utils/freq.c
changeset 0 10c42ec6c05f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/utils/freq.c	Tue Jun 29 12:34:26 2010 +0100
@@ -0,0 +1,130 @@
+/*
+ * freq.c
+ *
+ * Copyright(c) 1998 - 2010 Texas Instruments. All rights reserved.      
+ * All rights reserved.      
+ * 
+ * This program and the accompanying materials are made available under the 
+ * terms of the Eclipse Public License v1.0 or BSD License which accompanies
+ * this distribution. The Eclipse Public License is available at
+ * http://www.eclipse.org/legal/epl-v10.html and the BSD License is as below.                                   
+ *                                                                       
+ * Redistribution and use in source and binary forms, with or without    
+ * modification, are permitted provided that the following conditions    
+ * are met:                                                              
+ *                                                                       
+ *  * Redistributions of source code must retain the above copyright     
+ *    notice, this list of conditions and the following disclaimer.      
+ *  * Redistributions in binary form must reproduce the above copyright  
+ *    notice, this list of conditions and the following disclaimer in    
+ *    the documentation and/or other materials provided with the         
+ *    distribution.                                                      
+ *  * Neither the name Texas Instruments nor the names of its            
+ *    contributors may be used to endorse or promote products derived    
+ *    from this software without specific prior written permission.      
+ *                                                                       
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT     
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT  
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT      
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT   
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** \file  freq.c
+ *  \brief frequency to channel (and vice versa) conversion implementation
+ *
+ *  \see   freq.h
+ */
+
+
+#define __FILE_ID__								FILE_ID_126
+#include "osTIType.h"
+
+#define     CHAN_FREQ_TABLE_SIZE        (sizeof(ChanFreq) / sizeof(CHAN_FREQ))
+
+typedef struct {
+    TI_UINT8       chan;
+    TI_UINT32      freq;
+} CHAN_FREQ;
+
+static CHAN_FREQ ChanFreq[] = {
+    {1,  2412000},
+    {2,  2417000},
+    {3,  2422000},
+    {4,  2427000},
+    {5,  2432000},
+    {6,  2437000},
+    {7,  2442000},
+    {8,  2447000},
+    {9,  2452000},
+    {10, 2457000},
+    {11, 2462000},
+    {12, 2467000},
+    {13, 2472000}, 
+    {14, 2484000}, 
+    {34, 5170000},
+    {36, 5180000},
+    {38, 5190000},
+    {40, 5200000},
+    {42, 5210000},
+    {44, 5220000},
+    {46, 5230000}, 
+    {48, 5240000},
+    {52, 5260000},
+    {56, 5280000},
+    {60, 5300000},
+    {64, 5320000},
+    {100,5500000},
+    {104,5520000},
+    {108,5540000},
+    {112,5560000},
+    {116,5580000},
+    {120,5600000},
+    {124,5620000},
+    {128,5640000},
+    {132,5660000},
+    {136,5680000},
+    {140,5700000},
+    {149,5745000},
+    {153,5765000},
+    {157,5785000},
+    {161,5805000}
+  };
+
+TI_UINT8 Freq2Chan (TI_UINT32 freq)
+{
+    TI_UINT32   i;
+
+    for (i = 0; i < CHAN_FREQ_TABLE_SIZE; i++)
+    {
+        if (ChanFreq[ i ].freq == freq)
+        {
+            return ChanFreq[ i ].chan;
+        }
+    }
+
+    return 0;
+}
+
+
+TI_UINT32 Chan2Freq (TI_UINT8 chan)
+{
+    TI_UINT32   i;
+
+    for (i = 0; i < CHAN_FREQ_TABLE_SIZE; i++)
+    {
+        if (ChanFreq[ i ].chan == chan)
+        {
+            return ChanFreq[ i ].freq;
+        }
+    }
+
+    return 0;
+}
+