s6a0094.c

一款单色字符型液晶屏的初始化代码(2004) driver: s6a0094

#include <AT89X52.H>
#include <intrins.h>
#define RS                   P3_3
#define RW                   P3_1
#define E                    P3_0
#define DATA_BUS             P1


void Delay(unsigned int n)
{
    while(n--);
	return;
}


#pragma disable
void Write_Data(unsigned char dat)
{
    RS=1;
    RW=0;
	E=1;
	_nop_();
	DATA_BUS=dat;	
	E=0;
	Delay(10);
	return;
}


#pragma disable
void Write_Instruction(unsigned char cmd)
{
    RS=0;
    RW=0;
	_nop_();
	E=1;
	_nop_();
	DATA_BUS=cmd;
	_nop_();
	E=0;
	Delay(10);
	return;
}

void initial()
{

/*
Write_Instruction(0x31);

Write_Instruction(0x88);
Write_Data(0x1f);

Write_Instruction(0x42);

Write_Instruction(0x51);
Delay(200);//waiting>1ms
Write_Instruction(0x55);
Delay(200);//waiting>1ms
Write_Instruction(0x57);
Delay(100);//waiting>500us


Write_Instruction(0x33);

Write_Instruction(0x5b);
*/
unsigned char i;
Write_Instruction(0x30);//RE=0
Write_Instruction(0x60);//R1~R0=00,CS=0,CG=0(CGROM)
Write_Instruction(0x20);//line blink mode
 
Write_Instruction(0x32);//RE=1
Write_Instruction(0x10);//determination of the DDRAM line which is display
//Write_Instruction(0x20);//douuble height mode
Write_Instruction(0x60);//SS=0
Write_Instruction(0x5d);//IRS=1(internal resistors are used for regulator),BS=0(BIAS=1/4),IR1~IR0=10(1+Rb/Ra)
 
Write_Instruction(0x30);//RE=0
Write_Instruction(0x88);//electronic volume register setup  0x08h
Write_Data(0x10);//0x00~0x1f EV  contrast
Write_Instruction(0x42);//OS=1(Oscillator) on,PS=0(power save off)
 //POWER ON
Write_Instruction(0x51);
Delay(200);//waiting>1ms
Write_Instruction(0x55);
Delay(200);//waiting>1ms
Write_Instruction(0x57);
Delay(100);//waiting>500us
 
Write_Instruction(0x30);
Write_Instruction(0xb0);//DDRAM address
 for(i=0;i<80;i++)//clear DDRAM
 {
   Write_Data(0x20);
 }
 
Write_Instruction(0x30);//RE=0
 Write_Data(0x10);//AC TO 30H,cursor returens to home position
 
Write_Instruction(0x31);//RE=1,Dislay on

return;
}

void display()
{

Write_Instruction(0x31);//re=0,display on
Write_Instruction(0xC0);//DDRAM line2
 Write_Data(0x42);//display"A"

}

void main()
{
 Delay(1000);
  initial();

 while(1)
  {
display();
  }

}