2021-07-02 22:19:04 +02:00
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#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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2022-01-01 02:10:06 +01:00
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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_PWM 2
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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_NONE
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2021-07-02 22:19:04 +02:00
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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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2022-01-01 02:10:06 +01:00
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// TX DAC
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#define TX_DAC_SAMPLE_RATE (CLOCK/480)
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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)
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2021-12-31 04:22:22 +01:00
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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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2021-07-02 22:19:04 +02:00
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// buffer
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extern volatile uint8_t half_tx_dac_buffer_empty, tx_dac_buffer_toggle;
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extern volatile uint8_t tx_adc_buffer_ready;
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// filtro audio
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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_AUDIO_FILTER_BLOCK_SIZE + TX_AUDIO_FILTER_TAP_NUM - 1];
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extern q31_t tx_audio_filter_Q_state[TX_AUDIO_FILTER_BLOCK_SIZE + TX_AUDIO_FILTER_TAP_NUM - 1];
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extern int32_t tx_audio_filter_coeffs[TX_AUDIO_FILTER_TAP_NUM];
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// modulatori
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void ssb_modulator(q31_t *in_I, q31_t *in_Q, uint16_t size, q31_t *out, q31_t nco_freq);
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void dc_modulator(q31_t *in, uint16_t size, q31_t *out);
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void am_modulator(q31_t *in_I, q31_t *in_Q, uint16_t size, q31_t *out);
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#endif
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