/*
 * si4703.h
 *
 *  Created on: Aug 1, 2023
 *      Author: User
 */

#ifndef INC_SI4703_H_
#define INC_SI4703_H_

#include <stdbool.h>

#define SI4703	0x10<<1

// Define the register names
#define SI4703_DEVICEID 0x00
#define SI4703_CHIPID 0x01
#define POWERCFG 0x02
#define CHANNEL 0x03
#define SYSCONFIG1 0x04
#define SYSCONFIG2 0x05
#define SYSCONFIG3 0x06
#define STATUSRSSI 0x0A
#define READCHAN 0x0B
#define RDSA 0x0C
#define RDSB 0x0D
#define RDSC 0x0E
#define RDSD 0x0F

// Register 0x02 - POWERCFG
#define DSMUTE 15
#define DMUTE 14
#define SETMONO 13
#define RDSMODE 11
#define SKMODE 10
#define SEEKUP 9
#define SEEK 8

// Register 0x03 - CHANNEL
#define TUNE 15

// Register 0x04 - SYSCONFIG1
#define DEEMPHASIS50 0x0800
#define RDS 12
#define DE 11


// Register 0x05 - SYSCONFIG2
#define SEEKTH_MASK 0xFF00
#define SEEKTH_MIN 0x0000
#define SEEKTH_MID 0x1000
#define SEEKTH_MAX 0x7F00

#define FMSPACE_MASK 0x0030
#define FMSPACE_50 0x0020
#define FMSPACE_100 0x0010
#define FMSPACE_200 0x0000

#define VOLUME_MASK 0x000F

// Register 0x06 - SYSCONFIG3
#define SKSNR_MASK 0x00F0
#define SKSNR_OFF 0x0000
#define SKSNR_MIN 0x0010
#define SKSNR_MID 0x0030
#define SKSNR_MAX 0x0070

#define SKCNT_MASK 0x000F
#define SKCNT_OFF 0x0000
#define SKCNT_MIN 0x000F
#define SKCNT_MID 0x0003
#define SKCNT_MAX 0x0001


// Register 0x0A - STATUSRSSI
#define RDSR 0x8000  ///< RDS ready
#define STC 0x4000   ///< Seek Tune Complete
#define SFBL 0x2000  ///< Seek Fail Band Limit
#define AFCRL 0x1000
#define RDSS 0x0800  ///< RDS syncronized
#define SI 0x0100    ///< Stereo Indicator
#define RSSI 0x00FF

enum RADIO_BAND {
  RADIO_BAND_NONE = 0,  ///< No band selected.

  RADIO_BAND_FM = 0x01,       ///< FM band 87.5 - 108 MHz (USA, Europe) selected.
  RADIO_BAND_FMWORLD = 0x02,  ///< FM band 76 - 108 MHz (Japan, Worldwide) selected.
  RADIO_BAND_AM = 0x03,       ///< AM band selected.
  RADIO_BAND_KW = 0x04,       ///< KW band selected.

  RADIO_BAND_FMTX = 0x11  ///< Transmit for FM.
};

_Bool SI4703init(void);
void SI4703setVolume(int8_t newVolume);
void SI4703setMono(_Bool switchOn);
void SI4703setMute(_Bool switchOn);
void SI4703setSoftMute(_Bool switchOn);
void SI4703setBand(void);
uint16_t SI4703getFrequency(void);
void SI4703setFrequency(uint16_t newF);
void SI4703seek(_Bool seekUp);
void SI4703_readRegister0A(void);
void readsi4703_registers(void);
char savesi4703_registers(void);
void SI4703waitEnd(void);
#endif /* INC_SI4703_H_ */