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diff --git a/CMSIS/Documentation/RTX/html/group___c_m_s_i_s___r_t_o_s___mail.html b/CMSIS/Documentation/RTX/html/group___c_m_s_i_s___r_t_o_s___mail.html new file mode 100644 index 0000000..2aae8cb --- /dev/null +++ b/CMSIS/Documentation/RTX/html/group___c_m_s_i_s___r_t_o_s___mail.html @@ -0,0 +1,586 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> +<head> +<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> +<meta http-equiv="X-UA-Compatible" content="IE=9"/> +<title>Mail Queue Management</title> +<title>CMSIS-RTOS RTX: Mail Queue Management</title> +<link href="tabs.css" rel="stylesheet" type="text/css"/> +<link href="cmsis.css" rel="stylesheet" type="text/css" /> +<script type="text/javascript" src="jquery.js"></script> +<script type="text/javascript" src="dynsections.js"></script> +<script type="text/javascript" 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id="projectbrief">CMSIS-RTOS RTX: Real-Time Operating System for Cortex-M processor-based devices</div> + </td> + </tr> + </tbody> +</table> +</div> +<!-- end header part --> +<div id="CMSISnav" class="tabs1"> + <ul class="tablist"> + <script type="text/javascript"> + <!-- + writeComponentTabs.call(this); + //--> + </script> + </ul> +</div> +<!-- Generated by Doxygen 1.8.2 --> +<script type="text/javascript"> +var searchBox = new SearchBox("searchBox", "search",false,'Search'); +</script> + <div id="navrow1" class="tabs"> + <ul class="tablist"> + <li><a href="index.html"><span>Main Page</span></a></li> + <li><a href="pages.html"><span>Usage and Description</span></a></li> + <li><a href="modules.html"><span>Reference</span></a></li> + <li> + <div id="MSearchBox" class="MSearchBoxInactive"> + <span class="left"> + <img id="MSearchSelect" src="search/mag_sel.png" + onmouseover="return searchBox.OnSearchSelectShow()" + onmouseout="return searchBox.OnSearchSelectHide()" + alt=""/> + <input 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searchBox.OnSearchSelectShow()" + onmouseout="return searchBox.OnSearchSelectHide()" + onkeydown="return searchBox.OnSearchSelectKey(event)"> +<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Macros</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark"> </span>Pages</a></div> + +<!-- iframe showing the search results (closed by default) --> +<div id="MSearchResultsWindow"> +<iframe src="javascript:void(0)" frameborder="0" + name="MSearchResults" id="MSearchResults"> +</iframe> +</div> + +<div class="header"> + <div class="summary"> +<a href="#define-members">Macros</a> | +<a href="#func-members">Functions</a> </div> + <div class="headertitle"> +<div class="title">Mail Queue Management</div> </div> +<div class="ingroups"><a class="el" href="group___c_m_s_i_s___r_t_o_s.html">CMSIS-RTOS API (RTX)</a></div></div><!--header--> +<div class="contents"> + +<p>Control, send, receive, or wait for mail. +<a href="#details">More...</a></p> +<table class="memberdecls"> +<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a> +Macros</h2></td></tr> +<tr class="memitem:gaceb2e0071ce160d153047f2eac1aca8e"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaceb2e0071ce160d153047f2eac1aca8e">osFeature_MailQ</a>   1</td></tr> +<tr class="memdesc:gaceb2e0071ce160d153047f2eac1aca8e"><td class="mdescLeft"> </td><td class="mdescRight">Mail Queues available. <a href="#gaceb2e0071ce160d153047f2eac1aca8e"></a><br/></td></tr> +<tr class="separator:gaceb2e0071ce160d153047f2eac1aca8e"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga58d712b16c0c6668059f509386d1e55b"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#ga58d712b16c0c6668059f509386d1e55b">osMailQDef</a>(name, queue_sz, type)</td></tr> +<tr class="memdesc:ga58d712b16c0c6668059f509386d1e55b"><td class="mdescLeft"> </td><td class="mdescRight">Create a Mail Queue Definition. <a href="#ga58d712b16c0c6668059f509386d1e55b"></a><br/></td></tr> +<tr class="separator:ga58d712b16c0c6668059f509386d1e55b"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gad2deeb66d51ade54e63d8f87ff2ec9d2"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gad2deeb66d51ade54e63d8f87ff2ec9d2">osMailQ</a>(name)   &os_mailQ_def_##name</td></tr> +<tr class="memdesc:gad2deeb66d51ade54e63d8f87ff2ec9d2"><td class="mdescLeft"> </td><td