include/termios.h: Update comments; fix long lines.
This commit is contained in:
Gregory Nutt
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ff8cdcc89f
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@ -58,7 +58,8 @@
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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 IUCLC (1 << 8) /* Bit 8: Map upper-case to lower-case on input
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* (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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@ -67,7 +68,8 @@
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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 OLCUC (1 << 1) /* Bit 1: Map lower-case to upper-case on
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* * 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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@ -116,22 +118,47 @@
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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 ECHOE (1 << 1) /* Bit 1: Echo erase character as error-
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* 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 ICANON (1 << 4) /* Bit 4: Canonical input (erase and kill
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* processing) */
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#define IEXTEN (1 << 5) /* Bit 5: Enable extended input character
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* 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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#define XCASE (1 << 9) /* Bit 9: Canonical upper/lower presentation
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* (LEGACY) */
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/* The following are subscript names for the termios c_cc array */
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/* The following are subscript names for the termios c_cc array.
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*
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* Common characters: VINTR, VQUIT, VSTART, VSTOP, VSUSP
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*
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* VINTR: Interrupt character (Default ETX, Control-C)
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* VQUIT: Quit character (Default FS, Control-\)
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* VSTART: Start character (Default DC1, Control-Q)
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* VSTOP: Stop character (Default DC3, Control-S)
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* VSUSP: Suspend character (Default SUB, Control-Z)
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*
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* Canonical mode: Adds VEOF, VEOL, VERASE, VKILL
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*
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* VEOL: End-of-file character (Default SUB, Control-Z)
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* VEOF: End-of-line character (Default NUL)
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* VERASE: Erase character (Default DEL or BS, Control-H)
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* VKILL: Kill character (Default NAK or BS, Control-U)
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*
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* Non-canonical mode: Adds VMIN, VTIME
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*
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* VMIN: Minimum number of characters for non-canonical read
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* VTIME: Timeout in deciseconds for non-canonical read
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*/
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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 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 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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@ -139,11 +166,13 @@
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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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#define NCCS 9 /* Bit 9: Size of the array c_cc for control
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* 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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/* Baud Rate Selection. These are instances of type speed_t. Values of
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* 38400 and below are specified by POSIX; values above 38400 are sometimes
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* referred to as extended values and most values appear in most termios.h
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* 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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@ -188,18 +217,23 @@
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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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#define TCSAFLUSH 2 /* Change attributes when output has drained;
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* 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 TCIFLUSH 0 /* Flush pending input. Flush untransmitted
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* output */
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#define TCIOFLUSH 1 /* Flush both pending input and untransmitte
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* 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 TCIOFF 0 /* Transmit a STOP character, intended to
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* suspend input data */
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#define TCION 1 /* Transmit a START character, intended to
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* 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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