FreeCalypso > hg > freecalypso-sw

annotate miscutil/openport.c @ 992:a7b0b426f9ca

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
target-utils: boot ROM UART autodetection revamped The new implementation should work with both the familiar Calypso C035 boot ROM version found in our regular targets as well as the older Calypso F741979B version found on the vintage D-Sample board.
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Wed, 30 Dec 2015 21:28:41 +0000
parents 3822f3b198d4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
434
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1 /*
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
2 * Serial port opening code for fc-serterm
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
3 */
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
4
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
5 #include <sys/types.h>
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
6 #include <sys/file.h>
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
7 #include <sys/ioctl.h>
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
8 #include <termios.h>
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
9 #include <stdio.h>
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
10 #include <stdlib.h>
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
11 #include <string.h>
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
12 #include <strings.h>
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
13 #include <unistd.h>
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
14
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
15 extern int target_fd;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
16
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
17 static struct baudrate {
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
18 char *name;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
19 speed_t termios_code;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
20 } baud_rate_table[] = {
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
21 {"19200", B19200},
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
22 {"38400", B38400},
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
23 {"57600", B57600},
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
24 {"115200", B115200},
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
25 /* non-standard high baud rates "remapped" by CP2102 usb2serial IC */
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
26 {"203125", B230400},
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
27 {"406250", B460800},
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
28 {"812500", B921600},
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
29 /* table search terminator */
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
30 {NULL, B0}
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
31 };
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
32
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
33 open_target_serial(ttydev, baudname)
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
34 char *ttydev, *baudname;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
35 {
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
36 struct termios target_termios;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
37 struct baudrate *br;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
38
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
39 for (br = baud_rate_table; br->name; br++)
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
40 if (!strcmp(br->name, baudname))
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
41 break;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
42 if (!br->name) {
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
43 fprintf(stderr, "baud rate \"%s\" unknown/unsupported\n",
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
44 baudname);
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
45 exit(1);
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
46 }
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
47 target_fd = open(ttydev, O_RDWR|O_NONBLOCK);
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
48 if (target_fd < 0) {
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
49 perror(ttydev);
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
50 exit(1);
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
51 }
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
52 target_termios.c_iflag = IGNBRK;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
53 target_termios.c_oflag = 0;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
54 target_termios.c_cflag = CLOCAL|HUPCL|CREAD|CS8;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
55 target_termios.c_lflag = 0;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
56 target_termios.c_cc[VMIN] = 1;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
57 target_termios.c_cc[VTIME] = 0;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
58 cfsetispeed(&target_termios, br->termios_code);
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
59 cfsetospeed(&target_termios, br->termios_code);
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
60 if (tcsetattr(target_fd, TCSAFLUSH, &target_termios) < 0) {
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
61 perror("initial tcsetattr on target");
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
62 exit(1);
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
63 }
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
64 return 0;
3822f3b198d4 fc-serterm: written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
65 }