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<a href="#func-members">Functions</a> </div>
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<div class="title">Interrupts and flags management functions<div class="ingroups"><a class="el" href="group___s_t_m32_f4xx___std_periph___driver.html">STM32F4xx_StdPeriph_Driver</a> » <a class="el" href="group___c_r_y_p.html">CRYP</a> » <a class="el" href="group___c_r_y_p___private___functions.html">CRYP_Private_Functions</a></div></div> </div>
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</div><!--header-->
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<div class="contents">
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<p>Interrupts and flags management functions.
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<a href="#details">More...</a></p>
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<div class="dynheader">
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Collaboration diagram for Interrupts and flags management functions:</div>
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<div class="dyncontent">
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<center><table><tr><td><img src="group___c_r_y_p___group5.png" border="0" alt="" usemap="#group______c__r__y__p______group5"/>
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<map name="group______c__r__y__p______group5" id="group______c__r__y__p______group5">
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<area shape="rect" id="node2" href="group___c_r_y_p___private___functions.html" title="CRYP_Private_Functions" alt="" coords="5,13,173,39"/></map>
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</td></tr></table></center>
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</div>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:gafbf5ee5f2c3ae4404149a994e15b33d8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_r_y_p___group5.html#gafbf5ee5f2c3ae4404149a994e15b33d8">CRYP_ITConfig</a> (uint8_t CRYP_IT, FunctionalState NewState)</td></tr>
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<tr class="memdesc:gafbf5ee5f2c3ae4404149a994e15b33d8"><td class="mdescLeft"> </td><td class="mdescRight">Enables or disables the specified CRYP interrupts. <a href="#gafbf5ee5f2c3ae4404149a994e15b33d8">More...</a><br /></td></tr>
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<tr class="separator:gafbf5ee5f2c3ae4404149a994e15b33d8"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga00a48b748ed127fa517cacec9dbf18f4"><td class="memItemLeft" align="right" valign="top">ITStatus </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_r_y_p___group5.html#ga00a48b748ed127fa517cacec9dbf18f4">CRYP_GetITStatus</a> (uint8_t CRYP_IT)</td></tr>
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<tr class="memdesc:ga00a48b748ed127fa517cacec9dbf18f4"><td class="mdescLeft"> </td><td class="mdescRight">Checks whether the specified CRYP interrupt has occurred or not. <a href="#ga00a48b748ed127fa517cacec9dbf18f4">More...</a><br /></td></tr>
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<tr class="separator:ga00a48b748ed127fa517cacec9dbf18f4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gabe26186adf64660a4a573bd6a4368fee"><td class="memItemLeft" align="right" valign="top">FunctionalState </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_r_y_p___group5.html#gabe26186adf64660a4a573bd6a4368fee">CRYP_GetCmdStatus</a> (void)</td></tr>
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<tr class="memdesc:gabe26186adf64660a4a573bd6a4368fee"><td class="mdescLeft"> </td><td class="mdescRight">Returns whether CRYP peripheral is enabled or disabled. <a href="#gabe26186adf64660a4a573bd6a4368fee">More...</a><br /></td></tr>
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<tr class="separator:gabe26186adf64660a4a573bd6a4368fee"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga993d568b626a74b2973d4a6848a681f6"><td class="memItemLeft" align="right" valign="top">FlagStatus </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_r_y_p___group5.html#ga993d568b626a74b2973d4a6848a681f6">CRYP_GetFlagStatus</a> (uint8_t CRYP_FLAG)</td></tr>
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<tr class="memdesc:ga993d568b626a74b2973d4a6848a681f6"><td class="mdescLeft"> </td><td class="mdescRight">Checks whether the specified CRYP flag is set or not. <a href="#ga993d568b626a74b2973d4a6848a681f6">More...</a><br /></td></tr>
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<tr class="separator:ga993d568b626a74b2973d4a6848a681f6"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<p>Interrupts and flags management functions. </p>
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<pre class="fragment"> ===============================================================================
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##### Interrupts and flags management functions #####
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===============================================================================
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[..] This section provides functions allowing to configure the CRYP Interrupts and
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to get the status and Interrupts pending bits.
