libc/termios: modify termios setting follow linux and posix
Change-Id: Id323b3169e74f4153fd8d132d20926b7fb8336a3 Signed-off-by: dongjiuzhu <dongjiuzhu1@xiaomi.com>
This commit is contained in:
dongjiuzhu
Matias N
parent
3634bb6ba5
commit
03c7951cbd
5 changed files with 308 additions and 303 deletions
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@ -50,87 +50,81 @@
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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
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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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#define PARMRK (1 << 12) /* Bit 12: Mark parity errors */
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#define IGNBRK (1 << 0) /* Bit 0: Ignore break condition */
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#define BRKINT (1 << 1) /* Bit 1: Signal interrupt on break */
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#define IGNPAR (1 << 2) /* Bit 2: Ignore characters with parity errors */
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#define PARMRK (1 << 3) /* Bit 3: Mark parity errors */
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#define INPCK (1 << 4) /* Bit 4: Enable input parity check */
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#define ISTRIP (1 << 5) /* Bit 5: Strip character */
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#define INLCR (1 << 6) /* Bit 6: Map NL to CR on input */
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#define IGNCR (1 << 7) /* Bit 7: Ignore CR */
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#define ICRNL (1 << 8) /* Bit 8: Map CR to NL on input */
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#define IUCLC (1 << 9) /* Bit 9: Map upper-case to lower-case on input (LEGACY) */
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#define IXON (1 << 10) /* Bit 10: Enable start/stop output control */
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#define IXANY (1 << 11) /* Bit 11: Enable any character to restart output */
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#define IXOFF (1 << 12) /* Bit 12: Enable start/stop input control */
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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
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* * output (LEGACY) */
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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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#define NLDLY (1 << 8) /* Bit 8: Select newline delays: */
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# define NL0 (0 << 8) /* Newline character type 0 */
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# define NL1 (1 << 8) /* Newline character type 1 */
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#define CRDLY (3 << 9) /* Bits 9-10: Select carriage-return delays: */
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# define CR0 (0 << 9) /* Carriage-return delay type 0 */
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# define CR1 (1 << 9) /* Carriage-return delay type 1 */
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# define CR2 (2 << 9) /* Carriage-return delay type 2 */
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# define CR3 (3 << 9) /* Carriage-return delay type 3 */
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#define TABDLY (3 << 11) /* Bits 11-12: Select horizontal-tab delays: */
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# define TAB0 (0 << 11) /* Horizontal-tab delay type 0 */
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# define TAB1 (1 << 11) /* Horizontal-tab delay type 1 */
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# define TAB2 (2 << 11) /* Horizontal-tab delay type 2 */
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# define TAB3 (3 << 11) /* Expand tabs to spaces */
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#define BSDLY (1 << 13) /* Bit 13: Select backspace delays: */
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# define BS0 (0 << 13) /* Backspace-delay type 0 */
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# define BS1 (1 << 13) /* Backspace-delay type 1 */
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#define VTDLY (1 << 14) /* Bit 14: Select vertical-tab delays: */
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# define VT0 (0 << 14) /* Vertical-tab delay type 0 */
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# define VT1 (1 << 14) /* Vertical-tab delay type 1 */
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#define FFDLY (1 << 15) /* Bit 15: Select form-feed delays: */
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# define FF0 (0 << 15) /* Form-feed delay type 0 */
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# define FF1 (1 << 15) /* 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 CRTS_IFLOW (1 << 9) /* Bit 9: RTS flow control of input */
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#define CRTSCTS (CRTS_IFLOW | CCTS_OFLOW)
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#define CSIZE (3 << 4) /* Bits 4-5: Character size: */
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# define CS5 (0 << 4) /* 5 bits */
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# define CS6 (1 << 4) /* 6 bits */
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# define CS7 (2 << 4) /* 7 bits */
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# define CS8 (3 << 4) /* 8 bits */
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#define CSTOPB (1 << 6) /* Bit 6: Send two stop bits, else one */
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#define CREAD (1 << 7) /* Bit 7: Enable receiver */
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#define PARENB (1 << 8) /* Bit 8: Parity enable */
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#define PARODD (1 << 9) /* Bit 9: Odd parity, else even */
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#define HUPCL (1 << 10) /* Bit 10: Hang up on last close */
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#define CLOCAL (1 << 11) /* Bit 11: Ignore modem status lines */
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#define CCTS_OFLOW (1 << 29)/* Bit 29: CTS flow control of output */
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#define CRTS_IFLOW (1 << 31)/* Bit 31: RTS flow control of input */
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#define CRTSCTS (CCTS_OFLOW | CRTS_IFLOW)
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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-
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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
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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 ISIG (1 << 0) /* Bit 0: Enable signals */
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#define ICANON (1 << 1) /* Bit 1: Canonical input (erase and kill processing) */
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#define XCASE (1 << 2) /* Bit 2: Canonical upper/lower presentation (LEGACY) */
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#define ECHO (1 << 3) /* Bit 3: Enable echo */
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#define ECHOE (1 << 4) /* Bit 4: Echo erase character as error correcting backspace */
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#define ECHOK (1 << 5) /* Bit 5: Echo KILL */
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#define ECHONL (1 << 6) /* Bit 6: Echo NL */
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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
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* (LEGACY) */
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#define IEXTEN (1 << 15) /* Bit 15: Enable extended input character processing */
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/* The following are subscript names for the termios c_cc array.
