/**
* Initialize the LCD driver.
*
* @param cur Cursor ON/OFF.
* @param blk Blinking cursor ON/OFF.
*/
void lcd_init(bool cur, bool blk) {
// Setup the pins and wait for the driver to stabilize.
lcd_setup();
delay_ms(45);
// Initialization. For more information about this madness check page
// 46 of the datasheet.
lcd_init_function_set();
delay_us(4500);
lcd_init_function_set();
delay_us(150);
lcd_init_function_set();
lcd_function_set(); // The last madness.
lcd_display_control(TRUE, cur, blk);
_lcd_clear();
lcd_entry_mode();
}
int _lcd_enable()
// function to enable the 6wire lcd interface
{
// intialize with three 'Function Set' commands
wait(100);
_lcd_control( 0x30, 5 );
_lcd_control( 0x30, 1 );
_lcd_control( 0x30, 1 );
_lcd_control( 0x20, 1 ); // Put it into 4bit mode
_lcd_control( 0x20, 1 ); _lcd_control( 0x80, 1 ); // N=1(2lines), F=0(5x7) , 0,0
_lcd_control( 0x00, 1 ); _lcd_control( 0x80, 1 ); // Enable Disp,Curs : 1, D=0(disp off), C=0(Crs off), B=0(Blnk off)
_lcd_control( 0x00, 1 ); _lcd_control( 0xC0, 1 ); // Enable Disp,Curs : 1, D=0(disp off), C=0(Crs off), B=0(Blnk off)
_lcd_control( 0x00, 1 ); _lcd_control( 0x60, 1 ); // 'Entry Mode Set' : 0, 1, ID=1(inc curs), S=0(shift dsp off)
_lcd_clear();
}
/** Initial Display settings! */
void _lcd_begin(u8 lines, u8 dotsize)
{
if (lines > 1)
_displayfunction |= LCD_2LINE;
_numlines = lines;
_currline = 0;
// Some one line displays can select 10 pixel high font
if ((dotsize != 0) && (lines == 1))
_displayfunction |= LCD_5x10DOTS;
Delayms(15); //Pinguino needs it? long delay on startup time!
// Now we pull both RS and R/W low to begin commands
digitalwrite(_rs_pin, LOW);
digitalwrite(_enable_pin, LOW);
//put the LCD into 4 bit mode
if (! (_displayfunction & LCD_8BITMODE) )
{
// this is according to the hitachi HD44780 datasheet p46, figure 24
// we start in 8bit mode, try to set 4 bit mode
_lcd_write4bits(0x03);
Delayms(5); // wait min 4.1ms
// second try
_lcd_write4bits(0x03);
Delayus(150); // wait min 4.1ms
// third go!
_lcd_write4bits(0x03);
Delayus(150);
// finally, set to 8-bit interface
_lcd_write4bits(0x02);
}
//put the LCD into 8 bit mode
else
{
// this is according to the hitachi HD44780 datasheet p45, figure 23
// Send function set command sequence
_lcd_command(LCD_FUNCTIONSET | _displayfunction);
Delayus(4500); // wait more than 4.1ms
// second try
_lcd_command(LCD_FUNCTIONSET | _displayfunction);
Delayus(150);
// third go
_lcd_command(LCD_FUNCTIONSET | _displayfunction);
}
// finally, set # lines, font size, etc.
_lcd_command(LCD_FUNCTIONSET | _displayfunction);
// turn the display on with no cursor or blinking default
_displaycontrol = LCD_DISPLAYON | LCD_CURSOROFF | LCD_BLINKOFF;
_lcd_display();
// clear it off
_lcd_clear();
// Initialize to default text direction (for romance languages)
_displaymode = LCD_ENTRYLEFT | LCD_ENTRYSHIFTDECREMENT;
// set the entry mode
_lcd_command(LCD_ENTRYMODESET | _displaymode);
}
/**
* Clears the LCD with the correct delay.
*/
void lcd_clear() {
_lcd_clear();
delay_ms(1);
}
