130 lines
2.7 KiB
C
Executable File
130 lines
2.7 KiB
C
Executable File
/*
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2017/08/30 Bernard The first version
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/errno.h>
|
|
#include "termios.h"
|
|
#include <rtthread.h>
|
|
|
|
int tcgetattr(int fd, struct termios *tio)
|
|
{
|
|
/* Get the current serial port settings. */
|
|
if (ioctl(fd, TCGETA, tio))
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int tcsetattr(int fd, int act, const struct termios *tio)
|
|
{
|
|
switch (act)
|
|
{
|
|
case TCSANOW:
|
|
/* make the change immediately */
|
|
return (ioctl(fd, TCSETA, (void*)tio));
|
|
case TCSADRAIN:
|
|
/*
|
|
* Don't make the change until all currently written data
|
|
* has been transmitted.
|
|
*/
|
|
return (ioctl(fd, TCSETAW, (void*)tio));
|
|
case TCSAFLUSH:
|
|
/* Don't make the change until all currently written data
|
|
* has been transmitted, at which point any received but
|
|
* unread data is also discarded.
|
|
*/
|
|
return (ioctl(fd, TCSETAF, (void*)tio));
|
|
default:
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* this function gets process group ID for session leader for controlling
|
|
* terminal
|
|
*
|
|
* @return always 0
|
|
*/
|
|
pid_t tcgetsid(int fd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
speed_t cfgetospeed(const struct termios *tio)
|
|
{
|
|
return tio->c_cflag & CBAUD;
|
|
}
|
|
|
|
speed_t cfgetispeed(const struct termios *tio)
|
|
{
|
|
return cfgetospeed(tio);
|
|
}
|
|
|
|
int cfsetospeed(struct termios *tio, speed_t speed)
|
|
{
|
|
if (speed & ~CBAUD)
|
|
{
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
tio->c_cflag &= ~CBAUD;
|
|
tio->c_cflag |= speed;
|
|
return 0;
|
|
}
|
|
|
|
int cfsetispeed(struct termios *tio, speed_t speed)
|
|
{
|
|
return speed ? cfsetospeed(tio, speed) : 0;
|
|
}
|
|
|
|
int tcsendbreak(int fd, int dur)
|
|
{
|
|
/* nonzero duration is implementation-defined, so ignore it */
|
|
return 0;
|
|
}
|
|
|
|
int tcflush(int fd, int queue)
|
|
{
|
|
return ioctl(fd, TCFLSH, (void*)(rt_ubase_t)queue);
|
|
}
|
|
|
|
int tcflow(int fd, int action)
|
|
{
|
|
return ioctl(fd, TCXONC, (void*)(rt_ubase_t)action);
|
|
}
|
|
|
|
/**
|
|
* this function waits for transmission of output
|
|
*/
|
|
int tcdrain(int fd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void cfmakeraw(struct termios *t)
|
|
{
|
|
t->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
|
|
t->c_oflag &= ~OPOST;
|
|
t->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
|
|
t->c_cflag &= ~(CSIZE|PARENB);
|
|
t->c_cflag |= CS8;
|
|
t->c_cc[VMIN] = 1;
|
|
t->c_cc[VTIME] = 0;
|
|
}
|
|
|
|
int cfsetspeed(struct termios *tio, speed_t speed)
|
|
{
|
|
return cfsetospeed(tio, speed);
|
|
}
|