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C-Netz: Add capability of non-standard OgK channel(s)

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This commit is contained in:
Andreas Eversberg
2022-06-09 19:27:22 +02:00
parent 4758f16324
commit 4930da8e0c
9 changed files with 244 additions and 110 deletions
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6
src/cnetz/cnetz.h
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@@ -6,7 +6,7 @@ typedef struct cnetz cnetz_t;
#include "fsk_demod.h"
#include "transaction.h"
#define CNETZ_OGK_KANAL 131
#define CNETZ_STD_OGK_KANAL 131
/* dsp modes of transmission */
enum dsp_mode {
@@ -66,6 +66,7 @@ struct clock_speed {
/* instance of cnetz sender */
struct cnetz {
sender_t sender;
int kanal; /* channel number */
enum cnetz_chan_type chan_type; /* channel type */
scrambler_t scrambler_tx; /* mirror what we transmit to MS */
scrambler_t scrambler_rx; /* mirror what we receive from MS */
@@ -99,6 +100,7 @@ struct cnetz {
/* dsp states */
enum dsp_mode dsp_mode; /* current mode: audio, "Telegramm", .... */
double rf_level_db; /* current RF level or nan, if not applicable */
iir_filter_t lp; /* low pass filter to eliminate noise above 5280 Hz */
fsk_fm_demod_t fsk_demod; /* demod process */
double fsk_deviation; /* deviation of FSK signal on sound card */
@@ -144,7 +146,7 @@ int cnetz_create(const char *kanal, enum cnetz_chan_type chan_type, const char *
void cnetz_destroy(sender_t *sender);
void cnetz_go_idle(cnetz_t *cnetz);
void cnetz_sync_frame(cnetz_t *cnetz, double sync, int ts);
int cnetz_meldeaufruf(uint8_t futln_nat, uint8_t futln_fuvst, uint16_t futln_rest);
int cnetz_meldeaufruf(uint8_t futln_nat, uint8_t futln_fuvst, uint16_t futln_rest, int ogk_kanal);
const struct telegramm *cnetz_transmit_telegramm_rufblock(cnetz_t *cnetz);
const struct telegramm *cnetz_transmit_telegramm_meldeblock(cnetz_t *cnetz);
void cnetz_receive_telegramm_ogk(cnetz_t *cnetz, struct telegramm *telegramm, int block);