lc72130的应用C程序源代码

lc72130的应用C程序源代码
  收音头控制程序(LC72130)
  //------------------------------------------------------------------------
  /***************************************************
  // Tuner, VER 1.0
  //
  // COPYRIGHT (C) 2002, Enbia Technology Inc.
  // Target: 89C5X, PLL : LC72130/LC72130M
  // AUTHOR: STEVEN LUO
  //
  // Revision History:
  // 2000// - Original Version
  // 2001/4/3 - V2.0, ported to RTX51TNY
  //
  //------------------------------------------------------------------------
  #include &;reg51.h>
  #include <types.h>
  #include <intrins.h>
  #include <rtx51tny.h>
  #include "tuner_int.h"
  #include "dspenm.h"
  //---------------------------------------------------------------------------
  // Tuner_Initialize
  //---------------------------------------------------------------------------
  void Tuner_Initialize(void)?
  b_amstep = Read_EEPROM(EE_AMSTEP) & 0x01;
  band = Read_EEPROM(EE_BAND) & 0x01;
  cur_count[band] = Read_EEPROM(EE_CURCNT_LOW) + Read_EEPROM(EE_CURCNT_HIGH) * 0x100;
  Tuner_Set_Frequency_Int();
  dwPLL_Shadow_IN2 |= BO2_ON; // Unmute
  Write_LC72131(MODE_IN1, dwPLL_Shadow_IN1);
  Write_LC72131(MODE_IN2, dwPLL_Shadow_IN2);
  ?
  //---------------------------------------------------------------------------
  // Tuner_Shutdown
  //---------------------------------------------------------------------------
  void Tuner_Shutdown(BOOL bonoff){
  if (bonoff){
  Write_LC72131(MODE_IN1, (dwPLL_Shadow_IN1 & 0x0fffff) | PLL_OFF_REF);
  }
  else{
  Write_LC72131(MODE_IN1, dwPLL_Shadow_IN1);
  }
  }
  //---------------------------------------------------------------------------
  // Tuner_Set_AMStep
  //---------------------------------------------------------------------------
  BOOL Tuner_Set_AMStep(BYTE ctrl){
  if (ctrl != INQUIRE){
  b_amstep = ! b_amstep;
  Write_EEPROM(EE_AMSTEP, b_amstep);
  }
  return b_amstep;
  }
  //---------------------------------------------------------------------------
  // Tuner_Set_FMStep
  //---------------------------------------------------------------------------
  BOOL Tuner_Set_FMStep(BYTE ctrl){
  if (ctrl != INQUIRE){
  b_fmstep = ! b_fmstep;
  }
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  return b_fmstep;
  }
  //---------------------------------------------------------------------------
  // Tuner_Set_Band
  //---------------------------------------------------------------------------
  BYTE Tuner_Set_Band(BYTE ctrl, WORD *freq){
  if (ctrl != INQUIRE){
  Temp_Mute(1);
  if (band != BAND_AM) band = BAND_AM; else band = BAND_FM; // 0: am, 1: fm
  Write_EEPROM(EE_BAND, band);
  Tuner_Set_Frequency_Int();
  dwPLL_Shadow_IN2 |= BO2_ON; // Unmute
  Write_LC72131(MODE_IN1, dwPLL_Shadow_IN1);
  Write_LC72131(MODE_IN2, dwPLL_Shadow_IN2);
  Temp_Mute(0);
  }
  *freq = (Count_To_Freq());
  return band;
  }
  //---------------------------------------------------------------------------
  // Tuner_Set_Mono
  //---------------------------------------------------------------------------
  BOOL Tuner_Set_Mono(BYTE ctrl){
  if (ctrl != INQUIRE){
  Temp_Mute(1);
  bST_MONO = ! bST_MONO;
