FreeCalypso > hg > freecalypso-sw

annotate loadtools/sercomm.c @ 876:c9f353b5d70c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
rvinterf/asyncshell/rxctl.c: buglet in the implementation of dis/enable commands
author Space Falcon <falcon@ivan.Harhan.ORG>
date Sat, 30 May 2015 07:50:05 +0000
parents f1df95eed62c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1 /*
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
2 * This module handles the establishment of serial communication
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
3 * with the target, i.e., the host-side termios stuff.
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
4 */
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
5
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
6 #include <sys/types.h>
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
7 #include <sys/file.h>
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
8 #include <sys/ioctl.h>
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
9 #include <termios.h>
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
10 #include <stdio.h>
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
11 #include <stdlib.h>
50
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
12 #include <string.h>
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
13 #include <strings.h>
7
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
14 #include <unistd.h>
49
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
15 #include "baudrate.h"
7
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
16
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
17 char *target_ttydev;
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
18 int target_fd;
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
19 struct termios target_termios;
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
20
49
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
21 struct baudrate baud_rate_table[] = {
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
22 /* the first listed rate will be our default */
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
23 {"115200", B115200, 0},
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
24 {"57600", B57600, 1},
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
25 {"38400", B38400, 2},
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
26 {"19200", B19200, 4},
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
27 /* non-standard high baud rates "remapped" by CP2102 usb2serial IC */
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
28 {"812500", B921600, -1},
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
29 {"406250", B460800, -1},
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
30 {"203125", B230400, -1},
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
31 /* table search terminator */
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
32 {NULL, B0, -1},
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
33 };
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
34 struct baudrate *current_baud_rate;
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
35
7
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
36 open_target_serial()
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
37 {
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
38 target_fd = open(target_ttydev, O_RDWR|O_NONBLOCK);
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
39 if (target_fd < 0) {
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
40 perror(target_ttydev);
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
41 exit(1);
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
42 }
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
43 target_termios.c_iflag = IGNBRK;
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
44 target_termios.c_oflag = 0;
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
45 target_termios.c_cflag = CLOCAL|HUPCL|CREAD|CS8;
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
46 target_termios.c_lflag = 0;
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
47 target_termios.c_cc[VMIN] = 1;
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
48 target_termios.c_cc[VTIME] = 0;
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
49 /* start at B19200, as that's what we'll need to use initially */
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
50 cfsetispeed(&target_termios, B19200);
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
51 cfsetospeed(&target_termios, B19200);
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
52 if (tcsetattr(target_fd, TCSAFLUSH, &target_termios) < 0) {
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
53 perror("initial tcsetattr on target");
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
54 exit(1);
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
55 }
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
56 return 0;
aa1f6fe16fef loadtools building blocks started
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
57 }
9
fea204bc7674 fc-sertool compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 7
diff changeset
58
50
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
59 struct baudrate *
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
60 find_baudrate_by_name(srch_name)
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
61 char *srch_name;
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
62 {
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
63 struct baudrate *br;
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
64
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
65 for (br = baud_rate_table; br->name; br++)
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
66 if (!strcmp(br->name, srch_name))
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
67 break;
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
68 if (br->name)
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
69 return(br);
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
70 else {
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
71 fprintf(stderr, "error: baud rate \"%s\" not known\n",
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
72 srch_name);
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
73 return(NULL);
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
74 }
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
75 }
f1df95eed62c loadtools: -b option works in fc-iram
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 49
diff changeset
76
49
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
77 switch_baud_rate(br)
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
78 struct baudrate *br;
9
fea204bc7674 fc-sertool compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 7
diff changeset
79 {
49
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
80 cfsetispeed(&target_termios, br->termios_code);
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
81 cfsetospeed(&target_termios, br->termios_code);
9
fea204bc7674 fc-sertool compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 7
diff changeset
82 if (tcsetattr(target_fd, TCSAFLUSH, &target_termios) < 0) {
fea204bc7674 fc-sertool compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 7
diff changeset
83 perror("tcsetattr to switch baud rate");
fea204bc7674 fc-sertool compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 7
diff changeset
84 exit(1);
fea204bc7674 fc-sertool compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 7
diff changeset
85 }
49
54392d1ea474 loadtools: first beginnings for the baud rate switching logic
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 9
diff changeset
86 current_baud_rate = br;
9
fea204bc7674 fc-sertool compiles
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 7
diff changeset
87 }