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[..] The CRYP provides 2 Interrupts sources and 7 Flags:
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*** Flags : ***
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===============
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[..]
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(#) CRYP_FLAG_IFEM : Set when Input FIFO is empty. This Flag is cleared only
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by hardware.
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(#) CRYP_FLAG_IFNF : Set when Input FIFO is not full. This Flag is cleared
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only by hardware.
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(#) CRYP_FLAG_INRIS : Set when Input FIFO Raw interrupt is pending it gives
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the raw interrupt state prior to masking of the input FIFO service interrupt.
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This Flag is cleared only by hardware.
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(#) CRYP_FLAG_OFNE : Set when Output FIFO not empty. This Flag is cleared
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only by hardware.
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(#) CRYP_FLAG_OFFU : Set when Output FIFO is full. This Flag is cleared only
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by hardware.
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(#) CRYP_FLAG_OUTRIS : Set when Output FIFO Raw interrupt is pending it gives
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the raw interrupt state prior to masking of the output FIFO service interrupt.
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This Flag is cleared only by hardware.
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(#) CRYP_FLAG_BUSY : Set when the CRYP core is currently processing a block
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of data or a key preparation (for AES decryption). This Flag is cleared
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only by hardware. To clear it, the CRYP core must be disabled and the last
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processing has completed.
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*** Interrupts : ***
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====================
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[..]
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(#) CRYP_IT_INI : The input FIFO service interrupt is asserted when there
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are less than 4 words in the input FIFO. This interrupt is associated to
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CRYP_FLAG_INRIS flag.
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-@- This interrupt is cleared by performing write operations to the input FIFO
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until it holds 4 or more words. The input FIFO service interrupt INMIS is
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enabled with the CRYP enable bit. Consequently, when CRYP is disabled, the
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INMIS signal is low even if the input FIFO is empty.
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(#) CRYP_IT_OUTI : The output FIFO service interrupt is asserted when there
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is one or more (32-bit word) data items in the output FIFO. This interrupt
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is associated to CRYP_FLAG_OUTRIS flag.
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-@- This interrupt is cleared by reading data from the output FIFO until there
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is no valid (32-bit) word left (that is, the interrupt follows the state
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of the OFNE (output FIFO not empty) flag).
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*** Managing the CRYP controller events : ***
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=============================================
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[..] The user should identify which mode will be used in his application to manage
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the CRYP controller events: Polling mode or Interrupt mode.
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(#) In the Polling Mode it is advised to use the following functions:
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(++) CRYP_GetFlagStatus() : to check if flags events occur.
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-@@- The CRYPT flags do not need to be cleared since they are cleared as
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soon as the associated event are reset.
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(#) In the Interrupt Mode it is advised to use the following functions:
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(++) CRYP_ITConfig() : to enable or disable the interrupt source.
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(++) CRYP_GetITStatus() : to check if Interrupt occurs.
