Hardware Interfacing / Home Automation using C
- I have implemented it using C Graphics and RS232 library files.
- You can run this code in codeblock and can generate .exe file.
- You need to use 8085 microcontroller to connect your electrical device
- For further help mail me I will tell everything.
- You need to enable Graphic.c in code blocks for that follow the link
#include <stdlib.h>
#include <stdio.h>
#ifdef _WIN32
#include <Windows.h>
#else
#include <unistd.h>
#endif
//#include "rs232.h"
#include<graphics.h>
#include<math.h>
#include<conio.h>
#include<iostream>
#include<dos.h>
void RS232_cputs(int comport_number, const char *text) ;
int RS232_OpenComport(int comport_number, int baudrate, const char *mode);
using namespace std;
void rectangled(int,int,int,int,int);
void border();
void setbkcolorr(int);
void header();
void on(int);
void off(int);
char throwchar();
void makearray();
int x=100,y=250,xx[8],yy[8],xxx=140,yyy=240,n[6];
int bkcolor=0,nrcolor=12,temp[8],cc=14,txc=8;
int i=0,
cport_nr=0, // /dev/ttyS0 (COM1 on windows)
bdrate=9600; // 9600 baud
char mode[]={'8','N','1',0},
str[2][512];
int main()
{
int gd=0,gm=0;
initgraph(&gd,&gm,"c:\\tc\\bgi");
system("color fc");
settextstyle(1,0,6);
setcolor(nrcolor);
border();
setcolor(YELLOW);
outtextxy(100,50,"HOME AUTOMATION");
setcolor(RED);
int i;
for(i=0;i<6;i++)
{
xx[i] = x;
yy[i] = y;
x+=200;
}
//setbkcolorr(bkcolor);
for(i=0;i<6;i++)
{
rectangled(xx[i],y,xx[i]+xxx,y+yyy,15);
}
//setbkcolorr(bkcolor);
settextstyle(0,0,4);
for(i=0;i<6;i++)
{
//outtextxy(xx[i]+50,500,"1");
off(i);
}
setcolor(cc);
i=0;
rectangled(xx[i],y,xx[i]+xxx,y+yyy,15);
if(RS232_OpenComport(cport_nr, bdrate, mode))
{
printf("Can not open comport\n");
getchar();
return(0);
}
while(1)
{
char ch;
ch = getch();
if(ch == 'd')
{
if(i==5)
continue;
setcolor(nrcolor);
rectangled(xx[i],y,xx[i]+xxx,y+yyy,15);
setcolor(cc);
i++;
rectangled(xx[i],y,xx[i]+xxx,y+yyy,15);
}
if(ch=='a')
{
if(i==0)
continue;
setcolor(nrcolor);
rectangled(xx[i],y,xx[i]+xxx,y+yyy,15);
setcolor(cc);
i--;
rectangled(xx[i],y,xx[i]+xxx,y+yyy,15);
}
if(ch==' ')
{
if((temp[i]%2)==1)
on(i);
else
off(i);
makearray();
throwchar();
}
if(ch == 'c')
{
for(int i=0;i<6;i++)
cout << " " << temp[i];
break;
}
}
getch();
}
void rectangled(int x,int y,int xx,int yy,int d)
{
for(int i=0;i<=d;i++)
rectangle(x+i,y+i,xx-i,yy-i);
}
void border()
{
setcolor(2);
rectangled(0,0,1360,700,10);
rectangled(25,25,1335,675,10);
}
void off(int i)
{
temp[i]++;
setcolor(bkcolor);
settextstyle(1,0,6);
outtextxy(xx[i]+32,y+20,"O");
outtextxy(xx[i]+32,y+80,"N");
setcolor(txc);
outtextxy(xx[i]+32,y+20,"O");
outtextxy(xx[i]+32,y+80,"F");
outtextxy(xx[i]+32,y+156,"F");
}
void on(int i)
{
temp[i]++;
setcolor(bkcolor);
settextstyle(1,0,6);
outtextxy(xx[i]+32,y+20,"O");
outtextxy(xx[i]+32,y+80,"F");
outtextxy(xx[i]+32,y+156,"F");
{
setcolor(txc);
outtextxy(xx[i]+32,y+20,"O");
outtextxy(xx[i]+32,y+80,"N");
}
}
void makearray()
{
for(int i=0;i<6;i++)
{
n[i] = (temp[i] - 1) % 2;
}
cout << endl;
for(int i=0;i<6;i++)
cout << " " << n[i];
}
char throwchar()
{
int sum=0;
char ch;
for(int i=0;i<6;i++)
{
sum += n[i]*pow(2,(5-i));
}
ch = (char)sum + 48;
cout << sum << " " << ch << endl;
str[0][0] = ch;
str[0][1] = '\0';
cout << "sent: " << str[0];
RS232_cputs(cport_nr, str[0]);
cout << "sent: " << str[0];
#ifdef _WIN32
Sleep(1000);
#else
usleep(1000000); // sleep for 1 Second
#endif
return ch;
