311 lines
13 KiB
C
311 lines
13 KiB
C
/****************************************************************************
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* include/termios.h
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*
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* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_TERMIOS_H
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#define __INCLUDE_TERMIOS_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdint.h>
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/* Terminal input modes (c_iflag in the termios structure) */
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#define BRKINT (1 << 0) /* Bit 0: Signal interrupt on break */
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#define ICRNL (1 << 1) /* Bit 1: Map CR to NL on input */
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#define IGNBRK (1 << 2) /* Bit 2: Ignore break condition */
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#define IGNCR (1 << 3) /* Bit 3: Ignore CR */
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#define IGNPAR (1 << 4) /* Bit 4: Ignore characters with parity errors */
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#define INLCR (1 << 5) /* Bit 5: Map NL to CR on input */
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#define INPCK (1 << 6) /* Bit 6: Enable input parity check */
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#define ISTRIP (1 << 7) /* Bit 7: Strip character */
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#define IUCLC (1 << 8) /* Bit 8: Map upper-case to lower-case on input (LEGACY) */
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#define IXANY (1 << 9) /* Bit 9: Enable any character to restart output */
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#define IXOFF (1 << 10) /* Bit 10: Enable start/stop input control */
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#define IXON (1 << 11) /* Bit 11: Enable start/stop output control */
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#define PARMRK (1 << 12) /* Bit 12: Mark parity errors */
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/* Terminal output modes (c_oflag in the termios structure) */
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#define OPOST (1 << 0) /* Bit 0: Post-process output */
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#define OLCUC (1 << 1) /* Bit 1: Map lower-case to upper-case on output (LEGACY) */
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#define ONLCR (1 << 2) /* Bit 2: Map NL to CR-NL on output */
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#define OCRNL (1 << 3) /* Bit 3: Map CR to NL on output */
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#define ONOCR (1 << 4) /* Bit 4: No CR output at column 0 */
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#define ONLRET (1 << 5) /* Bit 5: NL performs CR function */
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#define OFILL (1 << 6) /* Bit 6: Use fill characters for delay */
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#define NLDLY (1 << 7) /* Bit 7: Select newline delays: */
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# define NL0 (0 << 7) /* Newline character type 0 */
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# define NL1 (1 << 7) /* Newline character type 1 */
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#define CRDLY (3 << 8) /* Bits 8-9: Select carriage-return delays: */
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# define CR0 (0 << 8) /* Carriage-return delay type 0 */
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# define CR1 (1 << 8) /* Carriage-return delay type 1 */
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# define CR2 (2 << 8) /* Carriage-return delay type 2 */
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# define CR3 (3 << 8) /* Carriage-return delay type 3 */
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#define TABDLY (3 << 10) /* Bit 10-11: Select horizontal-tab delays: */
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# define TAB0 (0 << 10) /* Horizontal-tab delay type 0 */
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# define TAB1 (1 << 10) /* Horizontal-tab delay type 1 */
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# define TAB2 (2 << 10) /* Horizontal-tab delay type 2 */
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# define TAB3 (3 << 10) /* Expand tabs to spaces */
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#define BSDLY (1 << 12) /* Bit 12: Select backspace delays: */
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# define BS0 (0 << 12) /* Backspace-delay type 0 */
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# define BS1 (1 << 12) /* Backspace-delay type 1 */
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#define VTDLY (1 << 13) /* Bit 13: Select vertical-tab delays: */
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# define VT0 (0 << 13) /* Vertical-tab delay type 0 */
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# define VT1 (1 << 13) /* Vertical-tab delay type 1 */
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#define FFDLY (1 << 14) /* Bit 14: Select form-feed delays: */
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# define FF0 (0 << 14) /* Form-feed delay type 0 */
