227 lines
25 KiB
HTML
227 lines
25 KiB
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<a href="#func-members">Functions</a> </div>
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<div class="title">stm32f4xx_dcmi.c File Reference</div> </div>
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<p>This file provides firmware functions to manage the following functionalities of the DCMI peripheral:
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<a href="#details">More...</a></p>
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<div class="textblock"><code>#include "<a class="el" href="stm32f4xx__dcmi_8h_source.html">stm32f4xx_dcmi.h</a>"</code><br />
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<code>#include "<a class="el" href="stm32f4xx__rcc_8h_source.html">stm32f4xx_rcc.h</a>"</code><br />
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Include dependency graph for stm32f4xx_dcmi.c:</div>
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<div class="center"><img src="stm32f4xx__dcmi_8c__incl.png" border="0" usemap="#discovery_2libs_2_stm_core_n_pheriph_2src_2stm32f4xx__dcmi_8c" alt=""/></div>
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</div><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:gab8f501f117d5695017e1dc5a611a5015"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group1.html#gab8f501f117d5695017e1dc5a611a5015">DCMI_DeInit</a> (void)</td></tr>
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<tr class="memdesc:gab8f501f117d5695017e1dc5a611a5015"><td class="mdescLeft"> </td><td class="mdescRight">Deinitializes the DCMI registers to their default reset values. <a href="group___d_c_m_i___group1.html#gab8f501f117d5695017e1dc5a611a5015">More...</a><br /></td></tr>
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<tr class="separator:gab8f501f117d5695017e1dc5a611a5015"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga1299076f1459525053ba4f2fa408ed2a"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group1.html#ga1299076f1459525053ba4f2fa408ed2a">DCMI_Init</a> (<a class="el" href="struct_d_c_m_i___init_type_def.html">DCMI_InitTypeDef</a> *DCMI_InitStruct)</td></tr>
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<tr class="memdesc:ga1299076f1459525053ba4f2fa408ed2a"><td class="mdescLeft"> </td><td class="mdescRight">Initializes the DCMI according to the specified parameters in the DCMI_InitStruct. <a href="group___d_c_m_i___group1.html#ga1299076f1459525053ba4f2fa408ed2a">More...</a><br /></td></tr>
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<tr class="separator:ga1299076f1459525053ba4f2fa408ed2a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga268eb4266fe7f294ee748e86f7b8add2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group1.html#ga268eb4266fe7f294ee748e86f7b8add2">DCMI_StructInit</a> (<a class="el" href="struct_d_c_m_i___init_type_def.html">DCMI_InitTypeDef</a> *DCMI_InitStruct)</td></tr>
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<tr class="memdesc:ga268eb4266fe7f294ee748e86f7b8add2"><td class="mdescLeft"> </td><td class="mdescRight">Fills each DCMI_InitStruct member with its default value. <a href="group___d_c_m_i___group1.html#ga268eb4266fe7f294ee748e86f7b8add2">More...</a><br /></td></tr>
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<tr class="separator:ga268eb4266fe7f294ee748e86f7b8add2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga3bd4eb06314ed06dcb71ee91391b7ec4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group1.html#ga3bd4eb06314ed06dcb71ee91391b7ec4">DCMI_CROPConfig</a> (<a class="el" href="struct_d_c_m_i___c_r_o_p_init_type_def.html">DCMI_CROPInitTypeDef</a> *DCMI_CROPInitStruct)</td></tr>
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<tr class="memdesc:ga3bd4eb06314ed06dcb71ee91391b7ec4"><td class="mdescLeft"> </td><td class="mdescRight">Initializes the DCMI peripheral CROP mode according to the specified parameters in the DCMI_CROPInitStruct. <a href="group___d_c_m_i___group1.html#ga3bd4eb06314ed06dcb71ee91391b7ec4">More...</a><br /></td></tr>
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<tr class="separator:ga3bd4eb06314ed06dcb71ee91391b7ec4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga7139eecdc0f7975b42cd2f9c5644d0a5"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group1.html#ga7139eecdc0f7975b42cd2f9c5644d0a5">DCMI_CROPCmd</a> (FunctionalState NewState)</td></tr>
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<tr class="memdesc:ga7139eecdc0f7975b42cd2f9c5644d0a5"><td class="mdescLeft"> </td><td class="mdescRight">Enables or disables the DCMI Crop feature. <a href="group___d_c_m_i___group1.html#ga7139eecdc0f7975b42cd2f9c5644d0a5">More...</a><br /></td></tr>
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<tr class="separator:ga7139eecdc0f7975b42cd2f9c5644d0a5"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga8888b27bd5aca62d250642468ea6cd6d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group1.html#ga8888b27bd5aca62d250642468ea6cd6d">DCMI_SetEmbeddedSynchroCodes</a> (<a class="el" href="struct_d_c_m_i___codes_init_type_def.html">DCMI_CodesInitTypeDef</a> *DCMI_CodesInitStruct)</td></tr>
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<tr class="memdesc:ga8888b27bd5aca62d250642468ea6cd6d"><td class="mdescLeft"> </td><td class="mdescRight">Sets the embedded synchronization codes. <a href="group___d_c_m_i___group1.html#ga8888b27bd5aca62d250642468ea6cd6d">More...</a><br /></td></tr>
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<tr class="separator:ga8888b27bd5aca62d250642468ea6cd6d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga30a38a4858273c05e8f1b4677d744c13"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group1.html#ga30a38a4858273c05e8f1b4677d744c13">DCMI_JPEGCmd</a> (FunctionalState NewState)</td></tr>
