/**************************************************************************** * include/termios.h * * Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * 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. * ****************************************************************************/ #ifndef __INCLUDE_TERMIOS_H #define __INCLUDE_TERMIOS_H /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #ifdef CONFIG_SERIAL_TERMIOS /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* Terminal input modes (c_iflag in the termios structure) */ #define IGNBRK (1 << 0) /* Bit 0: Ignore break condition */ #define BRKINT (1 << 1) /* Bit 1: Signal interrupt on break */ #define IGNPAR (1 << 2) /* Bit 2: Ignore characters with parity errors */ #define PARMRK (1 << 3) /* Bit 3: Mark parity errors */ #define INPCK (1 << 4) /* Bit 4: Enable input parity check */ #define ISTRIP (1 << 5) /* Bit 5: Strip character */ #define INLCR (1 << 6) /* Bit 6: Map NL to CR on input */ #define IGNCR (1 << 7) /* Bit 7: Ignore CR */ #define ICRNL (1 << 8) /* Bit 8: Map CR to NL on input */ #define IUCLC (1 << 9) /* Bit 9: Map upper-case to lower-case on input (LEGACY) */ #define IXON (1 << 10) /* Bit 10: Enable start/stop output control */ #define IXANY (1 << 11) /* Bit 11: Enable any character to restart output */ #define IXOFF (1 << 12) /* Bit 12: Enable start/stop input control */ /* Terminal output modes (c_oflag in the termios structure) */ #define OPOST (1 << 0) /* Bit 0: Post-process output */ #define OLCUC (1 << 1) /* Bit 1: Map lower-case to upper-case on output (LEGACY) */ #define ONLCR (1 << 2) /* Bit 2: Map NL to CR-NL on output */ #define OCRNL (1 << 3) /* Bit 3: Map CR to NL on output */ #define ONOCR (1 << 4) /* Bit 4: No CR output at column 0 */ #define ONLRET (1 << 5) /* Bit 5: NL performs CR function */ #define OFILL (1 << 6) /* Bit 6: Use fill characters for delay */ #define NLDLY (1 << 8) /* Bit 8: Select newline delays: */ # define NL0 (0 << 8) /* Newline character type 0 */ # define NL1 (1 << 8) /* Newline character type 1 */ #define CRDLY (3 << 9) /* Bits 9-10: Select carriage-return delays: */ # define CR0 (0 << 9) /* Carriage-return delay type 0 */ # define CR1 (1 << 9) /* Carriage-return delay type 1 */ # define CR2 (2 << 9) /* Carriage-return delay type 2 */ # define CR3 (3 << 9) /* Carriage-return delay type 3 */ #define TABDLY (3 << 11) /* Bits 11-12: Select horizontal-tab delays: */ # define TAB0 (0 << 11) /* Horizontal-tab delay type 0 */ # define TAB1 (1 << 11) /* Horizontal-tab delay type 1 */ # define TAB2 (2 << 11) /* Horizontal-tab delay type 2 */ # define TAB3 (3 << 11) /* Expand tabs to spaces */ #define BSDLY (1 << 13) /* Bit 13: Select backspace delays: */ # define BS0 (0 << 13) /* Backspace-delay type 0 */ # define BS1 (1 << 13) /* Backspace-delay type 1 */ #define VTDLY (1 << 14) /* Bit 14: Select vertical-tab delays: */ # define VT0 (0 << 14) /* Vertical-tab delay type 0 */ # define VT1 (1 << 14) /* Vertical-tab delay type 1 */ #define FFDLY (1 << 15) /* Bit 15: Select form-feed delays: */ # define FF0 (0 << 15) /* Form-feed delay type 0 */ # define FF1 (1 << 15) /* Form-feed delay type 1 */ /* Control Modes (c_cflag in the termios structure) */ #define CSIZE (3 << 4) /* Bits 4-5: Character size: */ # define CS5 (0 << 4) /* 5 bits */ # define CS6 (1 << 4) /* 6 bits */ # define CS7 (2 << 4) /* 7 bits */ # define CS8 (3 << 4) /* 8 bits */ #define CSTOPB (1 << 6) /* Bit 6: Send two stop bits, else one */ #define CREAD (1 << 7) /* Bit 7: Enable receiver */ #define PARENB (1 << 8) /* Bit 8: Parity enable */ #define PARODD (1 << 9) /* Bit 9: Odd parity, else even */ #define HUPCL (1 << 10) /* Bit 10: Hang up on last close */ #define CLOCAL (1 << 11) /* Bit 11: Ignore modem status lines */ #define CCTS_OFLOW (1 << 29)/* Bit 29: CTS flow control of output */ #define CRTS_IFLOW (1 << 31)/* Bit 31: RTS flow control of input */ #define CRTSCTS (CCTS_OFLOW | CRTS_IFLOW) /* Local Modes (c_lflag in the termios structure) */ #define ISIG (1 << 0) /* Bit 0: Enable signals */ #define ICANON (1 << 1) /* Bit 1: Canonical input (erase and kill processing) */ #define XCASE (1 << 2) /* Bit 2: Canonical upper/lower presentation (LEGACY) */ #define ECHO (1 << 3) /* Bit 3: Enable echo */ #define ECHOE (1 << 4) /* Bit 4: Echo erase character as error correcting backspace */ #define ECHOK (1 << 5) /* Bit 5: Echo KILL */ #define ECHONL (1 << 6) /* Bit 6: Echo NL */ #define NOFLSH (1 << 7) /* Bit 7: Disable flush after interrupt or quit */ #define TOSTOP (1 << 8) /* Bit 8: Send SIGTTOU for background output */ #define IEXTEN (1 << 15) /* Bit 15: Enable extended input character processing */ /* The following are subscript names for the termios c_cc array. * * Common characters: VINTR, VQUIT, VSTART, VSTOP, VSUSP * * VINTR: Interrupt character (Default ETX, Control-C) * VQUIT: Quit character (Default FS, Control-\) * VSTART: Start character (Default DC1, Control-Q) * VSTOP: Stop character (Default DC3, Control-S) * VSUSP: Suspend character (Default SUB, Control-Z) * * Canonical mode: Adds VEOF, VEOL, VERASE, VKILL * * VEOL: End-of-file character (Default SUB, Control-Z) * VEOF: End-of-line character (Default NUL) * VERASE: Erase character (Default DEL or BS, Control-H) * VKILL: Kill character (Default NAK or BS, Control-U) * * Non-canonical mode: Adds VMIN, VTIME * * VMIN: Minimum number of characters for non-canonical read * VTIME: Timeout in deciseconds for non-canonical read */ #define VINTR 0 /* Bit 0: INTR character */ #define VQUIT 1 /* Bit 1: QUIT character */ #define VERASE 2 /* Bit 2: ERASE character (canonical mode) */ #define VKILL 3 /* Bit 3: KILL character (canonical mode) */ #define VEOF 4 /* Bit 4: EOF character (canonical mode) */ #define VTIME 5 /* Bit 5: TIME value (non-canonical mode) */ #define VMIN 6 /* Bit 6: MIN value (non-canonical mode) */ #define VSTART 8 /* Bit 8: START character */ #define VSTOP 9 /* Bit 9: STOP character */ #define VSUSP 10 /* Bit 10: SUSP character */ #define VEOL 11 /* Bit 11: EOL character (canonical mode) */ #define NCCS 12 /* Bit 12: Size of the array c_cc for control characters */ /* Baud Rate Selection. These are instances of type speed_t. Values of * 38400 and below are specified by POSIX; values above 38400 are sometimes * referred to as extended values and most values appear in most termios.h * implementations. */ #define B0 0000000 /* Hang up */ #define B50 0000001 /* 50 baud */ #define B75 0000002 /* 75 baud */ #define B110 0000003 /* 110 baud */ #define B134 0000004 /* 134.5 baud */ #define B150 0000005 /* 150 baud */ #define B200 0000006 /* 200 baud */ #define B300 0000007 /* 300 baud */ #define B600 0000010 /* 600 baud */ #define B1200 0000011 /* 1,200 baud */ #define B1800 0000012 /* 1,800 baud */ #define B2400 0000013 /* 2,400 baud */ #define B4800 0000014 /* 4,800 baud */ #define B9600 0000015 /* 9,600 baud */ #define B19200 0000016 /* 19,200 baud */ #define B38400 0000017 /* 38,400 baud */ #define B57600 0010001 /* 57,600 baud */ #define B115200 0010002 /* 115,200 baud */ #define B230400 0010003 /* 230,400 baud */ #define B460800 0010004 /* 460,800 baud */ #define B500000 0010005 /* 500,000 baud */ #define B576000 0010006 /* 576,000 baud */ #define B921600 0010007 /* 921,600 baud */ #define B1000000 0010010 /* 1,000,000 baud */ #define B1152000 0010011 /* 1,152,000 baud */ #define B1500000 0010012 /* 1,500,000 baud */ #define B2000000 0010013 /* 2,000,000 baud */ #define B2500000 0010014 /* 2,500,000 baud */ #define B3000000 0010015 /* 3,000,000 baud */ #define B3500000 0010016 /* 3,500,000 baud */ #define B4000000 0010017 /* 4,000,000 baud */ /* Attribute Selection (used with tcsetattr()) */ #define TCSANOW 0 /* Change attributes immediately */ #define TCSADRAIN 1 /* Change attributes when output has drained */ #define TCSAFLUSH 2 /* Change attributes when output has drained; * also flush pending input */ /* Line Control (used with tcflush()) */ #define TCIFLUSH 0 /* Flush pending input */ #define TCOFLUSH 1 /* Flush untransmitted output */ #define TCIOFLUSH 2 /* Flush both pending input and untransmitted * output */ /* Constants for use with tcflow() */ #define TCOOFF 0 /* Suspend output */ #define TCOON 1 /* Restart output */ #define TCIOFF 2 /* Transmit a STOP character, intended to * suspend input data */ #define TCION 3 /* Transmit a START character, intended to * restart input data */ /**************************************************************************** * Public Type Definitions ****************************************************************************/ /* Baud rate selection */ typedef unsigned int speed_t; /* Used for terminal baud rates */ /* Types used within the termios structure */ typedef unsigned int tcflag_t; /* Used for terminal modes */ typedef unsigned char cc_t; /* Used for terminal special characters */ /* The termios structure */ struct termios { /* Exposed fields defined by POSIX */ tcflag_t c_iflag; /* Input modes */ tcflag_t c_oflag; /* Output modes */ tcflag_t c_cflag; /* Control modes */ tcflag_t c_lflag; /* Local modes */ cc_t c_cc[NCCS]; /* Control chars */ /* Implementation specific fields. For portability reasons, these fields * should not be accessed directly, but rather through only through the * cf[set|get][o|i]speed() POSIX interfaces. */ speed_t c_speed; /* Input/output speed (non-POSIX) */ }; /**************************************************************************** * Public Function Prototypes ****************************************************************************/ #ifdef __cplusplus #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /* The cfgetspeed() function is a non-POSIX function will extract the baud * from the termios structure to which the termiosp argument points. NuttX * does not control input/output baud independently. Both must be the same. * The POSIX standard interfaces, cfigetispeed() and cfigetospeed() are * supported by simply defining them to be cfgetspeed(). * The return value is baud value(9600). */ speed_t cfgetspeed(FAR const struct termios *termiosp); #define cfgetispeed(termiosp) cfgetspeed(termiosp) #define cfgetospeed(termiosp) cfgetspeed(termiosp) /* The cfsetspeed() function is a non-POSIX function that sets the baud * stored in the structure pointed to by termiosp to speed. NuttX does * not control input/output baud independently. Both must be the same. * The POSIX standard interfaces, cfigetispeed() and cfigetospeed() are * supported by simply defining them to be cfsetspeed(). * Speed could be baud value(9600) or could be baud mask(B9600). */ int cfsetspeed(FAR struct termios *termiosp, speed_t speed); #define cfsetispeed(termiosp,speed) cfsetspeed(termiosp,speed) #define cfsetospeed(termiosp,speed) cfsetspeed(termiosp,speed) /* The cfmakeraw() function is a non-POSIX function that sets the terminal * to something like the "raw" mode. */ void cfmakeraw(FAR struct termios *termiosp); /* Wait for transmission of output */ int tcdrain(int fd); /* Suspend or restart the transmission or reception of data */ int tcflow(int fd, int action); /* Flush non-transmitted output data, non-read input data or both */ int tcflush(int fd, int cmd); /* Get the parameters associated with the terminal */ int tcgetattr(int fd, FAR struct termios *termiosp); /* Get process group ID for session leader for controlling terminal */ pid_t tcgetsid(int fd); /* Send a "break" for a specific duration */ int tcsendbreak(int fd, int duration); /* Set the parameters associated with the terminal */ int tcsetattr(int fd, int options, FAR const struct termios *termiosp); #undef EXTERN #ifdef __cplusplus } #endif #endif /* CONFIG_SERIAL_TERMIOS */ #endif /* __INCLUDE_TERMIOS_H */