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# define FF1 (1 << 14) /* Form-feed delay type 1 */
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/* Control Modes (c_cflag in the termios structure) */
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#define CSIZE (3 << 0) /* Bits 0-1: Character size: */
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# define CS5 (0 << 0) /* 5 bits */
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# define CS6 (1 << 0) /* 6 bits */
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# define CS7 (2 << 0) /* 7 bits */
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# define CS8 (3 << 0) /* 8 bits */
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#define CSTOPB (1 << 2) /* Bit 2: Send two stop bits, else one */
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#define CREAD (1 << 3) /* Bit 3: Enable receiver */
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#define PARENB (1 << 4) /* Bit 4: Parity enable */
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#define PARODD (1 << 5) /* Bit 5: Odd parity, else even */
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#define HUPCL (1 << 6) /* Bit 6: Hang up on last close */
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#define CLOCAL (1 << 7) /* Bit 7: Ignore modem status lines */
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#define CCTS_OFLOW (1 << 8) /* Bit 8: CTS flow control of output */
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#define CRTSCTS CCTS_OFLOW
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#define CRTS_IFLOW (1 << 9) /* Bit 9: RTS flow control of input */
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/* Local Modes (c_lflag in the termios structure) */
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#define ECHO (1 << 0) /* Bit 0: Enable echo */
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#define ECHOE (1 << 1) /* Bit 1: Echo erase character as error-correcting backspace */
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#define ECHOK (1 << 2) /* Bit 2: Echo KILL */
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#define ECHONL (1 << 3) /* Bit 3: Echo NL */
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#define ICANON (1 << 4) /* Bit 4: Canonical input (erase and kill processing) */
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#define IEXTEN (1 << 5) /* Bit 5: Enable extended input character processing */
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#define ISIG (1 << 6) /* Bit 6: Enable signals */
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#define NOFLSH (1 << 7) /* Bit 7: Disable flush after interrupt or quit */
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#define TOSTOP (1 << 8) /* Bit 8: Send SIGTTOU for background output */
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#define XCASE (1 << 9) /* Bit 9: Canonical upper/lower presentation (LEGACY) */
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/* The following are subscript names for the termios c_cc array */
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#define VEOF 0 /* Bit 0: EOF character (canonical mode) */
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#define VMIN VEOF /* Bit 0: MIN value (Non-canonical mode) */
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#define VEOL 1 /* Bit 1: EOL character (canonical mode) */
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#define VTIME VEOL /* Bit 1: TIME value (Non-canonical mode) */
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#define VERASE 2 /* Bit 2: ERASE character (canonical mode) */
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#define VINTR 3 /* Bit 3: INTR character */
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#define VKILL 4 /* Bit 4: KILL character (canonical mode) */
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#define VQUIT 5 /* Bit 5: QUIT character */
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#define VSTART 6 /* Bit 6: START character */
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#define VSTOP 7 /* Bit 7: STOP character */
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#define VSUSP 8 /* Bit 8: SUSP character */
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#define NCCS 9 /* Bit 9: Size of the array c_cc for control characters */
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/* Baud Rate Selection. These are instances of type speed_t. Values of 38400
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* and below are specified by POSIX; values above 38400 are sometimes referred
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* to as extended values and most values appear in most termios.h implementations.
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*
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* NOTE that is NuttX that the encoding of the speed_t values is simply the
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* value of the baud itself. So this opens a window for non-portable abuse
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* of the speed-related interfaces: The defined values should be used where-
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* ever possible for reasons of portability.
