MATLAB Support Package for Velleman K8055/VM110 Experiment Board
22 Jul 2011
MATLAB library for communicating with a Velleman K8055/VM110 USB Experiment Interface Board
% DAQPLOT3 - Asychronous analog data acquisition GUI with stripchart
% DAQPLOT3 allows the user to configure and start analog data
% acquisition. The acquired data is plotted in a scrolling stripchart.
% DAQPLOT3 returns control the command line right away, so the
% user is able to invoke other MATLAB commands.
% DAQPLOT3 builds on DAQPLOT and DAQPLOT2. It demonstrates how to use the
% GUI.DAQINPUT widget in an asynchronous (i.e., non-blocking) manner.
% This is achieved by processing the input in a callback function rather
% than a while loop.
% THIS GUI REQUIRES THE DATA ACQUISITION TOOLBOX
% Copyright 2009 The MathWorks, Inc.
myGui = gui.autogui;
daq = gui.daqinput;
chart = gui.stripchart(gca);
daq.AdaptorName = 'winsound';
daq.DeviceId = '0';
daq.Channels = 1;
daq.SampleRate = 8000;
% We could also do this:
% myGui.ValueChangedFcn = @processInput;
% but if myGui has other input widgets the chart would be updated
% needlessly. It is more efficient to set ValueChangedFcn
% on the widget itself.
daq.ValueChangedFcn = @processInput;
% processInput is a nested function, so it has access to
% all the variables declared in the top-level (myGui, daq, etc.)
function processInput(hWidget) %#ok<INUSD>
info = daq.Value;