1e6865dcdSopenharmony_ci<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 2e6865dcdSopenharmony_ci<html lang="en"> 3e6865dcdSopenharmony_ci<head> 4e6865dcdSopenharmony_ci<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 5e6865dcdSopenharmony_ci<meta http-equiv="Content-Style-Type" content="text/css"> 6e6865dcdSopenharmony_ci<link rel="up" title="FatFs" href="../00index_e.html"> 7e6865dcdSopenharmony_ci<link rel="alternate" hreflang="ja" title="Japanese" href="../ja/fattime.html"> 8e6865dcdSopenharmony_ci<link rel="stylesheet" href="../css_e.css" type="text/css" media="screen" title="ELM Default"> 9e6865dcdSopenharmony_ci<title>FatFs - get_fattime</title> 10e6865dcdSopenharmony_ci</head> 11e6865dcdSopenharmony_ci 12e6865dcdSopenharmony_ci<body> 13e6865dcdSopenharmony_ci 14e6865dcdSopenharmony_ci<div class="para func"> 15e6865dcdSopenharmony_ci<h2>get_fattime</h2> 16e6865dcdSopenharmony_ci<p>The get_fattime function is called to get the current time.</p> 17e6865dcdSopenharmony_ci<pre> 18e6865dcdSopenharmony_ciDWORD get_fattime (void); 19e6865dcdSopenharmony_ci</pre> 20e6865dcdSopenharmony_ci</div> 21e6865dcdSopenharmony_ci 22e6865dcdSopenharmony_ci 23e6865dcdSopenharmony_ci<div class="para ret"> 24e6865dcdSopenharmony_ci<h4>Return Value</h4> 25e6865dcdSopenharmony_ci<p>Currnet local time shall be returned as bit-fields packed into a <tt>DWORD</tt> value. The bit fields are as follows:</p> 26e6865dcdSopenharmony_ci<dl class="ret"> 27e6865dcdSopenharmony_ci<dt>bit31:25</dt> 28e6865dcdSopenharmony_ci<dd>Year origin from the 1980 (0..127, e.g. 37 for 2017)</dd> 29e6865dcdSopenharmony_ci<dt>bit24:21</dt> 30e6865dcdSopenharmony_ci<dd>Month (1..12)</dd> 31e6865dcdSopenharmony_ci<dt>bit20:16</dt> 32e6865dcdSopenharmony_ci<dd>Day of the month (1..31)</dd> 33e6865dcdSopenharmony_ci<dt>bit15:11</dt> 34e6865dcdSopenharmony_ci<dd>Hour (0..23)</dd> 35e6865dcdSopenharmony_ci<dt>bit10:5</dt> 36e6865dcdSopenharmony_ci<dd>Minute (0..59)</dd> 37e6865dcdSopenharmony_ci<dt>bit4:0</dt> 38e6865dcdSopenharmony_ci<dd>Second / 2 (0..29, e.g. 25 for 50)</dd> 39e6865dcdSopenharmony_ci</dl> 40e6865dcdSopenharmony_ci</div> 41e6865dcdSopenharmony_ci 42e6865dcdSopenharmony_ci 43e6865dcdSopenharmony_ci<div class="para desc"> 44e6865dcdSopenharmony_ci<h4>Description</h4> 45e6865dcdSopenharmony_ci<p>The <tt>get_fattime</tt> function shall return any valid time even if the system does not support a real time clock. If a zero is returned, the file will not have a valid timestamp.</p> 46e6865dcdSopenharmony_ci</div> 47e6865dcdSopenharmony_ci 48e6865dcdSopenharmony_ci 49e6865dcdSopenharmony_ci<div class="para comp"> 50e6865dcdSopenharmony_ci<h4>QuickInfo</h4> 51e6865dcdSopenharmony_ci<p>This function is not needed when <tt><a href="config.html#fs_readonly">FF_FS_READONLY</a> == 1</tt> or <tt><a href="config.html#fs_nortc">FF_FS_NORTC</a> == 1</tt>.</p> 52e6865dcdSopenharmony_ci</div> 53e6865dcdSopenharmony_ci 54e6865dcdSopenharmony_ci 55e6865dcdSopenharmony_ci<div class="para use"> 56e6865dcdSopenharmony_ci<h4>Example</h4> 57e6865dcdSopenharmony_ci<pre> 58e6865dcdSopenharmony_ciDWORD get_fattime (void) 59e6865dcdSopenharmony_ci{ 60e6865dcdSopenharmony_ci time_t t; 61e6865dcdSopenharmony_ci struct tm *stm; 62e6865dcdSopenharmony_ci 63e6865dcdSopenharmony_ci 64e6865dcdSopenharmony_ci t = time(0); 65e6865dcdSopenharmony_ci stm = localtime(&t); 66e6865dcdSopenharmony_ci 67e6865dcdSopenharmony_ci return (DWORD)(stm->tm_year - 80) << 25 | 68e6865dcdSopenharmony_ci (DWORD)(stm->tm_mon + 1) << 21 | 69e6865dcdSopenharmony_ci (DWORD)stm->tm_mday << 16 | 70e6865dcdSopenharmony_ci (DWORD)stm->tm_hour << 11 | 71e6865dcdSopenharmony_ci (DWORD)stm->tm_min << 5 | 72e6865dcdSopenharmony_ci (DWORD)stm->tm_sec >> 1; 73e6865dcdSopenharmony_ci} 74e6865dcdSopenharmony_ci</pre> 75e6865dcdSopenharmony_ci</div> 76e6865dcdSopenharmony_ci 77e6865dcdSopenharmony_ci 78e6865dcdSopenharmony_ci<p class="foot"><a href="../00index_e.html">Return</a></p> 79e6865dcdSopenharmony_ci</body> 80e6865dcdSopenharmony_ci</html> 81