class="mdescRight">Access a Mail Queue Definition. <a href="#gad2deeb66d51ade54e63d8f87ff2ec9d2"></a><br/></td></tr> +<tr class="separator:gad2deeb66d51ade54e63d8f87ff2ec9d2"><td class="memSeparator" colspan="2"> </td></tr> +</table><table class="memberdecls"> +<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> +Functions</h2></td></tr> +<tr class="memitem:gaa177e7fe5820dd70d8c9e46ded131174"><td class="memItemLeft" align="right" valign="top"><a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a> (const <a class="el" href="structos_mail_q_def__t.html">osMailQDef_t</a> *queue_def, <a class="el" href="cmsis__os_8h.html#adfeb153a84a81309e2d958268197617f">osThreadId</a> thread_id)</td></tr> +<tr class="memdesc:gaa177e7fe5820dd70d8c9e46ded131174"><td class="mdescLeft"> </td><td class="mdescRight">Create and Initialize mail queue. <a href="#gaa177e7fe5820dd70d8c9e46ded131174"></a><br/></td></tr> +<tr class="separator:gaa177e7fe5820dd70d8c9e46ded131174"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gadf5ce811bd6a56e617e902a1db6c2194"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gadf5ce811bd6a56e617e902a1db6c2194">osMailAlloc</a> (<a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> queue_id, uint32_t millisec)</td></tr> +<tr class="memdesc:gadf5ce811bd6a56e617e902a1db6c2194"><td class="mdescLeft"> </td><td class="mdescRight">Allocate a memory block from a mail. <a href="#gadf5ce811bd6a56e617e902a1db6c2194"></a><br/></td></tr> +<tr class="separator:gadf5ce811bd6a56e617e902a1db6c2194"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga8fde74f6fe5b9e88f75cc5eb8f2124fd"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#ga8fde74f6fe5b9e88f75cc5eb8f2124fd">osMailCAlloc</a> (<a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> queue_id, uint32_t millisec)</td></tr> +<tr class="memdesc:ga8fde74f6fe5b9e88f75cc5eb8f2124fd"><td class="mdescLeft"> </td><td class="mdescRight">Allocate a memory block from a mail and set memory block to zero. <a href="#ga8fde74f6fe5b9e88f75cc5eb8f2124fd"></a><br/></td></tr> +<tr class="separator:ga8fde74f6fe5b9e88f75cc5eb8f2124fd"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga485ef6f81854ebda8ffbce4832181e02"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#ga485ef6f81854ebda8ffbce4832181e02">osMailPut</a> (<a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> queue_id, void *mail)</td></tr> +<tr class="memdesc:ga485ef6f81854ebda8ffbce4832181e02"><td class="mdescLeft"> </td><td class="mdescRight">Put a mail to a queue. <a href="#ga485ef6f81854ebda8ffbce4832181e02"></a><br/></td></tr> +<tr class="separator:ga485ef6f81854ebda8ffbce4832181e02"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gac6ad7e6e7d6c4a80e60da22c57a42ccd"><td class="memItemLeft" align="right" valign="top"><a class="el" href="cmsis__os_8h.html#ac6b67612d20f480bef2d76bb64e95be8">os_InRegs</a> <a class="el" href="group___c_m_s_i_s___r_t_o_s___definitions.html#structos_event">osEvent</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gac6ad7e6e7d6c4a80e60da22c57a42ccd">osMailGet</a> (<a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> queue_id, uint32_t millisec)</td></tr> +<tr class="memdesc:gac6ad7e6e7d6c4a80e60da22c57a42ccd"><td class="mdescLeft"> </td><td class="mdescRight">Get a mail from a queue. <a href="#gac6ad7e6e7d6c4a80e60da22c57a42ccd"></a><br/></td></tr> +<tr class="separator:gac6ad7e6e7d6c4a80e60da22c57a42ccd"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga27c1060cf21393f96b4fd1ed1c0167cc"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#ga27c1060cf21393f96b4fd1ed1c0167cc">osMailFree</a> (<a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> queue_id, void *mail)</td></tr> +<tr class="memdesc:ga27c1060cf21393f96b4fd1ed1c0167cc"><td class="mdescLeft"> </td><td class="mdescRight">Free a memory block from a mail. <a href="#ga27c1060cf21393f96b4fd1ed1c0167cc"></a><br/></td></tr> +<tr class="separator:ga27c1060cf21393f96b4fd1ed1c0167cc"><td class="memSeparator" colspan="2"> </td></tr> +</table> +<a name="details" id="details"></a><h2 class="groupheader">Description</h2> +<p>The Mail Queue Management function group allow to control, send, receive, or wait for mail. A mail is a memory block that is sent to a thread or interrupt service routine.