mirror of
https://github.com/Klipper3d/klipper.git
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315 lines
7.0 KiB
C
315 lines
7.0 KiB
C
/*
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***************************************************************************
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*
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* Author: Teunis van Beelen
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*
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* Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 Teunis van Beelen
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*
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* Email: teuniz@gmail.com
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*
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***************************************************************************
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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***************************************************************************
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*/
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/* Last revision: November 22, 2017 */
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/* For more info and how to use this library, visit: http://www.teuniz.net/RS-232/ */
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#include "rs232.h"
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#include <string.h>
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#include <stdio.h>
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#if defined(__linux__) || defined(__FreeBSD__) || defined(__APPLE__) /* Linux & FreeBSD */
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int tty_fd;
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struct termios old_termios;
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struct termios new_termios;
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int RS232_OpenComport(char *comport) {
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char str[64]= "/dev/";
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strcat(str, comport);
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tty_fd = open(str, O_RDWR | O_NOCTTY);
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if (tty_fd < 0) {
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fprintf(stderr, "error, counldn't open [%s]\n", str);
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return 1;
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}
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if (tcgetattr(tty_fd, &old_termios) != 0) {
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fprintf(stderr, "tcgetattr(fd, &old_termios) failed: %s\n", strerror(errno));
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return 1;
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}
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memset(&new_termios, 0, sizeof(new_termios));
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new_termios.c_iflag = IGNPAR;
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new_termios.c_oflag = 0;
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new_termios.c_cflag = CS8 | CREAD | CLOCAL | HUPCL;
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new_termios.c_lflag = 0;
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new_termios.c_cc[VINTR] = 0;
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new_termios.c_cc[VQUIT] = 0;
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new_termios.c_cc[VERASE] = 0;
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new_termios.c_cc[VKILL] = 0;
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new_termios.c_cc[VEOF] = 4;
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new_termios.c_cc[VTIME] = 0;
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new_termios.c_cc[VMIN] = 1;
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//new_termios.c_cc[VSWTC] = 0;
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new_termios.c_cc[VSTART] = 0;
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new_termios.c_cc[VSTOP] = 0;
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new_termios.c_cc[VSUSP] = 0;
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new_termios.c_cc[VEOL] = 0;
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new_termios.c_cc[VREPRINT] = 0;
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new_termios.c_cc[VDISCARD] = 0;
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new_termios.c_cc[VWERASE] = 0;
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new_termios.c_cc[VLNEXT] = 0;
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new_termios.c_cc[VEOL2] = 0;
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if (cfsetispeed(&new_termios, B1200) != 0) {
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fprintf(stderr, "cfsetispeed(&new_termios, B1200) failed: %s\n", strerror(errno));
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return 1;
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}
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if (cfsetospeed(&new_termios, B1200) != 0) {
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fprintf(stderr, "cfsetospeed(&new_termios, B1200) failed: %s\n", strerror(errno));
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return 1;
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}
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if (tcsetattr(tty_fd, TCSANOW, &new_termios) != 0) {
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fprintf(stderr, "tcsetattr(fd, TCSANOW, &new_termios) failed: %s\n", strerror(errno));
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return 1;
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}
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return 0;
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//======================================================================================
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}
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int RS232_SendByte(unsigned char byte) {
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int n = write(tty_fd, &byte, 1);
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if(n < 0) {
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if(errno == EAGAIN) {
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return 0;
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} else {
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return 1;
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}
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}
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return(0);
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}
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/*
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int RS232_ReadByte() {
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unsigned char c;
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if (read(tty_fd,&c,1)>0) {
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return c;
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}
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return -1;
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}
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*/
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void RS232_CloseComport() {
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tcsetattr(tty_fd, TCSANOW, &old_termios);
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close(tty_fd);
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}
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void RS232_enableDTR() {
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int status;
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if(ioctl(tty_fd, TIOCMGET, &status) == -1) {
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perror("unable to get portstatus");
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}
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status |= TIOCM_DTR; /* turn on DTR */
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if(ioctl(tty_fd, TIOCMSET, &status) == -1) {
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perror("unable to set portstatus");
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}
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}
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void RS232_disableDTR()
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{
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int status;
