bassofono/codice/Core/Inc/si5351.h

#define SI5351_ADDRESS		(0x60)

#define SI5351_CRYSTAL_FREQ	24000000

#define SI5351_MIN_FREQ		3000
#define SI5351_MAX_FREQ		200000000

// #### registri ####

#define SI5351_OUT_ENABLE	3
#define SI5351_OUT_DIS_STATE	24

#define SI5351_INPUT_SOURCE	15

#define	SI5351_CLK0_CONTROL	16
#define	SI5351_CLK1_CONTROL	17
#define	SI5351_CLK2_CONTROL	18

#define SI5351_PLLA		26
#define SI5351_PLLB		34

#define SI5351_MULTISYNTH0	42
#define SI5351_MULTISYNTH1	50
#define SI5351_MULTISYNTH2	58

#define SI5351_RESET		177
#define SI5351_CRYSTAL_LOAD	183

extern I2C_HandleTypeDef hi2c1;

void si53531_initialize(void);
void si53531_set_frequency(uint32_t freq, uint8_t synth);
void si5351_off(void);
void si5351_on(void);