src/SRam.h

   1 #ifndef AVR_SRAM_H
   2 #define AVR_SRAM_H
   3
   4 #include "Memory.h"
   5
   6 namespace avr {
   7
   8         /**
   9          * @author Tom Haber
  10          * @date Apr 23, 2008
  11          * @brief Static ram inside the AVR chip.
  12          *
  13          * The static ram inside the chip, provides an interface
  14          * for reading and writing. This interface is used by the MMU.
  15          */
  16         class SRam : public Memory {
  17                 public:
  18                         SRam(unsigned int size);
  19
  20                 public:
  21                         /**
  22                          * Reads a single bytes of raw data from memory at
  23                          * offset \e offset.
  24                          *
  25                          * \exception AccessViolation { When the data requested is
  26                          *              not available, this exception is thrown }
  27                          */
  28                         void writeByte(unsigned int offset, byte val);
  29
  30                         /**
  31                          * Reads a word of raw data from memory starting at
  32                          * offset \e offset.
  33                          *
  34                          * \exception AccessViolation { When the data requested is
  35                          *              not available, this exception is thrown }
  36                          */
  37                         void writeWord(unsigned int offset, word val);
  38         };
  39
  40         inline SRam::SRam(unsigned int size) : Memory(size) {
  41                 fill(0);
  42         }
  43
  44         inline void SRam::writeByte(unsigned int offset, byte val) {
  45                 write(offset, &val, 1);
  46         }
  47
  48         inline void SRam::writeWord(unsigned int offset, word val) {
  49                 write(offset, (unsigned char *)&val, 2);
  50         }
  51
  52 }
  53
  54 #endif /*AVR_SRAM_H*/