Arduino-LiquidCrystal-I2C-library/LiquidCrystal_I2C.h At Master

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165 lines (142 loc) · 4.26 KBRaw123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165#ifndef FDB_LIQUID_CRYSTAL_I2C_H#define FDB_LIQUID_CRYSTAL_I2C_H #include <inttypes.h>#include <Print.h> // commands#define LCD_CLEARDISPLAY 0x01#define LCD_RETURNHOME 0x02#define LCD_ENTRYMODESET 0x04#define LCD_DISPLAYCONTROL 0x08#define LCD_CURSORSHIFT 0x10#define LCD_FUNCTIONSET 0x20#define LCD_SETCGRAMADDR 0x40#define LCD_SETDDRAMADDR 0x80 // flags for display entry mode#define LCD_ENTRYRIGHT 0x00#define LCD_ENTRYLEFT 0x02#define LCD_ENTRYSHIFTINCREMENT 0x01#define LCD_ENTRYSHIFTDECREMENT 0x00 // flags for display on/off control#define LCD_DISPLAYON 0x04#define LCD_DISPLAYOFF 0x00#define LCD_CURSORON 0x02#define LCD_CURSOROFF 0x00#define LCD_BLINKON 0x01#define LCD_BLINKOFF 0x00 // flags for display/cursor shift#define LCD_DISPLAYMOVE 0x08#define LCD_CURSORMOVE 0x00#define LCD_MOVERIGHT 0x04#define LCD_MOVELEFT 0x00 // flags for function set#define LCD_8BITMODE 0x10#define LCD_4BITMODE 0x00#define LCD_2LINE 0x08#define LCD_1LINE 0x00#define LCD_5x10DOTS 0x04#define LCD_5x8DOTS 0x00 // flags for backlight control#define LCD_BACKLIGHT 0x08#define LCD_NOBACKLIGHT 0x00 #define En B00000100 // Enable bit#define Rw B00000010 // Read/Write bit#define Rs B00000001 // Register select bit /** * This is the driver for the Liquid Crystal LCD displays that use the I2C bus. * * After creating an instance of this class, first call begin() before anything else. * The backlight is on by default, since that is the most likely operating mode in * most cases. */class LiquidCrystal_I2C : public Print {public: /** * Constructor * * @param lcd_addr I2C slave address of the LCD display. Most likely printed on the * LCD circuit board, or look in the supplied LCD documentation. * @param lcd_cols Number of columns your LCD display has. * @param lcd_rows Number of rows your LCD display has. * @param charsize The size in dots that the display has, use LCD_5x10DOTS or LCD_5x8DOTS. */ LiquidCrystal_I2C(uint8_t lcd_addr, uint8_t lcd_cols, uint8_t lcd_rows, uint8_t charsize = LCD_5x8DOTS); /** * Set the LCD display in the correct begin state, must be called before anything else is done. */ void begin(); /** * Remove all the characters currently shown. Next print/write operation will start * from the first position on LCD display. */ void clear(); /** * Next print/write operation will will start from the first position on the LCD display. */ void home(); /** * Do not show any characters on the LCD display. Backlight state will remain unchanged. * Also all characters written on the display will return, when the display in enabled again. */ void noDisplay(); /** * Show the characters on the LCD display, this is the normal behaviour. This method should * only be used after noDisplay() has been used. */ void display(); /** * Do not blink the cursor indicator. */ void noBlink(); /** * Start blinking the cursor indicator. */ void blink(); /** * Do not show a cursor indicator. */ void noCursor(); /** * Show a cursor indicator, cursor can blink on not blink. Use the * methods blink() and noBlink() for changing cursor blink. */ void cursor(); void scrollDisplayLeft(); void scrollDisplayRight(); void printLeft(); void printRight(); void leftToRight(); void rightToLeft(); void shiftIncrement(); void shiftDecrement(); void noBacklight(); void backlight(); bool getBacklight(); void autoscroll(); void noAutoscroll(); void createChar(uint8_t, uint8_t[]); void setCursor(uint8_t, uint8_t); virtual size_t write(uint8_t); void command(uint8_t); inline void blink_on() { blink(); } inline void blink_off() { noBlink(); } inline void cursor_on() { cursor(); } inline void cursor_off() { noCursor(); } // Compatibility API function aliases void setBacklight(uint8_t new_val); // alias for backlight() and nobacklight() void load_custom_character(uint8_t char_num, uint8_t *rows); // alias for createChar() void printstr(const char[]); private: void send(uint8_t, uint8_t); void write4bits(uint8_t); void expanderWrite(uint8_t); void pulseEnable(uint8_t); uint8_t _addr; uint8_t _displayfunction; uint8_t _displaycontrol; uint8_t _displaymode; uint8_t _cols; uint8_t _rows; uint8_t _charsize; uint8_t _backlightval;}; #endif // FDB_LIQUID_CRYSTAL_I2C_H You can’t perform that action at this time.