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*
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@ -155,63 +149,57 @@
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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 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 VINTR 0 /* Bit 0: INTR character */
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#define VQUIT 1 /* Bit 1: QUIT character */
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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
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* characters */
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#define VKILL 3 /* Bit 3: KILL character (canonical mode) */
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#define VEOF 4 /* Bit 4: EOF character (canonical mode) */
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#define VTIME 5 /* Bit 5: TIME value (non-canonical mode) */
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#define VMIN 6 /* Bit 6: MIN value (non-canonical mode) */
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#define VSTART 8 /* Bit 8: START character */
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#define VSTOP 9 /* Bit 9: STOP character */
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#define VSUSP 10 /* Bit 10: SUSP character */
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#define VEOL 11 /* Bit 11: EOL character (canonical mode) */
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#define NCCS 12 /* Bit 12: 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
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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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* 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 B0 0000000 /* Hang up */
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#define B50 0000001 /* 50 baud */
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#define B75 0000002 /* 75 baud */
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#define B110 0000003 /* 110 baud */
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#define B134 0000004 /* 134.5 baud */
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#define B150 0000005 /* 150 baud */
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#define B200 0000006 /* 200 baud */
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#define B300 0000007 /* 300 baud */
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#define B600 0000010 /* 600 baud */
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#define B1200 0000011 /* 1,200 baud */
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#define B1800 0000012 /* 1,800 baud */
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#define B2400 0000013 /* 2,400 baud */
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#define B4800 0000014 /* 4,800 baud */
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#define B9600 0000015 /* 9,600 baud */
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#define B19200 0000016 /* 19,200 baud */
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#define B38400 0000017 /* 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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#define B57600 0010001 /* 57,600 baud */
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#define B115200 0010002 /* 115,200 baud */
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#define B230400 0010003 /* 230,400 baud */
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#define B460800 0010004 /* 460,800 baud */
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#define B500000 0010005 /* 500,000 baud */
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#define B576000 0010006 /* 576,000 baud */
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#define B921600 0010007 /* 921,600 baud */
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#define B1000000 0010010 /* 1,000,000 baud */
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#define B1152000 0010011 /* 1,152,000 baud */
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#define B1500000 0010012 /* 1,500,000 baud */
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#define B2000000 0010013 /* 2,000,000 baud */
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#define B2500000 0010014 /* 2,500,000 baud */
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#define B3000000 0010015 /* 3,000,000 baud */
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#define B3500000 0010016 /* 3,500,000 baud */
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#define B4000000 0010017 /* 4,000,000 baud */
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/* Attribute Selection (used with tcsetattr()) */
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@ -223,18 +211,18 @@
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/* Line Control (used with tcflush()) */
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#define TCIFLUSH 0 /* Flush pending input */
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#define TCIOFLUSH 1 /* Flush both pending input and untransmitted
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#define TCOFLUSH 1 /* Flush untransmitted output */
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#define TCIOFLUSH 2 /* Flush both pending input and untransmitted
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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
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#define TCOOFF 0 /* Suspend output */
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#define TCOON 1 /* Restart output */
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#define TCIOFF 2 /* 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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#define TCION 3 /* 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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/****************************************************************************
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* Public Type Definitions
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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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typedef unsigned int 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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typedef unsigned int tcflag_t; /* Used for terminal modes */
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typedef unsigned char cc_t; /* Used for terminal special characters */
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/* The termios structure */
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@ -260,13 +248,6 @@ struct termios
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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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@ -286,6 +267,7 @@ extern "C"
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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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* The return value is baud value(9600).