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-@@- The CRYPT interrupts have no pending bits, the interrupt is cleared as
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soon as the associated event is reset. </pre> <h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="gabe26186adf64660a4a573bd6a4368fee"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">FunctionalState CRYP_GetCmdStatus </td>
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<td>(</td>
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<td class="paramtype">void </td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Returns whether CRYP peripheral is enabled or disabled. </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">none.</td><td></td></tr>
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</table>
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</dd>
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</dl>
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<dl class="retval"><dt>Return values</dt><dd>
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<table class="retval">
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<tr><td class="paramname">Current</td><td>state of the CRYP peripheral (ENABLE or DISABLE). </td></tr>
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</table>
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</dd>
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</dl>
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<p><div class="dynheader">
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Here is the caller graph for this function:</div>
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<div class="center"><img src="group___c_r_y_p___group5_gabe26186adf64660a4a573bd6a4368fee_icgraph.png" border="0" usemap="#group___c_r_y_p___group5_gabe26186adf64660a4a573bd6a4368fee_icgraph" alt=""/></div>
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</div>
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</p>
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</div>
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</div>
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<a class="anchor" id="ga993d568b626a74b2973d4a6848a681f6"></a>
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<div class="memitem">
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<div class="memproto">
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<tr>
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<td class="memname">FlagStatus CRYP_GetFlagStatus </td>
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<td>(</td>
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<td class="paramtype">uint8_t </td>
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<td class="paramname"><em>CRYP_FLAG</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Checks whether the specified CRYP flag is set or not. </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">CRYP_FLAG</td><td>specifies the CRYP flag to check. This parameter can be one of the following values: <ul>
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<li>CRYP_FLAG_IFEM: Input FIFO Empty flag. </li>
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<li>CRYP_FLAG_IFNF: Input FIFO Not Full flag. </li>
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<li>CRYP_FLAG_OFNE: Output FIFO Not Empty flag. </li>
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<li>CRYP_FLAG_OFFU: Output FIFO Full flag. </li>
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<li>CRYP_FLAG_BUSY: Busy flag. </li>
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<li>CRYP_FLAG_OUTRIS: Output FIFO raw interrupt flag. </li>
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<li>CRYP_FLAG_INRIS: Input FIFO raw interrupt flag. </li>
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</ul>
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</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="retval"><dt>Return values</dt><dd>
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<table class="retval">
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<tr><td class="paramname">The</td><td>new state of CRYP_FLAG (SET or RESET). </td></tr>
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</table>
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</dd>
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</dl>
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<p><div class="dynheader">
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</p>
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</div>
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</div>
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<a class="anchor" id="ga00a48b748ed127fa517cacec9dbf18f4"></a>
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<td class="memname">ITStatus CRYP_GetITStatus </td>
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<td>(</td>
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<td class="paramtype">uint8_t </td>
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<td class="paramname"><em>CRYP_IT</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Checks whether the specified CRYP interrupt has occurred or not. </p>
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<dl class="section note"><dt>Note</dt><dd>This function checks the status of the masked interrupt (i.e the interrupt should be previously enabled). </dd></dl>
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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">CRYP_IT</td><td>specifies the CRYP (masked) interrupt source to check. This parameter can be one of the following values: <ul>
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<li>CRYP_IT_INI: Input FIFO interrupt </li>
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<li>CRYP_IT_OUTI: Output FIFO interrupt </li>
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</ul>
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</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="retval"><dt>Return values</dt><dd>
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<table class="retval">
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<tr><td class="paramname">The</td><td>new state of CRYP_IT (SET or RESET). </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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<a class="anchor" id="gafbf5ee5f2c3ae4404149a994e15b33d8"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void CRYP_ITConfig </td>
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<td>(</td>
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<td class="paramtype">uint8_t </td>
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<td class="paramname"><em>CRYP_IT</em>, </td>
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</tr>
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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">FunctionalState </td>
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<td class="paramname"><em>NewState</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Enables or disables the specified CRYP interrupts. </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">CRYP_IT</td><td>specifies the CRYP interrupt source to be enabled or disabled. This parameter can be any combination of the following values: <ul>
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<li>CRYP_IT_INI: Input FIFO interrupt </li>
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<li>CRYP_IT_OUTI: Output FIFO interrupt </li>
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</ul>
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</td></tr>
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<tr><td class="paramname">NewState</td><td>new state of the specified CRYP interrupt. This parameter can be: ENABLE or DISABLE. </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="retval"><dt>Return values</dt><dd>
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<table class="retval">
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<tr><td class="paramname">None</td><td></td></tr>
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</table>
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</dd>
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</dl>
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