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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>AVR106 - C Functions for Reading and Writing to Flash Memory: Self_programming.c Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.5 --><div class="tabs"> <ul> <li><a href="main.html"><span>Main Page</span></a></li> <li id="current"><a href="files.html"><span>Files</span></a></li> </ul></div><div class="tabs"> <ul> <li><a href="files.html"><span>File List</span></a></li> <li><a href="globals.html"><span>Globals</span></a></li> </ul></div><h1>Self_programming.c</h1><a href="Self__programming_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// This file has been prepared for Doxygen automatic documentation generation.</span><a name="l00033"></a>00033 <span class="comment"></span><span class="preprocessor">#include <ioavr.h></span><a name="l00034"></a>00034 <span class="preprocessor">#include <inavr.h></span><a name="l00035"></a>00035 <span class="preprocessor">#include "<a class="code" href="Self__programming_8h.html">Self_programming.h</a>"</span><a name="l00036"></a>00036 <a name="l00043"></a>00043 <span class="preprocessor">#ifdef __FLASH_RECOVER</span><a name="l00044"></a>00044 <span class="preprocessor"></span>__eeprom <span class="keyword">struct </span>{<a name="l00045"></a><a class="code" href="Self__programming_8c.html#37762d11479e633bc60b4d306ebffa55">00045</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="Self__programming_8c.html#37762d11479e633bc60b4d306ebffa55">pageNumber</a>;<a name="l00046"></a><a class="code" href="Self__programming_8c.html#9acb44549b41563697bb490144ec6258">00046</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="Self__programming_8c.html#9acb44549b41563697bb490144ec6258">status</a>;<a name="l00047"></a>00047 }<a class="code" href="Self__programming_8c.html#e43874319c89f039d4c684ca71e3cc89">FlashBackup</a> = {0};<a name="l00048"></a>00048 <span class="preprocessor">#endif</span><a name="l00049"></a>00049 <span class="preprocessor"></span><a name="l00053"></a><a class="code" href="Self__programming_8h.html#d115e127ecf9b9b686dc55a1e1e39e2c">00053</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="Self__programming_8c.html#1d6ded0de0674f00a82507424c862431">ReadFlashByte</a>(<a class="code" href="Self__programming_8h.html#b6f1b2644de7b0bfdbda193929167b4a">MyAddressType</a> flashStartAdr){<a name="l00054"></a>00054 <span class="preprocessor">#pragma diag_suppress=Pe1053 // Suppress warning for conversion from long-type address to flash ptr.</span><a name="l00055"></a>00055 <span class="preprocessor"></span> <span class="keywordflow">return</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>)*((<a class="code" href="Self__programming_8h.html#2fcb8b22c8cdb1abe50824d192e43170">MyFlashCharPointer</a>)flashStartAdr);<a name="l00056"></a>00056 <span class="preprocessor">#pragma diag_default=Pe1053 // Back to default.</span><a name="l00057"></a>00057 <span class="preprocessor"></span>} <span class="comment">// Returns data from Flash</span><a name="l00058"></a>00058 <a name="l00065"></a><a class="code" href="Self__programming_8h.html#8b290614a2b685c107c6eed5a9db96d4">00065</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="Self__programming_8c.html#8b290614a2b685c107c6eed5a9db96d4">ReadFlashPage</a>(<a class="code" href="Self__programming_8h.html#b6f1b2644de7b0bfdbda193929167b4a">MyAddressType</a> flashStartAdr, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *dataPage){<a name="l00066"></a>00066 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> index;<a name="l00067"></a>00067 <span class="keywordflow">if</span>(!