EepromAbstractionWire.h

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/*
 * Copyright (c) 2018 https://www.thecoderscorner.com (Dave Cherry).
 * This product is licensed under an Apache license, see the LICENSE file in the top-level directory.
 */
 
#ifndef IOABSTRACTION_EEPROMABSTRACTIONWIRE_H_
#define IOABSTRACTION_EEPROMABSTRACTIONWIRE_H_
 
#include "PlatformDeterminationWire.h"
#include "EepromAbstraction.h"
#include "TaskManager.h"
 
enum At24EepromType {
    PAGESIZE_AT24C01,
    PAGESIZE_AT24C02,
    PAGESIZE_AT24C04,
    PAGESIZE_AT24C08,
    PAGESIZE_AT24C16,
    PAGESIZE_AT24C32,
    PAGESIZE_AT24C64,
    PAGESIZE_AT24C128,
    PAGESIZE_AT24C256,
    PAGESIZE_AT24C512
};
 
size_t at24ActualSizeFromRomSize(At24EepromType size);
 
uint8_t at24PageFromRomSize(At24EepromType size);
 
class I2cAt24Eeprom : public EepromAbstraction {
    WireType wireImpl;
    uint8_t  eepromAddr;
    bool     errorOccurred;
    uint8_t  pageSize;
    size_t   eepromSize;
public:
    I2cAt24Eeprom(uint8_t address, At24EepromType ty, WireType wireImpl = defaultWireTypePtr);
    ~I2cAt24Eeprom() override = default;
 
    bool hasErrorOccurred() override;
 
    uint8_t read8(EepromPosition position) override;
    void write8(EepromPosition position, uint8_t val) override;
 
    uint16_t read16(EepromPosition position) override;
    void write16(EepromPosition position, uint16_t val) override;
 
    uint32_t read32(EepromPosition position) override;
    void write32(EepromPosition position, uint32_t val) override;
 
    void readIntoMemArray(uint8_t* memDest, EepromPosition romSrc, uint8_t len) override;
    void writeArrayToRom(EepromPosition romDest, const uint8_t* memSrc, uint8_t len) override;
private:
    uint8_t findMaximumInPage(uint16_t romDest, uint8_t len) const;
    void writeByte(EepromPosition position, uint8_t val);
    uint8_t readByte(EepromPosition position);
    void writeAddressWire(uint16_t memAddr, const uint8_t* data = nullptr, int len = 0);
};
 
#endif /* IOABSTRACTION_EEPROMABSTRACTIONWIRE_H_ */