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<div id="projectname">MCUXpresso SDK API Reference Manual
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 <span id="projectnumber">Rev 2.11.0</span>
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<a href="#files">Files</a> |
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<a href="#nested-classes">Data Structures</a> |
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<a href="#enum-members">Enumerations</a> </div>
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<div class="headertitle">
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<div class="title">WWDT: Windowed Watchdog Timer Driver</div> </div>
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</div><!--header-->
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<div class="contents">
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<a name="details" id="details"></a><h2 class="groupheader">Overview</h2>
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<p>The MCUXpresso SDK provides a peripheral driver for the Watchdog module (WDOG) of MCUXpresso SDK devices.</p>
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<h1><a class="anchor" id="WWDTFunc"></a>
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Function groups</h1>
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<h2><a class="anchor" id="WWDTInit"></a>
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Initialization and deinitialization</h2>
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<p>The function <a class="el" href="a00025.html#gadc47d88ae20552f9cd9999e6f8fc5ebe" title="Initializes the WWDT. ">WWDT_Init()</a> initializes the watchdog timer with specified configurations. The configurations include timeout value and whether to enable watchdog after init. The function <a class="el" href="a00025.html#gacfd7070829029279f3b3bfb763b86914" title="Initializes WWDT configure structure. ">WWDT_GetDefaultConfig()</a> gets the default configurations.</p>
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<p>The function <a class="el" href="a00025.html#gaae4415d32cd0f67908d0ab9494736742" title="Shuts down the WWDT. ">WWDT_Deinit()</a> disables the watchdog and the module clock.</p>
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<h2><a class="anchor" id="WWDTStatus"></a>
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Status</h2>
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<p>Provides functions to get and clear the WWDT status.</p>
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<h2><a class="anchor" id="WWDTInterrupt"></a>
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Interrupt</h2>
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<p>Provides functions to enable/disable WWDT interrupts and get current enabled interrupts.</p>
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<h2><a class="anchor" id="WWDTRefresh"></a>
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Watch dog Refresh</h2>
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<p>The function <a class="el" href="a00025.html#gab1745efaa7c33fab66a552fd45e01d83" title="Refreshes the WWDT timer. ">WWDT_Refresh()</a> feeds the WWDT.</p>
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<h1><a class="anchor" id="WWDTTypUC"></a>
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Typical use case</h1>
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<p>Refer to the driver examples codes located at <SDK_ROOT>/boards/<BOARD>/driver_examples/wwdt </p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="files"></a>
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Files</h2></td></tr>
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<tr class="memitem:a00081"><td class="memItemLeft" align="right" valign="top">file  </td><td class="memItemRight" valign="bottom"><a class="el" href="a00081.html">fsl_wwdt.h</a></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
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Data Structures</h2></td></tr>
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<tr class="memitem:a00140"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#a00140">wwdt_config_t</a></td></tr>
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<tr class="memdesc:a00140"><td class="mdescLeft"> </td><td class="mdescRight">Describes WWDT configuration structure. <a href="a00025.html#a00140">More...</a><br/></td></tr>
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<tr class="separator:a00140"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="enum-members"></a>
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Enumerations</h2></td></tr>
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<tr class="memitem:gaca0e9724bd1f25336527ea66c77e476f"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#gaca0e9724bd1f25336527ea66c77e476f">_wwdt_status_flags_t</a> { <br/>
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  <a class="el" href="a00025.html#ggaca0e9724bd1f25336527ea66c77e476faea9db9afc1f9c70872a755eaa24a4184">kWWDT_TimeoutFlag</a> = WWDT_MOD_WDTOF_MASK,
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<br/>
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  <a class="el" href="a00025.html#ggaca0e9724bd1f25336527ea66c77e476fa825be03d771f06e1d6cf947ca78f857e">kWWDT_WarningFlag</a> = WWDT_MOD_WDINT_MASK
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<br/>
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}</td></tr>
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<tr class="memdesc:gaca0e9724bd1f25336527ea66c77e476f"><td class="mdescLeft"> </td><td class="mdescRight">WWDT status flags. <a href="a00025.html#gaca0e9724bd1f25336527ea66c77e476f">More...</a><br/></td></tr>
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<tr class="separator:gaca0e9724bd1f25336527ea66c77e476f"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
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Driver version</h2></td></tr>
