1<!DOCTYPE HTML PUBLIC "-//W3C//Dtd HTML 4.01 Transitional//EN"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=windows-1252" /> 5<meta http-equiv="Content-Style-Type" content="text/css" /> 6<link rel="stylesheet" type="text/css" href="../CSS/rex.css" /> 7<title>WDCheckEnableChannel</title> 8</head> 9<body> 10 11<h1>WDCheckEnableChannel</h1> 12 13<h2>C Specification</h2> 14<dl> 15<dd><pre><code>#include <revolution/wd/WDScan.h></code></pre> 16 </dd> 17<dd><pre><code>WDError WDCheckEnableChannel( u16* <em>scanEnableChannel</em> );</code></pre> 18 </dd> 19</dl> 20 21<h2>Description</h2> 22<p>Checks for usable wireless channels.</p> 23 24<h2>Arguments</h2> 25<table border="1" cellpadding="3" cellspacing="0.1"> 26 <tr> 27 <TH><em>scanEnableChannel</em></TH> 28 <TD> 29 Specifies the pointer to the variable to get usable wireless channel information.<br>Usable wireless channels will be indicated as bit fields. The lowest bit is reserved, and the statuses are stored from channel 1 onward starting with the second-lowest bit. For example, <CODE>0x0ffe</CODE> would indicate that channels 1-11 are usable. 30 </TD> 31 </tr> 32</table> 33 34<h2>Return Values</h2> 35<table border="1" cellpadding="3" cellspacing="0.1"> 36 <tr> 37 <TH>WD_SUCCESS</TH> 38 <TD>Process was successful.</TD> 39 </tr> 40 <tr> 41 <TH>WD_ERR_FATAL</TH> 42 <TD>A fatal error occurred while running the firmware.</TD> 43 </tr> 44 <tr> 45 <TH>WD_ERR_ILLEGAL_STATUS</TH> 46 <TD>A call from the exception handler.</TD> 47 </tr> 48 <tr> 49 <TH>WD_ERR_INPROGRESS</TH> 50 <TD>The firmware was not ready.</TD> 51 </tr> 52 <tr> 53 <TH>WD_ERR_EXCLUSIVE</TH> 54 <TD>The process failed because the WD library is exclusively controlled.</TD> 55 </tr> 56</table> 57<P style="background-color:ffe8ff;padding-top:4px;padding-bottom:4px;padding-left:4px;padding-right:4px;"> 58 <strong>Note: </strong>Errors may be added as the library is updated. Treat all negative return values as all-purpose errors. 59</P> 60 61<h2>See Also</h2> 62<p> 63 <CODE><a href="WDScanOnce.html">WDScanOnce</a><br> <a href="WDTryUsbApRegistrationOnce.html">WDTryUsbApRegistrationOnce</a><br></CODE> 64</p> 65 66<h2>Revision History</h2> 67<p> 68 2006/11/09 Initial version.<br>2006/12/12 Added description.<br> 69</p> 70<hr><p>CONFIDENTIAL</p></body> 71</html> 72