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*/
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speed_t cfgetspeed(FAR const struct termios *termiosp);
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@ -297,6 +279,7 @@ speed_t cfgetspeed(FAR const struct termios *termiosp);
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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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* Speed could be baud value(9600) or could be baud mask(B9600).
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*/
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int cfsetspeed(FAR struct termios *termiosp, speed_t speed);
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@ -337,7 +320,6 @@ int tcsendbreak(int fd, int duration);
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int tcsetattr(int fd, int options, FAR const struct termios *termiosp);
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#undef EXTERN
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#ifdef __cplusplus
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}
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@ -40,7 +40,7 @@ ifeq ($(CONFIG_SERIAL_TERMIOS),y)
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# Add the termios C files to the build
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CSRCS += lib_cfgetspeed.c lib_cfsetspeed.c lib_cfmakeraw.c lib_isatty.c lib_tcflush.c
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CSRCS += lib_cfspeed.c lib_cfmakeraw.c lib_isatty.c lib_tcflush.c
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CSRCS += lib_tcflow.c lib_tcgetattr.c lib_tcsetattr.c
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# Add the termios directory to the build
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@ -1,77 +0,0 @@
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/****************************************************************************
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* libs/libc/termios/lib_cfgetspeed.c
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*
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* Copyright (C) 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
|
||||
* 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.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <termios.h>
|
||||
#include <assert.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: cfgetspeed
|
||||
*
|
||||
* Description:
|
||||
* The cfgetspeed() function is a non-POSIX function will extract the baud
|
||||
* from the termios structure to which the termiosp argument points.
|
||||
*
|
||||
* This function will return exactly the value in the termios data
|
||||
* structure, without interpretation.
|
||||
*
|
||||
* NOTE 1: NuttX does not control input/output baud independently. Both
|
||||
* must be the same. The POSIX standard interfaces, cfisetispeed() and
|
||||
* cfisetospeed() are defined to be cfgetspeed() in termios.h.
|
||||
* NOTE 2. In Nuttx, the speed_t is defined to be uint32_t and the baud
|
||||
* encodings of termios.h are the actual baud values themselves. Therefore,
|
||||
* any baud value may be returned here... not just those enumerated in
|
||||
* termios.h
|
||||
*
|
||||
* Input Parameters:
|
||||
* termiosp - The termiosp argument is a pointer to a termios structure.
|
||||
*
|
||||
* Returned Value:
|
||||
* Encoded baud value from the termios structure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
speed_t cfgetspeed(FAR const struct termios *termiosp)
|
||||
{
|
||||
DEBUGASSERT(termiosp);
|
||||
return termiosp->c_speed;
|
||||
}
|
||||
|
|
@ -1,96 +0,0 @@
|
|||
/****************************************************************************
|
||||
* libs/libc/termios/lib_cfsetspeed.c
|
||||
*
|
||||
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <gnutt@nuttx.org>
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <termios.h>
|
||||
#include <assert.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Name: cfsetspeed
|
||||
*
|
||||
* Description:
|
||||
* The cfsetspeed() function is a non-POSIX function that sets the baud
|
||||
* stored in the structure pointed to by termiosp to speed.
|
||||
*
|
||||
* There is no effect on the baud set in the hardware until a subsequent
|
||||
* successful call to tcsetattr() on the same termios structure.
|
||||
*
|
||||
* NOTE 1: NuttX does not control input/output baud independently. Both
|
||||
* must be the same. The POSIX standard interfaces, cfisetispeed() and
|
||||
* cfisetospeed() are defined to be cfsetspeed() in termios.h.
|
||||
*
|
||||
* NOTE 3: A consequence of NOTE 1 is that you should never attempt to
|
||||
* set the input and output baud to different values.
