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https://github.com/UzixLS/picocom.git
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ee23af0cb9
If picocom is compiled *with* custom-baudrate support (USE_CUSTOM_BAUD) for Linux, then it uses a new set of ioctl's (TCGETS2 vs TCGETS, etc) to access the serial ports. This patch allows the custom baudrate support to be disabled at runtime (without recompiling), and picocom to switch to using the old ioctl's. To disable custom baudrate support (and switch back to the "old" ioctls) simply define the environment variable NO_CUSTOM_BAUD, before starting picocom. This applies only to Linux and, obviously, only when picocom has been compiled with custom baudrate support (USE_CUSTOM_BAUD).
85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
/*
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* termios2.h
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*
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* Use termios2 interface to set custom baud rates to serial ports.
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*
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* by Nick Patavalis (npat@efault.net)
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*
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* ATTENTION: Linux-specific kludge!
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#ifndef TERMIOS2_H
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#define TERMIOS2_H
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#include <termios.h>
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/* Replace termios functions, with termios2 functions */
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#define tcsetattr tc2setattr
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#define tcgetattr tc2getattr
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#define cfsetispeed cf2setispeed
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#define cfgetispeed cf2getispeed
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/* And define these new ones */
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#define cfsetospeed_custom cf2setospeed_custom
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#define cfsetispeed_custom cf2setispeed_custom
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#define cfgetospeed_custom(tiop) ((tiop)->c_ospeed)
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#define cfgetispeed_custom(tiop) ((tiop)->c_ispeed)
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/* Replacements for the standard tcsetattr(3), tcgetattr(3)
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* functions. Same user interface, but these use the new termios2
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* kernel interface (new ioctl's) which allow custom baud-rate
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* setting. */
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int tc2setattr(int fd, int optional_actions, const struct termios *tios);
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int tc2getattr(int fd, struct termios *tios);
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/* Replacements for the standard cfgetispeed(3), cfsetispeed(3)
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* functions. Use these to set / get standard *input* baudrates. You
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* can still use cfgetospeed(3), cfsetospeed(3) to set / get the
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* standard output baudrates. The new termios2 interface, unlike the
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* old one, supports different input and output speeds for a
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* device. The "speed" argument must be (and the return value will be)
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* one of the standard "Bxxxx" macros. If cf2getispeed() or
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* cfgetospeed(3) return BOTHER, then the respective baudrate is a
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* custom one. Read the "termios.c_ispeed" / "termios.c_ospeed" fields
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* to get the custom value (as a numeric speed). */
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int cf2setispeed(struct termios *tios, speed_t speed);
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speed_t cf2getispeed(const struct termios *tios);
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/* Use these to set *custom* input and output baudrates for a
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* device. The "speed" argument must be a numeric baudrate value
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* (e.g. 1234 for 1234 bps). */
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int cf2setispeed_custom(struct termios *tios, int speed);
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int cf2setospeed_custom(struct termios *tios, int speed);
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/***************************************************************************/
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#endif /* of TERMIOS2_H */
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/***************************************************************************/
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/*
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* Local Variables:
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* mode:c
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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*/
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