refused Connecting to fe80::f8ef:e403:1465:b44d%11 port 22 Connecting to fe80::f8ef:e403:1465:b44d%11 port 22 Connecting to fe80::f8ef:e403:1465:b44d%11 port 22 Failed to connect to fe80::f8ef:e403:1465:b44d%11: Network error: Connection refused Network error: Connection refused FATAL ERROR: Network error: Connection refused

ans = 1

Answer 2

[Pallab Maji]

Hi,

I had a similar problem and solved it today. I was using a LAN splitter (which was connected to my router) to connect the pi and my pc to my local network. Now when I removed the splitter and connected both PC and the pi to the router, I was able to program it properly from Matlab. I don't know exactly why I am not able to connect to the pi from Matlab using the splitter because I could use putty to connect to my pi from my pc in this case. Any idea?

Answer 3

[Ugur Yildiz]

I finally found a solution for my problem. Details here (plink.exe bug) : https://groups.google.com/d/msg/comp.security.ssh/BYtM80rNiCI/SNyiyLyqmhIJ and here: http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/plink-hostname.html

Run Putty.exe in MATLAB tree "matlab\toolbox\idelink\foundation\hostapps\". If you have "Default Settings" with any Host name and with a connection type other than SSH, then clear hostname, select SSH and save the new "Default Settings".

@Murat Belge: Thanks for the source code of the pcode-secured "connect" method.

[Andreas]

Thanks to your advice I solved my Problem with the Pi in External Mode. Thank you.:)