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--- system:console:stty [2007/05/17 14:32] – external edit 127.0.0.1
+++ system:console:stty [2023/01/24 12:54] (current) – phil
@@ Line 12: / Line 12: @@
   * ''Signal'' is one of the predefined ones, see ''stty(1)''.
-  * ''Sequence'' maybe anything possible, but a good choice is defining an Escape Sequence (beginning with ''^'').
+  * ''Sequence'' maybe anything possible, but a good choice is defining an Escape Sequence (starting with ''^'').
 Example:
    stty stop ^Y
-**NB:** normal Sequences are interpreted case sensitive, but Escape Sequences not!
+**NB:** Regular sequences are interpreted case sensitive, escape sequences are not!
 ===== The ''^S''-Problem =====
-You typed //C-s//? Terminal hangs? No wonder, you sent a ''stop'' signal to it.
+You typed //C-s//? Terminal hangs? In fact, you sent a ''stop'' signal.
-Do not even try, typing ''reset'' does not help you.
+Do not even try, typing ''reset'' does not help.
-To get the solution watch at ''stty -a'':
+The output of ''stty -a'' gives some insight:
   % stty -a
   speed 38400 baud; rows 51; columns 89; line = 54;
@@ Line 36: / Line 36: @@
   opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
   isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke
-Interesting are the values for ''stop'' and ''start'':
+The values for ''stop'' and ''start'' are relevant here:
   start = ^Q;
   stop = ^S;
-So, typing //C-q// should suffice to rescue your terminal session.
+Therefore, typing //C-q// should bring things back to normal.
+===== Serial Terminal Baud Rate =====
+''stty'' can set the terminal's baud rate and it receives feedback whether the
+value was accepted. This may be used to find out what max baud rate a serial
+port supports. A simple script could loop over:
+  # stty -F /dev/ttyX <value>
+checking the return value. With regular serial ports, max speed is typically
+baud. USB-serial-adapters may do more, relevant with some OBD2-adapters
+for car diagnostics.
+Standard baud values are found in ///usr/include/asm-generic/termbits.h// and
+///usr/include/asm-generic/termbits-common.h// as defines with name ''B<value>'':
+  #define     B0          0x00000000      /* hang up */
+  #define    B50          0x00000001
+  #define    B75          0x00000002
+  #define   B110          0x00000003
+  #define   B134          0x00000004
+  #define   B150          0x00000005
+  #define   B200          0x00000006
+  #define   B300          0x00000007
+  #define   B600          0x00000008
+  #define  B1200          0x00000009
+  #define  B1800          0x0000000a
+  #define  B2400          0x0000000b
+  #define  B4800          0x0000000c
+  #define  B9600          0x0000000d
+  #define B19200          0x0000000e
+  #define B38400          0x0000000f
+  #define     B57600      0x00001001
+  #define    B115200      0x00001002
+  #define    B230400      0x00001003
+  #define    B460800      0x00001004
+  #define    B500000      0x00001005
+  #define    B576000      0x00001006
+  #define    B921600      0x00001007
+  #define   B1000000      0x00001008
+  #define   B1152000      0x00001009
+  #define   B1500000      0x0000100a
+  #define   B2000000      0x0000100b
+  #define   B2500000      0x0000100c
+  #define   B3000000      0x0000100d
+  #define   B3500000      0x0000100e
+  #define   B4000000      0x0000100f