</p> +<div class="image"> +<img src="MailQueue.png" alt="MailQueue.png"/> +<div class="caption"> +CMSIS-RTOS Mail Queue</div></div> +<h2 class="groupheader">Macro Definition Documentation</h2> +<a class="anchor" id="gaceb2e0071ce160d153047f2eac1aca8e"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">#define osFeature_MailQ   1</td> + </tr> + </table> +</div><div class="memdoc"> +<p>CMSIS-RTOS RTX supports mail queues. </p> + +</div> +</div> +<a class="anchor" id="gad2deeb66d51ade54e63d8f87ff2ec9d2"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">#define osMailQ</td> + <td>(</td> + <td class="paramtype"> </td> + <td class="paramname">name</td><td>)</td> + <td>   &os_mailQ_def_##name</td> + </tr> + </table> +</div><div class="memdoc"> +<p>Access to the mail queue definition for the function <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a>.</p> +<dl class="params"><dt>Parameters</dt><dd> + <table class="params"> + <tr><td class="paramname">name</td><td>name of the queue </td></tr> + </table> + </dd> +</dl> + +</div> +</div> +<a class="anchor" id="ga58d712b16c0c6668059f509386d1e55b"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">#define osMailQDef</td> + <td>(</td> + <td class="paramtype"> </td> + <td class="paramname">name, </td> + </tr> + <tr> + <td class="paramkey"></td> + <td></td> + <td class="paramtype"> </td> + <td class="paramname">queue_sz, </td> + </tr> + <tr> + <td class="paramkey"></td> + <td></td> + <td class="paramtype"> </td> + <td class="paramname">type </td> + </tr> + <tr> + <td></td> + <td>)</td> + <td></td><td></td> + </tr> + </table> +</div><div class="memdoc"> +<p>Define the attributes of a mail queue that can by the function <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a> using <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gad2deeb66d51ade54e63d8f87ff2ec9d2">osMailQ</a>.</p> +<dl class="section note"><dt>Note</dt><dd>The parameter <em>thread</em> registers the receiving thread for a mail and is needed for the general <a class="el" href="_technical_data.html#osWait">osWait</a> function to deliver the mail.</dd></dl> +<dl class="params"><dt>Parameters</dt><dd> + <table class="params"> + <tr><td class="paramname">name</td><td>name of the queue </td></tr> + <tr><td class="paramname">queue_sz</td><td>maximum number of messages in queue </td></tr> + <tr><td class="paramname">type</td><td>data type of a single message element </td></tr> + </table> + </dd> +</dl> + +</div> +</div> +<h2 class="groupheader">Function Documentation</h2> +<a class="anchor" id="gadf5ce811bd6a56e617e902a1db6c2194"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">void * osMailAlloc </td> + <td>(</td> + <td class="paramtype"><a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> </td> + <td class="paramname"><em>queue_id</em>, </td> + </tr> + <tr> + <td class="paramkey"></td> + <td></td> + <td class="paramtype">uint32_t </td> + <td class="paramname"><em>millisec</em> </td> + </tr> + <tr> + <td></td> + <td>)</td> + <td></td><td></td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="params"><dt>Parameters</dt><dd> + <table class="params"> + <tr><td class="paramdir">[in]</td><td class="paramname">queue_id</td><td>mail queue ID obtained with <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a>. </td></tr> + <tr><td class="paramdir">[in]</td><td class="paramname">millisec</td><td><a class="el" href="_function_overview.html#CMSIS_RTOS_TimeOutValue">Timout Value</a> or 0 in case of no time-out </td></tr> + </table> + </dd> +</dl> +<dl class="section return"><dt>Returns</dt><dd>pointer to memory block that can be filled with mail or NULL in case of error.</dd></dl> +<p>Allocate a memory block from the mail queue that is filled with the mail information.</p> +<p>The argument <em>queue_id</em> specifies a mail queue identifier that is obtain with <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a>.</p> +<p>The argument <em>millisec</em> specifies how long the system waits for a mail slot to become available. While the system waits the tread calling this function is put into the state <b>WAITING</b>. The <em>millisec</em> timeout can have the following values:</p> +<ul> +<li>when <em>millisec</em> is 0, the function returns instantly.