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*/
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#define B0 0 /* Hang up */
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#define B50 50 /* 50 baud */
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#define B75 75 /* 75 baud */
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#define B110 110 /* 110 baud */
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#define B134 134 /* 134.5 baud */
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#define B150 150 /* 150 baud */
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#define B200 200 /* 200 baud */
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#define B300 300 /* 300 baud */
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#define B600 600 /* 600 baud */
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#define B1200 1200 /* 1,200 baud */
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#define B1800 1800 /* 1,800 baud */
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#define B2400 2400 /* 2,400 baud */
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#define B4800 4800 /* 4,800 baud */
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#define B9600 9600 /* 9,600 baud */
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#define B19200 19200 /* 19,200 baud */
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#define B38400 38400 /* 38,400 baud */
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#define B57600 57600 /* 57,600 baud */
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#define B115200 115200 /* 115,200 baud */
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#define B128000 128000 /* 128,000 baud */
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#define B230400 230400 /* 230,400 baud */
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#define B256000 256000 /* 256,000 baud */
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#define B460800 460800 /* 460,800 baud */
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#define B500000 500000 /* 500,000 baud */
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#define B576000 576000 /* 576,000 baud */
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#define B921600 921600 /* 921,600 baud */
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#define B1000000 1000000 /* 1,000,000 baud */
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#define B1152000 1152000 /* 1,152,000 baud */
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#define B1500000 1500000 /* 1,500,000 baud */
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#define B2000000 2000000 /* 2,000,000 baud */
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#define B2500000 2500000 /* 2,500,000 baud */
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#define B3000000 3000000 /* 3,000,000 baud */
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/* Attribute Selection (used with tcsetattr()) */
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#define TCSANOW 0 /* Change attributes immediately */
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#define TCSADRAIN 1 /* Change attributes when output has drained */
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#define TCSAFLUSH 2 /* Change attributes when output has drained; also flush pending input */
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/* Line Control (used with tcflush()) */
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#define TCIFLUSH 0 /* Flush pending input. Flush untransmitted output */
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#define TCIOFLUSH 1 /* Flush both pending input and untransmitted output */
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#define TCOFLUSH 2 /* Flush untransmitted output */
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/* Constants for use with tcflow() */
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#define TCIOFF 0 /* Transmit a STOP character, intended to suspend input data */
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#define TCION 1 /* Transmit a START character, intended to restart input data */
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#define TCOOFF 2 /* Suspend output */
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#define TCOON 3 /* Restart output */
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/****************************************************************************
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* Public Type Definitions
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****************************************************************************/
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/* Baud rate selection */
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typedef uint32_t speed_t; /* Used for terminal baud rates */
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/* Types used within the termios structure */
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typedef uint16_t tcflag_t; /* Used for terminal modes */
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typedef int cc_t; /* Used for terminal special characters */
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/* The termios structure */
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struct termios
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{
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/* Exposed fields defined by POSIX */
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tcflag_t c_iflag; /* Input modes */
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tcflag_t c_oflag; /* Output modes */
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tcflag_t c_cflag; /* Control modes */
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tcflag_t c_lflag; /* Local modes */
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cc_t c_cc[NCCS]; /* Control chars */
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/* Implementation specific fields. For portability reasons, these fields
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* should not be accessed directly, but rather through only through the
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* cf[set|get][o|i]speed() POSIX interfaces.
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*/
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speed_t c_speed; /* Input/output speed (non-POSIX)*/
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};
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/* The cfgetspeed() function is a non-POSIX function will extract the baud
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* from the termios structure to which the termiosp argument points. NuttX
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* does not control input/output baud independently. Both must be the same.
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* The POSIX standard interfaces, cfigetispeed() and cfigetospeed() are
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* supported by simply defining them to be cfgetspeed().
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*/
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speed_t cfgetspeed(FAR const struct termios *termiosp);
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#define cfgetispeed(termiosp) cfgetspeed(termiosp)
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#define cfgetospeed(termiosp) cfgetspeed(termiosp)
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/* The cfsetspeed() function is a non-POSIX function that sets the baud
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* stored in the structure pointed to by termiosp to speed. NuttX does
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* not control input/output baud independently. Both must be the same.
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* The POSIX standard interfaces, cfigetispeed() and cfigetospeed() are
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* supported by simply defining them to be cfsetspeed().
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*/
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int cfsetspeed(FAR struct termios *termiosp, speed_t speed);
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#define cfsetispeed(termiosp,speed) cfsetspeed(termiosp,speed)
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#define cfsetospeed(termiosp,speed) cfsetspeed(termiosp,speed)
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/* Wait for transmission of output */
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int tcdrain(int fd);
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/* Suspend or restart the transmission or reception of data */
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int tcflow(int fd, int action);
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/* Flush non-transmitted output data, non-read input data or both */
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int tcflush(int fd, int cmd);
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/* Get the parameters associated with the terminal */
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int tcgetattr(int fd, FAR struct termios *termiosp);
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/* Get process group ID for session leader for controlling terminal */
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pid_t tcgetsid(int fd);
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/* Send a "break" for a specific duration */
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int tcsendbreak(int fd, int duration);
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/* Set the parameters associated with the terminal */
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int tcsetattr(int fd, int options, FAR const struct termios *termiosp);
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/* Check if a file descriptor corresponds to a terminal I/O file */
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int isatty(int fd);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCLUDE_TERMIOS_H */
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