Diff: Adafruit_RGBLCDShield.h

Revision:

3:ed09f95739df

Child:

4:d70e37f6c6bd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Adafruit_RGBLCDShield.h	Sat Aug 02 12:39:25 2014 +0000
@@ -0,0 +1,133 @@
+/*************************************************** 
+  This is a library for the Adafruit RGB 16x2 LCD Shield 
+  Pick one up at the Adafruit shop!
+  ---------> http://http://www.adafruit.com/products/714
+
+  The shield uses I2C to communicate, 2 pins are required to  
+  interface
+  Adafruit invests time and resources providing this open source code, 
+  please support Adafruit and open-source hardware by purchasing 
+  products from Adafruit!
+
+  Written by Limor Fried/Ladyada for Adafruit Industries.  
+  BSD license, all text above must be included in any redistribution
+ ****************************************************/
+
+#ifndef Adafruit_RGBLCDShield_h
+#define Adafruit_RGBLCDShield_h
+
+#include <inttypes.h>
+#include "MCP23017.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
+
+#define BUTTON_UP 0x08
+#define BUTTON_DOWN 0x04
+#define BUTTON_LEFT 0x10
+#define BUTTON_RIGHT 0x02
+#define BUTTON_SELECT 0x01
+
+
+class Adafruit_RGBLCDShield
+//    : public Print
+{
+public:
+  Adafruit_RGBLCDShield();
+
+  void init(uint8_t fourbitmode, uint8_t rs, uint8_t rw, uint8_t enable,
+        uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3,
+        uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7);
+    
+  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 leftToRight();
+  void rightToLeft();
+  void autoscroll();
+  void noAutoscroll();
+  
+  // only if using backpack
+  void setBacklight(uint8_t status); 
+
+  void createChar(uint8_t, uint8_t[]);
+  void setCursor(uint8_t, uint8_t); 
+#if ARDUINO >= 100
+  virtual size_t write(uint8_t);
+#else
+  virtual void write(uint8_t);
+#endif
+  void command(uint8_t);
+  uint8_t readButtons();
+
+private:
+  void send(uint8_t, uint8_t);
+  void write4bits(uint8_t);
+  void write8bits(uint8_t);
+  void pulseEnable();
+  void _digitalWrite(uint8_t, uint8_t);
+  void _pinMode(uint8_t, uint8_t);
+
+  uint8_t _rs_pin; // LOW: command.  HIGH: character.
+  uint8_t _rw_pin; // LOW: write to LCD.  HIGH: read from LCD.
+  uint8_t _enable_pin; // activated by a HIGH pulse.
+  uint8_t _data_pins[8];
+  uint8_t _button_pins[5];
+  uint8_t _displayfunction;
+  uint8_t _displaycontrol;
+  uint8_t _displaymode;
+
+  uint8_t _initialized;
+
+  uint8_t _numlines,_currline;
+
+  uint8_t _i2cAddr;
+  MCP20317 _i2c;
+};
+
+#endif