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/*
* 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);
}
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