lcddrive.c

51单片机接受SPI口数据

#include "lcddrive.h"
#include <string.h>

#define databus P2
sbit  CS=P1^1;
sbit  CD=P3^5;
sbit  WRB=P3^6;
 

//sbit TCK = P1^4; //底板时钟线接口，待连接外部中断0 P3.2
sbit TDA = P1^3; //底板数据线接口

void LCD_WriteCommand(char com)
{
	CS=0;
	CD=0;          //write command
	WRB=0;
	databus=com;
	WRB=1;
	CD=1;
	CS=1;
}

void LCD_WriteData(char dat)
{
	CS=0;
	CD=1;    //write display datas
	WRB=0;
	databus=dat;
	WRB=1;
	CD=0;
	CS=1;
}

void CopyRAMToLCD(int x1, int y1, int x2, int y2)
{
   unsigned char row,row1,bytenum,j;
   int validbytecnt;
   unsigned char temp,temp1,temp2,temp3,temp4,temp5,temp6,temp7,temp8;
   unsigned char h11,h12,h13,h14,h15,h16,h17,h18,d1,d2,d3,d4;
   unsigned char *pdatabuf_1=0;
   //unsigned char *pdatabuf_2=0; 
   
   validbytecnt=0;
   
//   GUI_FillSCR(0xaa);

//   if((x1 > GUI_LCM_XMAX)||(y1 > GUI_LCM_YMAX)) return;

   //截取有效图形-有效行数
//   if( (y2-y1) < GUI_LCM_YMAX) validcolnum=y2-y1+1;
//   else validcolnum=GUI_LCM_YMAX-y1+1;
   
   //截取有效图形-有效列数
//   if((x2-x1) < GUI_LCM_XMAX) validrownum=x2-x1+1;
//   else  validrownum=GUI_LCM_XMAX-x1+1;
  
  // pdatabuf=&DispBuff[0][0];//(INT8U*)malloc(sizeof(INT8U)*validcolnum*((pPicture->width/8)*4+1));//动态申请内存,行字节数扩展至4倍加1
 //  memcpy(pdatabuf, 0xFF, 20);
 //  *pdatabuf=0xff;
   for (row=y1,row1=0; row<=y2; row++,row1++)			//行
   {

//		pdata_1=DispRAM+row*((GUI_LCM_XMAX/8)*4+1);			//扩展后图:pdata_1指向第col行首地址
		pdatabuf_1=DispBuff_uc1698;									//扩展后图:pdata_1指向第col行首地址
		//pdatabuf_2=&DispBuff[0][0];
		//pdatabuf_2 += row*(GUI_LCM_XMAX/8); 	//原图:pdata_2指向第col行首地址
//		   DispBuff[1][2]=0x36;
		for (bytenum=0; bytenum<(GUI_LCM_XMAX/8);bytenum++)	//列
		{
//			temp=*(pdatabuf_2+bytenum);    //change 1byte B/W data to 4k-color data
//			DispBuff[row][bytenum]=0x25;
			temp=DispBuff[row1][bytenum];    //change 1byte B/W data to 4k-color data
			temp1=temp&0x80;
			temp2=(temp&0x40)>>3;
			temp3=(temp&0x20)<<2;
			temp4=(temp&0x10)>>1;
			temp5=(temp&0x08)<<4;
			temp6=(temp&0x04)<<1;
			temp7=(temp&0x02)<<6;
			temp8=(temp&0x01)<<3;
			h11=temp1|temp1>>1|temp1>>2|temp1>>3;
			h12=temp2|temp2>>1|temp2>>2|temp2>>3;
			h13=temp3|temp3>>1|temp3>>2|temp3>>3;
			h14=temp4|temp4>>1|temp4>>2|temp4>>3;
			h15=temp5|temp5>>1|temp5>>2|temp5>>3;
			h16=temp6|temp6>>1|temp6>>2|temp6>>3;
			h17=temp7|temp7>>1|temp7>>2|temp7>>3;
			h18=temp8|temp8>>1|temp8>>2|temp8>>3;

			d1=h11|h12;
			d2=h13|h14;
			d3=h15|h16;
			d4=h17|h18;
			//扩展后的数据保存扩展内存中
			*(pdatabuf_1++)=d1;
//			validbytecnt++;
//			row+=2;
//			if(row>=validrownum) break;
			
			*(pdatabuf_1++)=d2;
//			validbytecnt++;
//			row+=2;
//			if(row>=validrownum) break;
			
			*(pdatabuf_1++)=d3;
//			validbytecnt++;
//			row+=2;
//			if(row>=validrownum) break;
			
			*(pdatabuf_1++)=d4;
//			validbytecnt++;
//			row+=2;
//			if(row>=validrownum) break;	
		}
		LCD_WriteCommand(0x70|(row>>4)); 	//set row MSB address
		LCD_WriteCommand(0x60|(row&0x0F));   //set row LSB address
		LCD_WriteCommand(0x12);  //set column MSB address  //    12
		LCD_WriteCommand(0x05);  //set column LSB address  //37  05
		
		for(j=x1;j<(x2+3)/2;j++)	//保证每行写满81个字节
		{	
			//DispBuff_uc1698[j]=0xf0;
			LCD_WriteData(DispBuff_uc1698[j]);
		}
	}
	
}

void delay(uint t)
{
	uint i;
	while(--t)
  	for(i=0;i<100;i++);
}

void init_uc1698(void)
{
	LCD_WriteCommand(0xe2);   //system reset
	delay(100);
	LCD_WriteCommand(0x31);
	LCD_WriteCommand(0x08);
	LCD_WriteCommand(0x2b); // internal power control
	//wr_command(0x25);  //set TC=-0.05%
	LCD_WriteCommand(0xA0);  //set line rate
	LCD_WriteCommand(0xeb);  //0XEA//set bias
	LCD_WriteCommand(0xf1);   //set com end
	LCD_WriteCommand(0x9f);   //set duty :1/160
	LCD_WriteCommand(0x81);   //set VLCD value
	LCD_WriteCommand(0x80); //VLCD=(CV0+Cpm*pm)*(1+(T-25)*CT%)
	LCD_WriteCommand(0xc4);  //0XC4 //set LCD mapping control  //scan dirction com0~127
	LCD_WriteCommand(0x89); //set RAM address control
	LCD_WriteCommand(0xd1); // R_G_B
	LCD_WriteCommand(0xd5);   //4k color
	LCD_WriteCommand(0xc8);
	LCD_WriteCommand(0x18);
	//wr_command(0xde);
	//wr_command(0xad);   //0xad//display  on
	LCD_WriteCommand(0xad);   //0xad//display  on
}

void RAM_ADDRESS(void)
{
	LCD_WriteCommand(0xf4);  //set oolumn start address
	LCD_WriteCommand(0x25);  //  start address
	LCD_WriteCommand(0xf6);  //  set column end address
	LCD_WriteCommand(0x5a); //(0x4f+1)*3=240  5a   //90

	LCD_WriteCommand(0xf5);  //set row start address
	LCD_WriteCommand(0x00);  //start address=0x00
	LCD_WriteCommand(0xf7); //set row end address
	LCD_WriteCommand(0x9f); //row end address=9f
	LCD_WriteCommand(0x70);  //set row MSB address
	LCD_WriteCommand(0x60);  //set row LSB address
	LCD_WriteCommand(0x12);  //set column MSB address  //    12
	LCD_WriteCommand(0x05);  //set column LSB address  //37  05
	LCD_WriteCommand(0xf8); //inside mode 
}