}
/*void setbkcolorr(int c)
{
setbkcolor(c);
for(int i=0;i<8;i++)
outtextxy(0,i*50," ");
}*/
/*
***************************************************************************
*
* Author: Teunis van Beelen
*
* Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Teunis van Beelen
*
* Email: teuniz@gmail.com
*
***************************************************************************
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
***************************************************************************
*
* This version of GPL is at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
*
***************************************************************************
*/
/* Last revision: January 10, 2015 */
/* For more info and how to use this library, visit: http://www.teuniz.net/RS-232/ */
//#include "rs232.h"
#if defined(__linux__) || defined(__FreeBSD__) /* Linux & FreeBSD */
int Cport[38],
error;
struct termios new_port_settings,
old_port_settings[38];
char comports[38][16]={"/dev/ttyS0","/dev/ttyS1","/dev/ttyS2","/dev/ttyS3","/dev/ttyS4","/dev/ttyS5",
"/dev/ttyS6","/dev/ttyS7","/dev/ttyS8","/dev/ttyS9","/dev/ttyS10","/dev/ttyS11",
"/dev/ttyS12","/dev/ttyS13","/dev/ttyS14","/dev/ttyS15","/dev/ttyUSB0",
"/dev/ttyUSB1","/dev/ttyUSB2","/dev/ttyUSB3","/dev/ttyUSB4","/dev/ttyUSB5",
"/dev/ttyAMA0","/dev/ttyAMA1","/dev/ttyACM0","/dev/ttyACM1",
"/dev/rfcomm0","/dev/rfcomm1","/dev/ircomm0","/dev/ircomm1",
"/dev/cuau0","/dev/cuau1","/dev/cuau2","/dev/cuau3",
"/dev/cuaU0","/dev/cuaU1","/dev/cuaU2","/dev/cuaU3"};
int RS232_OpenComport(int comport_number, int baudrate, const char *mode)
{
int baudr,
status;
if((comport_number>37)||(comport_number<0))
{
printf("illegal comport number\n");
return(1);
}
switch(baudrate)
{
case 50 : baudr = B50;
break;
case 75 : baudr = B75;
break;
case 110 : baudr = B110;
break;
case 134 : baudr = B134;
break;
case 150 : baudr = B150;
break;
case 200 : baudr = B200;
break;
case 300 : baudr = B300;
break;
case 600 : baudr = B600;
break;
case 1200 : baudr = B1200;
break;
case 1800 : baudr = B1800;
break;
case 2400 : baudr = B2400;
break;
case 4800 : baudr = B4800;
break;
case 9600 : baudr = B9600;
break;
case 19200 : baudr = B19200;
break;
case 38400 : baudr = B38400;
break;
case 57600 : baudr = B57600;
break;
case 115200 : baudr = B115200;
break;
case 230400 : baudr = B230400;
break;
case 460800 : baudr = B460800;
break;
case 500000 : baudr = B500000;
break;
case 576000 : baudr = B576000;
break;
case 921600 : baudr = B921600;
break;
case 1000000 : baudr = B1000000;
break;
case 1152000 : baudr = B1152000;
break;
case 1500000 : baudr = B1500000;
break;
case 2000000 : baudr = B2000000;
break;
case 2500000 : baudr = B2500000;
break;
case 3000000 : baudr = B3000000;
break;
case 3500000 : baudr = B3500000;
break;
case 4000000 : baudr = B4000000;
break;
default : printf("invalid baudrate\n");
return(1);
break;
}
int cbits=CS8,
cpar=0,
ipar=IGNPAR,
bstop=0;
if(strlen(mode) != 3)
{
printf("invalid mode \"%s\"\n", mode);
return(1);
}
switch(mode[0])
{
case '8': cbits = CS8;
break;
case '7': cbits = CS7;
break;
case '6': cbits = CS6;
break;
case '5': cbits = CS5;
break;
default : printf("invalid number of data-bits '%c'\n", mode[0]);
return(1);
break;
}
switch(mode[1])
{
case 'N':
case 'n': cpar = 0;
ipar = IGNPAR;
break;
case 'E':
case 'e': cpar = PARENB;
ipar = INPCK;
break;
case 'O':
case 'o': cpar = (PARENB | PARODD);
