Peter M. Groen / libmodbus

Thanks to Lars Täuber.
The documentation still missing for modbus_set_float_*

Thanks to Lars Taeuber.

This allows to place the coils/registers at any virtual
start address, not only at address 0. This can be useful e.g.
when the server has to fulfill a specification in which
registers are expected at predefined locations.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

- only check if documentation tools are installed in acinclude.m4
- don't provide built documentation in dist tarball
- simpler Makefile
- display warning message and check result

It concerns only the files in 'tests' directory.

- protect against NULL IP address BTW
- update documentation

- allow an empty string or NULL for node argument
- protect against NULL in service argument
- new test for NULL service
- update documentation

Change API of function for libmodbus v3.2.0

The report slave id function returns the number of bytes as the _return_
value, and does not include it as the first byte in the dest buffer.

Update documentation to reflect reality.  There's no missing
functionality, just slightly confusing documentation.

- add byte timeout tests (TCP backend only)
- update and improve documentation
- long timeout values are now uint32_t so it changes the API
  to disable byte timeout

- update documentation
- 5 new tests
- updated NEWS file
- avoid include of time.h

Related to https://github.com/stephane/libmodbus/issues/83

- change return argument from void to int
- update documentation

Thanks to Karl Palsson.