Project 5
Character Liquid-Crystal Display
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hd44780.h
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#ifndef HD44780_H_
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#define HD44780_H_
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// Clear display
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#define HD44780_CLEARDISPLAY 0x01
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// Return home
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#define HD44780_RETURNHOME 0x02
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// Entry mode set
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#define HD44780_ENTRYMODESET 0x04
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#define HD44780_INCREMENT 0x02
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#define HD44780_DECREMENT 0x00
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#define HD44780_SHIFTON 0x01
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#define HD44780_SHIFTOFF 0x00
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// Display on/off control
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#define HD44780_DISPLAYCONTROL 0x08
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#define HD44780_DISPLAYON 0x04
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#define HD44780_DISPLAYOFF 0x00
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#define HD44780_CURSORON 0x02
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#define HD44780_CURSOROFF 0x00
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#define HD44780_BLINKON 0x01
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#define HD44780_BLINKOFF 0x00
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// Cursor or display shift
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#define HD44780_CURSORCONTROL 0x10
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#define HD44780_DISPLAYSHIFT 0x08
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#define HD44780_CURSORMOVE 0x00
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#define HD44780_RIGHT 0x04
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#define HD44780_LEFT 0x00
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// Function set
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#define HD44780_FUNCTIONSET 0x20
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#define HD44780_8BITMODE 0x10
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#define HD44780_4BITMODE 0x00
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#define HD44780_2LINES 0x08
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#define HD44780_1LINE 0x00
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#define HD44780_5x10DOTS 0x04
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#define HD44780_5x8DOTS 0x00
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// Set CGRAM address
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#define HD44780_SETCGRAMADDR 0x40
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#define HD44780_CGRAMADDR(ADDR) ((ADDR) & 0x3F)
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// Set DDRAM address
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#define HD44780_SETDDRAMADDR 0x80
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#define HD44780_DDRAMADDR(ADDR) ((ADDR) & 0x7F)
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#endif
/* HD44780_H_ */
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