ipar = INPCK;
break;
default : printf("invalid parity '%c'\n", mode[1]);
return(1);
break;
}
switch(mode[2])
{
case '1': bstop = 0;
break;
case '2': bstop = CSTOPB;
break;
default : printf("invalid number of stop bits '%c'\n", mode[2]);
return(1);
break;
}
/*
http://pubs.opengroup.org/onlinepubs/7908799/xsh/termios.h.html
http://man7.org/linux/man-pages/man3/termios.3.html
*/
Cport[comport_number] = open(comports[comport_number], O_RDWR | O_NOCTTY | O_NDELAY);
if(Cport[comport_number]==-1)
{
perror("unable to open comport ");
return(1);
}
error = tcgetattr(Cport[comport_number], old_port_settings + comport_number);
if(error==-1)
{
close(Cport[comport_number]);
perror("unable to read portsettings ");
return(1);
}
memset(&new_port_settings, 0, sizeof(new_port_settings)); /* clear the new struct */
new_port_settings.c_cflag = cbits | cpar | bstop | CLOCAL | CREAD;
new_port_settings.c_iflag = ipar;
new_port_settings.c_oflag = 0;
new_port_settings.c_lflag = 0;
new_port_settings.c_cc[VMIN] = 0; /* block untill n bytes are received */
new_port_settings.c_cc[VTIME] = 0; /* block untill a timer expires (n * 100 mSec.) */
cfsetispeed(&new_port_settings, baudr);
cfsetospeed(&new_port_settings, baudr);
error = tcsetattr(Cport[comport_number], TCSANOW, &new_port_settings);
if(error==-1)
{
close(Cport[comport_number]);
perror("unable to adjust portsettings ");
return(1);
}
if(ioctl(Cport[comport_number], TIOCMGET, &status) == -1)
{
perror("unable to get portstatus");
return(1);
}
status |= TIOCM_DTR; /* turn on DTR */
status |= TIOCM_RTS; /* turn on RTS */
if(ioctl(Cport[comport_number], TIOCMSET, &status) == -1)
{
perror("unable to set portstatus");
return(1);
}
return(0);
}
int RS232_PollComport(int comport_number, unsigned char *buf, int size)
{
int n;
n = read(Cport[comport_number], buf, size);
return(n);
}
int RS232_SendByte(int comport_number, unsigned char byte)
{
int n;
n = write(Cport[comport_number], &byte, 1);
if(n<0) return(1);
return(0);
}
int RS232_SendBuf(int comport_number, unsigned char *buf, int size)
{
return(write(Cport[comport_number], buf, size));
}
void RS232_CloseComport(int comport_number)
{
int status;
if(ioctl(Cport[comport_number], TIOCMGET, &status) == -1)
{
perror("unable to get portstatus");
}
status &= ~TIOCM_DTR; /* turn off DTR */
status &= ~TIOCM_RTS; /* turn off RTS */
if(ioctl(Cport[comport_number], TIOCMSET, &status) == -1)
{
perror("unable to set portstatus");
}
tcsetattr(Cport[comport_number], TCSANOW, old_port_settings + comport_number);
close(Cport[comport_number]);
}
/*
Constant Description
TIOCM_LE DSR (data set ready/line enable)
TIOCM_DTR DTR (data terminal ready)
TIOCM_RTS RTS (request to send)
TIOCM_ST Secondary TXD (transmit)
TIOCM_SR Secondary RXD (receive)
TIOCM_CTS CTS (clear to send)
TIOCM_CAR DCD (data carrier detect)
TIOCM_CD see TIOCM_CAR
TIOCM_RNG RNG (ring)
TIOCM_RI see TIOCM_RNG
TIOCM_DSR DSR (data set ready)
http://man7.org/linux/man-pages/man4/tty_ioctl.4.html
*/
int RS232_IsDCDEnabled(int comport_number)
{
int status;
ioctl(Cport[comport_number], TIOCMGET, &status);
if(status&TIOCM_CAR) return(1);
else return(0);
}
int RS232_IsCTSEnabled(int comport_number)
{
int status;
ioctl(Cport[comport_number], TIOCMGET, &status);
if(status&TIOCM_CTS) return(1);
else return(0);
}
int RS232_IsDSREnabled(int comport_number)
{
int status;
ioctl(Cport[comport_number], TIOCMGET, &status);
