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Improve tty.c, fix compilation on Cygwin. (#314)

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`EXTA` and `PENDIN` are not POSIX, so let's not use them.

Make notes that the baud rate constant mapping comes from DLTTY
and add comments explaining the holes.
This commit is contained in:
Bruce Mitchener
2021-01-29 01:20:45 +07:00
committed by GitHub
parent b766153e85
commit 2e83d8e619
1 changed files with 6 additions and 2 deletions
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8
src/tty.c
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@@ -51,7 +51,7 @@ void tty_open(void)
options.c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR); options.c_iflag &= ~(IMAXBEL|IXOFF|INPCK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IGNPAR);
options.c_iflag |= IGNBRK; options.c_iflag |= IGNBRK;
options.c_oflag &= ~OPOST; options.c_oflag &= ~OPOST;
options.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP|PENDIN); options.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|ICANON|ISIG|IEXTEN|NOFLSH|TOSTOP);
options.c_cflag &= ~(CSIZE|PARENB); options.c_cflag &= ~(CSIZE|PARENB);
options.c_cflag |= CS8|CREAD; options.c_cflag |= CS8|CREAD;
options.c_cc[VMIN] = 1; options.c_cc[VMIN] = 1;
@@ -109,6 +109,7 @@ void tty_put(void)
speed_t tty_baudtosymbol(short aBaud) speed_t tty_baudtosymbol(short aBaud)
{ {
/* This matches the constants in DLTTY where possible. */
if (aBaud == 0) return (B50); if (aBaud == 0) return (B50);
if (aBaud == 1) return (B75); if (aBaud == 1) return (B75);
if (aBaud == 2) return (B110); if (aBaud == 2) return (B110);
@@ -117,10 +118,13 @@ speed_t tty_baudtosymbol(short aBaud)
if (aBaud == 5) return (B300); if (aBaud == 5) return (B300);
if (aBaud == 6) return (B600); if (aBaud == 6) return (B600);
if (aBaud == 7) return (B1200); if (aBaud == 7) return (B1200);
if (aBaud == 8) return (B1800);
/* 9 is defined to be 2000, not in POSIX */
if (aBaud == 10) return (B2400); if (aBaud == 10) return (B2400);
/* 11 is defined to be 3600, not in POSIX */
if (aBaud == 12) return (B4800); if (aBaud == 12) return (B4800);
/* 13 is defined to be 7200, not in POSIX */
if (aBaud == 14) return (B9600); if (aBaud == 14) return (B9600);
if (aBaud == 15) return (EXTA);
return (-1); return (-1);
} }