datalog.h File Reference

Data log module public API. More...

#include "err.h"
#include "configuration.h"

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Classes
struct	DATALOG_CFG_ts
	Configuration structure for initializing a data log handle. More...

Typedefs
typedef struct datalog_handle_s	DATALOG_HANDLE_ts
	Opaque handle representing a data log instance.

Enumerations
enum	DATALOG_TIME_te {   DATALOG_TIME_1S = 1 , DATALOG_TIME_2S = 2 , DATALOG_TIME_3S = 3 , DATALOG_TIME_4S = 4 ,   DATALOG_TIME_5S = 5 , DATALOG_TIME_10S = 10 , DATALOG_TIME_20S = 20 , DATALOG_TIME_30S = 30 ,   DATALOG_TIME_40S = 40 , DATALOG_TIME_50S = 50 , DATALOG_TIME_60S = 60 }
	Logging interval in seconds between consecutive log entries. More...

Functions
ERR_te	datalog_init_subsys (void)
	Initializes the data log subsystem.
ERR_te	datalog_deinit_subsys (void)
	Deinitializes the data log subsystem.
ERR_te	datalog_start_subsys (void)
	Starts the data log subsystem.
ERR_te	datalog_stop_subsys (void)
	Stops the data log subsystem.
ERR_te	datalog_init_handle (DATALOG_CFG_ts const *datalog_cfg, DATALOG_HANDLE_ts **datalog_handle_o)
	Initializes and registers a data log handle.
ERR_te	datalog_deinit_handle (DATALOG_HANDLE_ts const *datalog_handle)
	Deinitializes a data log handle.
ERR_te	datalog_run_handle (DATALOG_HANDLE_ts *datalog_handle)
	Writes a GPS data entry to the log file if the logging interval has elapsed.

Detailed Description

Data log module public API.

Author

github.com/Baksi675

This module implements periodic GPS data logging to a FAT filesystem (via FatFs) on an SD card. Each log entry records time, latitude, longitude, orthometric height, movement speed, and movement direction as retrieved from the NEO-6 GPS module.

Typical usage:

• Initialize the subsystem using datalog_init_subsys
• Configure a log using DATALOG_CFG_ts
• Register a log handle using datalog_init_handle
• Start the subsystem using datalog_start_subsys
• Periodically call datalog_run_handle to append log entries

Version

0.1

Date

2026-02-15

Copyright

Copyright (c) 2026

Definition in file datalog.h.