109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
#ifndef __TX_H
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#define __TX_H
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#include <stdint.h>
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#include <arm_math.h>
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#define CW_TONE_INCREMENT 0.15
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#define CW_TONE_VOLUME 2
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#define TX_TYPE_NONE 0
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#define TX_TYPE_DAC 1
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#define TX_TYPE_SI5351 3
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// #define TX_TYPE TX_TYPE_SI5351
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#define TX_TYPE TX_TYPE_DAC
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// TX ADC
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#define TX_ADC_DIVISOR 7680
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#define TX_ADC_SAMPLE_RATE (CLOCK/TX_ADC_DIVISOR) // 21875
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#define TX_ADC_DIMENSIONE_BUFFER (64)
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#define TX_ADC_BUFFER_RATE (TX_ADC_SAMPLE_RATE/TX_ADC_DIMENSIONE_BUFFER)
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// TX IF
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/*
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#define TX_AUDIO_FILTER_INTERPOLATION_FACTOR (16)
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#define TX_AUDIO_FILTER_BLOCK_SIZE (1024)
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#define TX_AUDIO_FILTER_TAP_NUM (128)
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*/
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#define TX_FILTRO_AUDIO_FATTORE_INTERPOLAZIONE (16)
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#define TX_FILTRO_AUDIO_DIMENSIONE_BLOCCO (64)
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#define TX_FILTRO_AUDIO_NUMERO_TAP (128)
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// filtro audio
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#define TX_FILTRO_AUDIO_TAP_NUM 128
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#define TX_FILTRO_AUDIO_FREQ_DEF (1250)
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#define TX_FILTRO_AUDIO_FREQ_MAX (TX_DAC_SAMPLE_RATE/2)
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#define TX_FILTRO_AUDIO_BANDA_DEF (2000)
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#define TX_FILTRO_AUDIO_BANDA_MAX (TX_DAC_SAMPLE_RATE/2)
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#define TX_FILTRO_AUDIO_BETA_DEF (16)
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#define TX_FILTRO_AUDIO_BLOCK_SIZE TX_DAC_BUFFER_SIZE
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#define TX_FILTRO_RF_FATTORE_INTERPOLAZIONE (16)
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#define TX_FILTRO_RF_DIMENSIONE_BLOCCO (1024)
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#define TX_FILTRO_RF_NUMERO_TAP (128)
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// TX DAC
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#define TX_DAC_SAMPLE_RATE (CLOCK/480) // 350000
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#define TX_DAC_BUFFER_SIZE (1024)
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#define TX_DAC_BUFFER_RATE (TX_DAC_SAMPLE_RATE/TX_DAC_BUFFER_SIZE) // 341,796
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#define TX_NCO_FREQUENCY (TX_ADC_SAMPLE_RATE/((0xFFFFFFFF)/NCO2_INCREMENT)) // 1750
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#define TX_SMETER_SCALE 2
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// variabili
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extern uint8_t tx_signal, tx_signal_last;
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extern q31_t tx_nco1_increment;
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// buffer
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// TX ADC
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extern volatile uint8_t tx_adc_buffer_pronto;
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extern uint16_t tx_adc_buffer[TX_ADC_DIMENSIONE_BUFFER];
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// TX filtro audio
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extern arm_fir_instance_q31 tx_filtro_audio_struttura;
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extern q31_t tx_filtro_audio_stato[TX_FILTRO_AUDIO_DIMENSIONE_BLOCCO + TX_FILTRO_AUDIO_NUMERO_TAP - 1];
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extern int32_t tx_filtro_audio_coefficienti[TX_FILTRO_AUDIO_NUMERO_TAP];
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// TX DAC
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extern volatile uint8_t tx_dac_buffer_mezzo_vuoto, tx_dac_buffer_toggle;
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extern q31_t tx_dac_buffer[2][TX_DAC_BUFFER_SIZE];
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// TX IF
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extern q31_t tx_I_buffer[TX_ADC_DIMENSIONE_BUFFER], tx_Q_buffer[TX_ADC_DIMENSIONE_BUFFER];
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// funzioni
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// filtro audio
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extern void tx_filtra_audio(q31_t *out, uint16_t dimensione, uint16_t *in);
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extern arm_fir_instance_q31 tx_audio_filter_I_struct, tx_audio_filter_Q_struct;
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extern q31_t tx_audio_filter_I_state[TX_FILTRO_AUDIO_DIMENSIONE_BLOCCO + TX_FILTRO_AUDIO_NUMERO_TAP - 1];
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extern q31_t tx_audio_filter_Q_state[TX_FILTRO_AUDIO_DIMENSIONE_BLOCCO + TX_FILTRO_AUDIO_NUMERO_TAP - 1];
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extern int32_t tx_audio_filter_coeffs[TX_FILTRO_AUDIO_NUMERO_TAP];
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// mixer
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void tx_mixer(q31_t *out, uint16_t dimensione_out, q31_t *I_in, q31_t *Q_in, int32_t incremento_nco);
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// modulatori
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void modulatore_dc(q31_t *out_I, q31_t *out_Q, uint16_t dimensione, q31_t *in);
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void modulatore_ssb(q31_t *out_I, q31_t *out_Q, uint16_t dimensione, q31_t *in, q31_t nco_freq);
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void modulatore_am(q31_t *out_I, q31_t *out_Q, uint16_t dimensione, q31_t *in);
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uint16_t u12_sine(void);
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void genera_tono(q31_t *buffer, uint16_t buffer_dimensione);
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void set_tx_nco1_freq(int32_t freq);
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#endif
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