Add Parity and Blocking Read support#3
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to avoid, that the source code has to be modified, when more than 64 devices shall be supported, the corresponding defines (COM_MAXDEVICES) can be optionally set in the makefile now. This is especially important on WSL (Windows Subsystem for Linux), which installs 192 serial devices, no matter if there is a real hardware counterpart on the windows side.
The Linuxversion defined __USE_MISC without checking if it was already defined in one of the headers. This might result in compiler warnings. Furthermore the Windowsversion passed size_t types to uint32_t, which caused compiler warnings on MSVC 64bit
If the corresponding macros are available from the OS up to 4MBit are now supported.
the comReadBlocking() allows to specify a timeout. It will wait until 'len' bytes are read or 'timeout' expired.
Now also Parity Bits like ODD and EVEN can be enforced.
During Refactoring conditional defines for macOS were removed accidentially.
In contrary to Windows Linux had XON/XOFF activated, which caused swallowing of the characters 0x11 (input) and 0x13 (output).
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With this extensions the library supports parity checking und blocking reads.
Furthermore some minor additions were added.