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<tr class="memdesc:ga30a38a4858273c05e8f1b4677d744c13"><td class="mdescLeft"> </td><td class="mdescRight">Enables or disables the DCMI JPEG format. <a href="group___d_c_m_i___group1.html#ga30a38a4858273c05e8f1b4677d744c13">More...</a><br /></td></tr>
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<tr class="separator:ga30a38a4858273c05e8f1b4677d744c13"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga36bba54c40637b8071aea8ffea71fb84"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group2.html#ga36bba54c40637b8071aea8ffea71fb84">DCMI_Cmd</a> (FunctionalState NewState)</td></tr>
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<tr class="memdesc:ga36bba54c40637b8071aea8ffea71fb84"><td class="mdescLeft"> </td><td class="mdescRight">Enables or disables the DCMI interface. <a href="group___d_c_m_i___group2.html#ga36bba54c40637b8071aea8ffea71fb84">More...</a><br /></td></tr>
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<tr class="separator:ga36bba54c40637b8071aea8ffea71fb84"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gad00fb33497ffa337a5b2b77fc6aa8d74"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group2.html#gad00fb33497ffa337a5b2b77fc6aa8d74">DCMI_CaptureCmd</a> (FunctionalState NewState)</td></tr>
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<tr class="memdesc:gad00fb33497ffa337a5b2b77fc6aa8d74"><td class="mdescLeft"> </td><td class="mdescRight">Enables or disables the DCMI Capture. <a href="group___d_c_m_i___group2.html#gad00fb33497ffa337a5b2b77fc6aa8d74">More...</a><br /></td></tr>
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<tr class="separator:gad00fb33497ffa337a5b2b77fc6aa8d74"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga475305bd8694e4cebefcb263c0a5b979"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group2.html#ga475305bd8694e4cebefcb263c0a5b979">DCMI_ReadData</a> (void)</td></tr>
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<tr class="memdesc:ga475305bd8694e4cebefcb263c0a5b979"><td class="mdescLeft"> </td><td class="mdescRight">Reads the data stored in the DR register. <a href="group___d_c_m_i___group2.html#ga475305bd8694e4cebefcb263c0a5b979">More...</a><br /></td></tr>
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<tr class="separator:ga475305bd8694e4cebefcb263c0a5b979"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga3d89fb10384dff1dfd9197fbb6c6b2eb"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group3.html#ga3d89fb10384dff1dfd9197fbb6c6b2eb">DCMI_ITConfig</a> (uint16_t DCMI_IT, FunctionalState NewState)</td></tr>
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<tr class="memdesc:ga3d89fb10384dff1dfd9197fbb6c6b2eb"><td class="mdescLeft"> </td><td class="mdescRight">Enables or disables the DCMI interface interrupts. <a href="group___d_c_m_i___group3.html#ga3d89fb10384dff1dfd9197fbb6c6b2eb">More...</a><br /></td></tr>
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<tr class="separator:ga3d89fb10384dff1dfd9197fbb6c6b2eb"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga1b66e1966fbea902a8e7015c56db7587"><td class="memItemLeft" align="right" valign="top">FlagStatus </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group3.html#ga1b66e1966fbea902a8e7015c56db7587">DCMI_GetFlagStatus</a> (uint16_t DCMI_FLAG)</td></tr>
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<tr class="memdesc:ga1b66e1966fbea902a8e7015c56db7587"><td class="mdescLeft"> </td><td class="mdescRight">Checks whether the DCMI interface flag is set or not. <a href="group___d_c_m_i___group3.html#ga1b66e1966fbea902a8e7015c56db7587">More...</a><br /></td></tr>
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<tr class="separator:ga1b66e1966fbea902a8e7015c56db7587"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga1c93caf3ccfecf07cec8e1e0f844ddaa"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group3.html#ga1c93caf3ccfecf07cec8e1e0f844ddaa">DCMI_ClearFlag</a> (uint16_t DCMI_FLAG)</td></tr>
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<tr class="memdesc:ga1c93caf3ccfecf07cec8e1e0f844ddaa"><td class="mdescLeft"> </td><td class="mdescRight">Clears the DCMI's pending flags. <a href="group___d_c_m_i___group3.html#ga1c93caf3ccfecf07cec8e1e0f844ddaa">More...</a><br /></td></tr>
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<tr class="separator:ga1c93caf3ccfecf07cec8e1e0f844ddaa"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gac0b27821aab3ee6b73ae8a6c6339fed5"><td class="memItemLeft" align="right" valign="top">ITStatus </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group3.html#gac0b27821aab3ee6b73ae8a6c6339fed5">DCMI_GetITStatus</a> (uint16_t DCMI_IT)</td></tr>
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<tr class="memdesc:gac0b27821aab3ee6b73ae8a6c6339fed5"><td class="mdescLeft"> </td><td class="mdescRight">Checks whether the DCMI interrupt has occurred or not. <a href="group___d_c_m_i___group3.html#gac0b27821aab3ee6b73ae8a6c6339fed5">More...</a><br /></td></tr>
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<tr class="separator:gac0b27821aab3ee6b73ae8a6c6339fed5"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga908e6dad7bc5f4f4bbc512f679222c55"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___d_c_m_i___group3.html#ga908e6dad7bc5f4f4bbc512f679222c55">DCMI_ClearITPendingBit</a> (uint16_t DCMI_IT)</td></tr>
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<tr class="memdesc:ga908e6dad7bc5f4f4bbc512f679222c55"><td class="mdescLeft"> </td><td class="mdescRight">Clears the DCMI's interrupt pending bits. <a href="group___d_c_m_i___group3.html#ga908e6dad7bc5f4f4bbc512f679222c55">More...</a><br /></td></tr>
