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><H1
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><A
NAME="COMPAT-UITRON-INTERRUPT-MANAGEMENT-FUNCTIONS">Interrupt management functions</H1
><P
>These functions are fully supported in this release:</P
><TABLE
BORDER="5"
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WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void <TT
CLASS="FUNCTION"
> ret_int</TT
>( void )</PRE
></TD
></TR
></TABLE
><TABLE
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><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>loc_cpu</TT
>( void )</PRE
></TD
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><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>unl_cpu</TT
>( void )</PRE
></TD
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><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>dis_int</TT
>(
UINT <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>eintno</I
></SPAN
> )</PRE
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><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>ena_int</TT
>(
UINT <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>eintno</I
></SPAN
> )</PRE
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><PRE
CLASS="PROGRAMLISTING"
>void <TT
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></SPAN
> )</PRE
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UID<SPAN
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T_MSG<SPAN
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> *pk_msg</I
></SPAN
> )</PRE
></TD
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></TABLE
><P
>Note that <TT
CLASS="FUNCTION"
>ret_int()</TT
> and
the <TT
CLASS="FUNCTION"
>ret_wup()</TT
> are implemented
as macros, containing a “return” statement.</P
><P
>Also note that <TT
CLASS="FUNCTION"
>ret_wup()</TT
> and
the <TT
CLASS="FUNCTION"
>ixxx_yyy()</TT
> style functions
will only work when called from an ISR whose associated DSR is <TT
CLASS="FUNCTION"
>cyg_uitron_dsr()</TT
>,
as specified in include file <TT
CLASS="FILENAME"
><cyg/compat/uitron/uit_ifnc.h></TT
>,
which defines the <TT
CLASS="FUNCTION"
>ixxx_yyy()</TT
> style
functions also.</P
><P
>If you are writing interrupt handlers more in the
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>eCos</I
></SPAN
> style, with separate ISR and DSR routines both of
your own devising, do not use these special functions from a DSR: use plain
<TT
CLASS="FUNCTION"
>xxx_yyy()</TT
> style functions (with no ‘i’ prefix)
instead, and do not call any µITRON functions from the ISR at
all.</P
><P
>The following functions are not supported in this release: </P
><TABLE
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><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>def_int</TT
>(
UINT <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>dintno,</I
></SPAN
>
T_DINT *<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>pk_dint</I
></SPAN
> )</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>chg_iXX</TT
>(
UINT <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>iXXXX</I
></SPAN
> )
</PRE
></TD
></TR
></TABLE
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
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><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>ER <TT
CLASS="FUNCTION"
>ref_iXX</TT
>(
UINT * <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>p_iXXXX</I
></SPAN
> )</PRE
></TD
></TR
></TABLE
><P
>These unsupported functions are all Level C (CPU dependent).
Equivalent functionality is available via other <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>eCos</I
></SPAN
>-specific
APIs. </P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN13831">Error checking</H2
><P
>The following conditions are only checked for, and only return
errors if
<TT
CLASS="LITERAL"
>CYGSEM_UITRON_BAD_PARAMS_RETURN_ERRORS</TT
>
is enabled:</P
><P
></P
><UL
><LI
><P
><TT
CLASS="FUNCTION"
>loc/unl_cpu()</TT
>
: these must only be called in a
µITRON task context, else E_CTX.</P
></LI
><LI
><P
><TT
CLASS="FUNCTION"
>dis/ena_int()</TT
>
: the interrupt number must be in range as specified by the platform
HAL in qustion, else E_PAR.</P
></LI
></UL
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