if(status&TIOCM_DSR) return(1);
else return(0);
}
void RS232_enableDTR(int comport_number)
{
int status;
if(ioctl(Cport[comport_number], TIOCMGET, &status) == -1)
{
perror("unable to get portstatus");
}
status |= TIOCM_DTR; /* turn on DTR */
if(ioctl(Cport[comport_number], TIOCMSET, &status) == -1)
{
perror("unable to set portstatus");
}
}
void RS232_disableDTR(int comport_number)
{
int status;
if(ioctl(Cport[comport_number], TIOCMGET, &status) == -1)
{
perror("unable to get portstatus");
}
status &= ~TIOCM_DTR; /* turn off DTR */
if(ioctl(Cport[comport_number], TIOCMSET, &status) == -1)
{
perror("unable to set portstatus");
}
}
void RS232_enableRTS(int comport_number)
{
int status;
if(ioctl(Cport[comport_number], TIOCMGET, &status) == -1)
{
perror("unable to get portstatus");
}
status |= TIOCM_RTS; /* turn on RTS */
if(ioctl(Cport[comport_number], TIOCMSET, &status) == -1)
{
perror("unable to set portstatus");
}
}
void RS232_disableRTS(int comport_number)
{
int status;
if(ioctl(Cport[comport_number], TIOCMGET, &status) == -1)
{
perror("unable to get portstatus");
}
int RS232_OpenComport(int comport_number, int baudrate, const char *mode
status &= ~TIOCM_RTS; /* turn off RTS */
if(ioctl(Cport[comport_number], TIOCMSET, &status) == -1)
{
perror("unable to set portstatus");
}
}
#else /* windows */
HANDLE Cport[16];
char comports[16][10]={"\\\\.\\COM1", "\\\\.\\COM2", "\\\\.\\COM3", "\\\\.\\COM4",
"\\\\.\\COM5", "\\\\.\\COM6", "\\\\.\\COM7", "\\\\.\\COM8",
"\\\\.\\COM9", "\\\\.\\COM10", "\\\\.\\COM11", "\\\\.\\COM12",
"\\\\.\\COM13", "\\\\.\\COM14", "\\\\.\\COM15", "\\\\.\\COM16"};
char mode_str[128];
int RS232_OpenComport(int comport_number, int baudrate, const char *mode)
{
if((comport_number>15)||(comport_number<0))
{
printf("illegal comport number\n");
return(1);
}
switch(baudrate)
{
case 110 : strcpy(mode_str, "baud=110");
break;
case 300 : strcpy(mode_str, "baud=300");
break;
case 600 : strcpy(mode_str, "baud=600");
break;
case 1200 : strcpy(mode_str, "baud=1200");
break;
case 2400 : strcpy(mode_str, "baud=2400");
break;
case 4800 : strcpy(mode_str, "baud=4800");
break;
case 9600 : strcpy(mode_str, "baud=9600");
break;
case 19200 : strcpy(mode_str, "baud=19200");
break;
case 38400 : strcpy(mode_str, "baud=38400");
break;
case 57600 : strcpy(mode_str, "baud=57600");
break;
case 115200 : strcpy(mode_str, "baud=115200");
break;
case 128000 : strcpy(mode_str, "baud=128000");
break;
case 256000 : strcpy(mode_str, "baud=256000");
break;
case 500000 : strcpy(mode_str, "baud=500000");
break;
case 1000000 : strcpy(mode_str, "baud=1000000");
break;
default : printf("invalid baudrate\n");
return(1);
break;
}
if(strlen(mode) != 3)
{
printf("invalid mode \"%s\"\n", mode);
return(1);
}
switch(mode[0])
{
case '8': strcat(mode_str, " data=8");
break;
case '7': strcat(mode_str, " data=7");
break;
case '6': strcat(mode_str, " data=6");
break;
case '5': strcat(mode_str, " data=5");
break;
default : printf("invalid number of data-bits '%c'\n", mode[0]);
return(1);
break;
}
switch(mode[1])
{
case 'N':
case 'n': strcat(mode_str, " parity=n");
break;
case 'E':
case 'e': strcat(mode_str, " parity=e");
break;
case 'O':
case 'o': strcat(mode_str, " parity=o");
break;
default : printf("invalid parity '%c'\n", mode[1]);
return(1);
break;
}
switch(mode[2])
{
case '1': strcat(mode_str, " stop=1");
break;
case '2': strcat(mode_str, " stop=2");
break;
