Diff: LiquidCrystal_I2C.h

Revision:

0:1202bdc184ed

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LiquidCrystal_I2C.h	Wed Aug 17 02:54:57 2022 +0000
@@ -0,0 +1,127 @@
+// YWROBOT
+#ifndef LiquidCrystal_I2C_h
+#define LiquidCrystal_I2C_h
+#include "Print.h"
+#include "mbed.h"
+#include <inttypes.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 0B00000100 // Enable bit
+#define Rw 0B00000010 // Read/Write bit
+#define Rs 0B00000001 // Register select bit
+
+class LiquidCrystal_I2C : public Print {
+public:
+  LiquidCrystal_I2C(uint8_t lcd_Addr, uint8_t lcd_cols, uint8_t lcd_rows,
+                    PinName sda, PinName scl);
+  void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS);
+  void clear();
+  void home();
+  void noDisplay();
+  void display();
+  void noBlink();
+  void blink();
+  void noCursor();
+  void cursor();
+  void scrollDisplayLeft();
+  void scrollDisplayRight();
+  void printLeft();
+  void printRight();
+  void leftToRight();
+  void rightToLeft();
+  void shiftIncrement();
+  void shiftDecrement();
+  void noBacklight();
+  void backlight();
+  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);
+  void init();
+
+  ////compatibility API function aliases
+  void blink_on();                    // alias for blink()
+  void blink_off();                   // alias for noBlink()
+  void cursor_on();                   // alias for cursor()
+  void cursor_off();                  // alias for noCursor()
+  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[]);
+
+  ////Unsupported API functions (not implemented in this library)
+  uint8_t status();
+  void setContrast(uint8_t new_val);
+  uint8_t keypad();
+  void setDelay(int, int);
+  void on();
+  void off();
+  uint8_t init_bargraph(uint8_t graphtype);
+  void draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len,
+                             uint8_t pixel_col_end);
+  void draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len,
+                           uint8_t pixel_col_end);
+
+private:
+  mbed::I2C *i2c;
+  void init_priv();
+  void begin_priv(uint8_t charsize = LCD_5x8DOTS);
+  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 _numlines;
+  uint8_t _cols;
+  uint8_t _rows;
+  uint8_t _backlightval;
+};
+
+#endif