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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.
