Raspberry Pi 3 Connection Problem

My pc connects to Pi 3 with Wifi.

And this is working:

mypi = raspberrypi('192.168.88.102', 'pi', '123456')
message = mypi.connect
openShell(mypi,'ssh')

But when I try to use:

mypi = raspi('192.168.88.102', 'pi', '123456')

It is fail.And turns out below:

错误使用 raspi (line 169)
Cannot establish a TCP/IP connection to the board with device address "192.168.88.102".

原因:
    错误使用 raspi (line 165)
    Cannot create a communication link with the remote server. Please check the input arguments(ADDRESS and PORT) and make sure
    the server is running.
    Additional Information: 由于目标计算机积极拒绝，无法连接。.

And the supply power is 1A,

Somebody know why?

Thanks a lot.

[Pawel Ladosz]

can you ping your Pi and post the response you getting? Type in Matlab command window

!ping 192.168.88.102

[Mathcode Liang]

I have try,and it works

正在 Ping 192.168.88.102 具有 32 字节的数据: 
来自 192.168.88.102 的回复: 字节=32 时间=9ms TTL=64 
来自 192.168.88.102 的回复: 字节=32 时间=7ms TTL=64 
来自 192.168.88.102 的回复: 字节=32 时间=9ms TTL=64 
来自 192.168.88.102 的回复: 字节=32 时间=9ms TTL=64 

192.168.88.102 的 Ping 统计信息: 
    数据包: 已发送 = 4，已接收 = 4，丢失 = 0 (0% 丢失)， 
往返行程的估计时间(以毫秒为单位): 
    最短 = 7ms，最长 = 9ms，平均 = 8ms

[Pawel Ladosz]

What Operating system are you running on your PI?

[Mathcode Liang]

Raspbian

[Pawel Ladosz]

I suspect you have some issues with ports in your network (either PI or computer you are connecting from). In your PI terminal could you run (and post output)?

netstat -t -l -n

Also would you be able to connect pi to different network and/or computer and see whether problem is persistent?

[Mathcode Liang]

Thanks for your answer, this is the result, Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:18730           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:5901            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:6001            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN
tcp6       0      0 :::22                   :::*                    LISTEN

[Pawel Ladosz]

Apart from connecting to different network and/or computer (maybe plug it directly to computer via Ethernet?) I am out of ideas I am affraid

[Mathcode Liang]

Now I update the matlab to 2016a,also download the Raspbian Jessie full version. The connection is not working too:

r=raspi;

it turn out:

索引超出矩阵维度。

出错 raspi/getLEDConfiguration (line 684)
            trigger = ret{1};

出错 raspi/getAvailablePeripherals (line 897)
                obj.LED.(id).Trigger           = getLEDConfiguration(obj,name);

出错 raspi (line 202)

So do you have any idea? Thanks.

[Mathcode Liang]

It seem some problem with the led functon. So I open the raspi function and stop the led function below:

                 % obj.LED.(id).Trigger           =
                 % getLEDConfiguration(obj,name);%Stop this function by myself.

And the connection is fine.

[Pawel Ladosz]

That's a strange problem, can you please bring it up with matlab support so it can be fixed in future updates?

[Mathcode Liang]

Yes,it is strange.

I am a new comer. How can I bring the problem to matlab support?

Also,I try to use the system of matlab version for the Pi 3(" * raspbian_jessie_ *lite_02_26_2016_2gb.img**").

It is a lite version.

And Everything works fine in matlab or simulink. Espcial the camera part(V4L2 block) in simulink.

Matlab seems not support the official raspbian full version system.

[Pawel Ladosz]

Please find matlab support page appropriate for your country and click 'contact us'

[Mathcode Liang]

Thanks a lot.

Answer 1

[Richard]

How did you mange to connect raspberry pi to matlab via wifi? I tried multiple methods but none of them works.