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/***********************************************************************
* avrp - Atmel AVR programming software to use with Atmel's
* serial-port programmers.
* Copyright (C) 1997-1998 Jon Anders Haugum
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*
* Author of avrp can be reached at:
* email: jonah@colargol.tihlde.hist.no
* www: http://www.colargol.tihlde.hist.no/~jonah/el/avrp.html
* Postal address: Jon Anders Haugum
* vre Mllenbergsgt 52
* 7014 Trondheim
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <termios.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "avrp.h"
#define BAUDRATE B19200
struct Ser
{
char *Name;
int fd;
struct termios oldtio, newtio;
};
void *OpenSer(char *SerPort)
{
struct Ser *Ser = NULL;
Ser = (struct Ser *)malloc(sizeof(struct Ser));
if(Ser)
{
Ser->Name = SerPort;
if((Ser->fd = open(SerPort, O_RDWR | O_NOCTTY )) != -1)
{
tcgetattr(Ser->fd, &Ser->oldtio); /* save current port settings */
bzero(&Ser->newtio, sizeof(Ser->newtio));
Ser->newtio.c_cflag = CS8 | CLOCAL | CREAD;
cfsetispeed(&Ser->newtio, BAUDRATE);
cfsetospeed(&Ser->newtio, BAUDRATE);
Ser->newtio.c_iflag = IGNPAR;
Ser->newtio.c_oflag = 0;
/* set input mode (non-canonical, no echo,...) */
Ser->newtio.c_lflag = 0;
Ser->newtio.c_cc[VTIME] = 3; /* Timeout in value * 0.1s */
Ser->newtio.c_cc[VMIN] = 0;
tcflush(Ser->fd, TCIFLUSH);
tcsetattr(Ser->fd, TCSANOW, &Ser->newtio);
}
else
{
perror(SerPort);
free(Ser);
Ser = NULL;
}
}
else
printf("Error: Unable to allocate memory\n");
return(Ser);
}
void CloseSer(void *Ser)
{
tcsetattr(((struct Ser *)Ser)->fd, TCSANOW, &((struct Ser *)Ser)->oldtio);
close(((struct Ser *)Ser)->fd);
free(Ser);
}
void SerWriteByte(void *Ser, unsigned char Byte)
{
write(((struct Ser *)Ser)->fd, &Byte, 1);
}
int SerReadData(void *Ser, unsigned char *Buff, int Count)
{
int ret;
ret = read(((struct Ser *)Ser)->fd, Buff, Count);
if(ret == -1)
{
perror(((struct Ser *)Ser)->Name);
return(0);
}
return(ret);
}
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