67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
#pragma once
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#include <stdint.h>
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#include <osmocom/core/prbs.h>
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#include <osmocom/core/select.h>
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#define MAX_NR_TS 32
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#define PRBS_LEN 2048
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/* prbs.c */
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struct timeslot_state;
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struct prbs_precomp {
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uint8_t bytes[PRBS_LEN/8];
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};
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void prbs_for_ts_nr(struct osmo_prbs *prbs, uint8_t ts_nr);
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void prbs_precomp(struct prbs_precomp *out, const struct osmo_prbs *prbs);
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void ts_init_prbs_tx(struct timeslot_state *ts, unsigned int prbs_offs_tx);
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void ts_init_prbs_rx(struct timeslot_state *ts, unsigned int prbs_offs_rx);
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/* utils.c */
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uint8_t bits_set_in_byte(uint8_t byte);
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void cfg_dahdi_buffer(int fd);
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void set_realtime(int rt_prio);
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struct timeslot_state_tx {
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struct osmo_prbs prbs; /* PRBS definition */
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struct prbs_precomp prbs_pc; /* pre-computed PRBS bytes */
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unsigned int prbs_pc_idx; /* next to-be-transmitted byte offset in prbs_pc */
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bool active; /* started tx ? */
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};
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struct timeslot_state_rx {
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struct osmo_prbs prbs; /* PRBS definition */
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struct prbs_precomp prbs_pc[8]; /* bit-shifted pre-computed PRBS sequences */
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struct {
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bool has_sync; /* do we have a PRBS sync? */
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struct timespec ts_sync; /* time at which sync was established */
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unsigned int prbs_pc_num; /* index to prbs_pc[] array */
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unsigned int prbs_pc_offset; /* offset of next byte into prbs_pc[pc_num].bytes[] */
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unsigned int num_bit_err; /* bit errors since last sync */
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unsigned int num_sync_loss; /* number of sync losses since start */
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} sync_state;
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};
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struct timeslot_state {
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struct osmo_fd ofd;
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struct timeslot_state_tx tx;
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struct timeslot_state_rx rx;
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};
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struct test_state {
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struct timeslot_state ts[MAX_NR_TS];
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unsigned int next_unused_ts;
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};
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/* rx.c */
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void process_rx(struct timeslot_state_rx *tsr, unsigned int ts_nr, const uint8_t *data, unsigned int len);
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/* tx.c */
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void process_tx(struct timeslot_state *ts, int len);
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