(flashStartAdr & (PAGESIZE-1))){ <span class="comment">// If input address is a page address</span><a name="l00068"></a>00068 <span class="keywordflow">for</span>(index = 0; index < PAGESIZE; index++){<a name="l00069"></a>00069 dataPage[index] = <a class="code" href="Self__programming_8c.html#1d6ded0de0674f00a82507424c862431">ReadFlashByte</a>(flashStartAdr + index);<a name="l00070"></a>00070 }<a name="l00071"></a>00071 <span class="keywordflow">return</span> <a class="code" href="Self__programming_8h.html#c0d83f0b82a6b30de8811e69e6d95c61">TRUE</a>; <span class="comment">// Return TRUE if valid page address</span><a name="l00072"></a>00072 }<a name="l00073"></a>00073 <span class="keywordflow">else</span>{<a name="l00074"></a>00074 <span class="keywordflow">return</span> <a class="code" href="Self__programming_8h.html#946003f97ccc52d5d3b54ac0ec31bbfc">FALSE</a>; <span class="comment">// Return FALSE if not valid page address</span><a name="l00075"></a>00075 }<a name="l00076"></a>00076 }<a name="l00077"></a>00077 <a name="l00082"></a><a class="code" href="Self__programming_8h.html#37868fe819d4b22e28890f3c0d3797fa">00082</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="Self__programming_8c.html#37868fe819d4b22e28890f3c0d3797fa">WriteFlashByte</a>(<a class="code" href="Self__programming_8h.html#b6f1b2644de7b0bfdbda193929167b4a">MyAddressType</a> flashAddr, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> data){<a name="l00083"></a>00083 <a class="code" href="Self__programming_8h.html#b6f1b2644de7b0bfdbda193929167b4a">MyAddressType</a> pageAdr;<a name="l00084"></a>00084 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> eepromInterruptSettings;<a name="l00085"></a>00085 <span class="keywordflow">if</span>( <a class="code" href="Self__programming_8c.html#968efe3412fbf2252905db9c760c6aff">AddressCheck</a>( flashAddr & ~(PAGESIZE-1) )){<a name="l00086"></a>00086 <a name="l00087"></a>00087 eepromInterruptSettings= EECR & (1<<EERIE); <span class="comment">// Stores EEPROM interrupt mask</span><a name="l00088"></a>00088 EECR &= ~(1<<EERIE); <span class="comment">// Disable EEPROM interrupt</span><a name="l00089"></a>00089 <span class="keywordflow">while</span>(EECR & (1<<EEWE)); <span class="comment">// Wait if ongoing EEPROM write</span><a name="l00090"></a>00090 <a name="l00091"></a>00091 pageAdr=flashAddr & ~(PAGESIZE-1); <span class="comment">// Gets Flash page address from byte address</span><a name="l00092"></a>00092 <a name="l00093"></a>00093 #ifdef <a class="code" href="Self__programming_8h.html#d0d1a75143c5082aa629ae78c02cb71f">__FLASH_RECOVER</a><a name="l00094"></a>00094 <a class="code" href="Self__programming_8c.html#e43874319c89f039d4c684ca71e3cc89">FlashBackup</a>.status=0; <span class="comment">// Inicate that Flash buffer does</span><a name="l00095"></a>00095 <span class="comment">// not contain data for writing</span><a name="l00096"></a>00096 <span class="keywordflow">while</span>(EECR & (1<<EEWE));<a name="l00097"></a>00097 <a class="code" href="Self__programming_8c.html#6c0d2f39df7714f493c214ed2ec42493">LpmReplaceSpm</a>(flashAddr, data); <span class="comment">// Fills Flash write buffer</span><a name="l00098"></a>00098 <a class="code" href="Self__programming_8c.html#d29e91755e1d3695b74c15e89019db39">WriteBufToFlash</a>(<a class="code" href="Self__programming_8h.html#7344bf2129730480f9e46fb7f2cb1ceb">ADR_FLASH_BUFFER</a>); <span class="comment">// Writes to Flash recovery buffer</span><a name="l00099"></a>00099 <a class="code" href="Self__programming_8c.html#e43874319c89f039d4c684ca71e3cc89">FlashBackup</a>.pageNumber = (<span class="keywordtype">unsigned</span> int) (pageAdr/PAGESIZE); <span class="comment">// Stores page address</span><a name="l00100"></a>00100 <span class="comment">// data should be written to</span><a name="l00101"></a>00101 <a class="code" href="Self__programming_8c.html#e43874319c89f039d4c684ca71e3cc89">FlashBackup</a>.status = <a class="code" href="Self__programming_8h.html#d1d89ef93c516c3d36de362a540a082e">FLASH_BUFFER_FULL_ID</a>; <span class="comment">// Indicates that Flash recovery buffer</span><a name="l00102"></a>00102 <span class="comment">// contains unwritten data</span><a name="l00103"></a>00103 <span class="keywordflow">while</span>(EECR & (1<<EEWE));<a name="l00104"></a>00104 <span class="preprocessor"> #endif</span><a name="l00105"></a>00105 <span class="preprocessor"></span><a name="l00106"></a>00106 <a class="code" href="Self__programming_8c.html#6c0d2f39df7714f493c214ed2ec42493">LpmReplaceSpm</a>(flashAddr, data); <span class="comment">// Fills Flash write buffer</span><a name="l00107"></a>00107 <a class="code" href="Self__programming_8c.html#d29e91755e1d3695b74c15e89019db39">WriteBufToFlash</a>(pageAdr); <span class="comment">// Writes to Flash</span><a name="l00108"></a>00108 <a name="l00109"></a>00109 <span class="preprocessor"> #ifdef __FLASH_RECOVER</span><a name="l00110"></a>00110 <span class="preprocessor"></span> <a class="code" href="Self__programming_8c.html#e43874319c89f039d4c684ca71e3cc89">FlashBackup</a>.status = 0; <span class="comment">// Indicates that Flash recovery buffer</span><a name="l00111"></a>00111 <span class="comment">// does not contain unwritten data</span><a name="l00112"></a>00112 <span class="keywordflow">while</span>(EECR & (1<<EEWE));<a name="l00113"></a>00113 <span class="preprocessor"> #endif</span><a name="l00114"></a>00114 <span class="preprocessor"></span><a name="l00115"></a>00115 EECR |= eepromInterruptSettings; <span class="comment">// Restore EEPROM interrupt mask</span><a name="l00116"></a>00116 <span class="keywordflow">return</span> <a class="code" href="Self__programming_8h.html#c0d83f0b82a6b30de8811e69e6d95c61">TRUE</a>; <span class="comment">// Return TRUE if address</span><a name="l00117"></a>00117 <span class="comment">// valid for writing</span><a name="l00118"></a>00118 }<a name="l00119"></a>00119 <span class="keywordflow">else</span><a name="l00120"></a>00120 <span class="keywordflow">return</span> <a class="code" href="Self__programming_8h.html#946003f97ccc52d5d3b54ac0ec31bbfc">FALSE</a>; <span class="comment">// Return FALSE if address not</span><a name="l00121"></a>00121 <span class="comment">// valid for writing</span><a name="l00122"></a>00122 }<a name="l00123"></a>00123 <a name="l00130"></a><a class="code" href="Self__programming_8h.html#fc13c9dcc9565c691d73a8e35ea3c3b0">00130</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <a class="code" href="Self__programming_8c.html#fc13c9dcc9565c691d73a8e35ea3c3b0">WriteFlashPage</a>(<a class="code" href="Self__programming_8h.html#b6f1b2644de7b0bfdbda193929167b4a">MyAddressType</a> flashStartAdr, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *dataPage)<a name="l00131"></a>00131 {<a name="l00132"></a>00132 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> index;<a name="l00133"></a>00133 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> eepromInterruptSettings;<a name="l00134"></a>00134 <span class="keywordflow">if</span>( <a class="code" href="Self__programming_8c.html#968efe3412fbf2252905db9c760c6aff">AddressCheck</a>(flashStartAdr) ){<a name="l00135"></a>00135 eepromInterruptSettings = EECR & (1<<EERIE); <span class="comment">// Stoes EEPROM interrupt mask</span><a name="l00136"></a>00136 EECR &= ~(1<<EERIE); <span class="comment">// Disable EEPROM interrupt</span><a name="l00137"></a>00137 <span class="keywordflow">while</span>(EECR & (1<<EEWE)); <span class="comment">// Wait if ongoing EEPROM write</span><a name="l00138"></a>00138 <a name="l00139"></a>00139 <span class="preprocessor"> #ifdef __FLASH_RECOVER</span><a name="l00140"></a>00140 <span class="preprocessor"></span> <a class="code" href="Self__programming_8c.html#e43874319c89f039d4c684ca71e3cc89">FlashBackup</a>.status=0; <span class="comment">// Inicate that Flash buffer does</span><a name="l00141"></a>00141 <span class="comment">// not contain data for writing</span><a name="l00142"></a>00142 <span class="keywordflow">while</span>(EECR & (1<<EEWE));<a name="l00143"></a>00143 <span class="keywordflow">for</span>(index = 0; index < PAGESIZE; index+=2){ <span class="comment">// Fills Flash write buffer</span><a name="l00144"></a>00144 _SPM_FILLTEMP(index, (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>)dataPage[index]+((<span class="keywordtype">unsigned</span> int)dataPage[index+1] << 8));<a name="l00145"></a>00145 }⌨️ 快捷键说明
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