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<tr class="memitem:gaf661d1e3e19a80b873c54fdbad5e966a"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#gaf661d1e3e19a80b873c54fdbad5e966a">FSL_WWDT_DRIVER_VERSION</a>   (<a class="el" href="a00087.html#ga812138aa3315b0c6953c1a26130bcc37">MAKE_VERSION</a>(2, 1, 9))</td></tr>
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<tr class="memdesc:gaf661d1e3e19a80b873c54fdbad5e966a"><td class="mdescLeft"> </td><td class="mdescRight">Defines WWDT driver version. <a href="#gaf661d1e3e19a80b873c54fdbad5e966a">More...</a><br/></td></tr>
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<tr class="separator:gaf661d1e3e19a80b873c54fdbad5e966a"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
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Refresh sequence</h2></td></tr>
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<tr class="memitem:ga56228a5472034e453003e7f375c824ab"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ga56228a5472034e453003e7f375c824ab"></a>
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#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#ga56228a5472034e453003e7f375c824ab">WWDT_FIRST_WORD_OF_REFRESH</a>   (0xAAU)</td></tr>
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<tr class="memdesc:ga56228a5472034e453003e7f375c824ab"><td class="mdescLeft"> </td><td class="mdescRight">First word of refresh sequence. <br/></td></tr>
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<tr class="separator:ga56228a5472034e453003e7f375c824ab"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gab483f5384985a23bb28889b3c31da9ee"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="gab483f5384985a23bb28889b3c31da9ee"></a>
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#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#gab483f5384985a23bb28889b3c31da9ee">WWDT_SECOND_WORD_OF_REFRESH</a>   (0x55U)</td></tr>
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<tr class="memdesc:gab483f5384985a23bb28889b3c31da9ee"><td class="mdescLeft"> </td><td class="mdescRight">Second word of refresh sequence. <br/></td></tr>
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<tr class="separator:gab483f5384985a23bb28889b3c31da9ee"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
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WWDT Initialization and De-initialization</h2></td></tr>
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<tr class="memitem:gacfd7070829029279f3b3bfb763b86914"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#gacfd7070829029279f3b3bfb763b86914">WWDT_GetDefaultConfig</a> (<a class="el" href="a00025.html#a00140">wwdt_config_t</a> *config)</td></tr>
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<tr class="memdesc:gacfd7070829029279f3b3bfb763b86914"><td class="mdescLeft"> </td><td class="mdescRight">Initializes WWDT configure structure. <a href="#gacfd7070829029279f3b3bfb763b86914">More...</a><br/></td></tr>
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<tr class="separator:gacfd7070829029279f3b3bfb763b86914"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gadc47d88ae20552f9cd9999e6f8fc5ebe"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#gadc47d88ae20552f9cd9999e6f8fc5ebe">WWDT_Init</a> (WWDT_Type *base, const <a class="el" href="a00025.html#a00140">wwdt_config_t</a> *config)</td></tr>
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<tr class="memdesc:gadc47d88ae20552f9cd9999e6f8fc5ebe"><td class="mdescLeft"> </td><td class="mdescRight">Initializes the WWDT. <a href="#gadc47d88ae20552f9cd9999e6f8fc5ebe">More...</a><br/></td></tr>
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<tr class="separator:gadc47d88ae20552f9cd9999e6f8fc5ebe"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaae4415d32cd0f67908d0ab9494736742"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#gaae4415d32cd0f67908d0ab9494736742">WWDT_Deinit</a> (WWDT_Type *base)</td></tr>
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<tr class="memdesc:gaae4415d32cd0f67908d0ab9494736742"><td class="mdescLeft"> </td><td class="mdescRight">Shuts down the WWDT. <a href="#gaae4415d32cd0f67908d0ab9494736742">More...</a><br/></td></tr>
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<tr class="separator:gaae4415d32cd0f67908d0ab9494736742"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
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WWDT Functional Operation</h2></td></tr>
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<tr class="memitem:ga2620dd2baf891f32359fbe85faaca563"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#ga2620dd2baf891f32359fbe85faaca563">WWDT_Enable</a> (WWDT_Type *base)</td></tr>
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<tr class="memdesc:ga2620dd2baf891f32359fbe85faaca563"><td class="mdescLeft"> </td><td class="mdescRight">Enables the WWDT module. <a href="#ga2620dd2baf891f32359fbe85faaca563">More...</a><br/></td></tr>
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<tr class="separator:ga2620dd2baf891f32359fbe85faaca563"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga358bab6648d05345bda057a72cfb5547"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#ga358bab6648d05345bda057a72cfb5547">WWDT_Disable</a> (WWDT_Type *base)</td></tr>
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<tr class="memdesc:ga358bab6648d05345bda057a72cfb5547"><td class="mdescLeft"> </td><td class="mdescRight">Disables the WWDT module. <a href="#ga358bab6648d05345bda057a72cfb5547">More...</a><br/></td></tr>
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<tr class="separator:ga358bab6648d05345bda057a72cfb5547"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga1c5dae412d14eba38f2b63abb9f982d6"><td class="memItemLeft" align="right" valign="top">static uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#ga1c5dae412d14eba38f2b63abb9f982d6">WWDT_GetStatusFlags</a> (WWDT_Type *base)</td></tr>
