/**************************************************************************** * 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 /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* Terminal input modes (c_iflag in the termios structure) */ #define BRKINT (1 << 0) /* Bit 0: Signal interrupt on break */ #define ICRNL (1 << 1) /* Bit 1: Map CR to NL on input */ #define IGNBRK (1 << 2) /* Bit 2: Ignore break condition */ #define IGNCR (1 << 3) /* Bit 3: Ignore CR */ #define IGNPAR (1 << 4) /* Bit 4: Ignore characters with parity errors */ #define INLCR (1 << 5) /* Bit 5: Map NL to CR on input */ #define INPCK (1 << 6) /* Bit 6: Enable input parity check */ #define ISTRIP (1 << 7) /* Bit 7: Strip character */ #define IUCLC (1 << 8) /* Bit 8: Map upper-case to lower-case on input (LEGACY) */ #define IXANY (1 << 9) /* Bit 9: Enable any character to restart output */ #define IXOFF (1 << 10) /* Bit 10: Enable start/stop input control */ #define IXON (1 << 11) /* Bit 11: Enable start/stop output control */ #define PARMRK (1 << 12) /* Bit 12: Mark parity errors */ /* 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 << 7) /* Bit 7: Select newline delays: */ # define NL0 (0 << 7) /* Newline character type 0 */ # define NL1 (1 << 7) /* Newline character type 1 */ #define CRDLY (3 << 8) /* Bits 8-9: Select carriage-return delays: */ # define CR0 (0 << 8) /* Carriage-return delay type 0 */ # define CR1 (1 << 8) /* Carriage-return delay type 1 */ # define CR2 (2 << 8) /* Carriage-return delay type 2 */ # define CR3 (3 << 8) /* Carriage-return delay type 3 */ #define TABDLY (3 << 10) /* Bit 10-11: Select horizontal-tab delays: */ # define TAB0 (0 << 10) /* Horizontal-tab delay type 0 */ # define TAB1 (1 << 10) /* Horizontal-tab delay type 1 */ # define TAB2 (2 << 10) /* Horizontal-tab delay type 2 */ # define TAB3 (3 << 10) /* Expand tabs to spaces */ #define BSDLY (1 << 12) /* Bit 12: Select backspace delays: */ # define BS0 (0 << 12) /* Backspace-delay type 0 */ # define BS1 (1 << 12) /* Backspace-delay type 1 */ #define VTDLY (1 << 13) /* Bit 13: Select vertical-tab delays: */ # define VT0 (0 << 13) /* Vertical-tab delay type 0 */ # define VT1 (1 << 13) /* Vertical-tab delay type 1 */ #define FFDLY (1 << 14) /* Bit 14: Select form-feed delays: */ # define FF0 (0 << 14) /* Form-feed delay type 0 */ # define FF1 (1 << 14) /* Form-feed delay type 1 */ /* Control Modes (c_cflag in the termios structure) */ #define CSIZE (3 << 0) /* Bits 0-1: Character size: */ # define CS5 (0 << 0) /* 5 bits */ # define CS6 (1 << 0) /* 6 bits */ # define CS7 (2 << 0) /* 7 bits */ # define CS8 (3 << 0) /* 8 bits */ #define CSTOPB (1 << 2) /* Bit 2: Send two stop bits, else one */ #define CREAD (1 << 3) /* Bit 3: Enable receiver */ #define PARENB (1 << 4) /* Bit 4: Parity enable */ #define PARODD (1 << 5) /* Bit 5: Odd parity, else even */ #define HUPCL (1 << 6) /* Bit 6: Hang up on last close */ #define CLOCAL (1 << 7) /* Bit 7: Ignore modem status lines */ #define CCTS_OFLOW (1 << 8) /* Bit 8: CTS flow control of output */ #define CRTSCTS CCTS_OFLOW #define CRTS_IFLOW (1 << 9) /* Bit 9: RTS flow control of input */ /* Local Modes (c_lflag in the termios structure) */ #define ECHO (1 << 0) /* Bit 0: Enable echo */ #define ECHOE (1 << 1) /* Bit 1: Echo erase character as error-correcting backspace */ #define ECHOK (1 << 2) /* Bit 2: Echo KILL */ #define ECHONL (1 << 3) /* Bit 3: Echo NL */ #define ICANON (1 << 4) /* Bit 4: Canonical input (erase and kill processing) */ #define IEXTEN (1 << 5) /* Bit 5: Enable extended input character processing */ #define ISIG (1 << 6) /* Bit 6: Enable signals */ #define NOFLSH (1 << 7) /* Bit 7: Disable flush after interrupt or quit */ #define TOSTOP (1 << 8) /* Bit 8: Send SIGTTOU for background output */ #define XCASE (1 << 9) /* Bit 9: Canonical upper/lower presentation (LEGACY) */ /* The following are subscript names for the termios c_cc array */ #define VEOF 0 /* Bit 0: EOF character (canonical mode) */ #define VMIN VEOF /* Bit 0: MIN value (Non-canonical mode) */ #define VEOL 1 /* Bit 1: EOL character (canonical mode) */ #define VTIME VEOL /* Bit 1: TIME value (Non-canonical mode) */ #define VERASE 2 /* Bit 2: ERASE character (canonical mode) */ #define VINTR 3 /* Bit 3: INTR character */ #define VKILL 4 /* Bit 4: KILL character (canonical mode) */ #define VQUIT 5 /* Bit 5: QUIT character */ #define VSTART 6 /* Bit 6: START character */ #define VSTOP 7 /* Bit 7: STOP character */ #define VSUSP 8 /* Bit 8: SUSP character */ #define NCCS 9 /* Bit 9: 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. * * NOTE that is NuttX that the encoding of the speed_t values is simply the * value of the baud itself. So this opens a window for non-portable abuse * of the speed-related interfaces: The defined values should be used where- * ever possible for reasons of portability. */ #define B0 0 /* Hang up */ #define B50 50 /* 50 baud */ #define B75 75 /* 75 baud */ #define B110 110 /* 110 baud */ #define B134 134 /* 134.5 baud */ #define B150 150 /* 150 baud */ #define B200 200 /* 200 baud */ #define B300 300 /* 300 baud */ #define B600 600 /* 600 baud */ #define B1200 1200 /* 1,200 baud */ #define B1800 1800 /* 1,800 baud */ #define B2400 2400 /* 2,400 baud */ #define B4800 4800 /* 4,800 baud */ #define B9600 9600 /* 9,600 baud */ #define B19200 19200 /* 19,200 baud */ #define B38400 38400 /* 38,400 baud */ #define B57600 57600 /* 57,600 baud */ #define B115200 115200 /* 115,200 baud */ #define B128000 128000 /* 128,000 baud */ #define B230400 230400 /* 230,400 baud */ #define B256000 256000 /* 256,000 baud */ #define B460800 460800 /* 460,800 baud */ #define B500000 500000 /* 500,000 baud */ #define B576000 576000 /* 576,000 baud */ #define B921600 921600 /* 921,600 baud */ #define B1000000 1000000 /* 1,000,000 baud */ #define B1152000 1152000 /* 1,152,000 baud */ #define B1500000 1500000 /* 1,500,000 baud */ #define B2000000 2000000 /* 2,000,000 baud */ #define B2500000 2500000 /* 2,500,000 baud */ #define B3000000 3000000 /* 3,000,000 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. Flush untransmitted output */ #define TCIOFLUSH 1 /* Flush both pending input and untransmitted output */ #define TCOFLUSH 2 /* Flush untransmitted output */ /* Constants for use with tcflow() */ #define TCIOFF 0 /* Transmit a STOP character, intended to suspend input data */ #define TCION 1 /* Transmit a START character, intended to restart input data */ #define TCOOFF 2 /* Suspend output */ #define TCOON 3 /* Restart output */ /**************************************************************************** * Public Type Definitions ****************************************************************************/ /* Baud rate selection */ typedef uint32_t speed_t; /* Used for terminal baud rates */ /* Types used within the termios structure */ typedef uint16_t tcflag_t; /* Used for terminal modes */ typedef int 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(). */ 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(). */ int cfsetspeed(FAR struct termios *termiosp, speed_t speed); #define cfsetispeed(termiosp,speed) cfsetspeed(termiosp,speed) #define cfsetospeed(termiosp,speed) cfsetspeed(termiosp,speed) /* 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 /* __INCLUDE_TERMIOS_H */