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Adds input 'num' to MEX file #3

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aca6689
Ignores MATLAB autosave files
mark-toma May 5, 2016
de03079
Adds MATLAB help for MEX function myo_2c_sfunc
mark-toma May 5, 2016
e8b0c20
Adds input num
mark-toma May 5, 2016
e8d3f03
Adds calling syntax for input num
mark-toma May 5, 2016
cedb909
Ignores mex binaries
mark-toma May 5, 2016
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2 changes: 2 additions & 0 deletions .gitignore
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Expand Up @@ -45,3 +45,5 @@ Temporary Items
# MEX-file binaries
*.mex*

*.asv
*.mexw64
35 changes: 25 additions & 10 deletions myo_2c_sfunc.cpp
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Expand Up @@ -9,6 +9,9 @@
#include <string>
#include "myo_class2a.hpp"

#define NUM_DEF 1
#define NUM_MAX 12000UL

DataCollector dataCollector;


Expand Down Expand Up @@ -46,7 +49,26 @@ mxArray *create_fill_EMG (const std::array<int8_t, 8> emgData)

void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{

long int num = NUM_DEF; // default value for input num

// handle optional input num
if ( nrhs>0 ) { // user input value for num
// check for valid input type and size
if( !mxIsDouble(prhs[0]) || mxIsComplex(prhs[0]) ||
!(mxGetM(prhs[0])==1 && mxGetM(prhs[0])==1) )
mexErrMsgTxt("Input num must be a real numeric scalar.");
// get the input value
num = *mxGetPr(prhs[0]); // implicit cast to integer value
// check for valid input value
if (num<1 || num>NUM_MAX)
mexErrMsgTxt("Input num is out of range.");
}

// check number of output arguments
if(nlhs > 1){
mexErrMsgTxt("Too many output arguments.");
}

myo::Hub hUb("com.example.hello-myo");
hUb.addListener(&dataCollector);
myo::Myo* mYo = hUb.waitForMyo(10);
Expand Down Expand Up @@ -80,7 +102,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
plhs[0] = mxCreateStructMatrix (1, 1, frame_fields, frame_field_names);

int counter=0;
int mRow=12000;
int mRow=num;//12000;

const mwSize dims[]={mRow,1};
const mwSize dimsV[]={mRow,3};
Expand All @@ -100,14 +122,7 @@ void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
mxArray *mxaCounter = mxCreateNumericArray (2, dims, mxDOUBLE_CLASS, mxREAL);
mxArray *mxgCounter = mxCreateNumericArray (2, dims, mxDOUBLE_CLASS, mxREAL);

/* Check for proper number of input and output arguments */
if (nrhs !=0) {
mexErrMsgTxt("No input argument required.");
}
if(nlhs > 1){
mexErrMsgTxt("Too many output arguments.");
}


// int counter=1;
// // Finally we enter our main loop.

Expand Down
34 changes: 34 additions & 0 deletions myo_2c_sfunc.m
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@@ -0,0 +1,34 @@
% MYO_2C_SFUNC(NUM) Poll Myo for NUM samples
% This MEX function collects Myo data by polling with best-effort
% approach to collect NUM samples. Data is returned in a single struct
% output variable.
%
% Usage:
% F = myo_2c_sfunc()
% Returns one data sample from Myo in output struct F.
%
% F = myo_2c_sfunc(num)
% Same as above, but returns num samples in scalar output struct F.
% Note that if input num is not provided, the default is 1.
%
% Inputs
% num (optional)
% Number of samples to collect from Myo. The default value is 1.
%
% Outputs
% F
% Structure containing vectors of Myo data samples with the following
% fields
% F.Roll TODO
% F.Pitch TODO
% F.Yaw TODO
% F.accData TODO
% F.gyroData TODO
% F.emgData TODO
% F.onArm TODO
% F.isUnlocked TODO
% F.onWhichArm TODO
% F.whichPose TODO
% F.eCounter TODO
% F.aCounter TODO
% F.gCounter TODO
15 changes: 13 additions & 2 deletions test_matMyo.m
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Expand Up @@ -2,9 +2,20 @@

clear
clc
f=myo_2c_sfunc ;

% f=myo_2c_sfunc; % default one sample
% f=myo_2c_sfunc(1); % explicit one sample
f=myo_2c_sfunc(10000);


% Input error cases
% [~,~] = myo_2c_sfunc; % too many outputs
% myo_2c_sfunc({}); % bad data type
% myo_2c_sfunc(''); % bad data type
% myo_2c_sfunc(struct); % bad data type
% myo_2c_sfunc(0); % bad value
% myo_2c_sfunc(-1); % bad value
% myo_2c_sfunc(1e8); % bad value


%%
[~, ind]=unique(f.eCounter);
Expand Down