</li> +<li>when <em>millisec</em> is set to <b>osWaitForever</b> the function will wait for an infinite time until a mail slot can be allocated.</li> +<li>all other values specify a time in millisecond for a timeout.</li> +</ul> +<dl class="section note"><dt>Note</dt><dd>The parameter <em>millisec</em> must be 0 for using this function in an ISR.</dd></dl> +<p>A NULL pointer is returned when no memory slot can be obtained or <em>queue</em> specifies an illegal parameter.</p> +<dl class="section note"><dt>Note</dt><dd><a class="el" href="_function_overview.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a> can call this function. </dd></dl> + +</div> +</div> +<a class="anchor" id="ga8fde74f6fe5b9e88f75cc5eb8f2124fd"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">void * osMailCAlloc </td> + <td>(</td> + <td class="paramtype"><a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> </td> + <td class="paramname"><em>queue_id</em>, </td> + </tr> + <tr> + <td class="paramkey"></td> + <td></td> + <td class="paramtype">uint32_t </td> + <td class="paramname"><em>millisec</em> </td> + </tr> + <tr> + <td></td> + <td>)</td> + <td></td><td></td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="params"><dt>Parameters</dt><dd> + <table class="params"> + <tr><td class="paramdir">[in]</td><td class="paramname">queue_id</td><td>mail queue ID obtained with <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a>. </td></tr> + <tr><td class="paramdir">[in]</td><td class="paramname">millisec</td><td><a class="el" href="_function_overview.html#CMSIS_RTOS_TimeOutValue">Timout Value</a> or 0 in case of no time-out </td></tr> + </table> + </dd> +</dl> +<dl class="section return"><dt>Returns</dt><dd>pointer to memory block that can be filled with mail or NULL in case of error.</dd></dl> +<p>Allocate a memory block from the mail queue that is filled with the mail information. The memory block returned is cleared.</p> +<p>The argument <em>queue_id</em> specifies a mail queue identifier that is obtain with <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a>.</p> +<p>The argument <em>millisec</em> specifies how long the system waits for a mail slot to become available. While the system waits the thread that is calling this function is put into the state <b>WAITING</b>. The <em>millisec</em> timeout can have the following values:</p> +<ul> +<li>when <em>millisec</em> is 0, the function returns instantly.</li> +<li>when <em>millisec</em> is set to <b>osWaitForever</b> the function will wait for an infinite time until a mail slot can be allocated.</li> +<li>all other values specify a time in millisecond for a timeout.</li> +</ul> +<dl class="section note"><dt>Note</dt><dd>The parameter <em>millisec</em> must be 0 for using this function in an ISR.</dd></dl> +<p>A NULL pointer is returned when no memory block can be obtained or <em>queue</em> specifies an illegal parameter.</p> +<dl class="section note"><dt>Note</dt><dd><a class="el" href="_function_overview.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a> can call this function. </dd></dl> + +</div> +</div> +<a class="anchor" id="gaa177e7fe5820dd70d8c9e46ded131174"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname"><a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> osMailCreate </td> + <td>(</td> + <td class="paramtype">const <a class="el" href="structos_mail_q_def__t.html">osMailQDef_t</a> * </td> + <td class="paramname"><em>queue_def</em>, </td> + </tr> + <tr> + <td class="paramkey"></td> + <td></td> + <td class="paramtype"><a class="el" href="cmsis__os_8h.html#adfeb153a84a81309e2d958268197617f">osThreadId</a> </td> + <td class="paramname"><em>thread_id</em> </td> + </tr> + <tr> + <td></td> + <td>)</td> + <td></td><td></td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="params"><dt>Parameters</dt><dd> + <table class="params"> + <tr><td class="paramdir">[in]</td><td class="paramname">queue_def</td><td>reference to the mail queue definition obtain with <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gad2deeb66d51ade54e63d8f87ff2ec9d2">osMailQ</a> </td></tr> + <tr><td class="paramdir">[in]</td><td class="paramname">thread_id</td><td>thread ID (obtained by <a class="el" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gac59b5713cb083702dce759c73fd90dff">osThreadCreate</a> or <a class="el" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gab1df2a28925862ef8f9cf4e1c995c5a7">osThreadGetId</a>) or NULL. </td></tr> + </table> + </dd> +</dl> +<dl class="section return"><dt>Returns</dt><dd>mail queue ID for reference by other functions or NULL in case of error.