forked from Imagelibrary/rtems
8e6ded473c
This is an update of many lingering embedded brains GmbH licenses from the RTEMS License to the 2-BSD license where possible depending on the joint copyrights. Updates #3053.
115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/*
|
|
* Copyright (C) 2011 embedded brains GmbH & Co. KG
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <rtems/shell.h>
|
|
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
|
|
static rtems_status_code change_serial_settings(int fd, struct termios *term)
|
|
{
|
|
rtems_status_code sc = RTEMS_UNSATISFIED;
|
|
int rv = tcgetattr(fd, term);
|
|
|
|
if (rv == 0) {
|
|
struct termios new_term = *term;
|
|
|
|
new_term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
|
|
new_term.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
|
|
new_term.c_cflag &= ~(CSIZE | PARENB);
|
|
new_term.c_cflag |= CS8;
|
|
|
|
new_term.c_cc [VMIN] = 0;
|
|
new_term.c_cc [VTIME] = 10;
|
|
|
|
rv = tcsetattr(fd, TCSANOW, &new_term);
|
|
if (rv == 0) {
|
|
sc = RTEMS_SUCCESSFUL;
|
|
}
|
|
}
|
|
|
|
return sc;
|
|
}
|
|
|
|
static rtems_status_code restore_serial_settings(int fd, struct termios *term)
|
|
{
|
|
int rv = tcsetattr(fd, TCSANOW, term);
|
|
|
|
return rv == 0 ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED;
|
|
}
|
|
|
|
rtems_status_code rtems_shell_wait_for_explicit_input(
|
|
int fd,
|
|
int timeout_in_seconds,
|
|
rtems_shell_wait_for_input_notification notification,
|
|
void *notification_arg,
|
|
int desired_input
|
|
)
|
|
{
|
|
struct termios term;
|
|
rtems_status_code sc = change_serial_settings(fd, &term);
|
|
|
|
if (sc == RTEMS_SUCCESSFUL) {
|
|
bool input_detected = false;
|
|
int i = 0;
|
|
|
|
for (i = 0; i < timeout_in_seconds && !input_detected; ++i) {
|
|
unsigned char c;
|
|
|
|
(*notification)(fd, timeout_in_seconds - i, notification_arg);
|
|
|
|
input_detected = read(fd, &c, sizeof(c)) > 0
|
|
&& (desired_input == -1 || desired_input == c);
|
|
}
|
|
|
|
sc = restore_serial_settings(fd, &term);
|
|
if (sc == RTEMS_SUCCESSFUL) {
|
|
sc = input_detected ? RTEMS_SUCCESSFUL : RTEMS_TIMEOUT;
|
|
}
|
|
}
|
|
|
|
return sc;
|
|
}
|
|
|
|
rtems_status_code rtems_shell_wait_for_input(
|
|
int fd,
|
|
int timeout_in_seconds,
|
|
rtems_shell_wait_for_input_notification notification,
|
|
void *notification_arg
|
|
)
|
|
{
|
|
return rtems_shell_wait_for_explicit_input(
|
|
fd,
|
|
timeout_in_seconds,
|
|
notification,
|
|
notification_arg,
|
|
-1
|
|
);
|
|
}
|