ardupilot/libraries/DataFlash/DataFlash_File.h

75 lines
2.1 KiB
C++

/// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
/*
DataFlash logging - file oriented variant
This uses posix file IO to create log files called logNN.dat in the
given directory
*/
#ifndef DataFlash_File_h
#define DataFlash_File_h
class DataFlash_File : public DataFlash_Class
{
public:
// constructor
DataFlash_File(const char *log_directory);
// initialisation
void Init(void);
bool CardInserted(void);
// erase handling
bool NeedErase(void);
void EraseAll();
/* Write a block of data at current offset */
void WriteBlock(const void *pBuffer, uint16_t size);
// high level interface
uint16_t find_last_log(void);
void get_log_boundaries(uint16_t log_num, uint16_t & start_page, uint16_t & end_page);
uint16_t get_num_logs(void);
uint16_t start_new_log(void);
void LogReadProcess(uint16_t log_num,
uint16_t start_page, uint16_t end_page,
uint8_t num_types,
const struct LogStructure *structure,
void (*print_mode)(AP_HAL::BetterStream *port, uint8_t mode),
AP_HAL::BetterStream *port);
void DumpPageInfo(AP_HAL::BetterStream *port);
void ShowDeviceInfo(AP_HAL::BetterStream *port);
void ListAvailableLogs(AP_HAL::BetterStream *port);
private:
static int _write_fd;
int _read_fd;
uint32_t _read_offset;
static volatile bool _initialised;
const char *_log_directory;
/*
read a block
*/
void ReadBlock(void *pkt, uint16_t size);
// write buffer
static uint8_t *_writebuf;
static const uint16_t _writebuf_size;
static volatile uint16_t _writebuf_head;
static volatile uint16_t _writebuf_tail;
static uint32_t _last_write_time;
/* construct a file name given a log number. Caller must free. */
char *_log_file_name(uint16_t log_num);
char *_lastlog_file_name(void);
uint32_t _get_log_size(uint16_t log_num);
static void _io_timer(uint32_t now);
};
#endif // DataFlash_File_h