default : printf("invalid number of stop bits '%c'\n", mode[2]);
return(1);
break;
}
strcat(mode_str, " dtr=on rts=on");
/*
http://msdn.microsoft.com/en-us/library/windows/desktop/aa363145%28v=vs.85%29.aspx
http://technet.microsoft.com/en-us/library/cc732236.aspx
*/
Cport[comport_number] = CreateFileA(comports[comport_number],
GENERIC_READ|GENERIC_WRITE,
0, /* no share */
NULL, /* no security */
OPEN_EXISTING,
0, /* no threads */
NULL); /* no templates */
if(Cport[comport_number]==INVALID_HANDLE_VALUE)
{
printf("unable to open comport\n");
return(1);
}
DCB port_settings;
memset(&port_settings, 0, sizeof(port_settings)); /* clear the new struct */
port_settings.DCBlength = sizeof(port_settings);
if(!BuildCommDCBA(mode_str, &port_settings))
{
printf("unable to set comport dcb settings\n");
CloseHandle(Cport[comport_number]);
return(1);
}
if(!SetCommState(Cport[comport_number], &port_settings))
{
printf("unable to set comport cfg settings\n");
CloseHandle(Cport[comport_number]);
return(1);
}
COMMTIMEOUTS Cptimeouts;
Cptimeouts.ReadIntervalTimeout = MAXDWORD;
Cptimeouts.ReadTotalTimeoutMultiplier = 0;
Cptimeouts.ReadTotalTimeoutConstant = 0;
Cptimeouts.WriteTotalTimeoutMultiplier = 0;
Cptimeouts.WriteTotalTimeoutConstant = 0;
if(!SetCommTimeouts(Cport[comport_number], &Cptimeouts))
{
printf("unable to set comport time-out settings\n");
CloseHandle(Cport[comport_number]);
return(1);
}
return(0);
}
int RS232_PollComport(int comport_number, unsigned char *buf, int size)
{
int n;
/* added the void pointer cast, otherwise gcc will complain about */
/* "warning: dereferencing type-punned pointer will break strict aliasing rules" */
ReadFile(Cport[comport_number], buf, size, (LPDWORD)((void *)&n), NULL);
return(n);
}
int RS232_SendByte(int comport_number, unsigned char byte)
{
int n;
WriteFile(Cport[comport_number], &byte, 1, (LPDWORD)((void *)&n), NULL);
if(n<0) return(1);
return(0);
}
int RS232_SendBuf(int comport_number, unsigned char *buf, int size)
{
int n;
if(WriteFile(Cport[comport_number], buf, size, (LPDWORD)((void *)&n), NULL))
{
return(n);
}
return(-1);
}
void RS232_CloseComport(int comport_number)
{
CloseHandle(Cport[comport_number]);
}
/*
http://msdn.microsoft.com/en-us/library/windows/desktop/aa363258%28v=vs.85%29.aspx
*/
int RS232_IsDCDEnabled(int comport_number)
{
int status;
GetCommModemStatus(Cport[comport_number], (LPDWORD)((void *)&status));
if(status&MS_RLSD_ON) return(1);
else return(0);
}
int RS232_IsCTSEnabled(int comport_number)
{
int status;
GetCommModemStatus(Cport[comport_number], (LPDWORD)((void *)&status));
if(status&MS_CTS_ON) return(1);
else return(0);
}
int RS232_IsDSREnabled(int comport_number)
{
int status;
GetCommModemStatus(Cport[comport_number], (LPDWORD)((void *)&status));
if(status&MS_DSR_ON) return(1);
else return(0);
}
void RS232_enableDTR(int comport_number)
{
EscapeCommFunction(Cport[comport_number], SETDTR);
}
void RS232_disableDTR(int comport_number)
{
EscapeCommFunction(Cport[comport_number], CLRDTR);
}
void RS232_enableRTS(int comport_number)
{
EscapeCommFunction(Cport[comport_number], SETRTS);
}
void RS232_disableRTS(int comport_number)
{
EscapeCommFunction(Cport[comport_number], CLRRTS);
}
#endif
void RS232_cputs(int comport_number, const char *text) /* sends a string to serial port */
{
while(*text != 0) RS232_SendByte(comport_number, *(text++));
}
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