/****************************************************************************** * * Copyright (c) 2008 Shanghai IS Software * * All rights reserved * * $Revision$ * * $LastChangedBy$ * * $LastChangedData$ * * Description: * * Revision History: * 2008/08/28 14:33 by lcj * #1.created * *****************************************************************************/#include "modbus_rtu/modbus.h"/***	brief***/int  speed_arr[] = {B115200,B57600,B38400,B19200,B9600,B4800,B2400,B1200,B300,						B200,B150,B75,B50,B0};int name_arr[] = {115200,57600,38400,19200,9600,4800,2400,1200,300,						200,150,75,50,0};void set_speed(int fd,int speed){	int i;	int status;	struct termios opt;	tcgetattr(fd,&opt);	for ( i = 0; i < sizeof(speed_arr) / sizeof(int); i++ )	{ 		if ( speed == name_arr[i] ) 		{			tcflush(fd, TCIOFLUSH);			cfsetispeed(&opt,speed_arr[i]);			cfsetospeed(&opt,speed_arr[i]);			status = tcsetattr(fd,TCSANOW,&opt);			if  ( status != 0 )			{				perror("tcsetattr fd1");				return ;			}			tcflush(fd,TCIOFLUSH); 		}	}		}/***	brief ***/int set_parity(int fd, int databits,int stopbits, int parity){	struct termios options;	if ( tcgetattr( fd, &options) !=  0 ) 	{		perror("setupserial 1");		return (FALSE);	}	options.c_cflag &= ~CSIZE;	switch ( databits )	{		case 7:			options.c_cflag |= CS7;			break;		case 8:			options.c_cflag |= CS8;			break;		default:			fprintf(stderr,"Unsupported data size\n");			return  FALSE;	}	switch ( parity )	{		case 'n':		case 'N':			options.c_cflag &= ~PARENB;			options.c_iflag &= ~INPCK;			break;		case 'o':		case 'O':			options.c_cflag |= (PARODD | PARENB );			options.c_iflag |= INPCK;			break;		case 'e':		case 'E':			options.c_cflag |= PARENB;			options.c_cflag &= ~PARODD;			options.c_iflag |= INPCK;			break;		case 's':		case 'S':			options.c_cflag &= ~PARENB;			options.c_cflag &= ~CSTOPB;			break;		default:			fprintf(stderr,"Unsupported parity\n");			return FALSE;			}	switch (stopbits)	{		case 1:			options.c_cflag &= ~CSTOPB;			break;		case 2:			options.c_cflag |= CSTOPB;			break;		default:			fprintf(stderr,"Unsupported stop bits\n");			return FALSE;	}	if ( parity != 'n' )		options.c_iflag |= INPCK;	options.c_cc[VTIME] = 150;	options.c_cc[VMIN] = 0;		tcflush(fd,TCIFLUSH);	options.c_lflag  &= ~(ICANON | ECHO | ECHOE | ISIG);	options.c_oflag  &= ~OPOST;		if  ( tcsetattr(fd, TCSANOW,&options) != 0 )	{		perror("setupserial 3");		return FALSE;	}	return TRUE;}