SegLCD_PCF85176_4DR821B.h

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#ifndef SEGLCD_PCF85176_4DR821B_H
#define SEGLCD_PCF85176_4DR821B_H
 
#include <Wire.h>
#include <SegDriver_PCx85.h>
 
class SegLCD_PCF85176_4DR821B : public SegDriver_PCF85176 {
    public:
        typedef enum {
            SYMBOL_ARROW = 0x10,
            SYMBOL_TILDA = 0x80
        } SymbolFlags;
 
        SegLCD_PCF85176_4DR821B(TwoWire& i2c, uint8_t address = DEFAULT_PCF85176_I2C_ADDRESS, uint8_t subaddress = DEFAULT_SUBADDRESS);
        void init() override;
        void setSymbol(uint8_t symbol, bool state);
        void setCursor(uint8_t row, uint8_t col) override;
        size_t write(uint8_t ch) override;
 
    private:
        void _setColon(uint8_t row, uint8_t col, bool state) override;
        void _setDecimal(uint8_t row, uint8_t col, bool state) override;
        void _setCol0Symbol(uint8_t ch);
        bool _handleCol0Overlay(uint8_t ch);
        static constexpr uint8_t RAM_SIZE = 5;
 
        static constexpr uint8_t FLAG_COLON_DISPLAYED = 0x01;
        static constexpr uint8_t FLAG_COL0_OVERLAY = 0x02;
 
        static constexpr uint8_t ADDR_SYMBOLS = 0x00;
        static constexpr uint8_t ADDR_SEGS = 0x01;
        static constexpr uint8_t DIGITS = 4;
        static constexpr uint8_t DECIMAL_POINT_BIT = 0x01;
        static constexpr uint8_t MIDDLE_COLON_BIT = 0x01;
        static constexpr uint8_t LEFT_COLON_BIT = 0x20;
        static constexpr uint8_t MINUS_BIT = 0x40;
        static constexpr uint8_t DECIMAL_MIN_COL = 0;
        static constexpr uint8_t DECIMAL_MAX_COL = 2;
        static constexpr int8_t DECIMAL_COL_OFFSET = -1;
};
#endif