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<tr class="memdesc:ga1c5dae412d14eba38f2b63abb9f982d6"><td class="mdescLeft"> </td><td class="mdescRight">Gets all WWDT status flags. <a href="#ga1c5dae412d14eba38f2b63abb9f982d6">More...</a><br/></td></tr>
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<tr class="separator:ga1c5dae412d14eba38f2b63abb9f982d6"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga5666008b33bf327c80afb90e0733512e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#ga5666008b33bf327c80afb90e0733512e">WWDT_ClearStatusFlags</a> (WWDT_Type *base, uint32_t mask)</td></tr>
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<tr class="memdesc:ga5666008b33bf327c80afb90e0733512e"><td class="mdescLeft"> </td><td class="mdescRight">Clear WWDT flag. <a href="#ga5666008b33bf327c80afb90e0733512e">More...</a><br/></td></tr>
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<tr class="separator:ga5666008b33bf327c80afb90e0733512e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gac575fb8568458aa8acbbed14d5aa5ffd"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#gac575fb8568458aa8acbbed14d5aa5ffd">WWDT_SetWarningValue</a> (WWDT_Type *base, uint32_t warningValue)</td></tr>
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<tr class="memdesc:gac575fb8568458aa8acbbed14d5aa5ffd"><td class="mdescLeft"> </td><td class="mdescRight">Set the WWDT warning value. <a href="#gac575fb8568458aa8acbbed14d5aa5ffd">More...</a><br/></td></tr>
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<tr class="separator:gac575fb8568458aa8acbbed14d5aa5ffd"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gad2351329bb1ff6b966decec266d7ec16"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#gad2351329bb1ff6b966decec266d7ec16">WWDT_SetTimeoutValue</a> (WWDT_Type *base, uint32_t timeoutCount)</td></tr>
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<tr class="memdesc:gad2351329bb1ff6b966decec266d7ec16"><td class="mdescLeft"> </td><td class="mdescRight">Set the WWDT timeout value. <a href="#gad2351329bb1ff6b966decec266d7ec16">More...</a><br/></td></tr>
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<tr class="separator:gad2351329bb1ff6b966decec266d7ec16"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga66b5c37906be6083f083a436eebbe778"><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#ga66b5c37906be6083f083a436eebbe778">WWDT_SetWindowValue</a> (WWDT_Type *base, uint32_t windowValue)</td></tr>
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<tr class="memdesc:ga66b5c37906be6083f083a436eebbe778"><td class="mdescLeft"> </td><td class="mdescRight">Sets the WWDT window value. <a href="#ga66b5c37906be6083f083a436eebbe778">More...</a><br/></td></tr>
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<tr class="separator:ga66b5c37906be6083f083a436eebbe778"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gab1745efaa7c33fab66a552fd45e01d83"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#gab1745efaa7c33fab66a552fd45e01d83">WWDT_Refresh</a> (WWDT_Type *base)</td></tr>
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<tr class="memdesc:gab1745efaa7c33fab66a552fd45e01d83"><td class="mdescLeft"> </td><td class="mdescRight">Refreshes the WWDT timer. <a href="#gab1745efaa7c33fab66a552fd45e01d83">More...</a><br/></td></tr>
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<hr/><h2 class="groupheader">Data Structure Documentation</h2>
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<a name="a00140" id="a00140"></a>
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<td class="memname">struct wwdt_config_t</td>
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</div><div class="memdoc">
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<div class="textblock"></div><table class="memberdecls">
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<tr><td colspan="2"><h3>Data Fields</h3></td></tr>
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<tr class="memitem:a405b63e15703dc92b3179b5089319e38"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a405b63e15703dc92b3179b5089319e38"></a>
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bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#a405b63e15703dc92b3179b5089319e38">enableWwdt</a></td></tr>
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<tr class="memdesc:a405b63e15703dc92b3179b5089319e38"><td class="mdescLeft"> </td><td class="mdescRight">Enables or disables WWDT. <br/></td></tr>
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<tr class="memitem:a78ce1ec4de049becaae7e3be51772313"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a78ce1ec4de049becaae7e3be51772313"></a>
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bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#a78ce1ec4de049becaae7e3be51772313">enableWatchdogReset</a></td></tr>
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<tr class="memdesc:a78ce1ec4de049becaae7e3be51772313"><td class="mdescLeft"> </td><td class="mdescRight">true: Watchdog timeout will cause a chip reset false: Watchdog timeout will not cause a chip reset <br/></td></tr>
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<tr class="memitem:adc32c01dcffb7f140c8e1fd049862928"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="adc32c01dcffb7f140c8e1fd049862928"></a>
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bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#adc32c01dcffb7f140c8e1fd049862928">enableWatchdogProtect</a></td></tr>
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<tr class="memdesc:adc32c01dcffb7f140c8e1fd049862928"><td class="mdescLeft"> </td><td class="mdescRight">true: Enable watchdog protect i.e timeout value can only be changed after counter is below warning & window values false: Disable watchdog protect; timeout value can be changed at any time <br/></td></tr>
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<tr class="memitem:ac0e6a4a8be4bd468fdb082a156219a44"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ac0e6a4a8be4bd468fdb082a156219a44"></a>
