/*
 * mini12864LCD 
 * August , 2012
 * created by haishen   
 * for details, see http://www.arduino.cn
*/


#include <arduino.h>
#include <SPI.h>
#include "Lcd12864.h"
// unsigned char i=0,j=0;
lcd12864::lcd12864()
{
}
/********************
 * 数据移位  最高位存入，
 ********************/
#if LCD_SPI==1
#else
void lcd12864::SendByte(unsigned char Dbyte)
{
  unsigned char ,a,TEMP; 
  TEMP=Dbyte;
  for(int i=0;i<8;i++)
  {
    digitalWrite(LSCK,LOW);
    TEMP=(Dbyte<<i)&0X80;
    digitalWrite(LSID,TEMP);
    digitalWrite(LSCK,HIGH);
  }
}
#endif
/****************
 * 写指令
 **************/
void lcd12864::write_cmd(unsigned char Cbyte)
{
  digitalWrite(LCS,LOW);
  digitalWrite(LAO,LOW);
#if LCD_SPI==1
  SPI.transfer(Cbyte);
#else
  SendByte(Cbyte);
#endif
}
/***************
 * 写数据
 ******************/
void lcd12864:: write_data(unsigned char Dbyte)
{
  digitalWrite(LCS,LOW);
  digitalWrite(LAO,HIGH);
#if LCD_SPI==1
  SPI.transfer(Dbyte);
#else
  SendByte(Dbyte);
#endif
}

/*******************
 * 初始化；
 *********************/
void lcd12864::LcmInit()
{
  //L 命令 H  数据	 
  //片选	 低有效
  //使能信号（E)	到高有效
  //	数据信号
  //复位
  pinMode(LAO,OUTPUT);
  pinMode(LCS,OUTPUT);  
  pinMode(LSCK,OUTPUT);
  pinMode(LSID,OUTPUT);
  pinMode(LRST,OUTPUT);  
#if LCD_SPI==1
  // initialize SPI:
  SPI.begin(); 
  SPI.setBitOrder(MSBFIRST);
  SPI.setClockDivider(SPI_CLOCK_DIV2);
#endif	
  digitalWrite(LCS,LOW);
  digitalWrite(LRST,LOW);  
  delay(200);
  digitalWrite(LRST,HIGH);
  delay(1000);	
  write_cmd(0xe2);//system reset
  delay(200);

  write_cmd(0x24);//SET VLCD RESISTOR RATIO
  write_cmd(0xa2);//BR=1/9
  write_cmd(0xa0);//set seg direction
  write_cmd(0xc8);//set com direction
  write_cmd(0x2f);//set power control
  write_cmd(0x40);//set scroll line
  write_cmd(0x81);//SET ELECTRONIC VOLUME
  write_cmd(0x20);//set pm: 通过改变这里的数值来改变电压 
  //write_cmd(0xa6);//set inverse display	   a6 off, a7 on
  //write_cmd(0xa4);//set all pixel on
  write_cmd(0xaf);//set display enable
  LcmClear();
}
/*************************
 * 8*8字符，取模顺序是列行式，
 * 从上到下，高位在前，从左到右；
 * 先选择页地址0-7，再选择列0-130
 * 页码是直接读取8位数据作为地址；
 * 列是先读取高四位，后读取低四位；
 **********************/
void lcd12864::PUTchar8x8(unsigned char row,unsigned char col,unsigned char count,unsigned char const *put)
{		
  unsigned int X=0;
  unsigned int i=0,j=0;
  write_cmd(0xb0+row);
  write_cmd(0x10+(8*col/16));		
  write_cmd(0x00+(8*col%16));
  for(j=0;j<count;j++)
    for(i=0;i<8;i++) write_data(put[X++]); 	

}
/*****************
 * 8*16字符，取模顺序是列行式，
 * 从上到下，高位在前，从左到右；
 * 先选择页地址0-7，再选择列0-127
 * 页码是直接读取8位数据作为地址；
 * 列是先读取高四位，后读取低四位；
 **********************/
void lcd12864::PUTchar8x16(unsigned char row,unsigned char col,unsigned char count,unsigned char const *put)
{		
  unsigned int X=0;
 unsigned int i=0,j=0;
  write_cmd(0xb0+row);
  write_cmd(0x10+(8*col/16));		
  write_cmd(0x00+(8*col%16));
  for(j=0;j<count;j++)
  { 
    for(i=0;i<8;i++) write_data(put[X++]); 
    write_cmd(0xb1+row);	
    write_cmd(0x10+(8*col/16));		
    write_cmd(0x00+(8*col%16));
    for(i=0;i<8;i++) write_data(put[X++]);
    write_cmd(0xb0+row);
    col=col+1; 
  } 

