//-------------------------------------------------
// Shenzhen TOPWAY Technology Co.,Ltd.
// LCD Module:		  LM12832C
// Display Size:      128x32
// Driver/Controller: ST7567
// Interface:         80 mode
// by:                Dongq
// Date:			  2014-4-12
//-------------------------------------------------
#include <stdio.h>
#include <reg52.h>
#include <intrins.h>

#define uchar unsigned char // 0~255
#define uint unsigned int   // 0~65535

#define LCDBus        P1
sbit	_CS1        = P3^3;
sbit	_RST        = P3^5;
sbit	RS          = P3^6;
sbit    _WR         = P3^1;
sbit    _RD         = P3^7;

sbit _KeySel       = P3^0; // _KeySel=0,    key scanning active
sbit _KeyAuto      = P1^0; // _KeyAuto=0,   key pressed 
sbit _KeyDarker    = P1^1; // _KeyDarker=0, key pressed 
sbit _KeyLighter   = P1^2; // _KeyLighter=0,key pressed 
sbit _KeyStep      = P1^3; // _KeyStep=0,   key pressed

bit     AutoRun;           // 1 for auto run, 0 for manual run
uchar   ContrastLevel;     // for contrast setting level 

//-----------------------------------
// dispaly data (128x32)
//-----------------------------------
uchar code Logo[]={
/*--  invoking topway logo picture：12832c.bmp  --*/
/*--  width x height = 128 x 32  --*/
0x07,0x01,0x01,0x80,0x00,0x80,0x00,0x80,0x00,0x80,0x40,0x80,0x40,0x80,0x40,0x80,
0x40,0x80,0x40,0xA0,0x40,0xA0,0x40,0xA0,0x50,0xA0,0x50,0xA0,0x50,0xA8,0x50,0xA8,
0x50,0xA8,0x54,0xA8,0x54,0x28,0x14,0xAA,0x94,0xCA,0xC4,0xEA,0xE4,0xE2,0xF4,0xF2,
0xF8,0xFA,0xF8,0xF8,0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0x00,0x00,0x00,0x00,0x00,0x40,
0x88,0xD0,0x00,0xB0,0x50,0x30,0x90,0x30,0x50,0xB0,0x00,0x40,0x40,0xF8,0x40,0x40,
0xF8,0x00,0xF0,0x00,0x00,0xF8,0x00,0x20,0x20,0xF8,0x20,0x10,0x90,0x70,0x10,0x10,
0x10,0x10,0x00,0x80,0xB0,0xD0,0x98,0xF0,0x90,0xF0,0x98,0xD0,0xB0,0x80,0x00,0x20,
0x98,0x70,0x40,0x78,0x40,0x70,0x80,0x78,0xC0,0x40,0x00,0x00,0x00,0x01,0x01,0x07,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x80,0x41,0xA8,0x55,0xAA,0x55,0xAA,0x55,0x2A,0x95,0xCA,0xE5,0xF2,
0xF9,0xF8,0xFD,0xFC,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x08,
0x3F,0x00,0x12,0x0A,0x06,0x02,0x3F,0x06,0x0A,0x12,0x00,0x08,0x08,0x27,0x24,0x10,
0x0F,0x00,0x1F,0x00,0x00,0x3F,0x00,0x22,0x22,0x3F,0x05,0x02,0x3F,0x11,0x11,0x11,
0x3F,0x00,0x00,0x00,0x00,0x3E,0x2A,0x2A,0x2A,0x2A,0x2A,0x3E,0x00,0x00,0x00,0x01,
0x3F,0x21,0x1D,0x05,0x1D,0x29,0x13,0x0C,0x13,0x20,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,
0x40,0xA8,0x54,0x2A,0x95,0xCA,0xE5,0xF2,0xF9,0xFC,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x02,0x02,0x02,0x02,0x02,0xF2,
0x02,0x02,0x02,0x02,0x02,0x02,0xF2,0x62,0x82,0x02,0x02,0x02,0x82,0x62,0xF2,0x02,
0x02,0x42,0x22,0xF2,0x02,0x02,0x02,0x22,0x12,0x12,0x12,0x12,0xE2,0x02,0xE2,0x12,
0x12,0x12,0x12,0xE2,0x02,0x22,0x12,0x12,0x12,0x12,0xE2,0x02,0x22,0x12,0x12,0x12,
0x12,0xE2,0x02,0x02,0xC2,0x22,0x12,0x12,0x12,0x22,0x42,0x02,0x02,0x02,0x00,0x00,
0xE0,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x20,0x94,0xCA,
0xE1,0xF8,0xFC,0xFF,0xFF,0xFB,0xFB,0xC3,0xFB,0xFB,0xFF,0xE7,0xDB,0xDB,0xDB,0xE7,
0xFF,0xC3,0xEB,0xEB,0xEB,0xF7,0xFF,0xE3,0xDF,0xEF,0xDF,0xE3,0xFF,0xCF,0xE7,0xEB,
0xE7,0xCF,0xFF,0xFB,0xF7,0xCF,0xF7,0xFB,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x3F,
0x20,0x20,0x20,0x20,0x20,0x00,0x3F,0x00,0x01,0x0E,0x30,0x0E,0x01,0x00,0x3F,0x00,
0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x20,0x30,0x28,0x24,0x22,0x21,0x00,0x1E,0x21,
0x21,0x21,0x21,0x1E,0x00,0x10,0x20,0x21,0x21,0x21,0x1E,0x00,0x20,0x30,0x28,0x24,
0x22,0x21,0x00,0x00,0x0F,0x10,0x20,0x20,0x20,0x10,0x08,0x00,0x00,0x80,0x80,0xE0
};



