收音头控制程序(LC72130)

收音头控制程序(LC72130)

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收音头控制程序(LC72130) lc72130 pdf datasheet
//------------------------------------------------------------------------
/**************************************************************************
// Tuner, VER 1.0
//
// COPYRIGHT (C) 2002, Enbia Technology Inc.
// Target: 89C5X, PLL IC: LC72130/LC72130M
// AUTHOR: STEVEN LUO
//
// Revision History:
// 2000/12/16 - Original Version
// 2001/4/3 - V2.0, ported to RTX51TNY
//
//------------------------------------------------------------------------
#include
#include
#include
#include
#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
// ----------------------------------------------------------------
// 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
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