51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
#pragma once
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#include <stdint.h>
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#include <time.h>
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#include <osmocom/core/timer.h>
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#define FRAME_DURATION_uS 4615
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#define GSM_SUPERFRAME (26 * 51)
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#define GSM_HYPERFRAME (2048 * GSM_SUPERFRAME)
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/* TDMA frame number arithmetics */
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#define TDMA_FN_SUM(a, b) \
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((a + b) % GSM_HYPERFRAME)
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#define TDMA_FN_SUB(a, b) \
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((a + GSM_HYPERFRAME - b) % GSM_HYPERFRAME)
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#define TDMA_FN_INC(fn) \
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TDMA_FN_SUM(fn, 1)
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enum tdma_sched_clck_state {
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SCH_CLCK_STATE_WAIT,
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SCH_CLCK_STATE_OK,
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};
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/* Forward structure declaration */
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struct trx_sched;
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/*! \brief One scheduler instance */
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struct trx_sched {
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/*! \brief Clock state */
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uint8_t state;
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/*! \brief Local clock source */
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struct timespec clock;
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/*! \brief Count of processed frames */
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uint32_t fn_counter_proc;
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/*! \brief Local frame counter advance */
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uint32_t fn_counter_advance;
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/*! \brief Frame counter */
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uint32_t fn_counter_lost;
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/*! \brief Frame callback timer */
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struct osmo_timer_list clock_timer;
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/*! \brief Frame callback */
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void (*clock_cb)(struct trx_sched *sched);
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/*! \brief Private data (e.g. pointer to trx instance) */
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void *data;
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};
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int sched_clck_handle(struct trx_sched *sched, uint32_t fn);
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void sched_clck_reset(struct trx_sched *sched);
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