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bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#ac0e6a4a8be4bd468fdb082a156219a44">enableLockOscillator</a></td></tr>
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<tr class="memdesc:ac0e6a4a8be4bd468fdb082a156219a44"><td class="mdescLeft"> </td><td class="mdescRight">true: Disabling or powering down the watchdog oscillator is prevented Once set, this bit can only be cleared by a reset false: Do not lock oscillator <br/></td></tr>
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<tr class="memitem:a6ec33e8656fe2cfc997634b348ca2cfa"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a6ec33e8656fe2cfc997634b348ca2cfa"></a>
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uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#a6ec33e8656fe2cfc997634b348ca2cfa">windowValue</a></td></tr>
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<tr class="memdesc:a6ec33e8656fe2cfc997634b348ca2cfa"><td class="mdescLeft"> </td><td class="mdescRight">Window value, set this to 0xFFFFFF if windowing is not in effect. <br/></td></tr>
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<tr class="memitem:a9ada6867151ee688d47176cbe771cf2d"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a9ada6867151ee688d47176cbe771cf2d"></a>
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uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#a9ada6867151ee688d47176cbe771cf2d">timeoutValue</a></td></tr>
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<tr class="memdesc:a9ada6867151ee688d47176cbe771cf2d"><td class="mdescLeft"> </td><td class="mdescRight">Timeout value. <br/></td></tr>
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<tr class="memitem:a449186b990027ae1e7543458e2f8714a"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#a449186b990027ae1e7543458e2f8714a">warningValue</a></td></tr>
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<tr class="memdesc:a449186b990027ae1e7543458e2f8714a"><td class="mdescLeft"> </td><td class="mdescRight">Watchdog time counter value that will generate a warning interrupt. <a href="#a449186b990027ae1e7543458e2f8714a">More...</a><br/></td></tr>
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<tr class="memitem:a15e2f3ecd343280edfd8fbaa0bf8c9f4"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="a00025.html#a15e2f3ecd343280edfd8fbaa0bf8c9f4">clockFreq_Hz</a></td></tr>
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<tr class="memdesc:a15e2f3ecd343280edfd8fbaa0bf8c9f4"><td class="mdescLeft"> </td><td class="mdescRight">Watchdog clock source frequency. <a href="#a15e2f3ecd343280edfd8fbaa0bf8c9f4">More...</a><br/></td></tr>
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<h4 class="groupheader">Field Documentation</h4>
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<td class="memname">uint32_t wwdt_config_t::warningValue</td>
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<p>Set this to 0 for no warning </p>
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<td class="memname">uint32_t wwdt_config_t::clockFreq_Hz</td>
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<h2 class="groupheader">Macro Definition Documentation</h2>
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<td class="memname">#define FSL_WWDT_DRIVER_VERSION   (<a class="el" href="a00087.html#ga812138aa3315b0c6953c1a26130bcc37">MAKE_VERSION</a>(2, 1, 9))</td>
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<h2 class="groupheader">Enumeration Type Documentation</h2>
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<td class="memname">enum <a class="el" href="a00025.html#gaca0e9724bd1f25336527ea66c77e476f">_wwdt_status_flags_t</a></td>
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</div><div class="memdoc">
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<p>This structure contains the WWDT status flags for use in the WWDT functions. </p>
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<table class="fieldtable">
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="ggaca0e9724bd1f25336527ea66c77e476faea9db9afc1f9c70872a755eaa24a4184"></a>kWWDT_TimeoutFlag</em> </td><td class="fielddoc">
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<p>Time-out flag, set when the timer times out. </p>
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</td></tr>
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<tr><td class="fieldname"><em><a class="anchor" id="ggaca0e9724bd1f25336527ea66c77e476fa825be03d771f06e1d6cf947ca78f857e"></a>kWWDT_WarningFlag</em> </td><td class="fielddoc">
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<p>Warning interrupt flag, set when timer is below the value WDWARNINT. </p>
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<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">void WWDT_GetDefaultConfig </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="a00025.html#a00140">wwdt_config_t</a> * </td>
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<td class="paramname"><em>config</em></td><td>)</td>
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<p>This function initializes the WWDT configure structure to default value. The default value are: </p>
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<div class="fragment"><div class="line">* config->enableWwdt = <span class="keyword">true</span>;</div>
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<div class="line">* config->enableWatchdogReset = <span class="keyword">false</span>;</div>
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<div class="line">* config->enableWatchdogProtect = <span class="keyword">false</span>;</div>
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<div class="line">* config->enableLockOscillator = <span class="keyword">false</span>;</div>
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<div class="line">* config->windowValue = 0xFFFFFFU;</div>
