Diff: TriPinLcd.h

Revision:

0:9cf8e8a3a8d6

diff -r 000000000000 -r 9cf8e8a3a8d6 TriPinLcd.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TriPinLcd.h	Fri Jun 20 01:07:06 2014 +0000
@@ -0,0 +1,190 @@
+/** this is for HD44780 compatible 16x2 charachter LCD with HC595 by bitbanging
+* by Kazuki Yamamoto, or _K4ZUKI_
+*/
+
+#ifndef __TRIPINLCD_H__
+#define __TRIPINLCD_H__
+
+#include <inttypes.h>
+#include "mbed.h"
+#include "ShiftOut.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_3WIERMODE 0x20
+#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 SHIFT_RS (0x02) //B00000010
+#define SHIFT_RS (0x01) //B00000010
+#define SHIFT_EN (0x08) //B00001000
+
+#define DATA_BYTE (1)
+#define CMND_BYTE (0)
+
+/** tripinLcd
+ * mbed library for HD44780 compatible charachter LCD with HC595 by bitbanging
+ *
+ * Example:
+ * @code
+#include "mbed.h"
+#include "TriPinLcd.h"
+
+Timer t;
+TriPinLcd lcd(p5,p7,p6);//clk = p7, data = p5, latch = p6
+
+int main()
+{
+
+    lcd.begin(16, 2);
+    lcd.noBlink();
+
+    lcd.printf("LCD3WIRE mbed");
+    t.start();
+    while(1) {
+        lcd.setCursor(0, 1);
+//        lcd.printf("%.0f", t.read());
+        lcd.printf("%d", t.read_us());
+    }
+}
+
+ * @endcode
+ */
+
+class TriPinLcd : public Stream
+{
+
+public:
+    /** Constructor
+    * @param data data input
+    * @param clock clock input
+    * @param latch latches HC595 and sends data to LCD
+    */
+    TriPinLcd(PinName data, PinName clock, PinName latch);
+
+    void begin(uint8_t cols, uint8_t rows, uint8_t dotsize = LCD_5x8DOTS);
+    
+    /**
+    clears display, set cursor position to zero
+    */
+    void clear();
+    
+    /**
+    set cursor position to zero
+    */
+    void home();
+    /**
+     Turn the display off
+    */
+    void noDisplay();
+    /**
+     Turn the display on
+    */
+    void display();
+    /**
+    Turns off the blinking cursor
+    */
+    void noBlink();
+    /**
+    Turns on the blinking cursor
+    */
+    void blink();
+    /**
+    Turns the underline cursor off
+    */
+    void noCursor();
+    /**
+    Turns the underline cursor on
+    */
+    void cursor();
+    /**
+    scroll the display to left without changing the RAM
+    */
+    void scrollDisplayLeft();
+    /**
+    scroll the display to right without changing the RAM
+    */
+    void scrollDisplayRight();
+    /**
+    This is for text that flows Left to Right
+    */
+    void leftToRight();
+    /**
+    This is for text that flows Right to Left
+    */
+    void rightToLeft();
+    /**
+    This will 'right justify' text from the cursor
+    */
+    void autoscroll();
+    /**
+    This will 'left justify' text from the cursor
+    */
+    void noAutoscroll();
+
+    /**
+    Allows us to fill the first 8 CGRAM locations
+    with custom characters
+    */
+    void createChar(uint8_t, uint8_t[]);
+    /**
+    set cursor position to (x=col,y=row); (0,0) is left-top
+    @param col X position
+    @param row Y position
+    */
+    void setCursor(uint8_t, uint8_t);
+
+
+private:
+    ShiftOut::ShiftOut _lcd;
+    void _write(uint8_t);
+    void _command(uint8_t);
+
+    virtual int _putc(int value);
+    virtual int _getc();
+
+    void _send(uint8_t, uint8_t);
+    void _write4bits(uint8_t);
+
+    uint8_t _displayfunction;
+    uint8_t _displaycontrol;
+    uint8_t _displaymode;
+
+    uint8_t _numlines,_currline;
+
+};
+
+#endif
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