libmodbus/doc/modbus_set_debug.txt

modbus_set_debug(3)
===================

NAME
----
modbus_set_debug - set debug flag of the context


SYNOPSIS
--------
*int modbus_set_debug(modbus_t *'ctx', int 'flag');*


DESCRIPTION
-----------
The _modbus_set_debug()_ function shall set the debug flag of the *modbus_t*
context by using the argument 'flag'. By default, the boolean flag is set to
'FALSE'. When the 'flag' value is set to 'TRUE', many verbose messages are
displayed on stdout and stderr. For example, this flag is useful to display the
bytes of the Modbus messages.

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RETURN VALUE
------------
The function shall return 0 if successful. Otherwise it shall return -1 and set errno.


AUTHORS
-------
The libmodbus documentation was written by Stéphane Raimbault
<stephane.raimbault@gmail.com>