ardupilot/libraries/AP_Logger/AP_Logger_Block.h

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2019-01-18 18:45:36 -04:00
/*
AP_Logger logging - block oriented variant
*/
#pragma once
#include "AP_Logger_Backend.h"
class AP_Logger_Block : public AP_Logger_Backend {
public:
AP_Logger_Block(AP_Logger &front, LoggerMessageWriter_DFLogStart *writer);
virtual void Init(void) override;
virtual bool CardInserted(void) const override = 0;
// erase handling
void EraseAll() override;
bool NeedPrep(void) override;
void Prep() override;
void PrepForArming() override;
// high level interface
uint16_t find_last_log() override;
void get_log_boundaries(uint16_t log_num, uint32_t & start_page, uint32_t & end_page) override;
void get_log_info(uint16_t log_num, uint32_t &size, uint32_t &time_utc) override;
int16_t get_log_data(uint16_t log_num, uint16_t page, uint32_t offset, uint16_t len, uint8_t *data) override;
uint16_t get_num_logs() override;
uint16_t start_new_log(void) override;
uint32_t bufferspace_available() override;
void stop_logging(void) override { log_write_started = false; }
bool logging_enabled() const override { return true; }
bool logging_failed() const override { return false; }
bool logging_started(void) const override { return log_write_started; }
protected:
/* Write a block of data at current offset */
bool _WritePrioritisedBlock(const void *pBuffer, uint16_t size, bool is_critical) override;
private:
/*
functions implemented by the board specific backends
*/
virtual void BufferToPage(uint32_t PageAdr) = 0;
virtual void PageToBuffer(uint32_t PageAdr) = 0;
virtual void SectorErase(uint32_t PageAdr) = 0;
virtual void StartErase() = 0;
virtual bool InErase() = 0;
struct PageHeader {
uint16_t FileNumber;
uint16_t FilePage;
};
HAL_Semaphore_Recursive sem;
ByteBuffer writebuf;
// state variables
uint16_t df_Read_BufferIdx;
uint32_t df_PageAdr;
uint32_t df_Read_PageAdr;
uint16_t df_FileNumber;
uint32_t df_FilePage;
// offset from adding FMT messages to log data
bool adding_fmt_headers;
// are we waiting on an erase to finish?
bool erase_started;
// read size bytes of data to a page. The caller must ensure that
// the data fits within the page, otherwise it will wrap to the
// start of the page
bool BlockRead(uint16_t IntPageAdr, void *pBuffer, uint16_t size);
// erase handling
bool NeedErase(void);
// internal high level functions
int16_t get_log_data_raw(uint16_t log_num, uint32_t page, uint32_t offset, uint16_t len, uint8_t *data);
void StartRead(uint32_t PageAdr);
uint32_t find_last_page(void);
uint32_t find_last_page_of_log(uint16_t log_number);
bool check_wrapped(void);
void StartWrite(uint32_t PageAdr);
void FinishWrite(void);
// Read methods
bool ReadBlock(void *pBuffer, uint16_t size);
// file numbers
void SetFileNumber(uint16_t FileNumber);
uint16_t GetFileNumber();
void _print_log_formats(AP_HAL::BetterStream *port);
// callback on IO thread
void io_timer(void);
protected:
// page handling
uint32_t df_PageSize;
uint16_t df_PagePerSector;
uint32_t df_NumPages;
bool log_write_started;
static const uint16_t page_size_max = 256;
uint8_t *buffer;
bool WritesOK() const override;
};