#ifndef LCD_H_
#define LCD_H_

#define RS_PIN      0
#define RW_PIN      1
#define EN_PIN      2

#define RS_PORT PORTC
#define RW_PORT PORTC
#define EN_PORT PORTC

#define RS_DDR      DDRC
#define RW_DDR      DDRC
#define EN_DDR      DDRC

#define LCD_1_LINE_ADDR 0x80
#define LCD_2_LINE_ADDR 0xC0
#define LCD_3_LINE_ADDR 0x94
#define LCD_4_LINE_ADDR 0xD4

//if defined LCD4, use 4-bit interface, else use 8-bit interface
#define LCD4

void LCDInit(void);

void LCDBusy(void);
void LCDData(unsigned char data);
void LCDCommand(unsigned char cmd);

inline void LCDSetPosition(unsigned char line, unsigned char col)
{
    LCDBusy();

    unsigned char addr;
    switch(line)
    {
        case 1: addr=LCD_1_LINE_ADDR; break;
        case 2: addr=LCD_2_LINE_ADDR; break;
        case 3: addr=LCD_3_LINE_ADDR; break;
        case 4: addr=LCD_4_LINE_ADDR; break;
        default:    addr=LCD_1_LINE_ADDR;
    }
    addr+=col;
    LCDCommand(addr);
}

inline void LCDWriteChar(char ch)
{
    LCDBusy();
    LCDData(ch);
}

void LCDWriteString(char* str, unsigned char strLen);
void LCDWriteStringZ(char* str);

#endif  LCD_H_