  dwPLL_Shadow_IN2 &= ~BO3_ON;
  if (bST_MONO) {dwPLL_Shadow_IN2 |= BO3_ON;} // Stereo
  // Write_LC72131(MODE_IN1, dwPLL_Shadow_IN1);
  Write_LC72131(MODE_IN2, dwPLL_Shadow_IN2);
  Temp_Mute(0);
  }
  return bST_MONO;
  }
  //---------------------------------------------------------------------------
  // Tuner_Save_Station
  //---------------------------------------------------------------------------
  void Tuner_Save_Station(BYTE station){
  BYTE ee_addr;
  if (station > MAX_PRESET_NUMBER) station = MAX_PRESET_NUMBER;
  ee_addr = EE_PRESET_BASE + band * (MAX_PRESET_NUMBER + 1) * 2 + station *2;
  Write_EEPROM(ee_addr, cur_count[band]/0x100); Write_EEPROM(ee_addr +1, cur_count[band]&0xff);
  }
  //---------------------------------------------------------------------------
  // Tuner_Restore_Station
  //---------------------------------------------------------------------------
  WORD Tuner_Restore_Station(BYTE station){
  BYTE ee_addr;
  Temp_Mute(1);
  if (station > MAX_PRESET_NUMBER) station = MAX_PRESET_NUMBER;
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  ee_addr = EE_PRESET_BASE + band * (MAX_PRESET_NUMBER + 1) * 2 + station *2;
  cur_count[band]= Read_EEPROM(ee_addr) * 0x100 + Read_EEPROM(ee_addr +1);
  Tuner_Set_Frequency_Int();
  dwPLL_Shadow_IN2 |= BO2_ON; // Unmute
  Write_LC72131(MODE_IN1, dwPLL_Shadow_IN1);
  Write_LC72131(MODE_IN2, dwPLL_Shadow_IN2);
  // save the current count
  Write_EEPROM(EE_CURCNT_LOW, cur_count[band] & 0xff); Write_EEPROM(EE_CURCNT_HIGH, cur_count[band] >> 8);
  Temp_Mute(0);
  return (Count_To_Freq());
  }
  //---------------------------------------------------------------------------
  // Tuner_Set_Frequency
  //---------------------------------------------------------------------------
  WORD Tuner_Set_Frequency(BYTE ctrl, WORD freq){
  BAND_INFO code *pBInfo;
  switch(band){
  case BAND_AM:
  if (b_amstep) pBInfo = &BandInfo_AM_10KHz; else pBInfo = &BandInfo_AM_9KHz; break;
  case BAND_FM:
  if (b_fmstep) pBInfo = &BandInfo_FM_100KHz; else pBInfo = &BandInfo_FM_50KHz; break;
  case BAND_SW:
  break;
  }
  switch (ctrl){
  case INQUIRE:
  return (Count_To_Freq()); break;
  case UP:
  cur_count[band] += pBInfo -> CntStep; break;
  case DOWN:
  cur_count[band] -= pBInfo -> CntStep; break;
  case SET:
  if ((band == BAND_AM) || (band == BAND_SW)){
  //return cur_count[band] * pBInfo -> FRef - 450;
  cur_count[band] = (freq + 450) / (pBInfo -> FRef);
  }
  else {
  //return cur_count[band] * ((FM_FREF *100)/1000) - 1070;
  cur_count[band] = ((freq + 1070) * 1000) / (FM_FREF *100);
  }
  break;
  }
  Tuner_Set_Frequency_Int();
  dwPLL_Shadow_IN2 |= BO2_ON; // Unmute
  Write_LC72131(MODE_IN1, dwPLL_Shadow_IN1);
  Write_LC72131(MODE_IN2, dwPLL_Shadow_IN2);
  // save the current count
  Write_EEPROM(EE_CURCNT_LOW, cur_count[band] & 0xff); Write_EEPROM(EE_CURCNT_HIGH, cur_count[band] >> 8);
  return (Count_To_Freq());
  }
  //---------------------------------------------------------------------------
  // Tuner_Step
  //---------------------------------------------------------------------------
