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42 pfowler 1 
#ifndef lcd_h
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#define lcd_h
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#define LCD_ADDR        0x27
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#define LCD_CLEARDISPLAY        0x01
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#define LCD_RETURNHOME          0x02
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#define LCD_DISPLAYCONTROL      0x08
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#define LCD_FUNCTIONSET         0x20
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#define LCD_DISPLAYON           0x04
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#define LCD_DISPLAYOFF          0x00
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#define LCD_CURSORON            0x02
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#define LCD_CURSOROFF           0x00
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#define LCD_BLINKON             0x01
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#define LCD_BLINKOFF            0x00
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#define LCD_4BITMODE            0x10
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#define LCD_2LINE               0x08
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#define LCD_5x8DOTS             0x00
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#define LCD_MODE_CM     0x00                    // Command line
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#define LCD_MODE_RS     0x01                    // Write line
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#define LCD_MODE_RW     0x02                    // Read line
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#define LCD_MODE_EN     0x04                    // Enable line
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void lcd_init(void);
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void lcd_command(uint8_t);
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void lcd_char(uint8_t data);
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void lcd_send(uint8_t, uint8_t);
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void lcd_sendNib(uint8_t);
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void lcd_write(uint8_t);
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void lcd_pulse(uint8_t);
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#endif