html/ampy.php

   1 <?php
   2 /*
   3  * This file is not used!
   4  */
   5 $RRDFILE='/home/nirgal/ampy/power.rrd';
   6 $COUNTERFILE='/home/nirgal/ampy/counter';
   7
   8 function get_counter() {
   9         $fd = fopen($COUNTERFILE, 'r');
  10         $mtime = fstat($fd)['mtime'];
  11         $counter = (double)fread($fd, 128) * 1000;
  12         fclose($fd);
  13         #echo($mtime.'<br>');
  14         #echo('counter='.$counter.'<br>');
  15
  16         $info=rrd_graph( '-', ['-s', $mtime, 'DEF:watts='.$RRDFILE.':watts:AVERAGE', 'VDEF:avg=watts,AVERAGE', 'PRINT:avg:%lf']);
  17         #print_r($info);
  18         $watts_since_counter = (double)$info['calcpr'][0];
  19         #echo('watts_since_counter='.$watts_since_counter.'<br>');
  20         #echo('hours_since_counter='.((time() - $mtime) / 3600.).'<br>');
  21         $wh_since_counter = $watts_since_counter * (time() - $mtime) / 3600.;
  22         #echo('wh_since_counter='.$wh_since_counter.'<br>');
  23         $counter += $wh_since_counter;
  24         #echo('newcounter='.($counter/1000).' kWh<br>');
  25
  26         return $counter/1000.;
  27 }
  28 ?>