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comparison loadtools/sercomm.c @ 7:aa1f6fe16fef

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loadtools building blocks started
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Tue, 30 Apr 2013 07:19:48 +0000
parents
children fea204bc7674
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6:5eaafa83be60 7:aa1f6fe16fef
1 /*
2 * This module handles the establishment of serial communication
3 * with the target, i.e., the host-side termios stuff.
4 */
5
6 #include <sys/types.h>
7 #include <sys/file.h>
8 #include <sys/ioctl.h>
9 #include <termios.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <unistd.h>
13
14 char *target_ttydev;
15 int target_fd;
16 struct termios target_termios;
17
18 open_target_serial()
19 {
20 target_fd = open(target_ttydev, O_RDWR|O_NONBLOCK);
21 if (target_fd < 0) {
22 perror(target_ttydev);
23 exit(1);
24 }
25 target_termios.c_iflag = IGNBRK;
26 target_termios.c_oflag = 0;
27 target_termios.c_cflag = CLOCAL|HUPCL|CREAD|CS8;
28 target_termios.c_lflag = 0;
29 target_termios.c_cc[VMIN] = 1;
30 target_termios.c_cc[VTIME] = 0;
31 /* start at B19200, as that's what we'll need to use initially */
32 cfsetispeed(&target_termios, B19200);
33 cfsetospeed(&target_termios, B19200);
34 if (tcsetattr(target_fd, TCSAFLUSH, &target_termios) < 0) {
35 perror("initial tcsetattr on target");
36 exit(1);
37 }
38 return 0;
39 }