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<div class="line">* config->timeoutValue = 0xFFFFFFU;</div>
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<div class="line">* config->warningValue = 0;</div>
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<div class="line">* </div>
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</div><!-- fragment --><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">config</td><td>Pointer to WWDT config structure. </td></tr>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="a00025.html#a00140" title="Describes WWDT configuration structure. ">wwdt_config_t</a> </dd></dl>
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<td class="memname">void WWDT_Init </td>
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<td>(</td>
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<td class="paramtype">WWDT_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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<td class="paramtype">const <a class="el" href="a00025.html#a00140">wwdt_config_t</a> * </td>
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<td class="paramname"><em>config</em> </td>
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<p>This function initializes the WWDT. When called, the WWDT runs according to the configuration.</p>
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<p>Example: </p>
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<div class="fragment"><div class="line">* <a class="code" href="a00025.html#a00140">wwdt_config_t</a> config;</div>
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<div class="line">* <a class="code" href="a00025.html#gacfd7070829029279f3b3bfb763b86914">WWDT_GetDefaultConfig</a>(&config);</div>
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<div class="line">* config.<a class="code" href="a00025.html#a9ada6867151ee688d47176cbe771cf2d">timeoutValue</a> = 0x7ffU;</div>
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<div class="line">* <a class="code" href="a00025.html#gadc47d88ae20552f9cd9999e6f8fc5ebe">WWDT_Init</a>(wwdt_base,&config);</div>
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<div class="line">* </div>
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</div><!-- fragment --><dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">base</td><td>WWDT peripheral base address </td></tr>
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<tr><td class="paramname">config</td><td>The configuration of WWDT </td></tr>
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<td class="memname">void WWDT_Deinit </td>
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<td>(</td>
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<td class="paramtype">WWDT_Type * </td>
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<p>This function shuts down the WWDT.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">base</td><td>WWDT peripheral base address </td></tr>
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<td class="memname">static void WWDT_Enable </td>
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<td>(</td>
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<p>This function write value into WWDT_MOD register to enable the WWDT, it is a write-once bit; once this bit is set to one and a watchdog feed is performed, the watchdog timer will run permanently.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>WWDT peripheral base address </td></tr>
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<td class="memname">static void WWDT_Disable </td>
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<td>(</td>
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<dl class="deprecated"><dt><b><a class="el" href="a00099.html#_deprecated000006">Deprecated:</a></b></dt><dd>Do not use this function. It will be deleted in next release version, for once the bit field of WDEN written with a 1, it can not be re-written with a 0.</dd></dl>
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<p>This function write value into WWDT_MOD register to disable the WWDT.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">base</td><td>WWDT peripheral base address </td></tr>
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<td class="memname">static uint32_t WWDT_GetStatusFlags </td>
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<td>(</td>
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<p>This function gets all status flags.</p>
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<p>Example for getting Timeout Flag: </p>
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<div class="fragment"><div class="line">* uint32_t status;</div>
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<div class="line">* status = <a class="code" href="a00025.html#ga1c5dae412d14eba38f2b63abb9f982d6">WWDT_GetStatusFlags</a>(wwdt_base) & <a class="code" href="a00025.html#ggaca0e9724bd1f25336527ea66c77e476faea9db9afc1f9c70872a755eaa24a4184">kWWDT_TimeoutFlag</a>;</div>
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<div class="line">* </div>
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</div><!-- fragment --> <dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">base</td><td>WWDT peripheral base address </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>The status flags. This is the logical OR of members of the enumeration <a class="el" href="a00025.html#gaca0e9724bd1f25336527ea66c77e476f" title="WWDT status flags. ">_wwdt_status_flags_t</a> </dd></dl>
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<td class="memname">void WWDT_ClearStatusFlags </td>
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<td>(</td>
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<td class="paramtype">WWDT_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>mask</em> </td>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</div><div class="memdoc">
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<p>This function clears WWDT status flag.</p>