  WORD Tuner_Step(BYTE ctrl){
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  if (ctrl != SET)return Tuner_Set_Frequency(ctrl, 0);
  }
  //---------------------------------------------------------------------------
  // Tuner_Scan
  //---------------------------------------------------------------------------
  int Tuner_Scan(BYTE ctrl){
  BAND_INFO code *pBInfo;
  WORD temp;
  register BYTE j;
  switch(band){
  case BAND_AM:
  if (b_amstep) pBInfo = &BandInfo_AM_10KHz; else pBInfo = &BandInfo_AM_9KHz; break;
  case BAND_FM:
  if (b_fmstep) pBInfo = &BandInfo_FM_100KHz; else pBInfo = &BandInfo_FM_50KHz; break;
  case BAND_SW:
  break;
  }
  if (ctrl == INQUIRE){
  return (Count_To_Freq());
  }
  else if (ctrl == UP){
  cur_count[band] += pBInfo -> CntStep;
  }
  else if (ctrl == DOWN){
  cur_count[band] -= pBInfo -> CntStep;
  }
  // Temp_Mute(1);
  Tuner_Set_Frequency_Int();
  Write_LC72131(MODE_IN1, dwPLL_Shadow_IN1);
  Write_LC72131(MODE_IN2, dwPLL_Shadow_IN2);
  // Wait PLL Lock -----------------------------------------------------------
  Pause(1); //
  for (j=0; j<255; j++){
  if (PIN_TUNER_DO)break;
  }
  dwPLL_Shadow_IN2 &= DO_MODE_MASK; // set DO mode, end uc
  dwPLL_Shadow_IN2 |= DO_MODE_END_UC;
  dwPLL_Shadow_IN1 |= CTE_ON; // IF count start
  Write_LC72131(MODE_IN1, dwPLL_Shadow_IN1);
  Write_LC72131(MODE_IN2, dwPLL_Shadow_IN2);
  // Wait Gate over -----------------------------------------------------
  for (j=0; j<10; j++){
  if (!PIN_TUNER_DO) break; // break when gate ends
  os_wait2(K_TMO, 1);
  }
  // Gate time over
  temp = Read_72131() & 0x0fffff;
  dwPLL_Shadow_IN2 |= BO2_ON; // Unmute
  Write_LC72131(MODE_IN2, dwPLL_Shadow_IN2);
  // save the current count
  Write_EEPROM(EE_CURCNT_LOW, cur_count[band] & 0xff); Write_EEPROM(EE_CURCNT_HIGH, cur_count[band] >> 8);
  if ((temp >= pBInfo -> IFCntMin) && (temp <= pBInfo -> IFCntMax)){
  return -(Count_To_Freq());
  }
  else {
  return (Count_To_Freq());
  }
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  }
  //---------------------------------------------------------------------------
  // Tuner_Get_Stereo
  //---------------------------------------------------------------------------
  BOOL Tuner_Get_Stereo(void){
  if (band == BAND_FM) {
  return (!(Read_72131() & 0x800000));
  }
  else
  return 0;
  }
  //---------------------------------------------------------------------------
  // Tuner_Set_Frequency_Int
  //---------------------------------------------------------------------------
  static void Tuner_Set_Frequency_Int(void){
  BAND_INFO code *pBInfo;
  switch(band){
  case BAND_AM:
  if (b_amstep) pBInfo = &BandInfo_AM_10KHz; else pBInfo = &BandInfo_AM_9KHz; break;
  case BAND_FM:
  if (b_fmstep) pBInfo = &BandInfo_FM_100KHz; else pBInfo = &BandInfo_FM_50KHz; break;
  case BAND_SW:
  break;
  }
  dwPLL_Shadow_IN1 = 0; dwPLL_Shadow_IN2 = 0;
  // Check Boundary -----------------------------------------------------
  if (cur_count[band] > pBInfo -> CntMax){
  cur_count[band] = pBInfo -> CntMin; // Cycling
  }
  else if (cur_count[band] < pBInfo -> CntMin){