|
||||
*
|
||||
* Also, the following POSIX requirement cannot be supported: "If the input
|
||||
* baud rate stored in the termios structure pointed to by termios_p is 0,
|
||||
* the input baud rate given to the hardware will be the same as the output
|
||||
* baud rate stored in the termios structure."
|
||||
*
|
||||
* NOTE 2. In Nuttx, the speed_t is defined to be uint32_t and the baud
|
||||
* encodings of termios.h are the actual baud values themselves. Therefore,
|
||||
* any baud value can be provided as the speed argument here. However, if
|
||||
* you do so, your code will *NOT* be portable to other environments where
|
||||
* speed_t is smaller and where the termios.h baud values are encoded! To
|
||||
* avoid portability issues, use the baud definitions in termios.h!
|
||||
*
|
||||
* Linux, for example, would require this (also non-portable) sequence:
|
||||
*
|
||||
* cfsetispeed(termiosp, BOTHER);
|
||||
* termiosp->c_ispeed = baud;
|
||||
*
|
||||
* cfsetospeed(termiosp, BOTHER);
|
||||
* termiosp->c_ospeed = baud;
|
||||
*
|
||||
* Input Parameters:
|
||||
* termiosp - The termiosp argument is a pointer to a termios structure.
|
||||
* speed - The new input speed
|
||||
*
|
||||
* Returned Value:
|
||||
* Baud is not checked... OK is always returned (this is non-standard
|
||||
* behavior).
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int cfsetspeed(FAR struct termios *termiosp, speed_t speed)
|
||||
{
|
||||
DEBUGASSERT(termiosp);
|
||||
termiosp->c_speed = speed;
|
||||
return OK;
|
||||
}
|
||||
196
libs/libc/termios/lib_cfspeed.c
Normal file
196
libs/libc/termios/lib_cfspeed.c
Normal file
|
|
@ -0,0 +1,196 @@
|
|||
/****************************************************************************
|
||||
* libs/libc/termios/lib_cfspeed.c
|
||||
*
|
||||
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||||
* contributor license agreements. See the NOTICE file distributed with
|
||||
* this work for additional information regarding copyright ownership. The
|
||||
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance with the
|
||||
* License. You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
* License for the specific language governing permissions and limitations
|
||||
* under the License.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <termios.h>
|
||||
#include <assert.h>
|
||||
#include <errno.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
#define CBAUD 0010017 /* Baud speed mask (not in POSIX) */
|
||||
#define CBAUDEX 0010000 /* Extra baud speed mask, included in CBAUD.
|
||||
* (not in POSIX) */
|
||||
|
||||
#define ARRAYSIZE(a) (sizeof((a))/sizeof(a[0]))
|
||||
|
||||
/****************************************************************************
|
||||
* Private Data
|
||||
****************************************************************************/
|
||||
|
||||
/* Routine which returns the baud rate of the tty
|
||||
*
|
||||
* Note that the baud_table needs to be kept in sync with the
|
||||
* include/termios.h file.
|
||||
*/
|
||||
|
||||
static const speed_t g_baud_table[] =
|
||||
{
|
||||
0, 50, 75, 110, 134,
|
||||
150, 200, 300, 600, 1200,
|
||||
1800, 2400, 4800, 9600, 19200,
|
||||
38400, 57600, 115200, 230400, 460800,
|
||||
500000, 576000, 921600, 1000000, 1152000,
|
||||
1500000, 2000000, 2500000, 3000000, 3500000,
|
||||
4000000
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
static int baud_mask(speed_t speed)
|
||||
{
|
||||
speed_t idx = 0;
|
||||
|
||||
for (; idx < ARRAYSIZE(g_baud_table); idx++)
|
||||
{
|
||||
if (speed == g_baud_table[idx])
|
||||
{
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* we don't find the speed value, it could be mask */
|
||||
|
||||
if (idx == ARRAYSIZE(g_baud_table))
|
||||
{
|
||||
return (speed & ~CBAUD) ? -1 : speed;
|
||||
}
|
||||
|
||||
/* If idx > B38400, we should will idx minus 15, and or CBAUDEX */
|
||||
|
||||
if (idx > B38400)
|
||||
{
|
||||
idx -= B38400;
|
||||
idx |= CBAUDEX;
|
||||
}
|
||||
|
||||
return idx;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: cfsetspeed
|
||||
*
|
||||
* Description:
|
||||
* The cfsetspeed() function is a non-POSIX function that sets the baud
|
||||
* stored in the structure pointed to by termiosp to speed.
