src/Flash.h

   1 #ifndef AVR_FLASH_H
   2 #define AVR_FLASH_H
   3
   4 #include "Hardware.h"
   5 #include "Memory.h"
   6 #include <vector>
   7
   8 namespace avr {
   9
  10         class Instruction;
  11
  12         /**
  13          * @author Tom Haber
  14          * @date Apr 21, 2008
  15          * @brief Flash memory in the AVR chip
  16          *
  17          * This class represents the Flash memory in the chip.
  18          * It allows read and write operations
  19          */
  20         class Flash : public Hardware, public Memory {
  21                 public:
  22                         Flash(Bus & bus, unsigned int size, int pagesize);
  23                         ~Flash();
  24
  25                 public:
  26                         /**
  27                          * Fill a block of flash memory with the specified value.
  28                          *
  29                          * \exception AccessViolation { When the write exceeds
  30                          *              amount of memory, this exception is thrown }
  31                          */
  32                         void fill(unsigned int offset, byte val, unsigned int size = 1);
  33
  34                 public:
  35                         void storeProgramMemory(dword Z, byte r0, byte r1);
  36
  37                 private:
  38                         void pageErase();
  39                         void pageWrite();
  40                         void resetRWW();
  41
  42                 public:
  43                         bool attachReg(const char *name, IORegister *reg);
  44                         bool finishBuild();
  45                         void regChanged( IORegister *reg );
  46                         void step();
  47
  48                 private:
  49                         // For reprogramming..
  50                         IORegister *spmcsr;
  51                         int pagebits;
  52                         int pagemask;
  53
  54                         unsigned char *buffer;
  55                         int pageoffset;
  56                         int pagenum;
  57                         int state;
  58         };
  59
  60 }
  61
  62 #endif /*AVR_FLASH_H*/