1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
3 /* serial port functions
5 * Author: Chris Toshok <toshok@ximian.com>
13 #include <sys/ioctl.h>
17 /* This is a copy of System.IO.Ports.Handshake */
22 RequestToSendXOnXOff = 3
25 /* This is a copy of System.IO.Ports.Parity */
34 /* This is a copy of System.IO.Ports.StopBits */
42 /* This is a copy of System.IO.Ports.SerialSignal */
44 Cd = 0, /* Carrier detect */
45 Cts = 1, /* Clear to send */
46 Dsr = 2, /* Data set ready */
47 Dtr = 3, /* Data terminal ready */
48 Rts = 4 /* Request to send */
52 open_serial (char* devfile)
55 struct termios newtio;
57 fd = open (devfile, O_RDWR);
62 newtio.c_cflag = CLOCAL | CREAD;
67 tcflush(fd, TCIOFLUSH);
68 tcsetattr(fd,TCSANOW,&newtio);
70 fcntl (fd, F_SETFL, O_NONBLOCK);
76 close_serial (int unix_fd)
82 read_serial (int fd, guchar *buffer, int offset, int count, int timeout)
88 ufd.events = POLLHUP | POLLIN | POLLERR;
90 poll (&ufd, 1, timeout);
92 if ((ufd.revents & POLLIN) != POLLIN) {
96 n = read (fd, buffer + offset, count);
102 write_serial (int fd, guchar *buffer, int offset, int count, int timeout)
109 ufd.events = POLLHUP | POLLOUT | POLLERR;
111 poll (&ufd, 1, timeout);
113 if ((ufd.revents & POLLOUT) != POLLOUT) {
117 n = write (fd, buffer + offset, count);
121 discard_buffer (int fd, gboolean input)
123 tcflush(fd, input ? TCIFLUSH : TCOFLUSH);
127 set_attributes (int fd, int baud_rate, MonoParity parity, int dataBits, MonoStopBits stopBits, MonoHandshake handshake)
129 struct termios newtio;
131 tcgetattr (fd, &newtio);
134 case 230400: baud_rate = B230400; break;
135 case 115200: baud_rate = B115200; break;
136 case 57600: baud_rate = B57600; break;
137 case 38400: baud_rate = B38400; break;
138 case 19200: baud_rate = B19200; break;
139 case 9600: baud_rate = B9600; break;
140 case 4800: baud_rate = B4800; break;
141 case 2400: baud_rate = B2400; break;
142 case 1800: baud_rate = B1800; break;
143 case 1200: baud_rate = B1200; break;
144 case 600: baud_rate = B600; break;
145 case 300: baud_rate = B300; break;
146 case 200: baud_rate = B200; break;
147 case 150: baud_rate = B150; break;
148 case 134: baud_rate = B134; break;
149 case 110: baud_rate = B110; break;
150 case 75: baud_rate = B75; break;
159 case NoneParity: /* None */
160 newtio.c_iflag |= IGNPAR;
161 newtio.c_cflag &= ~(PARENB | PARODD);
164 newtio.c_iflag &= ~IGNPAR;
165 newtio.c_cflag |= PARENB | PARODD;
167 case Even: /* Even */
168 newtio.c_iflag &= ~(IGNPAR | PARODD);
169 newtio.c_cflag |= PARENB;
171 case Mark: /* Mark */
174 case Space: /* Space */
179 newtio.c_cflag &= ~CSIZE;
181 case 5: newtio.c_cflag |= CS5; break;
182 case 6: newtio.c_cflag |= CS6; break;
183 case 7: newtio.c_cflag |= CS7; break;
186 newtio.c_cflag |= CS8;
190 newtio.c_cflag &= ~CSTOPB;
196 /* do nothing, the default is one stop bit */
199 newtio.c_cflag |= CSTOPB;
201 case OnePointFive: /* OnePointFive */
206 newtio.c_iflag &= ~IXOFF;
207 newtio.c_oflag &= ~IXON;
209 newtio.c_cflag &= ~CRTSCTS;
210 #endif /* def CRTSCTS */
212 case NoneHandshake: /* None */
215 case RequestToSend: /* RequestToSend (RTS) */
217 newtio.c_cflag |= CRTSCTS;
218 #endif /* def CRTSCTS */
220 case RequestToSendXOnXOff: /* RequestToSendXOnXOff (RTS + XON/XOFF) */
222 newtio.c_cflag |= CRTSCTS;
223 #endif /* def CRTSCTS */
225 case XOnXOff: /* XOnXOff */
226 newtio.c_iflag |= IXOFF;
227 // newtio.c_oflag |= IXON;
231 if (cfsetospeed (&newtio, baud_rate) < 0 || cfsetispeed (&newtio, baud_rate) < 0 ||
232 tcsetattr (fd, TCSADRAIN, &newtio) < 0)
239 get_signal_code (MonoSerialSignal signal)
259 get_signal (int fd, MonoSerialSignal signal)
261 int signals, expected;
263 expected = get_signal_code (signal);
264 if (ioctl (fd, TIOCMGET, &signals) == -1)
267 return (expected & signals) != 0;
271 set_signal (int fd, MonoSerialSignal signal, gboolean value)
273 int signals, expected, activated;
275 expected = get_signal_code (signal);
276 if (ioctl (fd, TIOCMGET, &signals) == -1)
279 activated = (signals & expected) != 0;
280 if (activated == value) /* Already set */
286 signals &= ~expected;
288 if (ioctl (fd, TIOCMSET, &signals) == -1)
295 * mono internals should not be used here.
296 * this serial stuff needs to be implemented with icalls.
297 * make this at least compile until the code is moved elsewhere
298 * defined(linux) is wrong, too
301 list_serial_devices (void)
308 list_serial_devices (void)
312 /* Linux serial files are of the form ttyS[0-9]+ */
313 GSList *l, *list = NULL;
314 GDir* dir = g_dir_open ("/dev", 0, NULL);
315 const char *filename;
318 while ((filename = g_dir_read_name (dir))) {
320 if (!strncmp (filename, "ttyS", 4))
321 list = g_slist_append (list, g_strconcat ("/dev/", filename, NULL));
327 array = mono_array_new (mono_domain_get (), mono_get_string_class (), g_slist_length (list));
328 for (l = list; l; l = l->next) {
329 mono_array_set (array, gpointer, i++, mono_string_new (mono_domain_get (), (char*)l->data));
336 #warning "list_serial_devices isn't ported to this OS"