Library for LCD HD44780.

This library allows  control Liquid Crystal displays (LCDs) based on the Hitachi HD44780 (or a compatible). The library works with in 4 bit mode interface.

Brian Hicks made an evaluation of this code. 

Video.

Description of library.
 
void Lcd_Init(void)
This function initializes the Lcd module.
Note: You can change the connection of lcd module in hd44780.h  file.
Example:
Lcd_Init();
Lcd_Command(LCD_CLEAR);

void Lcd_ConstText(y, x, buffer)
This function prints text  constant on the Lcd.

• y: Starting position row number. Valid values: 1, 2, 3, 4
• x: Starting position column number. Valid values: 1..20
• buffer: Byte of array

Example:
Lcd_ConstText(2, 1, "Hello World");

void Lcd_Text(y, x, buffer)
This function prints text on the Lcd.

• y: Starting position row number. Valid values: 1, 2, 3, 4
• x: Starting position column number. Valid values: 1..20
• buffer: Byte of array

Example:
int i = 50;
char buffer1[20];
sprintf(buffer1,"%3d",i);
Lcd_Text(1, 1, buffer1);

void Lcd_WriteChar(y, x, c)
This function prints a character on the Lcd.

• y: Starting position row number. Valid values: 1, 2, 3, 4
• x: Starting position column number. Valid values: 1..20
• c: Character to be written

Example:
Lcd_WriteChar(1, 4, 'H');

void Lcd_CharCP(c)
This function prints text on Lcd at current cursor position.

• c: character to be written

Example:
Lcd_CharCP('R');

void Lcd_Command(command)
This function sends command to Lcd.

• command: command to be sent

Example:
Lcd_Command(LCD_BLINK_CURSOR_ON);
// Note: All commands available are in file hd44780.h

Schematic.

Direct Download.
 
Schematic.