</dd></dl> +<p>Initialize and create a mail queue.</p> +<dl class="section note"><dt>Note</dt><dd>Cannot be called from <a class="el" href="_function_overview.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a>.</dd></dl> +<p><b>Example</b> </p> +<div class="fragment"><div class="line"><span class="preprocessor">#include "<a class="code" href="cmsis__os_8h.html">cmsis_os.h</a>"</span></div> +<div class="line"> </div> +<div class="line"><a class="code" href="cmsis__os_8h.html#adfeb153a84a81309e2d958268197617f" title="Thread ID identifies the thread (pointer to a thread control block).">osThreadId</a> tid_thread1; <span class="comment">// ID for thread 1</span></div> +<div class="line"><a class="code" href="cmsis__os_8h.html#adfeb153a84a81309e2d958268197617f" title="Thread ID identifies the thread (pointer to a thread control block).">osThreadId</a> tid_thread2; <span class="comment">// ID for thread 2</span></div> +<div class="line"> </div> +<div class="line"><span class="keyword">typedef</span> <span class="keyword">struct </span>{ <span class="comment">// Mail object structure</span></div> +<div class="line"> <span class="keywordtype">float</span> voltage; <span class="comment">// AD result of measured voltage</span></div> +<div class="line"> <span class="keywordtype">float</span> current; <span class="comment">// AD result of measured current</span></div> +<div class="line"> <span class="keywordtype">int</span> counter; <span class="comment">// A counter value</span></div> +<div class="line">} T_MEAS;</div> +<div class="line"> </div> +<div class="line"><a class="code" href="group___c_m_s_i_s___r_t_o_s___mail.html#ga58d712b16c0c6668059f509386d1e55b" title="Create a Mail Queue Definition.">osMailQDef</a>(mail, 16, T_MEAS); <span class="comment">// Define mail queue</span></div> +<div class="line"><a class="code" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5" title="Mail ID identifies the mail queue (pointer to a mail queue control block).">osMailQId</a> mail;</div> +<div class="line"> </div> +<div class="line"><span class="keywordtype">void</span> send_thread (<span class="keywordtype">void</span> <span class="keyword">const</span> *argument); <span class="comment">// forward reference</span></div> +<div class="line"><span class="keywordtype">void</span> recv_thread (<span class="keywordtype">void</span> <span class="keyword">const</span> *argument);</div> +<div class="line"> </div> +<div class="line"><a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gaee93d929beb350f16e5cc7fa602e229f" title="Create a Thread Definition with function, priority, and stack requirements.">osThreadDef</a>(send_thread, <a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#ga7f2b42f1983b9107775ec2a1c69a849aa45a2895ad30c79fb97de18cac7cc19f1" title="priority: normal (default)">osPriorityNormal</a>, 1, 0); <span class="comment">// thread definitions</span></div> +<div class="line"><a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gaee93d929beb350f16e5cc7fa602e229f" title="Create a Thread Definition with function, priority, and stack requirements.">osThreadDef</a>(recv_thread, <a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#ga7f2b42f1983b9107775ec2a1c69a849aa45a2895ad30c79fb97de18cac7cc19f1" title="priority: normal (default)">osPriorityNormal</a>, 1, 2000);</div> +<div class="line"> </div> +<div class="line"><span class="comment">//</span></div> +<div class="line"><span class="comment">// Thread 1: Send thread</span></div> +<div class="line"><span class="comment">//</span></div> +<div class="line"><span class="keywordtype">void</span> send_thread (<span class="keywordtype">void</span> <span class="keyword">const</span> *argument) {</div> +<div class="line"> T_MEAS *mptr;</div> +<div class="line"> </div> +<div class="line"> mptr = <a class="code" href="group___c_m_s_i_s___r_t_o_s___mail.html#gadf5ce811bd6a56e617e902a1db6c2194" title="Allocate a memory block from a mail.">osMailAlloc</a>(mail, <a