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These functions have no meaning in RTU so it's better to specialize the names and remove them from the backend. - remove the functions from the backend - update tests to handle RTU mode (master and slave) - add command line options to tests (rtu or tcp)
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- move termios header in RTU backend - move TCP headers in TCP backend - use native serial on Win32 for Cygwin - avoid too many defines
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This change fixes a compilation problem in MinGW. As general rule, each header must be as independent as possible.
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Rename the function _modbus_tcp_init to _modbus_tcp_init_win32 and warp the call with #ifdef.
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Before using any functions of the Win32 Socket API we first have to initialise it by calling WSAStartup(). Fixes non-working tests on native Win32. Signed-off-by: Stéphane Raimbault <stephane.raimbault@gmail.com>
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Added support for native Win32 based on https://code.launchpad.net/~thepyper/libmodbus/win32-native This mainly affects the RTU implementation as the TCP/IP socket interface is the same thanks to the winsocks library. The interface for using the serial port is completely different on Win32 and is now implemented accordingly. Signed-off-by: Stéphane Raimbault <stephane.raimbault@gmail.com>
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Introduced the select() operation for backends as the WAIT_DATA macro approach is not very extensible and causes trouble when adding platform- specific codepaths. Signed-off-by: Stéphane Raimbault <stephane.raimbault@gmail.com>
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On Win32 the second argument to recv() and send() is not a void pointer but a char pointer, therefore cast the buffer from uint8_t to char. Signed-off-by: Stéphane Raimbault <stephane.raimbault@gmail.com>
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There are several header files that are already included in modbus.h and thus do not have to be included in the C files. Signed-off-by: Stéphane Raimbault <stephane.raimbault@gmail.com>
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The send() and recv() functions of the backends might require more information than just a file descriptor, therefore pass the complete modbus_t structure. Signed-off-by: Stéphane Raimbault <stephane.raimbault@gmail.com>
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All private functions and constants are now prefixed by _. The modbus protocol uses entry points to call specific functions.