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<p>Example for clearing warning flag: </p>
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<div class="fragment"><div class="line">* <a class="code" href="a00025.html#ga5666008b33bf327c80afb90e0733512e">WWDT_ClearStatusFlags</a>(wwdt_base, <a class="code" href="a00025.html#ggaca0e9724bd1f25336527ea66c77e476fa825be03d771f06e1d6cf947ca78f857e">kWWDT_WarningFlag</a>);</div>
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<div class="line">* </div>
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</div><!-- fragment --> <dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>WWDT peripheral base address </td></tr>
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<tr><td class="paramname">mask</td><td>The status flags to clear. This is a logical OR of members of the enumeration <a class="el" href="a00025.html#gaca0e9724bd1f25336527ea66c77e476f" title="WWDT status flags. ">_wwdt_status_flags_t</a> </td></tr>
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<td class="memname">static void WWDT_SetWarningValue </td>
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<td>(</td>
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<td class="paramtype">WWDT_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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</tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>warningValue</em> </td>
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<td>)</td>
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
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</div><div class="memdoc">
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<p>The WDWARNINT register determines the watchdog timer counter value that will generate a watchdog interrupt. When the watchdog timer counter is no longer greater than the value defined by WARNINT, an interrupt will be generated after the subsequent WDCLK.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>WWDT peripheral base address </td></tr>
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<tr><td class="paramname">warningValue</td><td>WWDT warning value. </td></tr>
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<td class="memname">static void WWDT_SetTimeoutValue </td>
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<td>(</td>
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<td class="paramtype">WWDT_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>timeoutCount</em> </td>
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<td>)</td>
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<span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">static</span></span> </td>
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<p>This function sets the timeout value. Every time a feed sequence occurs the value in the TC register is loaded into the Watchdog timer. Writing a value below 0xFF will cause 0xFF to be loaded into the TC register. Thus the minimum time-out interval is TWDCLK*256*4. If enableWatchdogProtect flag is true in <a class="el" href="a00025.html#a00140" title="Describes WWDT configuration structure. ">wwdt_config_t</a> config structure, any attempt to change the timeout value before the watchdog counter is below the warning and window values will cause a watchdog reset and set the WDTOF flag.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>WWDT peripheral base address </td></tr>
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<tr><td class="paramname">timeoutCount</td><td>WWDT timeout value, count of WWDT clock tick. </td></tr>
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<td class="memname">static void WWDT_SetWindowValue </td>
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<td>(</td>
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<td class="paramtype">WWDT_Type * </td>
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<td class="paramname"><em>base</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>windowValue</em> </td>
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<td>)</td>
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<p>The WINDOW register determines the highest TV value allowed when a watchdog feed is performed. If a feed sequence occurs when timer value is greater than the value in WINDOW, a watchdog event will occur. To disable windowing, set windowValue to 0xFFFFFF (maximum possible timer value) so windowing is not in effect.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>WWDT peripheral base address </td></tr>
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<tr><td class="paramname">windowValue</td><td>WWDT window value. </td></tr>
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</table>
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</dd>
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</dl>
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<td class="memname">void WWDT_Refresh </td>
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<td>(</td>
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<td class="paramtype">WWDT_Type * </td>
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<td class="paramname"><em>base</em></td><td>)</td>
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<td></td>
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</div><div class="memdoc">
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<p>This function feeds the WWDT. This function should be called before WWDT timer is in timeout. Otherwise, a reset is asserted.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">base</td><td>WWDT peripheral base address </td></tr>
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</table>
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</dd>
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</dl>
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</div>
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</div>
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