Help needed for parallel port interfacing using matlab

Replies

• 

  raknahs2

  Hi Dude,
  
  controlling parallel port through MATLAB is quite simple.
  Check below lines of MATLAB code which I am using in my project.
  
  dio = digitalio('parallel','LPT1')
  --> create an object
  
  data1 = addline(dio,0:7,0,'out') %Pin 2-9
  data2 = addline(dio,0,2,'out') %Pin 1
  data3 = addline(dio,1,2,'out') %Pin 14
  --> to configure parallel port line
  
  Following command will output "0" to data1 of parallel port
  putvalue(data1,0)
  
  Don't hesitate to ask me if you have any queries.
  ;-)
• 

  jowie_510

  hi bro..
  I also making a robot and i still confiuse about that (the discussion above)..but i think my question is still in this scope..
  is it the connection between computer and the robot is without wire??..
  Hope anyone can explain detail...
  
  thanks..
• 

  raknahs2

  No. MATLAB code given above is to interface a peripheral (a device) via parallel port with the PC.
• 

  jowie_510

  ok.. thanks for your explanation..
• 

  Zentill.now

  This thread was of great use for me thank u........
• 

  Reaver

  Hye i want to control a lift (I hav made my own mechanical structure).
  Just give me a example of how to turn on/off 4-5 leds using parallel port through matlab plzzzzzzzzzzz
• 

  gtugac

  hi everyone
  i also have this project where i only have to control 5 leds by MATLAB...
  and i have to use my laptop to do it.
  
  i have found some information about using serial-parallel ports and recently have a premade PIC circuit. but still i have so little time that i need your advices emergently...
  
  thanks
• 

  Himanshutime

  this is done by using embeded programing and using infrared or radio wave signals and made a device to genrate perticular signals conect on 25 pin parlel port by using rs232 wier, but i want to conform you that is your robot is able to move on stayers by themself if yes please tel me how?
  
  by
• 

  Himanshutime

  this is done by using embeded programing in c langwage and using infrared or radio wave signals and made a device to genrate perticular signals conect on 25 pin parlel port by using rs232 wier, but i want to conform you that is your robot is able to move on stayers by themself if yes please tel me how?
  
  by
• 

  heloitsadi

  Check this out guys..
  
• 

  coolbreeze

  Ms thesis
  
  This is code for parallel interference cancelltion in ds cdma using matrix algebraic approach.
  Please check the code and let me know if iam doin any mistake . Also I need to apply slow and fast rayleigh fading in this model.
  
  The rcd signal is R = SAB + N
  where R,S,A,B are matrices
  The matlab code is given below :
  close all
  clear all;
  clc;
  warning off all
  
  K = 27; %No. of users
  Navg = 1e3; %No. of repititions
  snr = 5:1:25; %SNR RANGE
  
  Sv = (10.^(-snr/10)); %Noise variance in different SNR
  A = eye(K); %input power
  %Get signature sequences
  load GS31;
  S = GS31(1:K,;
  S= S';
  Lc = length(S😀,1));
  Sn= S./sqrt(Lc); %Normalize energy of signature waveforms
  R = Sn'*Sn; % Calculate correlation matrix
  
  corr=(R-eye(size(R)));
  
  h = waitbar(0,'WAIT...');
  for t = 1:Navg
  waitbar(t/Navg);
  for j = 1:length(snr)
  noise =(Sv(j))^.5*randn(Lc,1);
  b=2*(randint(K,1)-0.5);
  BT=Sn*A*b;
  r=awgn(BT,snr(j));
  % r=BT+noise;
  y = Sn'*r;
  
  ysdec = inv(R)*Sn'*r;
  
  YMF = sign(y);
  YDEC= sign(ysdec);
  novector(1:K) = Sv(j);
  sigma2= diag(novector);
  
  t1=R+sigma2;
  ysmmse = (inv ( t1 ))* y;
  YMMSE= sign(ysmmse);
  
  %%CPIC
  
  yinit=zeros(K,1);
  ypic1= (Sn'*r) + yinit ;
  YPIC1 = sign(ypic1);
  
  yinit2=ypic1;
  ypic2=(Sn'*r) - ( corr*A*yinit2 );
  YPIC2 = sign(ypic2);
  
  yinit3=ypic2;
  ypic3=(Sn'*r) - ( corr*A*yinit3 );
  YPIC3 = sign(ypic3);
  
  
  yinit4= ypic3;
  ypic4=(Sn'*r) - ( corr*A*yinit4 );
  YPIC4 = sign(ypic4);
  
  yinit5= ypic4;
  ypic5=(Sn'*r) - ( corr*A*yinit5 );
  YPIC5 = sign(ypic5);
  
  
  yinit6=ypic5;
  ypic6=(Sn'*r) - ( corr*A*yinit6 );
  YPIC6 = sign(ypic6);
  
