/*----- i2cLCD_AQM0802A.c ------*/

#include "i2cLCD_AQM0802A.h"

#define CONTRAST   	0x18  // for 5.0V
//#define  CONTRAST 	0x30  // for 3.3V
#define BOOST       	0x00  // for 5.0V Bon=off
//#define  BOOST  	0x04  // for 3.3V Bon=on

//-------- send data -------------------------
void LCD_dat(char chr){
    I2C_Write1ByteRegister(I2CLCD_AQM0802A, 0x40, chr);
    __delay_us(30); 			// 30us
}

//-------- send command -------------------------
void LCD_cmd(char cmd){
    I2C_Write1ByteRegister(I2CLCD_AQM0802A, 0x00, cmd);
    if(cmd & 0xFC)		// bit6 = 1
        __delay_us(30); 	// 30us
    else
        __delay_ms(2);	// 2ms Clear or Home
}

//-------- clear LCD--------------------------
void LCD_clr(void){
    LCD_cmd(0x01);
}

//--------- Home -----------------------------
void LCD_home(void){
    LCD_cmd(0x02);
}

//--------- Cursor X,Y -----------------------
void LCD_cursor(int x, int y){
    if (y == 0)
        LCD_cmd(0x80 + x);
    else if (y == 1)
        LCD_cmd(0xc0 + x);
}

//-------- display strings -------------------------
void LCD_str(char *str){
    while(*str)
 	LCD_dat(*str++); //pointer increment
}

//-------- write 1 character to LCD ----------------
void putch(char ch){
    LCD_dat(ch);
}

//-------- LCD initialize ---------------------------
void LCD_init(){
    __delay_ms(40);    	//40ms wait
    LCD_cmd(0x38);  	//8bit,2line
    LCD_cmd(0x39);   	//IS=1 : extention mode
    LCD_cmd(0x14);     //Internal OSC Frequency
    LCD_cmd(0x70+(CONTRAST & 0x0F)); 
    LCD_cmd(0x58+BOOST+(CONTRAST>>4)); 	    LCD_cmd(0x6C);     //Follower control
    __delay_ms(200);     //200ms wait
    LCD_cmd(0x38); //IS=0:extention mode cancel
    LCD_cmd(0x0C);     //Display ON
    LCD_cmd(0x01);     //Clear Display
    __delay_ms(2);      //wait more than 1.08ms
}
/********  End of File ******/