mirror of https://github.com/ArduPilot/ardupilot
144 lines
4.0 KiB
C++
144 lines
4.0 KiB
C++
/*
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DataFlash logging - file oriented variant
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This uses posix file IO to create log files called logNN.dat in the
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given directory
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*/
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#pragma once
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#include <AP_HAL/AP_HAL.h>
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#if CONFIG_HAL_BOARD == HAL_BOARD_F4LIGHT && (defined(BOARD_SDCARD_NAME) || defined(BOARD_DATAFLASH_FATFS))
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#include <AP_HAL/utility/RingBuffer.h>
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#include "DataFlash_Backend.h"
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#include <sd/SD.h>
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class DataFlash_File : public DataFlash_Backend
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{
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public:
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// constructor
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DataFlash_File(DataFlash_Class &front,
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DFMessageWriter_DFLogStart *,
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const char *log_directory);
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// initialisation
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void Init() override;
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bool CardInserted(void) const;
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// erase handling
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void EraseAll();
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// possibly time-consuming preparation handling:
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bool NeedPrep();
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void Prep();
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/* Write a block of data at current offset */
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bool _WritePrioritisedBlock(const void *pBuffer, uint16_t size, bool is_critical);
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uint32_t bufferspace_available();
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// high level interface
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uint16_t find_last_log() override;
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void get_log_boundaries(uint16_t log_num, uint16_t & start_page, uint16_t & end_page);
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void get_log_info(uint16_t log_num, uint32_t &size, uint32_t &time_utc);
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int16_t get_log_data(uint16_t log_num, uint16_t page, uint32_t offset, uint16_t len, uint8_t *data);
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uint16_t get_num_logs() override;
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uint16_t start_new_log(void) override;
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void periodic_1Hz(const uint32_t now) override;
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void periodic_fullrate(const uint32_t now);
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// this method is used when reporting system status over mavlink
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bool logging_enabled() const;
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bool logging_failed() const;
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void vehicle_was_disarmed() override;
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bool logging_started(void) const override { return !(!(_write_fd)); }
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void PrepForArming();
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protected:
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bool WritesOK() const override;
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bool StartNewLogOK() const override;
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private:
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File _write_fd;
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File _read_fd;
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uint16_t _read_fd_log_num;
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uint32_t _read_offset;
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uint32_t _write_offset;
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volatile bool _open_error;
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const char *_log_directory;
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uint32_t _io_timer_heartbeat;
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bool io_thread_alive() const;
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uint16_t _cached_oldest_log;
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uint16_t _last_oldest_log;
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uint16_t _log_num_from_list_entry(const uint16_t list_entry);
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// possibly time-consuming preparations handling
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void Prep_MinSpace();
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uint16_t find_oldest_log();
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bool file_exists(const char *filename) const;
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bool log_exists(const uint16_t lognum) const;
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const float min_avail_space_percent = 10.0f;
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// write buffer
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ByteBuffer _writebuf;
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const uint16_t _writebuf_chunk;
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uint32_t _last_write_time;
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/* construct a file name given a log number. Caller must free. */
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char *_log_file_name(const uint16_t log_num) const;
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char *_lastlog_file_name() const;
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uint32_t _get_log_size(const uint16_t log_num) const;
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uint32_t _get_log_time(const uint16_t log_num) const;
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void stop_logging(void);
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void _io_timer(void);
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uint32_t critical_message_reserved_space() const {
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// possibly make this a proportional to buffer size?
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uint32_t ret = 1024;
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if (ret > _writebuf.get_size()) {
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// in this case you will only get critical messages
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ret = _writebuf.get_size();
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}
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return ret;
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};
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uint32_t non_messagewriter_message_reserved_space() const {
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// possibly make this a proportional to buffer size?
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uint32_t ret = 1024;
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if (ret >= _writebuf.get_size()) {
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// need to allow messages out from the messagewriters. In
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// this case while you have a messagewriter you won't get
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// any other messages. This should be a corner case!
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ret = 0;
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}
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return ret;
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};
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float avail_space_percent(uint32_t *free = NULL);
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AP_HAL::Semaphore *semaphore;
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bool has_data;
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#define Daysto32(year, mon) (((year - 1) / 4) + MONTAB(year)[mon])
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/////////////////////////////////////////////////////////////////////
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static uint32_t to_timestamp(const struct tm *t);
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bool _busy;
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};
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#endif
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