class="code" href="cmsis__os_8h.html#a9eb9a7a797a42e4b55eb171ecc609ddb" title="Timeout value.">osWaitForever</a>); <span class="comment">// Allocate memory</span></div> +<div class="line"> mptr->voltage = 223.72; <span class="comment">// Set the mail content</span></div> +<div class="line"> mptr->current = 17.54;</div> +<div class="line"> mptr->counter = 120786;</div> +<div class="line"> <a class="code" href="group___c_m_s_i_s___r_t_o_s___mail.html#ga485ef6f81854ebda8ffbce4832181e02" title="Put a mail to a queue.">osMailPut</a>(mail, mptr); <span class="comment">// Send Mail</span></div> +<div class="line"> <a class="code" href="group___c_m_s_i_s___r_t_o_s___wait.html#ga02e19d5e723bfb06ba9324d625162255" title="Wait for Timeout (Time Delay).">osDelay</a>(100);</div> +<div class="line"> </div> +<div class="line"> mptr = <a class="code" href="group___c_m_s_i_s___r_t_o_s___mail.html#gadf5ce811bd6a56e617e902a1db6c2194" title="Allocate a memory block from a mail.">osMailAlloc</a>(mail, <a class="code" href="cmsis__os_8h.html#a9eb9a7a797a42e4b55eb171ecc609ddb" title="Timeout value.">osWaitForever</a>); <span class="comment">// Allocate memory</span></div> +<div class="line"> mptr->voltage = 227.23; <span class="comment">// Prepare 2nd mail</span></div> +<div class="line"> mptr->current = 12.41;</div> +<div class="line"> mptr->counter = 170823;</div> +<div class="line"> <a class="code" href="group___c_m_s_i_s___r_t_o_s___mail.html#ga485ef6f81854ebda8ffbce4832181e02" title="Put a mail to a queue.">osMailPut</a>(mail, mptr); <span class="comment">// Send Mail</span></div> +<div class="line"> <a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gaf13a667493c5d629a90c13e113b99233" title="Pass control to next thread that is in state READY.">osThreadYield</a>(); <span class="comment">// Cooperative multitasking</span></div> +<div class="line"> <span class="comment">// We are done here, exit this thread</span></div> +<div class="line">}</div> +<div class="line"> </div> +<div class="line"><span class="comment">//</span></div> +<div class="line"><span class="comment">// Thread 2: Receive thread</span></div> +<div class="line"><span class="comment">//</span></div> +<div class="line"><span class="keywordtype">void</span> recv_thread (<span class="keywordtype">void</span> <span class="keyword">const</span> *argument) {</div> +<div class="line"> T_MEAS *rptr;</div> +<div class="line"> <a class="code" href="group___c_m_s_i_s___r_t_o_s___definitions.html#structos_event" title="Event structure contains detailed information about an event.">osEvent</a> evt;</div> +<div class="line"> </div> +<div class="line"> <span class="keywordflow">for</span> (;;) {</div> +<div class="line"> evt = <a class="code" href="group___c_m_s_i_s___r_t_o_s___mail.html#gac6ad7e6e7d6c4a80e60da22c57a42ccd" title="Get a mail from a queue.">osMailGet</a>(mail, <a class="code" href="cmsis__os_8h.html#a9eb9a7a797a42e4b55eb171ecc609ddb" title="Timeout value.">osWaitForever</a>); <span class="comment">// wait for mail</span></div> +<div class="line"> <span class="keywordflow">if</span> (evt.<a class="code" href="group___c_m_s_i_s___r_t_o_s___definitions.html#ad477a289f1f03ac45407b64268d707d3" title="status code: event or error information">status</a> == <a class="code" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99ea15b12e42b42b53f35fb8a2724ad02926" title="function completed; mail event occurred.">osEventMail</a>) {</div> +<div class="line"> rptr = evt.<a class="code" href="group___c_m_s_i_s___r_t_o_s___definitions.html#a0b9f8fd3645f01d8cb09cae82add2d7f" title="event value">value</a>.<a class="code" href="group___c_m_s_i_s___r_t_o_s___definitions.html#a117104b82864d3b23ec174af6d392709" title="message or mail as void pointer">p</a>;</div> +<div class="line"> printf (<span class="stringliteral">"\nVoltage: %.2f V\n"</span>, rptr->voltage);</div> +<div class="line"> printf (<span class="stringliteral">"Current: %.2f A\n"</span>, rptr->current);</div> +<div class="line"> printf (<span class="stringliteral">"Number of cycles: %d\n"</span>, rptr->counter);</div> +<div class="line"> <a class="code" href="group___c_m_s_i_s___r_t_o_s___mail.html#ga27c1060cf21393f96b4fd1ed1c0167cc" title="Free a memory block from a mail.">osMailFree</a>(mail, rptr); <span class="comment">// free memory