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nzasch
148
codice/Core/Inc/bassofono.h
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148
codice/Core/Inc/bassofono.h
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#include <stdint.h>
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#include <stdio.h>
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#include <arm_math.h>
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#include "main.h"
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#include "rx.h"
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#include "tx.h"
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#define CLOCK (168000000UL)
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// RX ADC
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#define ADC_CLOCK (700000L) // (168000000/((47,5+12,5)*4)
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#define OVERSAMPLING (2)
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#define ADC_SAMPLE_RATE (ADC_CLOCK/OVERSAMPLING)
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#define ADC_BUFFER_SIZE (1024)
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#define SAMPLES_BUFFER_RATE (ADC_SAMPLE_RATE/ADC_BUFFER_SIZE)
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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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// =========== HBF ==========
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// #define MS_HBF_TAP_NUM (15)
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// #define DECIMATION_FACTOR (ADC_BUFFER_SIZE/ST2_BUFFER_SIZE)
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// #define DECIMATION_FACTOR_MASK (DECIMATION_FACTOR - 1)
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/*
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// 1° stadio
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// decimazione del singolo stadio
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#define MS_DECIMATION_FACTOR (2)
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#define MS_DECIMATION_FACTOR_MASK (MS_DECIMATION_FACTOR - 1)
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// ringbuf
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#define MIXED_SAMPLES_RINGBUFFER_SIZE (64) // l'ultimo deve essere grande almeno come MS_HBF_TAP_NUM
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#define MIXED_SAMPLES_RINGBUFFER_SIZE_MASK (MIXED_SAMPLES_RINGBUFFER_SIZE - 1)
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#define MIXED_SAMPLES_2M_RINGBUFFER_SIZE (MIXED_SAMPLES_RINGBUFFER_SIZE / 2)
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#define MIXED_SAMPLES_2M_RINGBUFFER_SIZE_MASK (MIXED_SAMPLES_2M_RINGBUFFER_SIZE - 1)
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#define ST1_OUT_SAMPLE_RATE (ADC_SAMPLE_RATE/(MS_DECIMATION_FACTOR*2))
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// 2° stadio
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#define ST2_BUFFER_SIZE (256)
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#define ST2_DECIMATION_FACTOR (4)
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#define ST2_OUT_SAMPLE_RATE (ST1_OUT_SAMPLE_RATE/ST2_DECIMATION_FACTOR)
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#define ST2_FILTER_BLOCK_SIZE (ST2_BUFFER_SIZE)
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#define ST2_FILTER_TAP_NUM (128)
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*/
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/*
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// =========== DEMOD ==========
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// DAC_SAMPLE_RATE/((2^32)/(incremento)) = freq
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// (2^32)/(DAC_SAMPLE_RATE/freq) = incremento
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#define NCO2_INCREMENT (343597383L)
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#define NCO2_FREQUENCY (DAC_SAMPLE_RATE/((0xFFFFFFFF)/NCO2_INCREMENT))
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#define LF_BUFFER_SIZE (ST2_BUFFER_SIZE/ST2_DECIMATION_FACTOR)
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// audio filter
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#define AUDIO_FILTER_TAP_NUM 128
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#define AUDIO_FILTER_FREQ_DEF (1350)
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#define AUDIO_FILTER_FREQ_MAX (DAC_SAMPLE_RATE/2)
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#define AUDIO_FILTER_BW_DEF (2000)
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#define AUDIO_FILTER_BW_MAX (DAC_SAMPLE_RATE/2)
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#define AUDIO_FILTER_BETA_DEF (16)
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#define AUDIO_FILTER_BLOCK_SIZE LF_BUFFER_SIZE
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*/
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// statemask
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/*
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#define FREQUENCY_OFFSET 0
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#define GAIN_OFFSET 1
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#define VOLUME_OFFSET 2
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#define FILTER_OFFSET 3
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#define MODULATION_OFFSET 4
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*/
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#define MOD_DC 0
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#define MOD_LSB 1
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#define MOD_USB 2
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#define MOD_AM 3
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// === DAC ===
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#define DAC_DIVISOR 7680
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#define DAC_SAMPLE_RATE (CLOCK/DAC_DIVISOR)
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// === UART ===
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#define RX_CMD_RB_SIZE (32)
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#define RX_CMD_RB_SIZE_MASK (RX_CMD_RB_SIZE - 1)
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#define UART_TX_BUFFER_SIZE (512)
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// ====== VARS ====================
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// state
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extern uint8_t receive, transmit;
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extern q31_t nco1_increment;
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extern uint32_t frequency;
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extern int32_t modulation;
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extern int32_t gain;
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extern int32_t volume;
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extern int32_t squelch;
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extern int32_t mic_gain;
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extern int32_t scan;
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extern uint32_t audio_filter_freq, audio_filter_bw, audio_filter_beta;
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extern uint16_t state_changed;
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extern CORDIC_HandleTypeDef hcordic;
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// uartz
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extern char uart_rx_buf[2], rx_cmd_rb[RX_CMD_RB_SIZE];
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extern uint8_t rx_cmd_rb_in_idx, rx_cmd_rb_out_idx;
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// uart tx
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extern char uart_tx_buf[UART_TX_BUFFER_SIZE];
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extern uint16_t uart_tx_buf_in_idx;
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// rx adc
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extern uint16_t adc_buffer[ADC_BUFFER_SIZE];
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// tx dac
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extern q31_t tx_dac_buffer[2][TX_DAC_BUFFER_SIZE];
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extern volatile uint8_t half_tx_dac_buffer_empty, tx_dac_buffer_toggle;
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extern q31_t if_I[LF_BUFFER_SIZE];
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extern q31_t if_Q[LF_BUFFER_SIZE];
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// RX DAC
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extern uint8_t lf_buffer_toggle;
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extern q31_t prefilter_lf_buffer[LF_BUFFER_SIZE];
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extern q31_t lf_buffer[2][LF_BUFFER_SIZE];
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// ======== FUNZIONI ========
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int32_t set_nco1_freq(int32_t freq);
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void set_filter(void);
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void set_frequency(void);
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void set_modulation(void);
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void set_dummy (void);
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uint8_t get_changed(uint8_t state);
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// varie
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uint16_t ringbuf_increment(uint8_t *index, uint8_t buff_size_mask);
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q31_t sat_mult_q31(q31_t a, q31_t b);
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// diag
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void diag(void);
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