58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
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#include "../libsample/sample.h"
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#include "../libfilter/iir_filter.h"
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#include "../libdisplay/display.h"
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#include <time.h>
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typedef struct dcf77_tx {
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int enable;
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double phase_360;
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double carrier_phase, carrier_phase_step; /* uncorrected phase */
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double test_phase, test_phase_step;
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double level;
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int wave, waves_0, waves_1, waves_sec;
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time_t timestamp;
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int second;
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char symbol;
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uint64_t data_frame;
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int test_tone;
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} dcf77_tx_t;
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typedef struct dcf77_rx {
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int enable;
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double phase_360;
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double carrier_phase, carrier_phase_step; /* uncorrected phase */
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iir_filter_t carrier_lp[2]; /* filters received carrier signal */
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double sample_counter, sample_step; /* when to sample */
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double *delay_buffer;
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int delay_size, delay_index;
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int clock_count;
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double value_level, value_short, value_long; /* measured values */
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int data_receive, data_index;
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char data_string[60]; /* 59 digits + '\0' */
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uint64_t data_frame;
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iir_filter_t clock_lp[2]; /* filters received carrier signal */
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} dcf77_rx_t;
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typedef struct dcf77 {
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dcf77_tx_t tx;
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dcf77_rx_t rx;
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/* measurements */
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dispmeas_t dispmeas; /* display measurements */
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dispmeasparam_t *dmp_input_level;
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dispmeasparam_t *dmp_signal_level;
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dispmeasparam_t *dmp_signal_quality;
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/* wave */
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dispwav_t dispwav; /* display wave form */
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} dcf77_t;
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int dcf77_init(int _fast_math);
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void dcf77_exit(void);
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dcf77_t *dcf77_create(int samplerate, int use_tx, int use_rx, int test_tone);
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void dcf77_destroy(dcf77_t *dcf77);
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void dcf77_tx_start(dcf77_t *dcf77, time_t timestamp);
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void dcf77_encode(dcf77_t *dcf77, sample_t *samples, int length);
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void dcf77_decode(dcf77_t *dcf77, sample_t *samples, int length);
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