733 lines
39 KiB
HTML
733 lines
39 KiB
HTML
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<p>write the Framebuffer
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<a href="#details">More...</a></p>
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<div class="textblock"><code>#include "<a class="el" href="_driver_8h_source.html">Driver.h</a>"</code><br />
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</div><div class="textblock"><div class="dynheader">
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Include dependency graph for Driver.c:</div>
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<area shape="rect" title="write the Framebuffer" alt="" coords="337,5,473,47"/>
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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:acfaa6e6c39d79e04fadf512cf9ca3944"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#acfaa6e6c39d79e04fadf512cf9ca3944">vDriver_GetId</a> (void)</td></tr>
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<tr class="memdesc:acfaa6e6c39d79e04fadf512cf9ca3944"><td class="mdescLeft"> </td><td class="mdescRight">get LCD driver chip id <a href="_driver_8c.html#acfaa6e6c39d79e04fadf512cf9ca3944">More...</a><br /></td></tr>
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<tr class="separator:acfaa6e6c39d79e04fadf512cf9ca3944"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3d6cd2f0685caf993fd7455dd100dd7c"><td class="memItemLeft" align="right" valign="top">static esp_err_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#a3d6cd2f0685caf993fd7455dd100dd7c">iDriver_sendLineFinish</a> (void)</td></tr>
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<tr class="memdesc:a3d6cd2f0685caf993fd7455dd100dd7c"><td class="mdescLeft"> </td><td class="mdescRight">send finish after line <a href="_driver_8c.html#a3d6cd2f0685caf993fd7455dd100dd7c">More...</a><br /></td></tr>
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<tr class="separator:a3d6cd2f0685caf993fd7455dd100dd7c"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae2d5a9bae2c3a62f89e2cc83cc36a61e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#ae2d5a9bae2c3a62f89e2cc83cc36a61e">vDriver_spiPreTransferCallback</a> (spi_transaction_t *t)</td></tr>
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<tr class="memdesc:ae2d5a9bae2c3a62f89e2cc83cc36a61e"><td class="mdescLeft"> </td><td class="mdescRight">Pre Transfer Callback. <a href="_driver_8c.html#ae2d5a9bae2c3a62f89e2cc83cc36a61e">More...</a><br /></td></tr>
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<tr class="separator:ae2d5a9bae2c3a62f89e2cc83cc36a61e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3ce4cd1bae3e49f2d06a880446db54d4"><td class="memItemLeft" align="right" valign="top">esp_err_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#a3ce4cd1bae3e49f2d06a880446db54d4">iDriver_sendCmd</a> (const uint8_t u8Cmd)</td></tr>
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<tr class="memdesc:a3ce4cd1bae3e49f2d06a880446db54d4"><td class="mdescLeft"> </td><td class="mdescRight">Send a command to the LCD. <a href="_driver_8c.html#a3ce4cd1bae3e49f2d06a880446db54d4">More...</a><br /></td></tr>
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<tr class="separator:a3ce4cd1bae3e49f2d06a880446db54d4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ab611c2d5911c284b757197882ea227be"><td class="memItemLeft" align="right" valign="top">static esp_err_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#ab611c2d5911c284b757197882ea227be">iDriver_sendLines</a> (uint16_t u16Ypos, uint16_t *pu16Linedata)</td></tr>
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<tr class="memdesc:ab611c2d5911c284b757197882ea227be"><td class="mdescLeft"> </td><td class="mdescRight">send line to lcd chip <a href="_driver_8c.html#ab611c2d5911c284b757197882ea227be">More...</a><br /></td></tr>
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<tr class="separator:ab611c2d5911c284b757197882ea227be"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a066209485105862c60c5f9393caa48be"><td class="memItemLeft" align="right" valign="top">esp_err_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#a066209485105862c60c5f9393caa48be">iDriver_SendData</a> (const uint8_t *pu8Data, uint16_t u16Len)</td></tr>
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<tr class="memdesc:a066209485105862c60c5f9393caa48be"><td class="mdescLeft"> </td><td class="mdescRight">Send data to the LCD. <a href="_driver_8c.html#a066209485105862c60c5f9393caa48be">More...</a><br /></td></tr>
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<tr class="separator:a066209485105862c60c5f9393caa48be"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a3ce1541687c13e00a1cc1d4d7ff564aa"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#a3ce1541687c13e00a1cc1d4d7ff564aa">vDriver_getFramenufferPerLine</a> (uint16_t *pu16Dest, uint16_t u16Line, uint16_t u16Linect, uint16_t ***<a class="el" href="_l_c_d_8c.html#a1cf4497f1e3b602bc54e6f42ea73d9ed">pu16Framebuffer</a>)</td></tr>
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<tr class="memdesc:a3ce1541687c13e00a1cc1d4d7ff564aa"><td class="mdescLeft"> </td><td class="mdescRight">Get the pixel data for a set of lines (with implied line size of 320) <a href="_driver_8c.html#a3ce1541687c13e00a1cc1d4d7ff564aa">More...</a><br /></td></tr>
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<tr class="separator:a3ce1541687c13e00a1cc1d4d7ff564aa"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:adb1369972e80eb05d5e831cbc7cf3d4f"><td class="memItemLeft" align="right" valign="top">esp_err_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#adb1369972e80eb05d5e831cbc7cf3d4f">vDriver_init</a> (void)</td></tr>
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<tr class="memdesc:adb1369972e80eb05d5e831cbc7cf3d4f"><td class="mdescLeft"> </td><td class="mdescRight">Initialize the driver. <a href="_driver_8c.html#adb1369972e80eb05d5e831cbc7cf3d4f">More...</a><br /></td></tr>