  cur_count[band] = pBInfo -> CntMax; // Cycling
  }
  // IN2 Mode -----------------------------------------------------------
  dwPLL_Shadow_IN2 |= GATE_TIME_32MS; // Gate Time = 4ms
  dwPLL_Shadow_IN2 |= 0x100000; // IFS
  if (band == BAND_AM){ // Set Band
  dwPLL_Shadow_IN2 |= BO1_ON;
  }
  else if (band == BAND_FM){
  dwPLL_Shadow_IN2 |= BO4_ON;
  }
  if (!bST_MONO) {dwPLL_Shadow_IN2 |= BO3_ON;} // Stereo
  // dwPLL_Shadow_IN2 &= DO_MODE_MASK;
  dwPLL_Shadow_IN2 |= DO_MODE_UNLOCK; //
  // IN1 Mode -----------------------------------------------------------
  if (band == BAND_AM){ // Set Frequency
  dwPLL_Shadow_IN1 |= (cur_count[band] << 4);
  }
  else {
  dwPLL_Shadow_IN1 |= cur_count[band];
  }
  dwPLL_Shadow_IN1 |= pBInfo -> DivMode; // Set DIv Mode
  dwPLL_Shadow_IN1 |= pBInfo -> DivRefPara; // Set DIV Ref Para
  }
  //---------------------------------------------------------------------------
  // Count_To_Freq
  //---------------------------------------------------------------------------
  static WORD Count_To_Freq(void){
  BAND_INFO code *pBInfo;
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  switch(band){
  case BAND_AM:
  if (b_amstep) pBInfo = &BandInfo_AM_10KHz; else pBInfo = &BandInfo_AM_9KHz; break;
  case BAND_FM:
  if (b_fmstep) pBInfo = &BandInfo_FM_100KHz; else pBInfo = &BandInfo_FM_50KHz; break;
  case BAND_SW:
  break;
  }
  if ((band == BAND_AM) || (band == BAND_SW)){
  return cur_count[band] * pBInfo -> FRef - 450;
  }
  else {
  return cur_count[band] * ((FM_FREF *100)/1000) - 1070;
  }
  }
  #define LC72131_DELAY() {_nop_(); _nop_(); _nop_();}
  //---------------------------------------------------------------------------
  // Write_LC72131_Addr
  // addr: the addr of the control register
  // value: the valude to set to
  //---------------------------------------------------------------------------
  static void Write_LC72131_Addr(BYTE addr){
  register BYTE i;
  PIN_TUNER_CE = 0;
  PIN_TUNER_CL = 1;
  LC72131_DELAY();
  for (i = 8; i>0; --i){
  PIN_TUNER_CL = 0;
  LC72131_DELAY();
  if (addr & 0x01) PIN_TUNER_DI=1; else PIN_TUNER_DI=0;
  addr >>= 1;
  LC72131_DELAY();
  PIN_TUNER_CL = 1;
  LC72131_DELAY();
  }
  }
  //---------------------------------------------------------------------------
  // Write_LC72131
  // addr: the addr of the control register
  // value: the valude to set to
  //---------------------------------------------------------------------------
  static void Write_LC72131(BYTE addr, DWORD value){
  register BYTE i;
  // Send the addr byte first ------------//
  Write_LC72131_Addr(addr);
  PIN_TUNER_CE = 1;
  LC72131_DELAY();
  // Send the control value in following------------//
  for (i = 24; i>0; --i){
  PIN_TUNER_CL = 0;
  LC72131_DELAY();
  if (value & 0x01) PIN_TUNER_DI=1; else PIN_TUNER_DI=0;
  value >>= 1;
  LC72131_DELAY();
  PIN_TUNER_CL = 1;
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  LC72131_DELAY();
  }
  PIN_TUNER_CE = 0;
  }
  //---------------------------------------------------------------------------
  // Read_LC72131
  // addr: the addr of the control register
  // return value
