.Net object, Read problems

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animati 2013-10-9

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https://ww2.mathworks.cn/matlabcentral/answers/89660-net-object-read-problems

评论： animati 2013-10-10

Hi sir, I'm living very strange problem. I'm using a .net class for serial communication. It's working very well, i can see how many data coming but never see 00 value... I didn't figured out why.. I'm able to sent any character to any device and any data rate (600-921600) and I can read any character except 0 (zero) value.

I'm working like that:

rx_available=uint32(0); TxQueue=uint32(0); num_rx=uint32(0); [status_rx,rx_available] =GetRxBytesAvailable(handles.PortOBJ, rx_available);

[status_Read,Rx_Data,num_rx] = Read( handles.PortOBJ,rx_available, num_rx);

and i try to see which data came,

Rx_Data.char or only Rx_data object , never see 0 (zero) character. How can I trabsform .net object to numeric or uint8 value.

I'm stuck in here... And after I want to share my FTDI-Xbee library, I hope...

Sincerely...

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animati 2013-10-10

编辑：animati 2013-10-10

在 MATLAB Online 中打开

Now, new problem is ready.... While i was using

Data=Rx_data.TocharArray
for i=1:Data.Length
      if isemty ( Data(i) )
         Data(i)=uint8(0)% problem solved this place
      end
end

All Data member have to lower than 128 value... If we want to use 128-255 value, always came 63 value to us. I'm struggle on that problem now......

animati 2013-10-10

编辑：animati 2013-10-10

在 MATLAB Online 中打开

I builded byte array for this and problem solved......

      Rx_data = NET.createArray('System.Byte',256);% for buffer
      [status,rx_available]=PortObj.RxByteAvailable(Rx_data,rx_available);
      % see how many byte came
      [status,num]=PortObj.Read(Rx_data,rx_available,num);%

and all data is inside buffer.... How can we see? Like that

for i=1:rx_available

disp( Rx_data(i) )

end

Finally......................................

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