#define F_CPU 8000000UL
#include <avr/io.h>
#include <util/delay.h>
#define SetBit(x,y) (x|=y)
#define ClrBit(x,y) (x&=~y)
#define NOP() asm("nop")
#define blink 1
#define no_blink 0
#define cursor 1
#define no_cursor 0
#define GraphicMode 1
#define TextMode 0
//--------------------------------------
#define DDRData DDRB
#define DDRCtrl DDRC
#define PORTData PORTB
#define PORTCtrl PORTC
#define PINData PINB
#define RS 0b00000001
#define E 0b00000010
#define RW 0b00000100
#define RST 0b00001000
#define CS 0b00010000
//*********************************************
void init();
void GoThenNoBusy();
void SetMode(unsigned short GraphicModeON,unsigned short blinkON, short unsigned cursorON);
void Command(unsigned Com);
void Data(unsigned _Data);
void Print (unsigned _Data);
//**********************************************
short unsigned Busy=1;
//------------------------------------------
int main()
{
DDRCtrl=0xFF;
DDRData=0xFF;
init();
Print(0xCC);
Print(0xCC);
Print(0x33);
Print(0x33);
while(1)
{
NOP() ;
}
return 0;
}
//***************************************
void init()
{
ClrBit(PORTCtrl, CS);//CS=0;
//RESET display
ClrBit(PORTCtrl, RST);
_delay_ms(2);
SetBit(PORTCtrl, RST);
_delay_ms(2);
//
GoThenNoBusy();
SetMode(GraphicMode, no_blink, no_cursor);
Command(0x01);//
Data(0x07);//HP=8, HP-1=7=0x07
Command(0x02);
Data(0x1D);//n=HP*HN, n=240 => HN=30, HN-1=29=0x1D
Command(0x03);//
Data(0x3F);//Nx=64, Nx-1=63=0x3F
// Command(0x04);//
Command(0x08);
Data(0x00);
Command(0x09);
Data(0x00);
Command(0x0A);
Data(0x00);
Command(0x0B);
Data(0x00);
}
//---------------------------------------
void GoThenNoBusy()
{
PORTData=0x00;
DDRData=0x00; //
ClrBit(PORTCtrl,E); //0
SetBit(PORTCtrl,RW); //1
SetBit(PORTCtrl,RS); //1
NOP();
NOP();
SetBit(PORTCtrl,E); //1
Busy=1;
NOP();
NOP();
_delay_us(4);
while (Busy)
{
Busy=(0x80&PINData);
ClrBit(PORTCtrl,E); //0
_delay_us(4);
SetBit(PORTCtrl,E); //1
_delay_us(4);
}
ClrBit(PORTCtrl,E);//0
DDRData=0xFF;
NOP();
NOP();
}
//-----------------------------------------------------------------
void SetMode(unsigned short GraphicModeON,unsigned short blinkON,unsigned short cursorON)
{
GoThenNoBusy();
ClrBit(PORTCtrl,E);
SetBit(PORTCtrl,RS);//1
ClrBit(PORTCtrl,RW);//0
PORTData=0x00;
SetBit(PORTCtrl,E);//1
_delay_us(4);
ClrBit(PORTCtrl,E);//0
GoThenNoBusy();
ClrBit(PORTCtrl,RS);//=0
SetBit(PORTData,5);//display on
SetBit(PORTData,4);//master
if (blinkON) SetBit(PORTData,3);
if (cursorON) SetBit(PORTData,2);
if (GraphicModeON) SetBit(PORTData,1);
//ClrBit(PORTData,0);
NOP();
NOP();
SetBit(PORTCtrl,E);//1
_delay_us(4);
ClrBit(PORTCtrl,E);//0
_delay_us(4);
}
//-------------------------------------------
void Command (unsigned Com)
{
GoThenNoBusy();
ClrBit(PORTCtrl,E);
SetBit(PORTCtrl,RS);//1
ClrBit(PORTCtrl,RW);//0
PORTData=Com;
NOP();
NOP();
SetBit(PORTCtrl,E);//1
_delay_us(4);
ClrBit(PORTCtrl,E);//0
_delay_us(4);
}
//-----------------------------------------
void Data(unsigned _Data)
{
GoThenNoBusy();
ClrBit(PORTCtrl,E);
ClrBit(PORTCtrl,RS);//0
ClrBit(PORTCtrl,RW);//0
PORTData=_Data;
NOP();
NOP();
SetBit(PORTCtrl,E);//1
_delay_us(4);
ClrBit(PORTCtrl,E);
_delay_us(4);
}
//----------------------------------
void Print( unsigned _Data)
{
Command(0x0C);
Data(_Data);
}