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<div id="projectbrief">This document shows Ameba SDK 3.5 APIs</div>
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<div class="title">SYSTEM<div class="ingroups"><a class="el" href="group__sdk.html">Ameba SDK</a> » <a class="el" href="group__hal.html">HAL</a></div></div> </div>
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<p>system functions
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
Ameba Common</h2></td></tr>
<tr class="memitem:ga66c275f823ad53fe71b785b89fd03ce2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sys.html#ga66c275f823ad53fe71b785b89fd03ce2">sys_jtag_off</a> (void)</td></tr>
<tr class="memdesc:ga66c275f823ad53fe71b785b89fd03ce2"><td class="mdescLeft"> </td><td class="mdescRight">Turn off the JTAG function. <a href="#ga66c275f823ad53fe71b785b89fd03ce2">More...</a><br /></td></tr>
<tr class="separator:ga66c275f823ad53fe71b785b89fd03ce2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga9dd2ff152bfeef84b569aa8257b6f88e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sys.html#ga9dd2ff152bfeef84b569aa8257b6f88e">sys_clear_ota_signature</a> (void)</td></tr>
<tr class="memdesc:ga9dd2ff152bfeef84b569aa8257b6f88e"><td class="mdescLeft"> </td><td class="mdescRight">switch OTA image if the othe OTA image is valid <a href="#ga9dd2ff152bfeef84b569aa8257b6f88e">More...</a><br /></td></tr>
<tr class="separator:ga9dd2ff152bfeef84b569aa8257b6f88e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga8e67851723b154a1470f58c8bf1879aa"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sys.html#ga8e67851723b154a1470f58c8bf1879aa">sys_recover_ota_signature</a> (void)</td></tr>
<tr class="memdesc:ga8e67851723b154a1470f58c8bf1879aa"><td class="mdescLeft"> </td><td class="mdescRight">switch OTA image if the othe OTA image is valid <a href="#ga8e67851723b154a1470f58c8bf1879aa">More...</a><br /></td></tr>
<tr class="separator:ga8e67851723b154a1470f58c8bf1879aa"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaec7a0be648a4bfa30d2ee0884456e6cd"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sys.html#gaec7a0be648a4bfa30d2ee0884456e6cd">sys_log_uart_on</a> (void)</td></tr>
<tr class="memdesc:gaec7a0be648a4bfa30d2ee0884456e6cd"><td class="mdescLeft"> </td><td class="mdescRight">open log uart <a href="#gaec7a0be648a4bfa30d2ee0884456e6cd">More...</a><br /></td></tr>
<tr class="separator:gaec7a0be648a4bfa30d2ee0884456e6cd"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gabd88d03a3f149d035e7e9263d6ec90f6"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sys.html#gabd88d03a3f149d035e7e9263d6ec90f6">sys_log_uart_off</a> (void)</td></tr>
<tr class="memdesc:gabd88d03a3f149d035e7e9263d6ec90f6"><td class="mdescLeft"> </td><td class="mdescRight">close log uart <a href="#gabd88d03a3f149d035e7e9263d6ec90f6">More...</a><br /></td></tr>
<tr class="separator:gabd88d03a3f149d035e7e9263d6ec90f6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga4850cee0aa58f450fab06598ec6f281b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sys.html#ga4850cee0aa58f450fab06598ec6f281b">sys_adc_calibration</a> (u8 write, u16 *offset, u16 *gain)</td></tr>
<tr class="memdesc:ga4850cee0aa58f450fab06598ec6f281b"><td class="mdescLeft"> </td><td class="mdescRight">store or load adc calibration parameter <a href="#ga4850cee0aa58f450fab06598ec6f281b">More...</a><br /></td></tr>
<tr class="separator:ga4850cee0aa58f450fab06598ec6f281b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga2b1ed233a180d3991b4832e9de38e176"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sys.html#ga2b1ed233a180d3991b4832e9de38e176">sys_reset</a> (void)</td></tr>
<tr class="memdesc:ga2b1ed233a180d3991b4832e9de38e176"><td class="mdescLeft"> </td><td class="mdescRight">system software reset <a href="#ga2b1ed233a180d3991b4832e9de38e176">More...</a><br /></td></tr>
<tr class="separator:ga2b1ed233a180d3991b4832e9de38e176"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
Ameba1 Only</h2></td></tr>
<tr class="memitem:ga08d16f06a2890265dfef734c95952577"><td class="memItemLeft" align="right" valign="top">u8 </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sys.html#ga08d16f06a2890265dfef734c95952577">sys_is_sdram_power_on</a> (void)</td></tr>
<tr class="memdesc:ga08d16f06a2890265dfef734c95952577"><td class="mdescLeft"> </td><td class="mdescRight">check whether is sdram power on <a href="#ga08d16f06a2890265dfef734c95952577">More...</a><br /></td></tr>
<tr class="separator:ga08d16f06a2890265dfef734c95952577"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga106919e7d57b3674cc788e16d80aa7b7"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sys.html#ga106919e7d57b3674cc788e16d80aa7b7">sys_sdram_off</a> (void)</td></tr>
<tr class="memdesc:ga106919e7d57b3674cc788e16d80aa7b7"><td class="mdescLeft"> </td><td class="mdescRight">sdram power off <a href="#ga106919e7d57b3674cc788e16d80aa7b7">More...</a><br /></td></tr>
<tr class="separator:ga106919e7d57b3674cc788e16d80aa7b7"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="member-group"></a>
AmebaZ Only</h2></td></tr>
<tr class="memitem:gad754d2c29aec7cf2c69cc74e1f1622ff"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__sys.html#gad754d2c29aec7cf2c69cc74e1f1622ff">sys_cpu_reset</a> (void)</td></tr>
