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/* Copyright 2012, Sebastian Reichel <sre@ring0.de>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
public errordomain SerialError {
IO_ERROR,
ERRNO,
}
public class SerialDevice : Device {
private Posix.termios newtio;
private Posix.termios restoretio;
private int fd;
public void setup(string device, int rate, int bits, int stopbits) throws SerialError {
Posix.speed_t baudrate = Posix.B9600;
fd = Posix.open(device, Posix.O_RDWR);
if(fd < 0)
throw new SerialError.IO_ERROR("Could not open device!");
Posix.tcflush(fd, Posix.TCIOFLUSH);
Posix.tcgetattr(fd, out restoretio);
/* apply settings */
switch(rate) {
case 300:
baudrate = Posix.B300;
break;
case 600:
baudrate = Posix.B600;
break;
case 1200:
baudrate = Posix.B1200;
break;
case 2400:
baudrate = Posix.B2400;
break;
case 4800:
baudrate = Posix.B4800;
break;
case 9600:
baudrate = Posix.B9600;
break;
case 19200:
baudrate = Posix.B19200;
break;
case 38400:
baudrate = Posix.B38400;
break;
case 57600:
baudrate = Posix.B57600;
break;
case 115200:
baudrate = Posix.B115200;
break;
case 230400:
baudrate = Posix.B230400;
break;
default:
/* not supported */
rate = 9600;
break;
}
Posix.cfsetospeed(ref newtio, baudrate);
Posix.cfsetispeed(ref newtio, baudrate);
switch(bits) {
case 5:
newtio.c_cflag = (newtio.c_cflag & ~Posix.CSIZE) | Posix.CS5;
break;
case 6:
newtio.c_cflag = (newtio.c_cflag & ~Posix.CSIZE) | Posix.CS6;
break;
case 7:
newtio.c_cflag = (newtio.c_cflag & ~Posix.CSIZE) | Posix.CS7;
break;
case 8:
default:
newtio.c_cflag = (newtio.c_cflag & ~Posix.CSIZE) | Posix.CS8;
break;
}
newtio.c_cflag |= Posix.CLOCAL | Posix.CREAD;
newtio.c_cflag &= ~(Posix.PARENB | Posix.PARODD);
/* TODO: parity */
newtio.c_cflag &= ~Linux.Termios.CRTSCTS;
if(stopbits == 2)
newtio.c_cflag |= Posix.CSTOPB;
else
newtio.c_cflag &= ~Posix.CSTOPB;
newtio.c_iflag = Posix.IGNBRK;
newtio.c_lflag = 0;
newtio.c_oflag = 0;
newtio.c_cc[Posix.VTIME]=1;
newtio.c_cc[Posix.VMIN]=1;
newtio.c_lflag &= ~(Posix.ECHONL|Posix.NOFLSH);
int mcs=0;
Posix.ioctl(fd, Linux.Termios.TIOCMGET, out mcs);
mcs |= Linux.Termios.TIOCM_RTS;
Posix.ioctl(fd, Linux.Termios.TIOCMSET, out mcs);
Posix.tcsetattr(fd, Posix.TCSANOW, newtio);
}
~SerialDevice() {
Posix.close(fd);
}
protected ssize_t read(void *buf, size_t count) {
return Posix.read(fd, buf, count);
}
protected ssize_t write(void *buf, size_t count) {
ssize_t size = Posix.write(fd, buf, count);
return size;
}
}
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