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>
14 #include <mono/metadata/object.h>
15 #include <mono/metadata/appdomain.h>
16 #include <mono/metadata/exception.h>
19 open_serial (char* devfile)
22 struct termios newtio;
24 fd = open (devfile, O_RDWR);
29 newtio.c_cflag = CLOCAL | CREAD;
34 tcflush(fd, TCIOFLUSH);
35 tcsetattr(fd,TCSANOW,&newtio);
37 fcntl (fd, F_SETFL, O_NONBLOCK);
43 close_serial (int unix_fd)
49 read_serial (int fd, guchar *buffer, int offset, int count, int timeout)
55 ufd.events = POLLHUP | POLLIN | POLLERR;
57 poll (&ufd, 1, timeout);
59 if ((ufd.revents & POLLIN) != POLLIN) {
60 mono_raise_exception (mono_get_exception_io ("ReadTimeout exceeded"));
64 n = read (fd, buffer + offset, count);
70 write_serial (int fd, guchar *buffer, int offset, int count, int timeout)
77 ufd.events = POLLHUP | POLLOUT | POLLERR;
79 poll (&ufd, 1, timeout);
81 if ((ufd.revents & POLLOUT) != POLLOUT) {
82 mono_raise_exception (mono_get_exception_io ("WriteTimeout exceeded"));
86 n = write (fd, buffer + offset, count);
90 discard_buffer (int fd, gboolean input)
92 tcflush(fd, input ? TCIFLUSH : TCOFLUSH);
96 set_attributes (int fd, int baud_rate, int parity, int dataBits, int stopBits, int handshake)
98 struct termios newtio;
100 tcgetattr (fd, &newtio);
103 case 230400: baud_rate = B230400; break;
104 case 115200: baud_rate = B115200; break;
105 case 57600: baud_rate = B57600; break;
106 case 38400: baud_rate = B38400; break;
107 case 19200: baud_rate = B19200; break;
108 case 9600: baud_rate = B9600; break;
109 case 4800: baud_rate = B4800; break;
110 case 2400: baud_rate = B2400; break;
111 case 1800: baud_rate = B1800; break;
112 case 1200: baud_rate = B1200; break;
113 case 600: baud_rate = B600; break;
114 case 300: baud_rate = B300; break;
115 case 200: baud_rate = B200; break;
116 case 150: baud_rate = B150; break;
117 case 134: baud_rate = B134; break;
118 case 110: baud_rate = B110; break;
119 case 75: baud_rate = B75; break;
129 newtio.c_iflag &= ~IGNPAR;
130 newtio.c_cflag |= PARENB;
136 newtio.c_iflag |= IGNPAR;
137 newtio.c_cflag &= ~(PARENB | PARODD);
140 newtio.c_iflag &= ~IGNPAR;
141 newtio.c_cflag |= PARENB | PARODD;
148 newtio.c_cflag &= ~CSIZE;
150 case 5: newtio.c_cflag |= CS5; break;
151 case 6: newtio.c_cflag |= CS6; break;
152 case 7: newtio.c_cflag |= CS7; break;
155 newtio.c_cflag |= CS8;
159 newtio.c_cflag &= ~CSTOPB;
162 /* do nothing, the default is one stop bit */
164 case 1: /* OnePointFive */
168 newtio.c_cflag |= CSTOPB;
172 newtio.c_iflag &= ~IXOFF;
173 newtio.c_oflag &= ~IXON;
174 newtio.c_cflag &= ~CRTSCTS;
179 case 1: /* RequestToSend (RTS) */
180 newtio.c_cflag |= CRTSCTS;
182 case 2: /* RequestToSendXOnXOff (RTS + XON/XOFF) */
183 newtio.c_cflag |= CRTSCTS;
185 case 3: /* XOnXOff */
186 newtio.c_iflag |= IXOFF;
187 // newtio.c_oflag |= IXON;
191 cfsetospeed (&newtio, baud_rate);
192 cfsetispeed (&newtio, baud_rate);
194 tcsetattr(fd,TCSADRAIN,&newtio);
200 list_serial_devices (void)
204 /* Linux serial files are of the form ttyS[0-9]+ */
205 GSList *l, *list = NULL;
206 GDir* dir = g_dir_open ("/dev", 0, NULL);
207 const char *filename;
210 while ((filename = g_dir_read_name (dir))) {
212 if (!strncmp (filename, "ttyS", 4))
213 list = g_slist_append (list, g_strconcat ("/dev/", filename, NULL));
219 array = mono_array_new (mono_domain_get (), mono_get_string_class (), g_slist_length (list));
220 for (l = list; l; l = l->next) {
221 mono_array_set (array, gpointer, i++, mono_string_new (mono_domain_get (), (char*)l->data));
228 #warning "list_serial_devices isn't ported to this OS"