'\" t
.\" Title: modbus_set_debug
.\" Author: [see the "AUTHORS" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot
.\" Date: 10/15/2022
.\" Manual: libmodbus Manual
.\" Source: libmodbus v3.1.6
.\" Language: English
.\"
.TH "MODBUS_SET_DEBUG" "3" "10/15/2022" "libmodbus v3\&.1\&.6" "libmodbus Manual"
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.SH "NAME"
modbus_set_debug \- set debug flag of the context
.SH "SYNOPSIS"
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\fBint modbus_set_debug(modbus_t *\fR\fB\fIctx\fR\fR\fB, int \fR\fB\fIflag\fR\fR\fB);\fR
.SH "DESCRIPTION"
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The \fBmodbus_set_debug()\fR function shall set the debug flag of the \fBmodbus_t\fR context by using the argument \fIflag\fR\&. By default, the boolean flag is set to FALSE\&. When the \fIflag\fR 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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[00][14][00][00][00][06][12][03][00][6B][00][03]
Waiting for a confirmation\&...
<00><14><00><00><00><09><12><03><06><02><2B><00><00><00><00>
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.SH "RETURN VALUE"
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The function shall return 0 if successful\&. Otherwise it shall return \-1 and set errno\&.
.SH "AUTHORS"
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The libmodbus documentation was written by Stéphane Raimbault