<tr class="memdesc:gad754d2c29aec7cf2c69cc74e1f1622ff"><td class="mdescLeft"> </td><td class="mdescRight">vector reset <a href="#gad754d2c29aec7cf2c69cc74e1f1622ff">More...</a><br /></td></tr>
<tr class="separator:gad754d2c29aec7cf2c69cc74e1f1622ff"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>system functions </p>
<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="ga4850cee0aa58f450fab06598ec6f281b"></a>
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<div class="memproto">
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<td class="memname">void sys_adc_calibration </td>
<td>(</td>
<td class="paramtype">u8 </td>
<td class="paramname"><em>write</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">u16 * </td>
<td class="paramname"><em>offset</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">u16 * </td>
<td class="paramname"><em>gain</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>store or load adc calibration parameter </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">write</td><td>this parameter can be one of the following values: <ul>
<li>0: load adc calibration parameter offset & gain from flash system data region </li>
<li>1: store adc calibration parameter offset & gain to flash system data region </li>
</ul>
</td></tr>
<tr><td class="paramname">offset</td><td>pointer to adc parameter offset </td></tr>
<tr><td class="paramname">gain</td><td>pointer to adc parameter gain </td></tr>
</table>
</dd>
</dl>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">none</td><td></td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga9dd2ff152bfeef84b569aa8257b6f88e"></a>
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<td class="memname">void sys_clear_ota_signature </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>switch OTA image if the othe OTA image is valid </p>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">none</td><td></td></tr>
</table>
</dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>for AmebaZ, sys_clear_ota_signature is the same with sys_recover_ota_signature </dd></dl>
</div>
</div>
<a class="anchor" id="gad754d2c29aec7cf2c69cc74e1f1622ff"></a>
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<td class="memname">void sys_cpu_reset </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>vector reset </p>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">none</td><td></td></tr>
</table>
</dd>
</dl>
</div>
</div>
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<td class="memname">u8 sys_is_sdram_power_on </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>check whether is sdram power on </p>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">1</td><td>power on 0: power off </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga66c275f823ad53fe71b785b89fd03ce2"></a>
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<td class="memname">void sys_jtag_off </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Turn off the JTAG function. </p>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">none</td><td></td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gabd88d03a3f149d035e7e9263d6ec90f6"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void sys_log_uart_off </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>close log uart </p>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">none</td><td></td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gaec7a0be648a4bfa30d2ee0884456e6cd"></a>
<div class="memitem">
<div class="memproto">
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<td class="memname">void sys_log_uart_on </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>open log uart </p>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">none</td><td></td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga8e67851723b154a1470f58c8bf1879aa"></a>
<div class="memitem">
<div class="memproto">
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<td class="memname">void sys_recover_ota_signature </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>switch OTA image if the othe OTA image is valid </p>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">none</td><td></td></tr>
</table>
</dd>
</dl>
<dl class="section note"><dt>Note</dt><dd>for AmebaZ, sys_clear_ota_signature is the same with sys_recover_ota_signature </dd></dl>
</div>
</div>
<a class="anchor" id="ga2b1ed233a180d3991b4832e9de38e176"></a>
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<td class="memname">void sys_reset </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>system software reset </p>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">none</td><td></td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga106919e7d57b3674cc788e16d80aa7b7"></a>
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<td class="memname">void sys_sdram_off </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>sdram power off </p>
<dl class="retval"><dt>Return values</dt><dd>
<table class="retval">
<tr><td class="paramname">none</td><td></td></tr>
</table>
</dd>
</dl>
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