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<tr class="separator:adb1369972e80eb05d5e831cbc7cf3d4f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a62a79453d5cfaf0693a21714162f22d4"><td class="memItemLeft" align="right" valign="top">esp_err_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#a62a79453d5cfaf0693a21714162f22d4">iDriver_writeFramebuffer</a> (uint16_t ***<a class="el" href="_l_c_d_8c.html#a1cf4497f1e3b602bc54e6f42ea73d9ed">pu16Framebuffer</a>)</td></tr>
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<tr class="memdesc:a62a79453d5cfaf0693a21714162f22d4"><td class="mdescLeft"> </td><td class="mdescRight">write framebuffer to LCD via SPI <a href="_driver_8c.html#a62a79453d5cfaf0693a21714162f22d4">More...</a><br /></td></tr>
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<tr class="separator:a62a79453d5cfaf0693a21714162f22d4"><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="var-members"></a>
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Variables</h2></td></tr>
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<tr class="memitem:af04b0de520c6e42f039c5edf47b13dc2"><td class="memItemLeft" align="right" valign="top">spi_device_handle_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#af04b0de520c6e42f039c5edf47b13dc2">spi</a></td></tr>
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<tr class="separator:af04b0de520c6e42f039c5edf47b13dc2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a9afae6881efba341049aa70a18412c92"><td class="memItemLeft" align="right" valign="top">uint16_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#a9afae6881efba341049aa70a18412c92">lines</a> [2]</td></tr>
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<tr class="separator:a9afae6881efba341049aa70a18412c92"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0cf1d2efd4835b68210776d5c130abd8"><td class="memItemLeft" align="right" valign="top">int16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#a0cf1d2efd4835b68210776d5c130abd8">sending_line</a> =-1</td></tr>
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<tr class="memitem:ac797ff8a3dcc46966bb645519d99c822"><td class="memItemLeft" align="right" valign="top">int16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#ac797ff8a3dcc46966bb645519d99c822">calc_line</a> =0</td></tr>
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<tr class="memitem:a16670a27e1bd7092e32c99bb10c912ee"><td class="memItemLeft" align="right" valign="top">static DRAM_ATTR const <a class="el" href="structlcd__init__cmd__t.html">lcd_init_cmd_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#a16670a27e1bd7092e32c99bb10c912ee">st_init_cmds</a> []</td></tr>
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<tr class="memitem:a6aa4436d527ed2c7be6421f98e864938"><td class="memItemLeft" align="right" valign="top">static DRAM_ATTR const <a class="el" href="structlcd__init__cmd__t.html">lcd_init_cmd_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="_driver_8c.html#a6aa4436d527ed2c7be6421f98e864938">ili_init_cmds</a> []</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>write the Framebuffer </p>
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<dl class="section author"><dt>Author</dt><dd>Hendrik Schutter </dd></dl>
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<dl class="section version"><dt>Version</dt><dd>V1.0 </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>03.11.2020</dd></dl>
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<p>This code used SPI to write data to the LCD driver like ILI9341 or ST7789V. </p>
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</div><h2 class="groupheader">Function Documentation</h2>
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<a id="a3ce4cd1bae3e49f2d06a880446db54d4"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a3ce4cd1bae3e49f2d06a880446db54d4">◆ </a></span>iDriver_sendCmd()</h2>
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<td class="memname">esp_err_t iDriver_sendCmd </td>
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<td>(</td>
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<td class="paramtype">const uint8_t </td>
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<td class="paramname"><em>u8Cmd</em></td><td>)</td>
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<td></td>
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<p>Send a command to the LCD. </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">const</td><td>uint8_t u8Cmd </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>esp error code </dd></dl>
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<dl class="section author"><dt>Author</dt><dd>Hendrik Schutter </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>3.11.2020</dd></dl>
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<p>Send a command to the LCD. Uses spi_device_polling_transmit, which waits until the transfer is complete.</p>
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<p>Since command transactions are usually small, they are handled in polling mode for higher speed. The overhead of interrupt transactions is more than just waiting for the transaction to complete. </p>
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<div class="dynheader">
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Here is the caller graph for this function:</div>
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<div class="dyncontent">
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<div class="center"><img src="_driver_8c_a3ce4cd1bae3e49f2d06a880446db54d4_icgraph.png" border="0" usemap="#a_driver_8c_a3ce4cd1bae3e49f2d06a880446db54d4_icgraph" alt=""/></div>
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<map name="_driver_8c_a3ce4cd1bae3e49f2d06a880446db54d4_icgraph" id="a_driver_8c_a3ce4cd1bae3e49f2d06a880446db54d4_icgraph">
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<area shape="rect" title="Send a command to the LCD." alt="" coords="415,31,537,57"/>
