outport.c

直接通过DLL实现端口读写操作的mex程序

#include "mex.h"
#include "conio.h"

void mexFunction( int nlhs, mxArray *plhs[],
				  int nrhs, const mxArray*prhs[] )
{
	unsigned short port;
	unsigned char  ch;
	double   *ptr;

	if (nrhs != 2)
		mexErrMsgTxt("Need two parameters\n");

	if (!mxIsNumeric(prhs[0]))
		mexErrMsgTxt("Port should be numeric\n");

	if (!mxIsNumeric(prhs[1]))
		mexErrMsgTxt("Byte should be numeric\n");

	ptr     = mxGetPr(prhs[0]);
	port    = (unsigned short) (*ptr);

	ptr     = mxGetPr(prhs[1]);
	ch      = (unsigned char ) (*ptr);

	_outp(port, ch);
}