onur
516016efb9
Wait for every navigation-ready tracking channel in a GPS epoch, remove unlocked channels without a timeout, and keep late joins for the next epoch. Reset PLIC ownership during warm initialization and extend Linux synthetic, integrity, and fake-MMIO regression coverage.
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
#ifndef GPS_NAV_EPOCH_H
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#define GPS_NAV_EPOCH_H
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#include <stdbool.h>
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#include <stdint.h>
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/*
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* The current receiver exposes nine tracking channels. Keep the epoch
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* selector bounded so its exhaustive, allocation-free search has a fixed
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* worst-case cost on the embedded target.
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*/
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#define GPS_NAV_EPOCH_MAX_CANDIDATES 9u
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typedef struct {
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int week;
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double tow_sec;
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uint32_t raw_sample;
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} gps_nav_epoch_key_t;
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typedef struct {
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uint32_t selected_mask;
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unsigned int selected_count;
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unsigned int reference_index;
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} gps_nav_epoch_selection_t;
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typedef struct {
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uint64_t epoch_id;
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uint32_t expected_mask;
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uint32_t received_mask;
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bool active;
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} gps_nav_epoch_assembly_t;
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typedef enum {
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GPS_NAV_EPOCH_EVENT_INVALID = 0,
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GPS_NAV_EPOCH_EVENT_ACCEPTED,
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GPS_NAV_EPOCH_EVENT_DUPLICATE,
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GPS_NAV_EPOCH_EVENT_STALE,
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GPS_NAV_EPOCH_EVENT_FUTURE,
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GPS_NAV_EPOCH_EVENT_COMPLETE
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} gps_nav_epoch_event_result_t;
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bool gps_nav_epoch_select(
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const gps_nav_epoch_key_t candidates[GPS_NAV_EPOCH_MAX_CANDIDATES],
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unsigned int candidate_count,
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uint32_t sample_window,
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double tow_tolerance_sec,
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gps_nav_epoch_selection_t* selection);
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bool gps_nav_epoch_id(
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int week,
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double tow_sec,
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unsigned int period_ms,
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uint64_t* epoch_id);
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void gps_nav_epoch_assembly_reset(gps_nav_epoch_assembly_t* assembly);
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gps_nav_epoch_event_result_t gps_nav_epoch_assembly_push(
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gps_nav_epoch_assembly_t* assembly,
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uint64_t epoch_id,
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unsigned int channel,
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uint32_t ready_mask);
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bool gps_nav_epoch_assembly_remove_channel(
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gps_nav_epoch_assembly_t* assembly,
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unsigned int channel);
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bool gps_nav_epoch_assembly_complete(
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const gps_nav_epoch_assembly_t* assembly);
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#endif
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