  
  
  yinit7=ypic6;
  ypic7=(Sn'*r) - ( corr*A*yinit7 );
  YPIC7 = sign(ypic7);
  
  
  yinit8=ypic7;
  ypic8=(Sn'*r) - ( corr*A*yinit8 );
  YPIC8 = sign(ypic8);
  
  
  
  ERMF(j)= length(find (YMF ~= b))/K;
  ERDEC(j)= length(find (YDEC ~= b))/K;
  ERMMSE(j)= length(find (YMMSE ~= b))/K;
  ERPIC1(j)= length(find (YPIC1 ~= b))/K;
  ERPIC2(j)= length(find (YPIC2 ~= b))/K;
  ERPIC3(j)= length(find (YPIC3 ~= b))/K;
  ERPIC4(j)= length(find (YPIC4 ~= b))/K;
  ERPIC5(j)= length(find (YPIC5 ~= b))/K;
  ERPIC6(j)= length(find (YPIC6 ~= b))/K;
  ERPIC7(j)= length(find (YPIC7 ~= b))/K;
  ERPIC8(j)= length(find (YPIC8 ~= b))/K;
  end
  EERMF(t,=ERMF;
  EERDEC(t,=ERDEC;
  EERMMSE(t,=ERMMSE;
  EERPIC1(t,=ERPIC1;
  EERPIC2(t,=ERPIC2;
  EERPIC3(t,=ERPIC3;
  EERPIC4(t,=ERPIC4;
  EERPIC5(t,=ERPIC5;
  EERPIC6(t,=ERPIC6;
  EERPIC7(t,=ERPIC7;
  EERPIC8(t,=ERPIC8;
  end
  
  
  BERMF = smooth(mean(EERMF,1));
  BERDEC = smooth(mean(EERDEC,1));
  BERMMSE = smooth(mean(EERMMSE,1));
  BERPIC1 = smooth(mean(EERPIC1,1));
  BERPIC2 = smooth(mean(EERPIC2,1));
  BERPIC3 = smooth(mean(EERPIC3,1));
  BERPIC4 = smooth(mean(EERPIC4,1));
  BERPIC5 = smooth(mean(EERPIC5,1));
  BERPIC6 = smooth(mean(EERPIC6,1));
  BERPIC7 = smooth(mean(EERPIC7,1));
  BERPIC8 = smooth(mean(EERPIC8,1));
  
  semilogy(snr,BERMF,'k*-',snr,BERPIC1,'m^-',snr,BERPIC2,'rs-',snr,BERPIC3,'yo-',snr,BERPIC4,'k<-',snr,BERPIC5,'c^-',snr,BERPIC6,'y^-',snr,BERPIC7,'r>-',snr,BERPIC8,'bs-',snr,BERDEC,'g*-',snr,BERMMSE,'go-');
  grid on
  xlabel('SNR')
  ylabel('Average BER')
  legend('MF','Stage1','Stage2','Stage3','Stage4','Stage5','Stage6','Stage7','Stage8','DECOR','MMSE')
  title('BER vs SNR--Conventional PIC-25 Users -AWGN Channel')
  close(h)
  
  Added after 1 minutes:
  
  Dear all,
  
  The : ) got replaced by a smiley.
  
  I need urgent reply regarding fading
  thanks in advance
• 

  Ahsanmohyuddin

  raknahs2

  Hi Dude,
  
  controlling parallel port through MATLAB is quite simple.
  Check below lines of MATLAB code which I am using in my project.
  
  dio = digitalio('parallel','LPT1')
  --> create an object
  
  data1 = addline(dio,0:7,0,'out') %Pin 2-9
  data2 = addline(dio,0,2,'out') %Pin 1
  data3 = addline(dio,1,2,'out') %Pin 14
  --> to configure parallel port line
  
  Following command will output "0" to data1 of parallel port
  putvalue(data1,0)
  
  Don't hesitate to ask me if you have any queries.
  ;-)

  
  Dear
  
  I am working on an idea, i want to control the direction of DC motor(clockwise or anticlockwise)
  using GUI and parallel port. I have made a GUI on MATLAB but don't know how to program its .m file
  GUI figure is attached.
  
  
  
  I have added two options
  i- clockwise
  ii-anticlockwise
  
  I redefine the problem
  " select any one of the direction and press 'ok'.
  if selected ' clockwise' send 0 to pin2 of parallel port
  if selected ' anticlockwise' send 1 to pin2 of parallel port
  
  I am waiting for your reply
• 

  Kaustubh Katdare

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• 

  Ahsanmohyuddin

  The_Big_K

  Please upload your images to imageshack.com and then enter full URL of the image (ending in file extension) in the button on the post editor.

  this site is not allowed in my area.... Is image i have added is not visible?