Сборка Часть1 / avmis_labs / неразобрано / 501 / Лаб_СОМ / Солодуха / COM_1

#include <windows.h>
#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream> 

#define PORT "COM1"

int Write(HANDLE H,char c)
{
	DWORD Byte;
	if(!WriteFile(H, &c, 1, &Byte, NULL))
	{
			puts("Error write");
			_getch();
			return 0;
		
	}
	return 1;
}





int Read(HANDLE H, char &c)
{
	DWORD Byte;
	if(!ReadFile(H, &c, 1,&Byte,0))
		{
			puts("Error read");
			_getch();
			return 0;
		
		}
	return 1;
}




int main()
{
	HANDLE handle;
	handle = CreateFileA(PORT,GENERIC_READ | GENERIC_WRITE,0,0,OPEN_EXISTING,0,NULL);

	if(handle == INVALID_HANDLE_VALUE)
	{
		puts("Error1");
		_getch();
		return 0;
	}
	char c;
	int flag=0;
	while(1)
	{
		system("cls");
		printf("Press 1 - sinhron\nPress 2 - asinhron");
		c = _getch();
		//printf("%d",c);
		if(!Write(handle,c))
				return 0;
		if(c=='1'||c=='2')
			break;
	}
	if(c=='1')
		flag=1;

	system("cls");
	
	puts("Vvedite text: \n");

	char *ms;
	ms=(char*)calloc(5,sizeof(char));//с отчиской
	ms[5]='\n';
	while(1)
	{
		c = _getch();

		ms[0]=ms[1];
		ms[1]=ms[2];
		ms[2]=ms[3];
		ms[3]=c;
		if(c==13)
			printf("\n");
		else
			printf("%c",c);
		if(!Write(handle,c))
			return 0;
		if(!strcmp(ms,"exit"))
		{
			_getch();
			break;
		}
		if(flag)
		{
			char a;
			while(1)
			{
				if(Read(handle,a))
				{
					if(a==c)
						break;

				}
				if(a==c)
					break;
			}
		
		}
	}
	return 0;
}