libraries/AP_Logger/AP_Logger_W25NXX.h

   1 /*
   2   logging for block based dataflash devices on SPI
   3  */
   4 #pragma once
   5
   6 #include "AP_Logger_config.h"
   7
   8 #if HAL_LOGGING_FLASH_W25NXX_ENABLED
   9
  10 #include <AP_HAL/AP_HAL.h>
  11
  12 #include "AP_Logger_Block.h"
  13
  14 class AP_Logger_W25NXX : public AP_Logger_Block {
  15 public:
  16     AP_Logger_W25NXX(AP_Logger &front, LoggerMessageWriter_DFLogStart *writer) :
  17         AP_Logger_Block(front, writer) {}
  18     static AP_Logger_Backend  *probe(AP_Logger &front,
  19                                      LoggerMessageWriter_DFLogStart *ls) {
  20         return NEW_NOTHROW AP_Logger_W25NXX(front, ls);
  21     }
  22     void              Init(void) override;
  23     bool              CardInserted() const override { return !flash_died && df_NumPages > 0; }
  24
  25 private:
  26     void              BufferToPage(uint32_t PageAdr) override;
  27     void              PageToBuffer(uint32_t PageAdr) override;
  28     void              SectorErase(uint32_t SectorAdr) override;
  29     void              Sector4kErase(uint32_t SectorAdr) override;
  30     void              StartErase() override;
  31     bool              InErase() override;
  32     void              send_command_addr(uint8_t cmd, uint32_t address);
  33     void              WaitReady();
  34     bool              Busy();
  35     uint8_t           ReadStatusRegBits(uint8_t bits);
  36     void              WriteStatusReg(uint8_t reg, uint8_t bits);
  37
  38     void              WriteEnable();
  39     bool              getSectorCount(void);
  40
  41     AP_HAL::OwnPtr<AP_HAL::SPIDevice> dev;
  42     AP_HAL::Semaphore *dev_sem;
  43
  44     uint32_t flash_blockNum;
  45
  46     bool flash_died;
  47     uint32_t erase_start_ms;
  48     uint16_t erase_block;
  49     bool read_cache_valid;
  50 };
  51
  52 #endif // HAL_LOGGING_FLASH_W25NXX_ENABLED