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/*
* Copyright (c) 2004-2005 Atheros Communications Inc.
* All rights reserved.
*
* This module implements frequently used wlan utilies
*
* $Id: //depot/sw/releases/olca2.0-GPL/host/wlan/src/wlan_utils.c#1 $
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
*
*
*/
#include <a_config.h>
#include <athdefs.h>
#include <a_types.h>
#include <a_osapi.h>
/*
* converts ieee channel number to frequency
*/
A_UINT16
wlan_ieee2freq(int chan)
{
if (chan == 14) {
return 2484;
}
if (chan < 14) { /* 0-13 */
return (2407 + (chan*5));
}
if (chan < 27) { /* 15-26 */
return (2512 + ((chan-15)*20));
}
return (5000 + (chan*5));
}
/*
* Converts MHz frequency to IEEE channel number.
*/
A_UINT32
wlan_freq2ieee(A_UINT16 freq)
{
if (freq == 2484)
return 14;
if (freq < 2484)
return (freq - 2407) / 5;
if (freq < 5000)
return 15 + ((freq - 2512) / 20);
return (freq - 5000) / 5;
}
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