allocated for mail</span></div> +<div class="line"> }</div> +<div class="line"> }</div> +<div class="line">}</div> +<div class="line"> </div> +<div class="line"><span class="keywordtype">void</span> StartApplication (<span class="keywordtype">void</span>) {</div> +<div class="line"> mail = <a class="code" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174" title="Create and Initialize mail queue.">osMailCreate</a>(<a class="code" href="group___c_m_s_i_s___r_t_o_s___mail.html#gad2deeb66d51ade54e63d8f87ff2ec9d2" title="Access a Mail Queue Definition.">osMailQ</a>(mail), NULL); <span class="comment">// create mail queue</span></div> +<div class="line"> </div> +<div class="line"> tid_thread1 = <a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gac59b5713cb083702dce759c73fd90dff" title="Create a thread and add it to Active Threads and set it to state READY.">osThreadCreate</a>(<a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gaf0c7c6b5e09f8be198312144b5c9e453" title="Access a Thread definition.">osThread</a>(send_thread), NULL);</div> +<div class="line"> tid_thread2 = <a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gac59b5713cb083702dce759c73fd90dff" title="Create a thread and add it to Active Threads and set it to state READY.">osThreadCreate</a>(<a class="code" href="group___c_m_s_i_s___r_t_o_s___thread_mgmt.html#gaf0c7c6b5e09f8be198312144b5c9e453" title="Access a Thread definition.">osThread</a>(recv_thread), NULL);</div> +<div class="line"> :</div> +<div class="line">}</div> +</div><!-- fragment --> +</div> +</div> +<a class="anchor" id="ga27c1060cf21393f96b4fd1ed1c0167cc"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname"><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> osMailFree </td> + <td>(</td> + <td class="paramtype"><a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> </td> + <td class="paramname"><em>queue_id</em>, </td> + </tr> + <tr> + <td class="paramkey"></td> + <td></td> + <td class="paramtype">void * </td> + <td class="paramname"><em>mail</em> </td> + </tr> + <tr> + <td></td> + <td>)</td> + <td></td><td></td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="params"><dt>Parameters</dt><dd> + <table class="params"> + <tr><td class="paramdir">[in]</td><td class="paramname">queue_id</td><td>mail queue ID obtained with <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a>. </td></tr> + <tr><td class="paramdir">[in]</td><td class="paramname">mail</td><td>pointer to the memory block that was obtained with <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gac6ad7e6e7d6c4a80e60da22c57a42ccd">osMailGet</a>. </td></tr> + </table> + </dd> +</dl> +<dl class="section return"><dt>Returns</dt><dd>status code that indicates the execution status of the function.</dd></dl> +<p>Free the memory block specified by <em>mail</em> and return it to the mail queue.</p> +<p><b><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html">Status and Error Codes</a></b><br/> +</p> +<ul> +<li><em>osOK:</em> the <em>mail</em> block is released.</li> +<li><em>osErrorValue:</em> <em>mail</em> block does not belong to the mail queue pool.</li> +<li><em>osErrorParameter:</em> the value to the parameter <em>queue_id</em> is incorrect.</li> +</ul> +<dl class="section note"><dt>Note</dt><dd><a class="el" href="_function_overview.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a> can call this function. </dd></dl> + +</div> +</div> +<a class="anchor" id="gac6ad7e6e7d6c4a80e60da22c57a42ccd"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname"><a class="el" href="group___c_m_s_i_s___r_t_o_s___definitions.html#structos_event">osEvent</a> osMailGet </td> + <td>(</td> + <td class="paramtype"><a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> </td> + <td class="paramname"><em>queue_id</em>, </td> + </tr> + <tr> + <td class="paramkey"></td> + <td></td> + <td class="paramtype">uint32_t </td> + <td class="paramname"><em>millisec</em> </td> + </tr> + <tr> + <td></td> + <td>)</td> + <td></td><td></td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="params"><dt>Parameters</dt><dd> + <table class="params"> + <tr><td class="paramdir">[in]</td><td class="paramname">queue_id</td><td>mail queue ID obtained with <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a>. </td></tr> + <tr><td class="paramdir">[in]</td><td class="paramname">millisec</td><td><a class="el" href="_function_overview.html#CMSIS_RTOS_TimeOutValue">Timout Value</a> or 0 in case of no time-out </td></tr> + </table> + </dd> +</dl> +<dl class="section return"><dt>Returns</dt><dd>event that contains mail information or error code.