Aim of the program to is read to Atmega board, which has portb which is l.e.d .
When the input of +25 , it will move the stepper motor forward 25 , and negative -25 move it back.
I got stuck after reading the +/- and argv1.
any tutorials online or advice greatly appreciated
#include <iostream>
#include <cstdlib>
#include <string>
#include <sstream>
#include <string.h>
#include <stdio.h>
using namespace std;
stringstream stst;
string str ;
int command(string *str)
{ FILE *fpipe ;
if ( !(fpipe = (FILE*)popen(str->c_str(),"r")))
{ cout << "pipe error" << endl ;
exit(0) ;
}
char line[100] ;
fgets( line, sizeof line, fpipe) ;
pclose(fpipe) ;
*str = line ;
return( atoi(line)) ;
int main(int argc, char *argv[])
char *p;
signed int para2 = strtol(argv[1], &p, 0);
char q[100];
strncpy(q, argv[1], 2 );
char sign = q[0];
int clockwise_states[4] = {8,2,4,1};
int anticlockwise_states[4] = {1,4,2,8};
int msb;
int value;
int read;
stst.str("");// clear
str = "ousb -r io portb";
read = cpp_do_ousb_command(&str);
value = read & 15; // getting only LSBs
msb = read & 240; // getting only MSBs
int i = 0;
int j = 0;
signed int steps = 0;