00001 <?php
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00046 $address="";
00047 $data="";
00048 foreach($_GET as $key=>$value) {
00049 switch($key) {
00050 case "a":
00051 case "adr":
00052 $address=$value+0;
00053 break;
00054 case "a4":
00055 case "adr4":
00056 $address=$value+0x2000;
00057 break;
00058 case "d":
00059 case "data":
00060 $sdata=$value;
00061 $data=$value+0;
00062
00063 if ((strtoupper(substr($sdata,0,2))=="0X") && (strlen($sdata)==10)) {
00064 $data1=substr($sdata,0,6)+0;
00065 if ($data1>=32768) $data1-=65536;
00066 $data=$data1*65536+("0x".substr($sdata,6,4));
00067 }
00068 break;
00069 }
00070 }
00071 if ($address=="") {
00072 echo <<<USAGE
00073 <p>This read/writes fpga registers. Use with extreme care.</p>
00074 <ul>
00075 <li><b>fpga.php?a=<i>register_address</i></b> - read FPGA register <i>register_address</i></li>
00076 <li><b>fpga.php?a=<i>register_address</i>&d=<i>data</i></b> - write <i>data</i> to FPGA register <i>register_address</i></li>
00077 <li><b>fpga.php?a4=<i>register_address</i></b> - read FPGA register <i>register_address</i> (csp4)</li>
00078 </ul>
00079 <p><i>Note: only reading autoincrementing registers requires csp4 mode</i></p>
00080 USAGE;
00081 exit (0);
00082 }
00083 $xml = new SimpleXMLElement("<?xml version='1.0'?><fpga/>");
00084 $xml->addChild ('address',($address>=0x2000)?($address-0x2000):$address);
00085 $xml->addChild ('hex_address',sprintf("0x%x",($address>=0x2000)?($address-0x2000):$address));
00086 if ($data==="") {
00087 $data=elphel_fpga_read($address);
00088 $xml->addChild ('read',$data);
00089 $xml->addChild ('hex_read',sprintf("0x%x",$data));
00090 } else {
00091 elphel_fpga_write($address,$data);
00092 $xml->addChild ('written',$data);
00093 $xml->addChild ('hex_written',sprintf("0x%x",$data));
00094 }
00095 $rslt=$xml->asXML();
00096 header("Content-Type: text/xml");
00097 header("Content-Length: ".strlen($rslt)."\n");
00098 header("Pragma: no-cache\n");
00099 printf($rslt);
00100 ?>