QN8035 FM 单芯片驱动

#include "8035.h" extern UINT8 QND_ReadReg(UINT8 adr); extern UINT8 QND_WriteReg(UINT8 adr, UINT8 value); #define R_TXRX_MASK 0x30 uint32_t qnd_Crystal = QND_CRYSTAL_DEFAULT; UINT8 qnd_PrevMode; UINT8 qnd_Country = COUNTRY_CHINA ; UINT16 qnd_CH_START = 7600; UINT16 qnd_CH_STOP = 10800; UINT8 qnd_CH_STEP = 1; UINT8 qnd_AutoScanAll = 0; UINT8 qnd_IsStereo; UINT8 qnd_ChCount; UINT8 qnd_R16; UINT8 qnd_R17; UINT8 qnd_R46; UINT16 qnd_ChList[QN_CCA_MAX_CH]; UINT8 qnd_StepTbl[3]={5,10,20}; QND_SeekCallBack qnd_CallBackFunc = 0; /********************************************************************** void QNF_RXInit() ********************************************************************** Description: set to SNR based MPX control. Call this function before tune to one specific channel Parameters: None Return Value: None **********************************************************************/ void QNF_RXInit() { QNF_SetRegBit(0x1B,0x08,0x00); //Let NFILT adjust freely QNF_SetRegBit(0x2C,0x3F,0x12); //When SNR<ccth31, ccfilt3 will work QNF_SetRegBit(0x1D,0x40,0x00);//Let ccfilter3 adjust freely QNF_SetRegBit(0x41,0x0F,0x0A);//Set a hcc index to trig ccfilter3's adjust QND_WriteReg(0x45,0x50);//Set aud_thrd will affect ccfilter3's tap number QNF_SetRegBit(0x40,0x70,0x70); //snc/hcc/sm snr_rssi_sel; snc_start=0x40; hcc_start=0x30; sm_start=0x20 QNF_SetRegBit(0x19,0x80,0x80); //Use SNR for ccfilter selection criterion QNF_SetRegBit(0x3E,0x80,0x80); //it is decided by programming this register QNF_SetRegBit(0x41,0xE0,0xC0);//DC notching High pass filter bandwidth; remove low freqency dc signals QNF_SetRegBit(0x42,0x10,0x10);//disable the vtune monitor QNF_SetRegBit(0x34, 0x7F,SMSTART_VAL); //set SNCSTART QNF_SetRegBit(0x35,0x7F,SNCSTART_VAL); //set SNCSTART QNF_SetRegBit(0x36,0x7F,HCCSTART_VAL); //set HCCSTART } /********************************************************************** void QNF_SetMute(UINT8 On) ********************************************************************** Description: set register specified bit Parameters: On: 1: mute, 0: unmute Return Value: None **********************************************************************/ void QNF_SetMute(UINT8 On) { if(On) { QNF_SetRegBit(0x4C, 0x0B, 0x0B); } else { QND_Delay(QND_DELAY_BEFORE_UNMUTE); QNF_SetRegBit(0x4C, 0x0B, 0x00); } } /********************************************************************** void QNF_SetRegBit(UINT8 reg, UINT8 bitMask, UINT8 data_val) ********************************************************************** Description: set register specified bit Parameters: reg: register that will be set bitMask: mask specified bit of register data_val: data will be set for specified bit Return Value: None **********************************************************************/ void QNF_SetRegBit(UINT8 reg, UINT8 bitMask, UINT8 data_val) { UINT8 temp; temp = QND_ReadReg(reg); temp &= (UINT8)(~bitMask); temp |= data_val & bitMask; // temp |= data_val; QND_WriteReg(reg, temp); } /********************************************************************** UINT16 QNF_GetCh() ********************************************************************** Description: get current channel frequency Parameters: None Return Value: channel frequency **********************************************************************/ UINT16 QNF_GetCh() { UINT8 tCh; UINT8 tStep; UINT16 ch = 0; // set to reg: CH_STEP tStep = QND_ReadReg(CH_STEP); tStep &= CH_CH; ch = tStep ; tCh= QND_ReadReg(CH); ch = (ch<<8)+tCh; return CHREG2FREQ(ch); } /********************************************************************** UINT8 QNF_SetCh(UINT16 freq) ********************************************************************** Description: set channel frequency Parameters: freq: channel frequency to be set Return Value: 1: success **********************************************************************/ UINT8 QNF_SetCh(UINT16 freq) { // calculate ch parameter used for register setting UINT8 tStep; UINT8 tCh; UINT16 f; UINT16 pll_dlt; //this is a software patch for improving sensitivity at 85.4M,85.5M and 85.6M frequency if(freq == 8540 || freq == 8550 || freq == 8560) { pll_dlt = (UINT16)qnd_R16 >> 3; //getting the pll_dlt lower 5 bits. pll_dlt |=(UINT16)qnd_R17 << 5; //getting the pll_dlt higher 8 bits. pll_dlt -= 1039; QND_WriteReg(0x16, (UINT8)pll_dlt << 3); QND_WriteReg(0x17, (UINT8)(pll_dlt >> 5)); if(freq == 8540) QND_WriteReg(0x46, 0x9D); else if(freq == 8550) QND_WriteReg(0x46, 0x69); else QND_WriteReg(0x46, 0x34); freq = 8570; } else { QND_WriteReg(0x16, qnd_R16); QND_WriteReg(0x17, qnd_R17); QND_WriteReg(0x46, qnd_R46); } f = FREQ2CHREG(freq); // set to reg: CH tCh = (UINT8) f; QND_WriteReg(CH, tCh); // set to reg: CH_STEP tStep = QND_ReadReg(CH_STEP); tStep &= ~CH_CH; tStep |= ((UINT8) (f >> 8) & CH_CH); QND_WriteReg(CH_STEP, tStep); return 1; } /********************************************************************** void QNF_ConfigScan(UINT16 start,UINT16 stop, UINT8 step) ********************************************************************** Description: config start, stop, step register for FM/AM CCA or CCS Parameters: start Set the frequency (10kHz) where scan to be started, eg: 7600 for 76.00MHz. stop Set the frequency (10kHz) where scan to be stopped, eg: 10800 for 108.00MHz step 1: set leap step to (FM)100kHz / 10kHz(AM) 2: set leap step to (FM)200kHz / 1kHz(AM) 0: set leap step to (FM)50kHz / 9kHz(AM) Return Value: None **********************************************************************/ void QNF_ConfigScan(UINT16 start,UINT16 stop, UINT8 step) { // calculate ch para UINT8 tStep = 0; UINT8 tS; UINT16 fStart; UINT16 fStop; fStart = FREQ2CHREG(start); fStop = FREQ2CHREG(stop); // set to reg: CH_START tS = (UINT8) fStart; QND_WriteReg(CH_START, tS); tStep |= ((UINT8) (fStart >> 6) & CH_CH_START); // set to reg: CH_STOP tS = (UINT8) fStop; QND_WriteReg(CH_STOP, tS); tStep |= ((UINT8) (fStop >> 4) & CH_CH_STOP); // set to reg: CH_STEP tStep |= step << 6; QND_WriteReg(CH_STEP, tStep); } /********************************************************************** void QNF_SetAudioMono(UINT8 modemask, UINT8 mode) ********************************************************************** Description: Set audio output to mono. Parameters: modemask: mask register specified bit mode QND_RX_AUDIO_MONO: RX audio to mono QND_RX_AUDIO_STEREO: RX audio to stereo QND_TX_AUDIO_MONO: TX audio to mono QND_TX_AUDIO_STEREO: TX audio to stereo Return Value: None **********************************************************************/ void QNF_SetAudioMono(UINT8 modemask, UINT8 mode) { if (mode == QND_RX_AUDIO_MONO) QNF_SetRegBit(SYSTEM1,modemask, 0x04); else QNF_SetRegBit(SYSTEM1,modemask, mode); } /********************************************************************** int QND_Delay() ********************************************************************** Description: Delay for some ms, to be customized according to user application platform Parameters: ms: ms counts Ret