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><H1
><A
NAME="function.openusbsetdebug"
></A
><CODE
CLASS="function"
>openusb_set_debug</CODE
></H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN126"
></A
><H2
>Name</H2
><CODE
CLASS="function"
>openusb_set_debug</CODE
> -- Set debug information</DIV
><DIV
CLASS="refsynopsisdiv"
><A
NAME="AEN130"
></A
><H2
>Synopsis</H2
><DIV
CLASS="funcsynopsis"
><P
></P
><A
NAME="AEN131"
></A
><P
><CODE
><CODE
CLASS="FUNCDEF"
>void openusb_set_debug</CODE
>(openusb_handle_t *handle , uint32_t level , uint32_t flags , openusb_debug_callback_t callback );</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN143"
></A
><H2
>Parameters</H2
><P
><CODE
CLASS="parameter"
> handle </CODE
> - An openusb instance handle, obtained in <CODE
CLASS="function"
>openusb_init</CODE
>.
</P
><P
><CODE
CLASS="parameter"
> level</CODE
> - Not used. Reserved.</P
><P
> <CODE
CLASS="parameter"
> flags </CODE
> - Not used in this release. Reserved.</P
><P
><CODE
CLASS="parameter"
>callback</CODE
> - Application supplied debug routine.</P
></DIV
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><A
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></A
><H2
>Description</H2
><P
>Application can call <CODE
CLASS="function"
>openusb_set_debug()</CODE
> to enable tracing
of openusb with increasing level of detail. callback is application defined debug function.
If it is NULL, the library embedded debug function is used and debug messages, if any and
debug level set properly, will go to stderr. </P
><P
>This operation will override the <CODE
CLASS="envar"
>USB_DEBUG</CODE
> environment variable, if set.
</P
></DIV
><DIV
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><A
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></A
><H2
> Return Value </H2
><P
> None </P
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></A
><H2
> See Also </H2
><P
> <A
HREF="function.openusbinit.html"
><CODE
CLASS="function"
>openusb_init, openusb_fini</CODE
></A
>
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