  //---------------------------------------------------------------------------
  static DWORD Read_72131(void){
  register BYTE i;
  DWORD temp = 0;
  // Send the addr byte first ------------//
  Write_LC72131_Addr(MODE_OUT);
  PIN_TUNER_CE = 1;
  LC72131_DELAY();
  // read the value dword ------------//
  for (i=24; i>0; --i){
  PIN_TUNER_CL = 0;
  LC72131_DELAY();
  temp <<= 1;
  if (PIN_TUNER_DO) temp |= 1;
  PIN_TUNER_CL = 1;
  LC72131_DELAY();
  }
  PIN_TUNER_CE = 0;
  return temp;
  }
  头文件如下：
  #ifndef __TUNER_INT_H__
  #define __TUNER_INT_H__
  #include <types.h>
  // ----------------------------------------------------------------
  // Control Pins
  // ----------------------------------------------------------------
  extern BOOL PIN_TUNER_DO;
  extern BOOL PIN_TUNER_CL;
  extern BOOL PIN_TUNER_DI;
  extern BOOL PIN_TUNER_CE;
  // use 24c02, 0x80 - 0xff
  enum TUNER_EE {
  EE_AMSTEP = 0x80,
  EE_BAND,
  EE_CURCNT_LOW,
  EE_CURCNT_HIGH,
  EE_PRESET_BASE // To store the preset station
  };
  #define MAX_PRESET_NUMBER 0x29 // can store 20 channels for each band
  // -------------------------------------------------------------
  // Tuner Modle: T-989 of Guangzhou Youshen
  // -------------------------------------------------------------
  // work mode type define:
  #define MODE_IN1 0x28
  #define MODE_IN2 0x29
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  #define MODE_OUT 0x2a
  #define CTE_ON 0x040000
  #define IOC1 0x000001
  #define IOC2 0x000002
  #define IO1 0x000004
  #define IO2 0x000008
  #define BO1_ON 0x000010
  #define BO2_ON 0x000020
  #define BO3_ON 0x000040
  #define BO4_ON 0x000080
  #define DO_MODE_UNLOCK 0x000200
  #define DO_MODE_END_UC 0x000400
  #define DO_MODE_MASK ~0x000e00
  // ----------------------------------------
  // DEVIDER mode type define
  // ----------------------------------------
  #define AM_DV_MODE 0x000000 // 16 BIT
  #define SW_DV_MODE 0x020000 // 20
  #define FM_DV_MODE 0x020000 // 20 BIT SWALLOW
  #define AM_DV_REF_9KHz 0x900000 // 9 KHZ
  #define AM_DV_REF_10KHz 0x800000 // 10 KHZ
  #define SW_DV_REF 0xa00000 // 5 KHZ
  #define FM_DV_REF 0x300000 // 25 KHZ
  #define PLL_OFF_REF 0xe00000 // PLL inhibit and OSC stop.
  // ----------------------------------------
  // IF Count
  // ----------------------------------------
  #define GATE_TIME 32
  #define GATE_TIME_32MS 0x020000 //
  #define GATE_TIME_4MS 0x000000
  #define GATE_TIME_8MS 0x010000
  #define IFS 0x100000
  #define AM_IF_CNT 450*GATE_TIME // 450KH;
  #define AM_IF_CNT_MIN AM_IF_CNT - AM_IF_CNT*0.01
  #define AM_IF_CNT_MAX AM_IF_CNT + AM_IF_CNT*0.01
  #define SW_IF_CNT 450*GATE_TIME // 450KH;
  #define SW_IF_CNT_MIN SW_IF_CNT - SW_IF_CNT*0.01
  #define SW_IF_CNT_MAX SW_IF_CNT + SW_IF_CNT*0.01
  #define FM_IF_CNT 10700*GATE_TIME // 10.7 MH;
  #define FM_IF_CNT_MIN FM_IF_CNT - FM_IF_CNT*0.01
  #define FM_IF_CNT_MAX FM_IF_CNT + FM_IF_CNT*0.01
  // ----------------------------------------
  // Frequence Refrence
  // ----------------------------------------
  #define AM_FREF_9KHz 9 // 9khz
  #define AM_FREF_10KHz 10 // 10khz
  #define SW_FREF 5 // 5khz