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if(ioctl(tty_fd, TIOCMGET, &status) == -1) {
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perror("unable to get portstatus");
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}
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status &= ~TIOCM_DTR; /* turn off DTR */
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if(ioctl(tty_fd, TIOCMSET, &status) == -1) {
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perror("unable to set portstatus");
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}
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}
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void RS232_enableRTS()
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{
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int status;
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if(ioctl(tty_fd, TIOCMGET, &status) == -1) {
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perror("unable to get portstatus");
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}
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status |= TIOCM_RTS; /* turn on RTS */
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if(ioctl(tty_fd, TIOCMSET, &status) == -1) {
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perror("unable to set portstatus");
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}
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}
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void RS232_disableRTS() {
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int status;
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if(ioctl(tty_fd, TIOCMGET, &status) == -1) {
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perror("unable to get portstatus");
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}
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status &= ~TIOCM_RTS; /* turn off RTS */
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if(ioctl(tty_fd, TIOCMSET, &status) == -1) {
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perror("unable to set portstatus");
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}
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}
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void RS232_send_magic(){
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write(tty_fd,"1EAF",4);
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}
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#else /* windows */
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HANDLE Cport;
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char mode_str_2[] = "baud=9600 data=8 parity=n stop=1 dtr=off rts=off";
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int RS232_OpenComport(char *comport)
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{
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//printf("%s\n %s\n %s\n %p\n", mode_str_2, comports[comport_number], comport, Cport);
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char str[32] = "\\\\.\\";
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strcat(str, comport);
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//printf("%s\n", str);
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Cport = CreateFileA(str,
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GENERIC_READ|GENERIC_WRITE,
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0, /* no share */
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NULL, /* no security */
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OPEN_EXISTING,
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0, /* no threads */
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NULL); /* no templates */
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if(Cport==INVALID_HANDLE_VALUE)
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{
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//printf("> unable to open comport\n");
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return(1);
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}
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DCB port_settings;
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memset(&port_settings, 0, sizeof(port_settings)); /* clear the new struct */
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port_settings.DCBlength = sizeof(port_settings);
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if(!BuildCommDCBA(mode_str_2, &port_settings))
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{
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printf("> unable to set comport dcb settings\n");
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CloseHandle(Cport);
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return(1);
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}
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if(!SetCommState(Cport, &port_settings))
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{
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printf("> unable to set comport cfg settings\n");
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CloseHandle(Cport);
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return(1);
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}
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COMMTIMEOUTS Cptimeouts;
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Cptimeouts.ReadIntervalTimeout = MAXDWORD;
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Cptimeouts.ReadTotalTimeoutMultiplier = 0;
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Cptimeouts.ReadTotalTimeoutConstant = 0;
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Cptimeouts.WriteTotalTimeoutMultiplier = 0;
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Cptimeouts.WriteTotalTimeoutConstant = 0;
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if(!SetCommTimeouts(Cport, &Cptimeouts))
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{
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printf("> unable to set comport time-out settings\n");
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CloseHandle(Cport);
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return(1);
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}
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return(0);
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}
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int RS232_SendByte(unsigned char byte)
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{
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int n;
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WriteFile(Cport, &byte, 1, (LPDWORD)((void *)&n), NULL);
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if(n<0) return(1);
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return(0);
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}
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void RS232_CloseComport()
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{
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CloseHandle(Cport);
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}
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void RS232_enableDTR()
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{
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EscapeCommFunction(Cport, SETDTR);
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}
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void RS232_disableDTR()
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{
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EscapeCommFunction(Cport, CLRDTR);
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}
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void RS232_enableRTS()
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{
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EscapeCommFunction(Cport, SETRTS);
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}
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void RS232_disableRTS()
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{
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EscapeCommFunction(Cport, CLRRTS);
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}
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void RS232_send_magic()
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{
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int n;
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WriteFile(Cport, "1EAF", 4, (LPDWORD)((void *)&n), NULL);
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}
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#endif
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