Sorry I forgot to attach my sample program in the first mail. here I have
attached that.
Hi Daniel,
Thank you very much once again.Even though you don't know what my
problem is, you are trying to help me. Thank you very much. Here I have
attached a sample code which explains what I am trying to do and what the
problem I am facing. I have given comments to explain my problem. please
have a look at this program and try to help me!.
On 2/19/07, SaiKamesh Rathinasabapathy <[EMAIL PROTECTED]> wrote:
On 2/18/07, Daniel Elstner <[EMAIL PROTECTED]> wrote:
>
> Am Samstag, den 17.02.2007, 19:19 +0530 schrieb SaiKamesh
> Rathinasabapathy:
>
> > I have already written a program in c++, which reads the data from the
> > serial port.
> > So I have no problem in reading the data from the barcode reader which
>
> > is connected to the serial port.
>
> Okay, then I don't know what your problem is. The thing is, the answer
> to your question very much depends on the context. Without any context,
> it's nearly impossible to help you. The answer might boil down to "hide
>
> it" or "delete it", but I reckon you'd have figured that out by yourself
> if it really was that trivial.
>
> So, why don't you send us a sample program that roughly shows what
> you're actually trying to do? And please CC to the list, too.
>
> > My problem is, when I run my application a window should be opened,
> > that has a label on it "Scan the barcode using scanner". then I have
> > to read the barcode, after reading the barcode the window should
> > automatically be closed, then a new window should be opened.
> > I don't know how to close the first window automatically, after
> > reading the barcode. plz help me to so this.
>
> > If possible send me sample program.
>
> I already said that I don't have such a sample program.
>
> --Daniel
>
>
> Hi Daniel,
Thank you very much once again.Even though you don't know what my
problem is, you are trying to help me. Thank you very much. Here I have
attached a sample code which explains what I am trying to do and what the
problem I am facing. I have given comments to explain my problem. please
have a look at this program and try to help me!.
#include <termios.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/signal.h>
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>
//library for reading the infos from the config file
#include "simpleini/SimpleIni.h"
//--------------------------------------------------
#include <mysql.h>
#define host "localhost"
#define username "root"
#define password "admin"
#define db "IrisDB"
#define FALSE 0
#define TRUE 1
volatile int STOP = FALSE;
int error;
using namespace std;
#include <gtkmm.h>
class DeviceInterface : public Gtk::Window
{
public:
long BAUD/*for device*/, DATABITS, STOPBITS, PARITYON, PARITY, BAUDRATE/*for keyboard*/;
int BaudRate, Data_Bits, Stop_Bits, Parity;
static int wait_flag;
int fd, tty;
struct termios oldtio, newtio; //place for old and new port settings for serial port
struct termios oldkey, newkey;//place tor old and new port settings for keyboardteletype
struct sigaction saio; //definition of signal action
Gtk::VBox vbox;
Gtk::Entry entry;// Entry which is used to display the login info.
Gtk::Window wind;//window which is going to be displayed first,this window should be closed after recieving the signal from the serial port
DeviceInterface()
{
//the following are placed in second window------------
maximize();
add(vbox);
vbox.pack_start(entry, Gtk::PACK_SHRINK);
show_all_children();
//-----------------------------------------------------
CSimpleIniA ini(false, false, false);
SI_Error rc = ini.LoadFile("ExampleConfig.ini");
//reading Barcode Reader info from config file ------
BaudRate = atoi(ini.GetValue("Barcode//for first windowReader Configuration", "BaudRate", NULL));
Data_Bits = atoi(ini.GetValue("BarcodeReader Configuration", "Data_Bits", NULL));
Stop_Bits = atoi(ini.GetValue("BarcodeReader Configuration", "Stop_Bits", NULL ));
Parity = atoi(ini.GetValue("BarcodeReader Configuration", "Parity", NULL));
//----------------------------------------------------
//reading Keyboard info from config file ------------
BAUDRATE = atol(ini.GetValue("Keyboard Configuration", "BAUDRATE", NULL));
//----------------------------------------------------
wait_flag = TRUE;
}
/*----------------------------------------------------------------------------*
* Serial port: initialise io_port, set baud rate, set data bits, one stop bit*/
int rs_initialise (int io_port/*, const long int BaudRate, const char parity*/)
{
// set new port settings for non-canonical input processing //must be NOCTTY
newkey.c_cflag = BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD;
newkey.c_iflag = IGNPAR;
newkey.c_oflag = 0;
newkey.c_lflag = 0; //ICANON;
newkey.c_cc[VMIN]=1;
newkey.c_cc[VTIME]=0;
tcflush(tty, TCIFLUSH);
tcsetattr(tty,TCSANOW,&newkey);
switch (BaudRate)
{
case 38400:
default:
BAUD = B38400;
break;
case 19200:
BAUD = B19200;
break;
case 9600:
BAUD = B9600;
break;
case 4800:
BAUD = B4800;
break;
case 2400:
BAUD = B2400;
break;
case 1800:
BAUD = B1800;
break;
case 1200:
BAUD = B1200;
break;
case 600:
BAUD = B600;
break;
case 300:
BAUD = B300;
break;
case 200:
BAUD = B200;
break;
case 150:
BAUD = B150;
break;
case 134:
BAUD = B134;
break;
case 110:
BAUD = B110;
break;
case 75:
BAUD = B75;
break;
case 50:
BAUD = B50;
break;
} //end of switch baud_rate
switch (Data_Bits)
{
case 8:
default:
DATABITS = CS8;
break;
case 7:
DATABITS = CS7;
break;
case 6:
DATABITS = CS6;
break;
case 5:
DATABITS = CS5;
break;
} //end of switch data_bits
switch (Stop_Bits)
{
case 1:
default:
STOPBITS = 0;
break;
case 2:
STOPBITS = CSTOPB;
break;
} //end of switch stop bits
switch (Parity)
{
case 0:
default: //none
PARITYON = 0;
PARITY = 0;
break;
case 1: //odd
PARITYON = PARENB;
PARITY = PARODD;
break;
case 2: //even
PARITYON = PARENB;
PARITY = 0;
break;
} //end of switch parity
//open the device(com port) to be non-blocking (read will return immediately)
fd = open("/dev/ttyS0", O_RDWR | O_NOCTTY | O_NONBLOCK);
if (fd < 0)
{
perror("/dev/ttyS0");
return 0;
}
//install the serial handler before making the device asynchronous
saio.sa_handler = signal_handler_IO;
sigemptyset(&saio.sa_mask); //saio.sa_mask = 0;
saio.sa_flags = 0;
saio.sa_restorer = NULL;
sigaction(SIGIO,&saio,NULL);
// allow the process to receive SIGIO
fcntl(fd, F_SETOWN, getpid());
// Make the file descriptor asynchronous (the manual page says only
// O_APPEND and O_NONBLOCK, will work with F_SETFL...)
