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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
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><TITLE
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>Time Management Functions</TITLE
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TITLE="eCos Reference Manual"
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REL="UP"
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TITLE="µITRON API"
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HREF="compat-uitron-microitron-api.html"><LINK
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REL="PREVIOUS"
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TITLE="   Memory pool Management Functions"
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HREF="compat-uitron-memory-pool-mgmt-functions.html"><LINK
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TITLE="   System Management Functions"
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><TR
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>eCos Reference Manual</TH
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><TR
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><TD
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="compat-uitron-memory-pool-mgmt-functions.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Chapter 32. &micro;ITRON API</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="compat-uitron-system-mgmt-functions.html"
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>Next</A
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="COMPAT-UITRON-TIME-MGMT-FUNCTIONS">Time Management Functions</H1
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><P
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>These functions are fully supported in this release: </P
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>ER <TT
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CLASS="FUNCTION"
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>set_tim</TT
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>(
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    SYSTIME *<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>pk_tim</I
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></SPAN
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> )</PRE
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></TD
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></TR
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></TABLE
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><DIV
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CLASS="CAUTION"
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><P
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></P
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><TABLE
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CLASS="CAUTION"
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><TR
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><TD
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ALIGN="CENTER"
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><B
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>Caution</B
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></TD
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></TR
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><TR
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><TD
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ALIGN="LEFT"
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><P
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>           Setting the time may cause erroneous operation of the
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            kernel, for example a task performing a wait with a
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            time-out may never awaken.</P
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></TD
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></TR
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></TABLE
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></DIV
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>ER <TT
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CLASS="FUNCTION"
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>get_tim</TT
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>(
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    SYSTIME *<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>pk_tim</I
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></SPAN
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> )</PRE
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></TD
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></TR
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></TABLE
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>ER <TT
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CLASS="FUNCTION"
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>dly_tsk</TT
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>(
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    DLYTIME <SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>dlytim</I
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></SPAN
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> )</PRE
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></TD
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></TR
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></TABLE
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><TABLE
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>ER <TT
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CLASS="FUNCTION"
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>def_cyc</TT
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>(
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    HNO <SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>cycno,</I
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></SPAN
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>    T_DCYC *<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>pk_dcyc</I
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></SPAN
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> )</PRE
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></TD
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></TR
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></TABLE
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>ER <TT
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CLASS="FUNCTION"
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>act_cyc</TT
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>(
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    HNO <SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>cycno,</I
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></SPAN
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>    UINT <SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>cycact</I
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></SPAN
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> )</PRE
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></TD
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></TR
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></TABLE
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><TABLE
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>ER <TT
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CLASS="FUNCTION"
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>ref_cyc</TT
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>(
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    T_RCYC *<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>pk_rcyc,</I
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></SPAN
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>    HNO <SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>cycno</I
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></SPAN
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> )</PRE
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></TD
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></TR
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></TABLE
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><TABLE
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>ER <TT
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CLASS="FUNCTION"
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>def_alm</TT
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>(
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    HNO <SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>almno,</I
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></SPAN
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>    T_DALM *<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>pk_dalm</I
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></SPAN
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> )</PRE
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></TD
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></TR
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></TABLE
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>ER <TT
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CLASS="FUNCTION"
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>ref_alm</TT
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>(
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    T_RALM *<SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>pk_ralm,</I
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></SPAN
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>    HNO <SPAN
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CLASS="emphasis"
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><I
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CLASS="EMPHASIS"
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>almno</I
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></SPAN
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> )</PRE
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></TD
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></TR
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></TABLE
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><TABLE
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BORDER="5"
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BGCOLOR="#E0E0F0"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>void <TT
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CLASS="FUNCTION"
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>ret_tmr</TT
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>( void )</PRE
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></TD
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></TR
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></TABLE
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><DIV
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CLASS="SECT2"
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><H2
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CLASS="SECT2"
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><A
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NAME="AEN14010">Error checking</H2
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><P
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>The following conditions are only checked for, and only return
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errors if
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<TT
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CLASS="LITERAL"
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>CYGSEM_UITRON_BAD_PARAMS_RETURN_ERRORS</TT
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>
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is enabled:</P
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><P
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></P
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><UL
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><LI
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><P
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>invalid handler number; less than 1 or greater than
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<TT
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CLASS="LITERAL"
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>CYGNUM_UITRON_CYCLICS/ALARMS</TT
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>
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as appropriate, or E_PAR</P
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></LI
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><LI
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><P
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>dispatching is enabled in
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<TT
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CLASS="FUNCTION"
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>dly_tsk()</TT
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>
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, or E_CTX</P
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></LI
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><LI
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><P
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>dlytim must be positive or zero, otherwise E_PAR</P
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></LI
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><LI
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><P
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>return value pointer in
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<TT
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CLASS="FUNCTION"
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>ref_xxx()</TT
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>
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 is a valid pointer, or E_PAR</P
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></LI
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><LI
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><P
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>params within pk_dalm and pk_dcyc must
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be valid, or E_PAR</P
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></LI
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><LI
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><P
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>cycact in
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<TT
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CLASS="FUNCTION"
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>act_cyc()</TT
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>
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 must be valid, or E_PAR</P
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></LI
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><LI
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><P
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>handler must be defined in
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<TT
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CLASS="FUNCTION"
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>ref_xxx()</TT
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>
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 and
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<TT
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CLASS="FUNCTION"
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>act_cyc()</TT
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>
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, or E_NOEXS</P
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></LI
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><LI
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><P
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>parameter pointer must be a good pointer in
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<TT
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CLASS="FUNCTION"
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>get_tim()</TT
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>
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 and
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<TT
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CLASS="FUNCTION"
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>set_tim()</TT
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>
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, otherwise E_PAR is returned</P
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></LI
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></UL
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><P
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>The following conditions are checked for, and can return
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          error codes, regardless of the setting of
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<TT
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CLASS="LITERAL"
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>CYGSEM_UITRON_BAD_PARAMS_RETURN_ERRORS</TT
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>
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:</P
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><P
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></P
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><UL
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><LI
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><P
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><TT
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CLASS="FUNCTION"
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>dly_tsk()</TT
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>
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: return code E_RLWAI is returned depending on the reason
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for terminating the sleep</P
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></LI
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></UL
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></DIV
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></DIV
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><A
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HREF="compat-uitron-memory-pool-mgmt-functions.html"
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ACCESSKEY="P"
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>Prev</A
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HREF="ecos-ref.html"
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>Home</A
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>Memory pool Management Functions</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="compat-uitron-microitron-api.html"
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>Up</A
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>System Management Functions</TD
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