How to change a parameter while the signal is running?
6 views (last 30 days)
Show older comments
Hello everyone,
I want to generate a signal that can be changed while running. I want to be able to change the magnitude while the signal is running. I tried generating a signal in background and i wrote different values for the magnitude in the command box but it didn't change anything.
I have the following code:-
%-------------------------------------
clearvars
clc
d = daqlist("ni");
deviceInfo = d{1, "DeviceInfo"};
dq = daq("ni");
fidData = fopen("logData.bin","w");
fidTime = fopen("logTime.bin","w");
DisplayTime=1;
s = daq.createSession('ni');
s.Rate=5000;
addAnalogInputChannel(s,'Dev2','ai11','Voltage');
lh = addlistener(s,'DataAvailable',@plotData);
lh1 = addlistener(s,'DataAvailable',@(src, event)logData(src, event, fidData,fidTime));
s.IsContinuous=true;
s.NotifyWhenDataAvailableExceeds=floor(DisplayTime*s.Rate);
%Output
addAnalogOutputChannel(s,'Dev2','ao0','Voltage');
Fs=s.Rate
t1=100;
t = 0 :1/Fs : t1-1/Fs;
A=0.5;
data0 = A*sin(2*pi*t*159.2)';
b=repmat(data0,5,1);
queueOutputData(s,b);
datagiver = addlistener(s, 'DataRequired',@(src,event)...
src.queueOutputData(b));
figure(1)
clf
startBackground(s);
%%
s.stop
fclose(fidData);
fclose(fidTime);
%-------------------------------------
Please help if you have an idea. I need to do this because im making a controller for the magnitude value.
Regards
Ali
0 Comments
Answers (0)
See Also
Categories
Find more on Data Acquisition Toolbox Supported Hardware in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!