|
||||
*
|
||||
* There is no effect on the baud set in the hardware until a subsequent
|
||||
* successful call to tcsetattr() on the same termios structure.
|
||||
*
|
||||
* NOTE 1: NuttX does not control input/output baud independently. Both
|
||||
* must be the same. The POSIX standard interfaces, cfisetispeed() and
|
||||
* cfisetospeed() are defined to be cfsetspeed() in termios.h.
|
||||
*
|
||||
* NOTE 3: A consequence of NOTE 1 is that you should never attempt to
|
||||
* set the input and output baud to different values.
|
||||
*
|
||||
* Also, the following POSIX requirement cannot be supported: "If the input
|
||||
* baud rate stored in the termios structure pointed to by termios_p is 0,
|
||||
* the input baud rate given to the hardware will be the same as the output
|
||||
* baud rate stored in the termios structure."
|
||||
*
|
||||
* NOTE 2. In Nuttx, the speed_t is defined to be unsigned int and the baud
|
||||
* encodings of termios.h are baud value mask. And their corresponding
|
||||
* values are in array g_baud_table. However, if you do so, your code will
|
||||
* *NOT* be portable to other environments where speed_t is smaller and
|
||||
* where the termios.h baud values are encoded! To avoid portability
|
||||
* issues, use the baud definitions in termios.h!
|
||||
*
|
||||
* Linux, for example, would require this (also non-portable) sequence:
|
||||
*
|
||||
* cfsetispeed(termiosp, BOTHER);
|
||||
* termiosp->c_ispeed = baud;
|
||||
*
|
||||
* cfsetospeed(termiosp, BOTHER);
|
||||
* termiosp->c_ospeed = baud;
|
||||
*
|
||||
* Input Parameters:
|
||||
* termiosp - The termiosp argument is a pointer to a termios structure.
|
||||
* speed - The new input speed. It could be baud rate or could be mask.
|
||||
*
|
||||
* Returned Value:
|
||||
* Baud is returned. If speed don't match g_baud_table and mask in
|
||||
* termios.h, -1 is returned and set errno EINVAL.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int cfsetspeed(FAR struct termios *termiosp, speed_t speed)
|
||||
{
|
||||
int mask = baud_mask(speed);
|
||||
|
||||
DEBUGASSERT(termiosp);
|
||||
if (mask == -1)
|
||||
{
|
||||
set_errno(EINVAL);
|
||||
return mask;
|
||||
}
|
||||
|
||||
termiosp->c_cflag &= ~CBAUD;
|
||||
termiosp->c_cflag |= mask;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: cfgetspeed
|
||||
*
|
||||
* Description:
|
||||
* The cfgetspeed() function is a non-POSIX function will extract the baud
|
||||
* from the termios structure to which the termiosp argument points.
|
||||
*
|
||||
* This function will return exactly the value in the termios data
|
||||
* structure, without interpretation.
|
||||
*
|
||||
* NOTE 1: NuttX does not control input/output baud independently. Both
|
||||
* must be the same. The POSIX standard interfaces, cfisetispeed() and
|
||||
* cfisetospeed() are defined to be cfgetspeed() in termios.h.
|
||||
* NOTE 2. In Nuttx, the speed_t is defined to be uint32_t and the baud
|
||||
* encodings of termios.h are the actual baud values themselves. Therefore,
|
||||
* any baud value may be returned here... not just those enumerated in
|
||||
* termios.h
|
||||
*
|
||||
* Input Parameters:
|
||||
* termiosp - The termiosp argument is a pointer to a termios structure.
|
||||
*
|
||||
* Returned Value:
|
||||
* Encoded baud value from the termios structure.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
speed_t cfgetspeed(FAR const struct termios *termiosp)
|
||||
{
|
||||
int idx;
|
||||
|
||||
DEBUGASSERT(termiosp);
|
||||
idx = termiosp->c_cflag & CBAUD & ~CBAUDEX;
|
||||
idx += (termiosp->c_cflag & CBAUDEX) ? 15 : 0;
|
||||
return g_baud_table[idx];
|
||||
}
|
||||
Loading…
Reference in a new issue