fcntl(fd, F_SETFL, O_ASYNC);//FASYNC);
tcgetattr(fd,&oldtio); // save current port settings
// set new port settings for canonical input processing
newtio.c_cflag = BAUD | CRTSCTS | DATABITS | STOPBITS | PARITYON | PARITY | CLOCAL | CREAD;
newtio.c_iflag = IGNPAR;
newtio.c_oflag = 0;
newtio.c_lflag = 0; //ICANON;
newtio.c_cc[VMIN]=1;
newtio.c_cc[VTIME]=0;
tcflush(fd, TCIFLUSH);
tcsetattr(fd,TCSANOW,&newtio);
return 1; // OK
}
/*----------------------------------------------------------------------------*
* Serial port: terminate io_port, sets DTR and RTS to low */
void rs_terminate(const int io_port)
{
// restore old port settings
tcsetattr(fd,TCSANOW,&oldtio);
tcsetattr(tty,TCSANOW,&oldkey);
close(fd); //close the com port
}
/*----------------------------------------------------------------------------*
* Serial port: read character from io_port (ignored in this version) */
char rs_getch(const int io_port)
{
static char buf[255]; // buffer for where data is put
static int index = 0, count = 0;
// check if data already in input buffer - if so return a character
if(count>0) { count--; return buf[index++];}
// otherwise check if any characters receivedfrom serial line
if (wait_flag==FALSE) //if input is available
{
count = read(fd,buf,255);
wait_flag = TRUE; /* wait for new input */
index=0;
count--;
//count++;
return buf[index++]; // return first character
}
return 0; // return 0 if no character read
}
/************************************************** *************************
* signal handler. sets wait_flag to FALSE, to indicate above loop that *
* characters have been received. *
************************************************** *************************/
static void signal_handler_IO (int status)
{
// printf("\n received SIGIO signal.\n");
wait_flag = FALSE;
}
};
int DeviceInterface::wait_flag;//this is a static variable, thats y
// main terminal program
int main(int argc, char *argv[])
{
Gtk::Main kit(argc, argv);
DeviceInterface obj;
Gtk::Label label1("SWIPE THE CARD TO LOG IN");//for first window
obj.wind.maximize();//for first window
obj.wind.add(label1);//for first window
obj.wind.show_all_children();//for first window
int temp = 0;
char buffer[600];
int i = 0;
int port = 1;
error=0;
// open the RS232 serial line
if(!obj.rs_initialise(port)) { exit(1); }//initializing the serial port
Gtk::Main::run(obj.wind);// displaying the first window
char letter;
while(!STOP)
{
if((letter=obj.rs_getch(port))>0) // getting the data from the serial port charecter by charecter and storing those values in a charecter array.
{
buffer[i] = letter;
i++;
}
if(strlen(buffer) >= 119)
{
temp = 1;
break;
}
}
if(temp == 1)
{
obj.wind.hide();//here i want to close the first window, but it is not working.
}
MYSQL *conn1;
MYSQL_RES *res_set1;
MYSQL_ROW row;
conn1 = mysql_init(NULL);// initializing the connection
mysql_real_connect(conn1,host,username,password,db,0,NULL,0);
mysql_query(conn1, ("select * from tblLogin"));
res_set1 = mysql_store_result(conn1);
if((row = mysql_fetch_row(res_set1)) != NULL)
{
if(strcmp(row[0], buffer) == 0)
{
obj.entry.set_text("You are a valid user");//this message will be displayed in the entry of the second window,in the case of valid user
}
else
{
obj.entry.set_text("You are not a valid user");//this message will be displayed in the entry of the second window,in the case of invalid user
}
}
Gtk::Main::run(obj);//this displays the second window, which contains an Gtk::entry on it,in that entry "you are a valid user" or "you are not a valid user" message will be displayed.
obj.rs_terminate(port);//closing the serial port
return 0;
}
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