//-----------------------------------
// Delay Routine
//-----------------------------------
void delayms(uint m)        // 12MHz Xtal, close to ms value
{
	uint j;
	uint i;
	
	for(i=0; i<m; i++)
	    for(j=0; j<109; j++)
	        _nop_();
}



//-----------------------------------
// IO Routine
//-----------------------------------
void SdCmd(uchar Command)   //send command
{
    RS      = 0;
    _WR     = 1;
    _RD     = 1;
    LCDBus  = Command;
    _CS1    = 0;
    _WR     = 0;
   _nop_();
    _nop_();
    _nop_();
    _nop_();
    _WR     = 1;
    _CS1    = 1;

}


void SdData(uchar DData)            //send data
{
    RS      = 1;
    _WR     = 1;
    _RD     = 1;
    LCDBus  = DData;
    _CS1    = 0;
    _WR     = 0;
  _nop_();
   _nop_();
   _nop_();
    _nop_();
    _WR     = 1;
    _CS1    = 1;

}


//-----------------------------------
// Write a Screen
//-----------------------------------
void WriteScreen(uchar *DisplayData)	// DisplayData should be 164x64/8 = 1312byte
{
	uchar TempData;
	uchar i, j;
	for(i=0;i<4;i++)
	    {
    	SdCmd(0xb0 | i);	// select page 0~7
    	SdCmd(0x10);	    // start form column 0
    	SdCmd(0x00);	    // (2byte command)
     	for(j=0;j<128;j++)
     		{
     		TempData=(*(DisplayData+(i*128)+j));
     		SdData(TempData);
 		    }
        }
}

//-----------------------------------
// Contrast control
//-----------------------------------
void LCD_Darker(void)
{
	if (ContrastLevel<0x3F)
    	{
        ContrastLevel++;
		}
    SdCmd(0x81);     		// E-Vol setting
	SdCmd(ContrastLevel);   // (2byte command)
}



void LCD_Lighter(void)
{
	if (ContrastLevel>0x00)
    	{
	     ContrastLevel--;
		}
    SdCmd(0x81);            // E-Vol setting
	SdCmd(ContrastLevel);   // (2byte command)
}



//-----------------------------------
// Init LCD module
//-----------------------------------
void initLCDM(void)
{
	_RST=1;                 // hardware reset LCD module
	_RST=0;
	delayms(10);
	_RST=1;
	delayms(100);

	ContrastLevel=0x28;     // Default Contrast Level
    SdCmd(0xaf);            // Display on
    SdCmd(0x40);            // Set display Start  line=0
    SdCmd(0xa0);            // ADC =0 :SEG1->SEG128
    SdCmd(0xa6);            // Normal display
    SdCmd(0xa4);            // Disable display all point 
    SdCmd(0xa3);            // Bais = 1/5 (duty=1/33)
    SdCmd(0xc8);            // Common output mode select= reverse:C65->C1
    SdCmd(0x2f);            // Power control = all on
    SdCmd(0x23);            // RA/RB setting
    SdCmd(0xf8);            // Booster Ratio = 4x
    SdCmd(0x00);            // (two byte command)
    SdCmd(0x81);            // E-Vol setting
    SdCmd(ContrastLevel);   // (two byte command)



}





//-----------------------------------
// Main Program
//-----------------------------------
void main()
{
	SP=0x60;
	EA = 0;         // disable interrupts

	AutoRun=0;

   _CS1    = 1;
    _RST    = 1;
    RS      = 1;
    _WR     = 1;
    _RD     = 1;


    _KeySel=1;      // key not select

   	initLCDM();

	while(1)
	{
	WriteScreen(Logo);           
 	}
}
//end of program