#include <stdlib.h>
#include <stdio.h>
 
#ifdef _WIN32
#include <Windows.h>
#else
#include <unistd.h>
#endif
 
#include "rs232.h"
 
 
int main()
{
	int i=0,
	cport_nr=3,        /* /dev/ttyS0 (COM1 on windows) */
    bdrate=9600;       /* 9600 baud */
 
	char mode[]={'8','N','2',0}, str[2];
	str[0]='a'; //prender LED
	str[1]='z'; //apagar LED
 
	if(RS232_OpenComport(cport_nr, bdrate, mode))
	{
		printf("Can not open comport\n");
		return(0);
	}
	while(1)
	{
		RS232_cputs(cport_nr, str[0]);
		printf("sent: %c\n", str[0]);		
#ifdef _WIN32
		Sleep(3000);
#else
		usleep(1000000);  /* sleep for 1 Second */
#endif
		RS232_cputs(cport_nr, str[1]);
		printf("sent: %c\n", str[1]);
		i++;
		if(i>2) break;
	}
  return(0);
}