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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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- check strlcpy in configure.ac - test for empty device string - test truncated device string
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modbus_set_slave must be used to set the slave ID of the remote device to talk in master mode and to set the internal slave ID in slave mode. If you talk to several devices, you need to call modbus_set_slave each time the following requests must be sent to another device.
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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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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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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.