dtmftone.h

一个滤波器和一个音效处理程序 TI 的CCS 编译器编程。

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/***********************************************************************
**  File Name:    DTMFTone.h
**  Part Number:  TLV320AIC10/11EVM-SW-00103
************************************************************************
**  Copyright (c) Texas Instruments, Inc. 2000
************************************************************************
**
**  Release History:
**     Version      Date          Engr          Description
**      1.00     10-11-2000    Wendy X Fang   Original Release
**
************************************************************************
**
**  Function:
**      This is the head file of DTMF tone generator -- DTMFTone.c,
**      which defines all variables and sine tables used by DTMFTone.c.
**
***********************************************************************/

/***********************************************************************
**  Define Statements (McBSP0 Used for TX DTMF Tone)
***********************************************************************/
#define McBSP0_DRR2  (*(volatile unsigned int *)0x0020)
#define McBSP0_DRR1  (*(volatile unsigned int *)0x0021)
#define McBSP0_DXR2  (*(volatile unsigned int *)0x0022)
#define McBSP0_DXR1  (*(volatile unsigned int *)0x0023)

/***********************************************************************
**  Global Varaibles that are Used for DTMF Tone Generation (Analog Output)
***********************************************************************/
unsigned int  ToneCount = 0;        /* DTMF tone interval counter */
unsigned int  ToneIndex = 0;        /* index or number for a tone */
unsigned int  s697      = 0;        /* index for freuqncy=697 tone */
unsigned int  s770      = 0;        /* index for freuqncy=770 tone */
unsigned int  s852      = 0;        /* index for freuqncy=852 tone */
unsigned int  s941      = 0;        /* index for freuqncy=941 tone */
unsigned int  s1209     = 0;        /* index for freuqncy=1209 tone */
unsigned int  s1336     = 0;        /* index for freuqncy=1336 tone */
unsigned int  s1477     = 0;        /* index for freuqncy=1477 tone */

int           ToneWave  = 0;        /* DTMF tone */
int           ToneHi    = 0;        /* high frequency in a DTMF tone */ 
int           ToneLo    = 0;        /* low frequency in a DTMF tone  */

int    f1477[23] =
{     0,   6349,  10621,  11419,   8482,   2771,  -3847,  -9207,
 -11555, -10123,  -5381,   1122,   7258,  11012,  11177,   7678,
   1668,  -4887,  -9844, -11581,  -9530,  -4362,   2233 }; 
 
 int    f1336[23] =
{     0,   5803,  10045,  11585,  10008,   5740,     -7,  -5866,
 -10081, -11584,  -9972,  -5676,    146,   5928,  10117,  11583,
  9934,    5613,   -218,  -5991, -10152, -11582,  -9897 };

int    f1209[23] =
{     0,   5296,   9420,  11461,  10966,   8046,   3346,  -2095,
  -7072, -10484, -11578, -10110,  -6406,  -1285,   4120,   8614,
  11203,  11313,   8921,   4555,   -818,  -6010,  -9873 };

int    f941[23]  =
{     0,   4184,   7803,  10369,  11535,  11144,   9238,   6103,
   2135,  -2122,  -6092,  -9240, -11140, -11536, -10375,  -7814,
  -4197,     -1,   4172,   7793,  10363,  11534,  11148 };

int    f852[23]  =
{     0,   3804,   7186,   9772,  11273,  11525,  10498,   8307,
   5195,   1506,  -2349,  -5944,  -8880, -10830, -11580, -11046,
  -9286,  -6497,  -2987,    855,   4601,   7837,  10204 };
   
int    f770[23]  =
{     0,   3450,   6587,   9126,  10837,  11565,  11243,   9902,
   7661,   4726,   1362,  -2126,  -5421,  -8224, -10280, -11405,
 -11494, -10540,  -8630,  -5936,  -2704,    773,   4180 };
   
int    f697[23]  =
{     0,   3131,   6030,   8479,  10297,  11349,  11555,  10901,
   9436,   7268,   4559,   1511,  -1650,  -4688,  -7377,  -9517,
 -10949, -11564, -11320, -10232,  -8383,  -5909,  -2995 };

/***********************************************************************
**  End of File -- DTMFTone.h
***********************************************************************/