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<area shape="rect" href="_driver_8c.html#acfaa6e6c39d79e04fadf512cf9ca3944" title="get LCD driver chip id" alt="" coords="264,5,367,32"/>
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<area shape="rect" href="_driver_8c.html#adb1369972e80eb05d5e831cbc7cf3d4f" title="Initialize the driver." alt="" coords="129,31,216,57"/>
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<a id="a066209485105862c60c5f9393caa48be"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a066209485105862c60c5f9393caa48be">◆ </a></span>iDriver_SendData()</h2>
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<td class="memname">esp_err_t iDriver_SendData </td>
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<td>(</td>
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<td class="paramtype">const uint8_t * </td>
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<td class="paramname"><em>pu8Data</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint16_t </td>
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<td class="paramname"><em>u16Len</em> </td>
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<td></td>
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<td>)</td>
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<p>Send data to the LCD. </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">const</td><td>uint8_t *pu8Data </td></tr>
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<tr><td class="paramname">uint16_t</td><td>u16Len </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>esp error code </dd></dl>
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<dl class="section author"><dt>Author</dt><dd>Hendrik Schutter </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>3.11.2020</dd></dl>
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<p>Send data to the LCD. Uses spi_device_polling_transmit, which waits until the transfer is complete.</p>
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<p>Since data transactions are usually small, they are handled in polling mode for higher speed. The overhead of interrupt transactions is more than just waiting for the transaction to complete. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a3d6cd2f0685caf993fd7455dd100dd7c">◆ </a></span>iDriver_sendLineFinish()</h2>
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<td class="memname">static esp_err_t iDriver_sendLineFinish </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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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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<p>send finish after line </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">void</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="section return"><dt>Returns</dt><dd>esp error code </dd></dl>
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<dl class="section author"><dt>Author</dt><dd>Hendrik Schutter </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>3.11.2020 </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ab611c2d5911c284b757197882ea227be">◆ </a></span>iDriver_sendLines()</h2>
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<td class="memname">static esp_err_t iDriver_sendLines </td>
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<td>(</td>
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<td class="paramtype">uint16_t </td>
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<td class="paramname"><em>u16Ypos</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint16_t * </td>
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<td class="paramname"><em>pu16Linedata</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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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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</div><div class="memdoc">
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<p>send line to lcd chip </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">uint16_t</td><td>u16Ypos </td></tr>
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<tr><td class="paramname">uint16_t</td><td>*pu16Linedata </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>esp error code </dd></dl>
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<dl class="section author"><dt>Author</dt><dd>Hendrik Schutter </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>3.11.2020</dd></dl>
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<p>To send a set of lines we have to send a command, 2 data bytes, another command, 2 more data bytes and another command before sending the line data itself; a total of 6 transactions. (We can't put all of this in just one transaction because the D/C line needs to be toggled in the middle.) This routine queues these commands up as interrupt transactions so they get sent faster (compared to calling spi_device_transmit several times), and at the mean while the lines for next transactions can get calculated. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a62a79453d5cfaf0693a21714162f22d4">◆ </a></span>iDriver_writeFramebuffer()</h2>
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<td class="memname">esp_err_t iDriver_writeFramebuffer </td>
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<td>(</td>
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<td class="paramtype">uint16_t *** </td>
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<td class="paramname"><em>pu16Framebuffer</em></td><td>)</td>
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<td></td>
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<p>write framebuffer to LCD via SPI </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">uint16_t</td><td>***pu16Framebuffer </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>esp error code </dd></dl>
