FreeCalypso > hg > freecalypso-tools

annotate libserial-newlnx/openport.c @ 575:cef70d53fc5e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
loadtools: new -P boot control mechanism implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 02 Feb 2020 20:01:22 +0000
parents 6984b76f3def
children 9d9c241f2c84
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
254
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 * This module implements the basic serial port opening operation.
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 */
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 #include <sys/types.h>
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 #include <sys/file.h>
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 #include <sys/ioctl.h>
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 #include <stdio.h>
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <stdlib.h>
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <unistd.h>
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 int target_fd;
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 open_serial_port(ttyport)
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 char *ttyport;
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 {
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 target_fd = open(ttyport, O_RDWR|O_NONBLOCK);
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 if (target_fd < 0) {
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 perror(ttyport);
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 exit(1);
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 }
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 ioctl(target_fd, TIOCEXCL);
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 return 0;
6984b76f3def beginning of libserial-newlnx: copy of libserial-orig
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 }