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This commit is contained in:
Nick Patavalis
2018-02-20 13:47:02 +02:00
parent ee23af0cb9
commit 3eae4b37c9
2 changed files with 9 additions and 7 deletions
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14
README.md
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@ -334,22 +334,24 @@ baudrate values (like 1234, or 42000, etc) to a serial port, provided
that the underlying driver can handle this. Since release 2.0, picocom
can be compiled with custom baudrate support for some systems. Since
release 3.1 picocom is compiled with custom baudrate support enabled
by default on some systems (like Linux, kernels > 2.6, on ix86 and
ix86_64, modern intel macs, and some other BSDs). In any case, you can
explicitly ask for custom baudrate support to be enabled by compiling
picocom like this:
*by default* on some systems (like Linux, kernels > 2.6, on x86 and
x86_64, modern Intel Macs, and some BSDs). In any case, you can
explicitly ask for custom baudrate support to be *enabled* by
compiling picocom like this:
CPPFLAGS=-DUSE_CUSTOM_BAUD make clean
CPPFLAGS=-DUSE_CUSTOM_BAUD make
If custom baudrate support is not available for your system, the
compilation will fail. Similarly, you can ask for custom baudrate
support to be disabled by compiling like:
support to be *disabled* by compiling like:
CPPFLAGS=-DNO_CUSTOM_BAUD make clean
CPPFLAGS=-DNO_CUSTOM_BAUD make
When picocom is compiled with custom baudrate support on Linux, it
(or you can comment in or out the respective lines in the Makefile)
When picocom is compiled with custom baudrate support *on Linux*, it
uses a new set of ioctl's (TCGETS2, TCSETSF2 vs TCGETS, TCSETSF, etc)
to access the serial ports. It is not impossible that some serial
devices may not accept these new ioctl's (though they should). In

2
termios2.txt
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@ -156,7 +156,7 @@ CBAUD = 0010017 ---> 0001 0000 0000 1111 mask
CBUADEX = 0010000 ---> 0001 0000 0000 0000 extender bit
BOTHER = 0010000 ---> 0001 0000 0000 0000 a reserved code
Usually CBAUD includes CBAUDEX. In any case the mask is always CBAUD &
Usually CBAUD includes CBAUDEX. In any case the mask is always CBAUD |
CBAUDEX (which is usually == CBAUD)
Basic codes (Bxxx & CBAUDEX == 0)