  #define FM_FREF (25*2) // Fref=25*2 khz
  // Frequence Range
  #define AM_MIN_9KHz 522 // KHZ
  #define AM_MAX_9KHz 1611 // KHZ
  #define AM_MIN_10KHz 530 // KHZ
  #define AM_MAX_10KHz 1610 // KHZ
  #define SW_MIN 1700 // KHZ
  #define SW_MAX 25000 // KHZ
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  #define FM_MIN 8700 // 10KHZ
  #define FM_MAX 10800 // 10KHZ
  // Frequence Counter Range
  #define AM_CNT_MIN_9KHz ((AM_MIN_9KHz + 450)/9)
  #define AM_CNT_MAX_9KHz ((AM_MAX_9KHz + 450)/9)
  #define AM_CNT_MIN_10KHz ((AM_MIN_10KHz + 450)/10)
  #define AM_CNT_MAX_10KHz ((AM_MAX_10KHz + 450)/10)
  #define SW_CNT_MIN ((SW_MIN + 450)/SW_FREF)
  #define SW_CNT_MAX ((SW_MAX + 450)/SW_FREF)
  #define FM_CNT_MIN ((FM_MIN + 1070)/((FM_FREF *100)/1000))
  #define FM_CNT_MAX ((FM_MAX + 1070)/((FM_FREF *100)/1000))
  // ----------------------------------------
  // Search Step
  // ----------------------------------------
  #define AM_CNT_STEP 1 // F_step=1*5khz
  #define SW_CNT_STEP 1 // F_step=1*5khz
  #define FM_CNT_STEP_100KHz 2 // F_step=2*50khz when Fref=25khz
  #define FM_CNT_STEP_50KHz 1 // F_step=50khz when Fref=25khz
  typedef struct {
  DWORD DivMode;
  DWORD DivRefPara;
  WORD IFCntMax;
  WORD IFCntMin;
  BYTE FRef;
  WORD CntMax;
  WORD CntMin;
  BYTE CntStep;
  }BAND_INFO;
  enum {
  BAND_AM,
  BAND_FM,
  BAND_SW
  };
  static BAND_INFO code BandInfo_AM_9KHz = {AM_DV_MODE, AM_DV_REF_9KHz, AM_IF_CNT_MAX, AM_IF_CNT_MIN,
  AM_FREF_9KHz, AM_CNT_MAX_9KHz, AM_CNT_MIN_9KHz, AM_CNT_STEP};
  static BAND_INFO code BandInfo_AM_10KHz = {AM_DV_MODE, AM_DV_REF_10KHz, AM_IF_CNT_MAX, AM_IF_CNT_MIN,
  AM_FREF_10KHz, AM_CNT_MAX_10KHz, AM_CNT_MIN_10KHz, AM_CNT_STEP};
  static BAND_INFO code BandInfo_FM_100KHz = {FM_DV_MODE, FM_DV_REF, FM_IF_CNT_MAX, FM_IF_CNT_MIN, FM_FREF,
  FM_CNT_MAX, FM_CNT_MIN, FM_CNT_STEP_100KHz};
  static BAND_INFO code BandInfo_FM_50KHz = {FM_DV_MODE, FM_DV_REF, FM_IF_CNT_MAX, FM_IF_CNT_MIN, FM_FREF,
  FM_CNT_MAX, FM_CNT_MIN, FM_CNT_STEP_50KHz};
  static BAND_INFO code BandInfo_SW = {SW_DV_MODE, SW_DV_REF, SW_IF_CNT_MAX, SW_IF_CNT_MIN, SW_FREF,
  SW_CNT_MAX, SW_CNT_MIN, SW_CNT_STEP};
  // ----------------------------------------------------------------
  // Variables
  // ----------------------------------------------------------------
  static DWORD idata dwPLL_Shadow_IN1;
  static DWORD idata dwPLL_Shadow_IN2;
  static WORD idata cur_count[3]; // Current count
  static BOOL bST_MONO;
  static BOOL b_amstep;
  static BOOL b_fmstep = 1;
  static BYTE idata band;
  // ----------------------------------------------------------------
  // external functions
  // ----------------------------------------------------------------
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  static void Tuner_Set_Frequency_Int(void);
  static void Write_LC72131_Addr(BYTE addr);
  static DWORD Read_72131(void);
  static void Write_LC72131(BYTE addr, DWORD value);
  static WORD Count_To_Freq(void);
  extern void Pause(BYTE);
  extern BOOL Write_EEPROM(BYTE, BYTE);
  extern BYTE Read_EEPROM(BYTE);
  extern void Temp_Mute(BOOL bOnOff);
  #endif