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comparison serial/serport.c @ 38:1d96f3b4f155

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serial: started with fcsim-serial-atr
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 20 Mar 2021 19:19:46 +0000
parents
children 61a8ac93764f
comparison
equal deleted inserted replaced
37:4e5586c7f275 38:1d96f3b4f155
1 #include <sys/types.h>
2 #include <sys/file.h>
3 #include <sys/ioctl.h>
4 #include <asm/ioctls.h>
5 #include <asm/termbits.h>
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <unistd.h>
9
10 int target_fd;
11
12 open_serial_port(ttyport)
13 char *ttyport;
14 {
15 target_fd = open(ttyport, O_RDWR|O_NONBLOCK);
16 if (target_fd < 0) {
17 perror(ttyport);
18 exit(1);
19 }
20 ioctl(target_fd, TIOCEXCL);
21 return 0;
22 }
23
24 set_serial_params(br)
25 {
26 struct termios2 target_termios;
27
28 target_termios.c_iflag = IGNBRK;
29 target_termios.c_oflag = 0;
30 target_termios.c_cflag = BOTHER|CLOCAL|HUPCL|CREAD|CS8|CSTOPB|PARENB;
31 target_termios.c_lflag = 0;
32 target_termios.c_cc[VMIN] = 1;
33 target_termios.c_cc[VTIME] = 0;
34 target_termios.c_ispeed = br;
35 target_termios.c_ospeed = br;
36 if (ioctl(target_fd, TCSETSF2, &target_termios) < 0) {
37 perror("TCSETSF2");
38 exit(1);
39 }
40 return 0;
41 }
42
43 set_serial_nonblock(state)
44 int state;
45 {
46 ioctl(target_fd, FIONBIO, &state);
47 }
48
49 serial_card_reset()
50 {
51 int mctl_arg = TIOCM_DTR | TIOCM_RTS;
52
53 ioctl(target_fd, TIOCMBIS, &mctl_arg);
54 usleep(20000);
55 ioctl(target_fd, TCFLSH, TCIFLUSH);
56 ioctl(target_fd, TIOCMBIC, &mctl_arg);
57 }