hi,
um's einfacher zu machen hier der code:
(das ist linux nicht win)
gruss
nomad
//================================================== =======================//
// serial.c //
// -------- //
// //
// compile with : cc serial.c -o serial //
// start with : ./serial //
// //
// for : serial communications from system via serial //
// interface to a microcontroller MC68HC05 //
// BS2-Stamp, C-Control, GPS-Receiver //
//************************************************** ************************/
// THIS PROGRAMM IS UNDER THE GNU-LICENCE //
/************************************************** *************************
* *
* 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. *
* *
************************************************** **************************
* Contributions: *
* The Linux Serial Programming HOWTO by *
* Peter H. Baumann, Peter.Baumann@dlr.de v1.0, 22 January 1998 *
* This document describes how to program communications with *
* devices over a serial port on a Linux box. *
************************************************** **************************
03.06. -> interduction communications
Canonical Input Processing
1) schreiben gem serial_8.c
2) lesen gem serial_6/6a.c
=> einbau von Sender > schreiben auf mc
einbau von Reader > lesen von mc
************************************************** **************************/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <fcntl.h>
#include <string.h>
#include <ctype.h>
#include <termios.h>
#include <unistd.h>
#include <sys/signal.h>
#include <sys/types.h>
#include <errno.h>
#define BAUDRATE B9600 // baudrate settings
#define MODEMDEVICE "/dev/ttyS0" // change this definition for the correct port
#define _POSIX_SOURCE 1 // POSIX compliant source
#define FALSE 0
#define TRUE 1
typedef unsigned char byte;
int STOP=FALSE;
int fr,fw,c, res;
struct termios oldtio,newtio;
char buf[255];
char *bufcommand = buf;
char *bufcommand1 = buf;
char *recbuf = "1\n";
int rescommand;
int command;
int i;
char *send0 = "0\r";
char *send1 = "1\r";
char *send2 = "2\r";
char *send3 = "3\r";
char *send4 = "4\r";
char *send5 = "5\r";
char *send6 = "6\r";
char *send7 = "7\r";
char *send8 = "8\r";
char *send9 = "9\r";
char *sendData;
/************************************************** *************************
* Don't forget to give the appropriate serial ports the right permissions *
* (e. g.: chmod a+rw /dev/ttyS0)! *
* baudrate settings are defined in <asm/termbits.h>, which is *
* included by <termios.h> *
************************************************** *************************/
//from conio.h
void gotoxy(int x, int y) { printf("\033[%d;%dH", y, x); fflush(stdout); }
void clrscr(void) { printf("\033[H\033[J"); fflush(stdout); }
Reader()
{
fr = open(MODEMDEVICE, O_RDONLY | O_NOCTTY );
if(fr <0)
{
perror(MODEMDEVICE);
printf("cannot open ttyS0");
exit(-1);
}
tcgetattr(fr,&oldtio); // save current serial port settings
bzero(&newtio,sizeof(newtio)); // clear struct for new port settings
newtio.c_cflag = BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD;
newtio.c_iflag = IGNPAR | ICRNL; // Raw output.
