Adafruit_Si4713.h

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#include <Adafruit_I2CDevice.h>

#include "Arduino.h"

// #define SI471X_CMD_DEBUG
#define SI4710_ADDR0 0x11      
#define SI4710_ADDR1 0x63      
#define SI4710_STATUS_CTS 0x80 

/* COMMANDS */
#define SI4710_CMD_POWER_UP \
  0x01 
#define SI4710_CMD_GET_REV 0x10 
#define SI4710_CMD_POWER_DOWN 0x11     
#define SI4710_CMD_SET_PROPERTY 0x12   
#define SI4710_CMD_GET_PROPERTY 0x13   
#define SI4710_CMD_GET_INT_STATUS 0x14 
#define SI4710_CMD_PATCH_ARGS \
  0x15 
#define SI4710_CMD_PATCH_DATA \
  0x16 
#define SI4710_CMD_TX_TUNE_FREQ 0x30 
#define SI4710_CMD_TX_TUNE_POWER \
  0x31 
#define SI4710_CMD_TX_TUNE_MEASURE \
  0x32 
#define SI4710_CMD_TX_TUNE_STATUS \
  0x33 
#define SI4710_CMD_TX_ASQ_STATUS \
  0x34 
#define SI4710_CMD_TX_RDS_BUFF \
  0x35 
#define SI4710_CMD_TX_RDS_PS 0x36 
#define SI4710_CMD_GPO_CTL 0x80   
#define SI4710_CMD_GPO_SET 0x81   

/* Parameters */
#define SI4713_PROP_GPO_IEN 0x0001 
#define SI4713_PROP_DIGITAL_INPUT_FORMAT \
  0x0101 
#define SI4713_PROP_DIGITAL_INPUT_SAMPLE_RATE \
  0x0103 
#define SI4713_PROP_REFCLK_FREQ \
  0x0201 
#define SI4713_PROP_REFCLK_PRESCALE \
  0x0202 
#define SI4713_PROP_TX_COMPONENT_ENABLE \
  0x2100 
#define SI4713_PROP_TX_AUDIO_DEVIATION \
  0x2101 
#define SI4713_PROP_TX_PILOT_DEVIATION \
  0x2102 
#define SI4713_PROP_TX_RDS_DEVIATION \
  0x2103 
#define SI4713_PROP_TX_LINE_LEVEL_INPUT_LEVEL \
  0x2104 
#define SI4713_PROP_TX_LINE_INPUT_MUTE \
  0x2105 
#define SI4713_PROP_TX_PREEMPHASIS \
  0x2106 
#define SI4713_PROP_TX_PILOT_FREQUENCY \
  0x2107 
#define SI4713_PROP_TX_ACOMP_ENABLE \
  0x2200 
#define SI4713_PROP_TX_ACOMP_THRESHOLD \
  0x2201 
#define SI4713_PROP_TX_ATTACK_TIME \
  0x2202 
#define SI4713_PROP_TX_RELEASE_TIME \
  0x2203 
#define SI4713_PROP_TX_ACOMP_GAIN \
  0x2204 
#define SI4713_PROP_TX_LIMITER_RELEASE_TIME \
  0x2205 
#define SI4713_PROP_TX_ASQ_INTERRUPT_SOURCE \
  0x2300 
#define SI4713_PROP_TX_ASQ_LEVEL_LOW \
  0x2301 
#define SI4713_PROP_TX_ASQ_DURATION_LOW \
  0x2302 
#define SI4713_PROP_TX_AQS_LEVEL_HIGH \
  0x2303 
#define SI4713_PROP_TX_AQS_DURATION_HIGH \
  0x2304 
#define SI4713_PROP_TX_RDS_INTERRUPT_SOURCE \
  0x2C00 
#define SI4713_PROP_TX_RDS_PI 0x2C01 
#define SI4713_PROP_TX_RDS_PS_MIX \
  0x2C02 
#define SI4713_PROP_TX_RDS_PS_MISC \
  0x2C03 
#define SI4713_PROP_TX_RDS_PS_REPEAT_COUNT \
  0x2C04 
#define SI4713_PROP_TX_RDS_MESSAGE_COUNT \
  0x2C05 
#define SI4713_PROP_TX_RDS_PS_AF \
  0x2C06 
#define SI4713_PROP_TX_RDS_FIFO_SIZE \
  0x2C07 


class Adafruit_Si4713 {
 public:
  Adafruit_Si4713(int8_t rstpin = -1);
  bool begin(uint8_t addr = SI4710_ADDR1, TwoWire* theWire = &Wire);
  void reset();

  void powerUp();
  // void configure();
  uint8_t getRev();

  void tuneFM(uint16_t freqKHz);
  uint8_t getStatus(void);
  void readTuneStatus(void);
  void readTuneMeasure(uint16_t freq);
  void setTXpower(uint8_t pwr, uint8_t antcap = 0);
  void readASQ(void);
  void setProperty(uint16_t p, uint16_t v);

  // RDS stuff
  void beginRDS(uint16_t programID = 0xADAF);
  void setRDSstation(const char* s);
  void setRDSbuffer(const char* s);

  uint16_t currFreq;  
  uint8_t currdBuV,   
      currAntCap,     
      currNoiseLevel, 
      currASQ;        
  int8_t currInLevel; 

  void setGPIO(uint8_t x);
  void setGPIOctrl(uint8_t x);

 private:
  void sendCommand(uint8_t len);

  int8_t _rst;
  uint8_t _i2ccommand[10]; // holds the command buffer
  Adafruit_I2CDevice* i2c_dev = NULL;
};