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<tr class="separator:ga908e6dad7bc5f4f4bbc512f679222c55"><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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<div class="textblock"><p>This file provides firmware functions to manage the following functionalities of the DCMI peripheral: </p>
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<dl class="section author"><dt>Author</dt><dd>MCD Application Team </dd></dl>
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<dl class="section version"><dt>Version</dt><dd>V1.4.0 </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>04-August-2014<ul>
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<li>Initialization and Configuration</li>
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<li>Image capture functions</li>
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<li>Interrupts and flags management</li>
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</ul>
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</dd></dl>
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<pre class="fragment">===============================================================================
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##### How to use this driver #####
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===============================================================================
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[..]
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The sequence below describes how to use this driver to capture image
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from a camera module connected to the DCMI Interface.
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This sequence does not take into account the configuration of the
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camera module, which should be made before to configure and enable
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the DCMI to capture images.
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(#) Enable the clock for the DCMI and associated GPIOs using the following
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functions:
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RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_DCMI, ENABLE);
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOx, ENABLE);
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(#) DCMI pins configuration
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(++) Connect the involved DCMI pins to AF13 using the following function
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GPIO_PinAFConfig(GPIOx, GPIO_PinSourcex, GPIO_AF_DCMI);
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(++) Configure these DCMI pins in alternate function mode by calling
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the function GPIO_Init();
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(#) Declare a DCMI_InitTypeDef structure, for example:
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DCMI_InitTypeDef DCMI_InitStructure;
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and fill the DCMI_InitStructure variable with the allowed values
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of the structure member.
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(#) Initialize the DCMI interface by calling the function
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DCMI_Init(&DCMI_InitStructure);
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(#) Configure the DMA2_Stream1 channel1 to transfer Data from DCMI DR
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register to the destination memory buffer.
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(#) Enable DCMI interface using the function
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DCMI_Cmd(ENABLE);
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(#) Start the image capture using the function
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DCMI_CaptureCmd(ENABLE);
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(#) At this stage the DCMI interface waits for the first start of frame,
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then a DMA request is generated continuously/once (depending on the
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mode used, Continuous/Snapshot) to transfer the received data into
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the destination memory.
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-@- If you need to capture only a rectangular window from the received
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image, you have to use the DCMI_CROPConfig() function to configure
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the coordinates and size of the window to be captured, then enable
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the Crop feature using DCMI_CROPCmd(ENABLE);
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In this case, the Crop configuration should be made before to enable
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and start the DCMI interface. </pre><dl class="section attention"><dt>Attention</dt><dd></dd></dl>
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<h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
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<p>Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at: </p><pre class="fragment"> http://www.st.com/software_license_agreement_liberty_v2
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</pre><p>Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. </p>
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