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<dl class="section author"><dt>Author</dt><dd>Hendrik Schutter </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>3.11.2020 </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a3ce1541687c13e00a1cc1d4d7ff564aa">◆ </a></span>vDriver_getFramenufferPerLine()</h2>
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<td class="memname">void vDriver_getFramenufferPerLine </td>
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<td>(</td>
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<td class="paramtype">uint16_t * </td>
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<td class="paramname"><em>pu16Dest</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint16_t </td>
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<td class="paramname"><em>u16Line</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint16_t </td>
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<td class="paramname"><em>u16Linect</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint16_t *** </td>
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<td class="paramname"><em>pu16Framebuffer</em> </td>
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<tr>
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<td></td>
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<td>)</td>
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</div><div class="memdoc">
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<p>Get the pixel data for a set of lines (with implied line size of 320) </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">uint16_t</td><td>*pu16Dest </td></tr>
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<tr><td class="paramname">uint16_t</td><td>u16Line </td></tr>
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<tr><td class="paramname">uint16_t</td><td>u16Linect </td></tr>
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<tr><td class="paramname">uint16_t</td><td>***pu16Framebuffer </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
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<dl class="section author"><dt>Author</dt><dd>Hendrik Schutter </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>3.11.2020 </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#acfaa6e6c39d79e04fadf512cf9ca3944">◆ </a></span>vDriver_GetId()</h2>
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<td class="memname">uint32_t vDriver_GetId </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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<p>get LCD driver chip id </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<dl class="section return"><dt>Returns</dt><dd>uint32_t </dd></dl>
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<dl class="section author"><dt>Author</dt><dd>Hendrik Schutter </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>3.11.2020 </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#adb1369972e80eb05d5e831cbc7cf3d4f">◆ </a></span>vDriver_init()</h2>
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<td class="memname">esp_err_t vDriver_init </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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<p>Initialize the driver. </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">void</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="section return"><dt>Returns</dt><dd>esp error code </dd></dl>
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<dl class="section author"><dt>Author</dt><dd>Hendrik Schutter </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>3.11.2020 </dd></dl>
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<p>Enable backlight</p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae2d5a9bae2c3a62f89e2cc83cc36a61e">◆ </a></span>vDriver_spiPreTransferCallback()</h2>
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<td class="memname">void vDriver_spiPreTransferCallback </td>
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<td>(</td>
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<td class="paramtype">spi_transaction_t * </td>
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<td class="paramname"><em>t</em></td><td>)</td>
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<p>Pre Transfer Callback. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">spi_transaction_t</td><td>*t </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>void </dd></dl>
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<dl class="section author"><dt>Author</dt><dd>Hendrik Schutter </dd></dl>
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<dl class="section date"><dt>Date</dt><dd>3.11.2020</dd></dl>
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<p>This function is called (in irq context!) just before a transmission starts. It will set the D/C line to the value indicated in the user field. </p>
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<h2 class="groupheader">Variable Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ac797ff8a3dcc46966bb645519d99c822">◆ </a></span>calc_line</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a6aa4436d527ed2c7be6421f98e864938">◆ </a></span>ili_init_cmds</h2>
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<td class="memname">DRAM_ATTR const <a class="el" href="structlcd__init__cmd__t.html">lcd_init_cmd_t</a> ili_init_cmds[]</td>
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<h2 class="memtitle"><span class="permalink"><a href="#a9afae6881efba341049aa70a18412c92">◆ </a></span>lines</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a0cf1d2efd4835b68210776d5c130abd8">◆ </a></span>sending_line</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#af04b0de520c6e42f039c5edf47b13dc2">◆ </a></span>spi</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a16670a27e1bd7092e32c99bb10c912ee">◆ </a></span>st_init_cmds</h2>
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<td class="memname">DRAM_ATTR const <a class="el" href="structlcd__init__cmd__t.html">lcd_init_cmd_t</a> st_init_cmds[]</td>
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