39 lines
885 B
C
39 lines
885 B
C
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/*
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* File: modulator.h
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*/
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#ifndef MODULATOR_H
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#define MODULATOR_H
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#ifdef __XC16
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#include <dsp.h>
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#else
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typedef int16_t fractional;
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#define _Q15 _Q15sinPI(_Q15);
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#endif
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#include <stdint.h>
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#include "modem.h"
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typedef struct {
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fractional increment;
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fractional offset;
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fractional gain;
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} rotor_symbol;
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extern rotor_symbol rotor_constellation[MAX_MODULATION_ALPHABET_SIZE];
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extern rotor_symbol silence;
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// buffer dei simboli
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extern uint8_t tx_symbol_buffer[MAX_SYMBOL_BUFFER_SIZE];
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extern uint8_t tx_symbol_buffer_index, tx_symbol_buffer_lenght;
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// protoz
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void modulator_setup(void);
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void modulator_generate_sample_buffer(fractional *Q_buffer, fractional *I_buffer, uint8_t size, rotor_symbol symbol);
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void modulator_prepare_constellation_symbols(symbol *constellation, rotor_symbol *mod_constellation);
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void set_GPIO_bit(uint8_t symbol);
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#endif /* MODULATOR_H */
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