knx/src/samd_platform.h

#include "arduino_platform.h"

#include "Arduino.h"

#ifdef ARDUINO_ARCH_SAMD

#define PAGES_PER_ROW 4

class SamdPlatform : public ArduinoPlatform
{
    public:
        SamdPlatform();
        SamdPlatform( HardwareSerial* s);

        // unique serial number
        uint32_t uniqueSerialNumber() override;

        void restart();
#ifdef USE_SAMD_EEPROM_EMULATION
        uint8_t* getEepromBuffer(uint32_t size);
        void commitToEeprom();
#else
        // size of one EraseBlock in pages
        virtual size_t flashEraseBlockSize();
        // size of one flash page in bytes
        virtual size_t flashPageSize();
        // start of user flash aligned to start of an erase block
        virtual uint8_t* userFlashStart();
        // size of the user flash in EraseBlocks
        virtual size_t userFlashSizeEraseBlocks();
        // relativ to userFlashStart
        virtual void flashErase(uint16_t eraseBlockNum);
        // write a single page to flash (pageNumber relative to userFashStart
        virtual void flashWritePage(uint16_t pageNumber, uint8_t* data);

        // writes _eraseblockBuffer to flash - overrides Plattform::writeBufferedEraseBlock() for performance optimization only
        void writeBufferedEraseBlock();

    private:
        void init();
        uint32_t _MemoryEnd = 0;
        uint32_t _MemoryStart = 0;
        uint32_t _pageSize;
        uint32_t _rowSize;
        uint32_t _pageCnt;

        uint32_t getRowAddr(uint32_t flasAddr);
        void write(const volatile void* flash_ptr, const void* data, uint32_t size);
        void erase(const volatile void* flash_ptr, uint32_t size);
        void eraseRow(const volatile void* flash_ptr);

#endif
};

#endif