}
/*****************
 * 16*16字符，取模顺序是列行式，
 * 从上到下，高位在前，从左到右；
 * 先选择页地址0-7，再选择列0-127
 * 页码是直接读取8位数据作为地址；
 * 列是先读取高四位，后读取低四位；
 **********************/
void lcd12864::PUTchar16x16(unsigned char row,unsigned char col,unsigned char count,unsigned char const *put)
{		
  unsigned int X=0;
 unsigned int i=0,j=0;
  write_cmd(0xb0+row);
  write_cmd(0x10+(8*col/16));		
  write_cmd(0x00+(8*col%16));
  for(j=0;j<count;j++)
  { 
    for(i=0;i<16;i++) write_data(put[X++]); 
    write_cmd(0xb1+row);	
    write_cmd(0x10+(8*col/16));		
    write_cmd(0x00+(8*col%16));
    for(i=0;i<16;i++) write_data(put[X++]);
    write_cmd(0xb0+row);	 
    col=col+2; 
  }

}
/*****************
 * 24*24字符，取模顺序是列行式，
 * 从上到下，高位在前，从左到右；
 * 先选择页地址0-7，再选择列0-127
 * 页码是直接读取8位数据作为地址；
 * 列是先读取高四位，后读取低四位；
 **********************/
void lcd12864::PUTchar24x24(unsigned char row,unsigned char col,unsigned char count,unsigned char const *put)
{		
  unsigned int X=0;
 unsigned int i=0,j=0;
  write_cmd(0xb0+row);
  write_cmd(0x10+(8*col/16));		
  write_cmd(0x00+(8*col%16));
  for(j=0;j<count;j++)
  { 
    for(i=0;i<24;i++) write_data(put[X++]); 
    write_cmd(0xb1+row);	
    write_cmd(0x10+(8*col/16));		
    write_cmd(0x00+(8*col%16));
    for(i=0;i<24;i++) write_data(put[X++]);
    write_cmd(0xb2+row);	
    write_cmd(0x10+(8*col/16));		
    write_cmd(0x00+(8*col%16));
    for(i=0;i<24;i++) write_data(put[X++]);
    write_cmd(0xb0+row);
    col=col+3; 
  }
}
/*****************
 * 图片；取模顺序是列行式，
 * 从上到下，低在前，从左到右；
 * 先选择页地址0-7，再选择列0-127
 * 页码是直接读取8位数据作为地址；
 * 列是先读取高四位，后读取低四位；
 **********************/
void lcd12864::PUTBMP(unsigned char const *put)
{		
  unsigned int X=0;
 unsigned int i=0,j=0;
  for(j=0;j<8;j++)
  {
    write_cmd(0xb0+j); 
    write_cmd(0x10);		
    write_cmd(0x00);
    for(i=0;i<128;i++) write_data(put[X++]); 
  }	

}
/*****************
 * 图片反显；取模顺序是列行式，
 * 从上到下，位在前，从左到右；
 * 先选择页地址0-7，再选择列0-127
 * 页码是直接读取8位数据作为地址；
 * 列是先读取高四位，后读取低四位；
 **********************/
void lcd12864::PUTREVERSEBMP(unsigned char const *put)
{		
  unsigned int X=0;
 unsigned int i=0,j=0;
  for(j=0;j<8;j++)
  {
    write_cmd(0xb0+j); 
    write_cmd(0x10);		
    write_cmd(0x00);
    for(i=0;i<128;i++) write_data(~put[X++]); 
  }	

}
/*****************
 * 清屏；取模顺序是列行式，
 * 从上到下，低位在前，从左到右；
 * 先选择页地址0-7，再选择列0-127
 * 页码是直接读取8位数据作为地址；
 * 列是先读取高四位，后读取低四位；
 **********************/
void lcd12864::LcmClear()
{	 
  unsigned char x,y;
  for(y=0;y<8;y++)
  {    
    write_cmd(0xb0+y);
    write_cmd(0x10);		
    write_cmd(0x00);
    for(x=0;x<132;x++)  write_data(0); 
  }	
}