1 /*
2 * freq.c
3 *
4 * Copyright(c) 1998 - 2009 Texas Instruments. All rights reserved.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * * Neither the name Texas Instruments nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /** \file freq.c
35 * \brief frequency to channel (and vice versa) conversion implementation
36 *
37 * \see freq.h
38 */
39
40
41 #define __FILE_ID__ FILE_ID_126
42 #include "osTIType.h"
43
44 #define CHAN_FREQ_TABLE_SIZE (sizeof(ChanFreq) / sizeof(CHAN_FREQ))
45
46 typedef struct {
47 TI_UINT8 chan;
48 TI_UINT32 freq;
49 } CHAN_FREQ;
50
51 static CHAN_FREQ ChanFreq[] = {
52 {1, 2412000},
53 {2, 2417000},
54 {3, 2422000},
55 {4, 2427000},
56 {5, 2432000},
57 {6, 2437000},
58 {7, 2442000},
59 {8, 2447000},
60 {9, 2452000},
61 {10, 2457000},
62 {11, 2462000},
63 {12, 2467000},
64 {13, 2472000},
65 {14, 2484000},
66 {34, 5170000},
67 {36, 5180000},
68 {38, 5190000},
69 {40, 5200000},
70 {42, 5210000},
71 {44, 5220000},
72 {46, 5230000},
73 {48, 5240000},
74 {52, 5260000},
75 {56, 5280000},
76 {60, 5300000},
77 {64, 5320000},
78 {100,5500000},
79 {104,5520000},
80 {108,5540000},
81 {112,5560000},
82 {116,5580000},
83 {120,5600000},
84 {124,5620000},
85 {128,5640000},
86 {132,5660000},
87 {136,5680000},
88 {140,5700000},
89 {149,5745000},
90 {153,5765000},
91 {157,5785000},
92 {161,5805000}
93 };
94
Freq2Chan(TI_UINT32 freq)95 TI_UINT8 Freq2Chan (TI_UINT32 freq)
96 {
97 TI_UINT32 i;
98
99 for (i = 0; i < CHAN_FREQ_TABLE_SIZE; i++)
100 {
101 if (ChanFreq[ i ].freq == freq)
102 {
103 return ChanFreq[ i ].chan;
104 }
105 }
106
107 return 0;
108 }
109
110
Chan2Freq(TI_UINT8 chan)111 TI_UINT32 Chan2Freq (TI_UINT8 chan)
112 {
113 TI_UINT32 i;
114
115 for (i = 0; i < CHAN_FREQ_TABLE_SIZE; i++)
116 {
117 if (ChanFreq[ i ].chan == chan)
118 {
119 return ChanFreq[ i ].freq;
120 }
121 }
122
123 return 0;
124 }
125
126