newtio.c_oflag = 0;
newtio.c_lflag = ICANON;
newtio.c_cc[VINTR] = 0; /* Ctrl-c */
newtio.c_cc[VQUIT] = 0; /* Ctrl-\ */
newtio.c_cc[VERASE] = 0; /* del */
newtio.c_cc[VKILL] = 0; /* @ */
newtio.c_cc[VEOF] = 4; /* Ctrl-d */
newtio.c_cc[VTIME] = 0; /* inter-character timer unused */
newtio.c_cc[VMIN] = 1; /* blocking read until 1 character arrives */
newtio.c_cc[VSWTC] = 0; /* '\0' */
newtio.c_cc[VSTART] = 0; /* Ctrl-q */
newtio.c_cc[VSTOP] = 0; /* Ctrl-s */
newtio.c_cc[VSUSP] = 0; /* Ctrl-z */
newtio.c_cc[VEOL] = 0; /* '\0' */
newtio.c_cc[VREPRINT] = 0; /* Ctrl-r */
newtio.c_cc[VDISCARD] = 0; /* Ctrl-u */
newtio.c_cc[VWERASE] = 0; /* Ctrl-w */
newtio.c_cc[VLNEXT] = 0; /* Ctrl-v */
newtio.c_cc[VEOL2] = 0; /* '\0' */
// now clean the modem line and activate the settings for the port
tcflush(fr, TCIFLUSH);
tcsetattr(fr,TCSANOW,&newtio);
gotoxy(2,8);
printf("*************************************");
res = read(fr,buf,255);
buf[res]=0; /* set end of string, so we can printf */
gotoxy(10,15);
printf("In: %s", buf); // printf(":%s:%d\n", buf, res);
gotoxy(10,16);
printf("Res: %d",res);
rescommand = res;
gotoxy(10,18);
printf("CommandoBuf: %s",buf);
gotoxy(10,20);
printf("Commr: %d\n",rescommand);
gotoxy(2,24);
printf("*************************************");
/* restore the old port settings */
tcsetattr(fr,TCSANOW,&oldtio);
close(fr);
}
Sender()
{
gotoxy(40,4);
scanf("%d",&command);
gotoxy(10,6);
printf("Input: %d",command);
gotoxy(40,4);
printf(" ");
if(command==0) sendData = send0;
if(command==1) sendData = send1;
if(command==2) sendData = send2;
if(command==3) sendData = send3;
if(command==4) sendData = send4;
if(command==5) sendData = send5;
if(command==6) sendData = send6;
if(command==7) sendData = send7;
if(command==8) sendData = send8;
if(command==9) sendData = send9;
// sendData = "614\r";
gotoxy(10,7);
printf("SendData: %s",sendData);
fw = open(MODEMDEVICE, O_WRONLY | O_NOCTTY ); // old O_RDWR
if(fw <0)
{
perror(MODEMDEVICE);
printf("cannot open ttyS0");
exit(-1);
}
tcgetattr(fw,&oldtio); // save current serial port settings
bzero(&newtio,sizeof(newtio)); // clear struct for new port settings
newtio.c_cflag = BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD;
newtio.c_iflag = IGNPAR | ICRNL; // Raw output.
newtio.c_oflag = 0;
newtio.c_lflag = ICANON;
newtio.c_cc[VINTR] = 0; /* Ctrl-c */
newtio.c_cc[VQUIT] = 0; /* Ctrl-\ */
newtio.c_cc[VERASE] = 0; /* del */
newtio.c_cc[VKILL] = 0; /* @ */
newtio.c_cc[VEOF] = 4; /* Ctrl-d */
newtio.c_cc[VTIME] = 0; /* inter-character timer unused */
newtio.c_cc[VMIN] = 1; /* blocking read until 1 character arrives */
newtio.c_cc[VSWTC] = 0; /* '\0' */
newtio.c_cc[VSTART] = 0; /* Ctrl-q */
newtio.c_cc[VSTOP] = 0; /* Ctrl-s */
newtio.c_cc[VSUSP] = 0; /* Ctrl-z */
newtio.c_cc[VEOL] = 0; /* '\0' */
newtio.c_cc[VREPRINT] = 0; /* Ctrl-r */
newtio.c_cc[VDISCARD] = 0; /* Ctrl-u */
newtio.c_cc[VWERASE] = 0; /* Ctrl-w */
newtio.c_cc[VLNEXT] = 0; /* Ctrl-v */
newtio.c_cc[VEOL2] = 0; /* '\0' */
// now clean the modem line and activate the settings for the port
tcflush(fw, TCIFLUSH);
tcsetattr(fw,TCSANOW,&newtio);
gotoxy(2,8);
printf("*************************************");
write(fw,sendData,2); // old 2 or res or 255
if(command == 0)
{
/* restore the old port settings */
tcsetattr(fw,TCSANOW,&oldtio);
close(fw);
gotoxy(10,22);
printf("Command was <0> Close Serial_Device and exit(0)");
gotoxy(2,24);
printf("*************************************\n");
exit(0);
}
gotoxy(2,24);
printf("*************************************");
/* restore the old port settings */
tcsetattr(fw,TCSANOW,&oldtio);
close(fw);
gotoxy(10,22);
printf("Close Serial_Device");
} // end Sender
main()
{
clrscr();
gotoxy(2,1);
printf("The Serial-Communications");
gotoxy(10,4);
printf("Input for Commands: ");
gotoxy(10,5);
printf("(0-9) 0=Exit, 1-9=Commands");
do
{
Sender(); // schreiben
Reader(); // lesen
}while(command > 0);
} // end pgm
/************************************************** *************************/