</dd></dl> +<p>Suspend the execution of the current <b>RUNNING</b> thread until a mail arrives. When a mail is already in the queue, the function returns instantly with the mail information.</p> +<p>The argument <em>millisec</em> specifies how long the system waits for a mail to arrive. While the system waits the thread that is calling this function is put into the state <b>WAITING</b>. The <em>millisec</em> timeout can have the following values:</p> +<ul> +<li>when <em>millisec</em> is 0, the function returns instantly.</li> +<li>when <em>millisec</em> is set to <b>osWaitForever</b> the function will wait for an infinite time until a mail arrives.</li> +<li>all other values specify a time in millisecond for a timeout.</li> +</ul> +<dl class="section note"><dt>Note</dt><dd>The parameter <em>millisec</em> must be 0 for using this function in an ISR.</dd></dl> +<p><b><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html">Status and Error Codes</a></b><br/> +</p> +<ul> +<li><em>osOK:</em> no mail is available in the queue and no timeout was specified</li> +<li><em>osEventTimeout:</em> no mail has arrived during the given timeout period.</li> +<li><em>osEventMail:</em> mail received, <em>value.p</em> contains the pointer to mail content.</li> +<li><em>osErrorParameter:</em> a parameter is invalid or outside of a permitted range.</li> +</ul> +<dl class="section note"><dt>Note</dt><dd><a class="el" href="_function_overview.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a> can call this function. </dd></dl> + +</div> +</div> +<a class="anchor" id="ga485ef6f81854ebda8ffbce4832181e02"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname"><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html#gae2e091fefc4c767117727bd5aba4d99e">osStatus</a> osMailPut </td> + <td>(</td> + <td class="paramtype"><a class="el" href="cmsis__os_8h.html#a1dac049fb7725a8af8b26c71cbb373b5">osMailQId</a> </td> + <td class="paramname"><em>queue_id</em>, </td> + </tr> + <tr> + <td class="paramkey"></td> + <td></td> + <td class="paramtype">void * </td> + <td class="paramname"><em>mail</em> </td> + </tr> + <tr> + <td></td> + <td>)</td> + <td></td><td></td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="params"><dt>Parameters</dt><dd> + <table class="params"> + <tr><td class="paramdir">[in]</td><td class="paramname">queue_id</td><td>mail queue ID obtained with <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gaa177e7fe5820dd70d8c9e46ded131174">osMailCreate</a>. </td></tr> + <tr><td class="paramdir">[in]</td><td class="paramname">mail</td><td>memory block previously allocated with <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#gadf5ce811bd6a56e617e902a1db6c2194">osMailAlloc</a> or <a class="el" href="group___c_m_s_i_s___r_t_o_s___mail.html#ga8fde74f6fe5b9e88f75cc5eb8f2124fd">osMailCAlloc</a>. </td></tr> + </table> + </dd> +</dl> +<dl class="section return"><dt>Returns</dt><dd>status code that indicates the execution status of the function.</dd></dl> +<p>Put the memory block specified with <em>mail</em> into the mail queue specified by <em>queue</em>.</p> +<p><b><a class="el" href="group___c_m_s_i_s___r_t_o_s___status.html">Status and Error Codes</a></b><br/> +</p> +<ul> +<li><em>osOK:</em> the message is put into the queue.</li> +<li><em>osErrorValue:</em> <em>mail</em> was previously not allocated as memory slot.</li> +<li><em>osErrorParameter:</em> a parameter is invalid or outside of a permitted range.</li> +</ul> +<dl class="section note"><dt>Note</dt><dd><a class="el" href="_function_overview.html#CMSIS_RTOS_ISR_Calls">Interrupt Service Routines</a> can call this function. </dd></dl> + +</div> +</div> +</div><!-- contents --> +</div><!-- doc-content --> +<!-- start footer part --> +<div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> + <ul> + <li class="footer">Generated on Tue Oct 27 2015 14:35:45 for CMSIS-RTOS RTX by ARM Ltd. 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