clear;
config;
data = zeros(1,1);
[status, validity, data] = readData(OPEN,'gps-2011-10-13-15-15.log');
index = 1;
while(status ~= EOF)
[status, validity, data] = readData(READ);
if validity == VALID_DATA
data(:,index) = data;
index = index + 1;
end
end
#define OPEN 0
#define CLOSE 1
#define READ 2
#define VALID_DATA 1
#define INVALID -1
#include "mex.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <matrix.h>
double timestamp;
int status, validity;
FILE *fid;
void mexFunction(int nlhs, mxArray *plhs[],int nrhs, const mxArray *prhs[])
{
int Op;
double *status_out, *validity_out, *data_out;
char data [17], buffer [256];
char *str;
/*check to find out the operation required*/
if (nrhs == 2)
{
Op = OPEN;
}
else
{
Op = READ;
}
/*Different cases for different operations*/
switch (Op)
{
case OPEN:
fid=fopen("gps-2011-10-13-15-15.log","r"); //open file as read
validity = INVALID;
timestamp = -1;
if (fid != NULL)
{
status = 1;
}
else
{
status = -1;
}
return;
case READ:
while(!feof(fid))
{
fgets(buffer, 255, fid); //read in the first line of the file
str = strtok(buffer, ","); //get the timestamp
strcpy(data, str);
timestamp = atof(data); //change from char to double
mexPrintf("Timestamp:%f \n",timestamp);
}
return;
case CLOSE:
fclose(fid);
timestamp = -1;
validity = INVALID;
break;
default:
mexErrMsgTxt("Incorrect parameter 3.");
break;
}
/*Passing back results*/
plhs[0] = mxCreateDoubleMatrix(1,1,mxREAL); //create an mxArray
status_out = mxGetPr(plhs[0]); //get a pointer to the data
status_out[0] = status;
plhs[1] = mxCreateDoubleMatrix(1,1,mxREAL);
validity_out = mxGetPr(plhs[1]);
validity_out[1] = validity;
plhs[2] = mxCreateDoubleMatrix(1,1,mxREAL);
data_out = mxGetPr(plhs[2]);
data_out[2] = timestamp;
mxFree(status_out);
mxFree(validity_out);
mxFree(data_out);
}
