GDEW0097T50_lib.cpp

#include "GDEW0097T50_lib.h"

unsigned char oldData[2024];
unsigned char oldDataP[256];
unsigned char oldDataA[256];
unsigned char oldDataB[256];
unsigned char oldDataC[256];
unsigned char oldDataD[256];
unsigned char oldDataE[256];
unsigned char partFlag=1;

//SPI write byte
void SPI_Write(unsigned char value)
{				   			 
   SPI.transfer(value);
}

//SPI write command
void EPD_W21_WriteCMD(unsigned char command)
{
	EPD_W21_CS_0;
	EPD_W21_DC_0; // D/C# 0:command 1:data  
	SPI_Write(command);
	EPD_W21_CS_1;
}

//SPI write data
void EPD_W21_WriteDATA(unsigned char datas)
{
	EPD_W21_CS_0;
	EPD_W21_DC_1;  // D/C#   0:command  1:data
	SPI_Write(datas);
	EPD_W21_CS_1;
}

//Busy function
void lcd_chkstatus(void)
{ 
  while(1)
  { //=0 BUSY
    if(isEPD_W21_BUSY==1) break;  
    ESP.wdtFeed(); // Feed dog to prevent system reset  
  }  
}  

void EPD_lut(unsigned char LUTsel)      
{
  unsigned char tempfull,temppartial;
  EPD_W21_WriteCMD(0x40);
  lcd_chkstatus();
  tempfull =25;
  if((128>tempfull)&&(tempfull>54))   
    tempfull = 53 ;           
  else if(tempfull>128)         
    tempfull = 1;             
  
  temppartial = tempfull+60;      
  if(temppartial>128)           
    temppartial = 127;
  
  if(LUTsel==0)             
  {
    EPD_W21_WriteCMD(0xE0);         
    EPD_W21_WriteDATA(0x02);    
    EPD_W21_WriteCMD(0xE5);     
    EPD_W21_WriteDATA(tempfull); // define the Temperature value////      
  }
  else if(LUTsel==1)              
  {
    EPD_W21_WriteCMD(0xe0);
    EPD_W21_WriteDATA (0x02);
    EPD_W21_WriteCMD(0xe5);
    EPD_W21_WriteDATA (temppartial);
  }
}

//JD79651
void EPD_Init(void)
{ 
  EPD_W21_RST_0; // Module reset
  delay(10); // At least 10ms delay 
  EPD_W21_RST_1;
  delay(10); // At least 10ms delay 
  lcd_chkstatus();
  /******FiTi  init****************/
  EPD_W21_WriteCMD(0x4D); // FITIinternal code
  EPD_W21_WriteDATA (0xAA);

  EPD_W21_WriteCMD(0x87); // FITIinternal code
  EPD_W21_WriteDATA (0x28);

  EPD_W21_WriteCMD(0x88); // FITIinternal code
  EPD_W21_WriteDATA (0x80);

  EPD_W21_WriteCMD(0x90); // FITIinternal code
  EPD_W21_WriteDATA (0x02);

  EPD_W21_WriteCMD(0x91); // FITIinternal code
  EPD_W21_WriteDATA (0x8d);

  EPD_W21_WriteCMD(0xAA); // FITIinternal code
  EPD_W21_WriteDATA (0x0f);

  EPD_lut(0); 

  EPD_W21_WriteCMD(0xE8);         
  EPD_W21_WriteDATA (0xA8); // A

  EPD_W21_WriteCMD(0x26);         
  EPD_W21_WriteDATA (0x0f); // A

  EPD_W21_WriteCMD(0x04);  
  lcd_chkstatus();

  EPD_W21_WriteCMD(0x00); // panel setting
  EPD_W21_WriteDATA(0x1f); // KW-BF   KWR-AF  BWROTP 0f BWOTP 1f

  EPD_W21_WriteCMD(0X50);
  EPD_W21_WriteDATA(0x97);
}

void EPD_Init_Part(void)
{
  EPD_W21_RST_0; // Module reset
  delay(10); // At least 10ms delay 
  EPD_W21_RST_1;
  delay(10); // At least 10ms delay 
  lcd_chkstatus();

  EPD_W21_WriteCMD(0x4D); // FITIinternal code
  EPD_W21_WriteDATA (0xAA);

  EPD_W21_WriteCMD(0x87); // FITIinternal code
  EPD_W21_WriteDATA (0x28);

  EPD_W21_WriteCMD(0x88); // FITIinternal code
  EPD_W21_WriteDATA (0x80);

  EPD_W21_WriteCMD(0x90); // FITIinternal code
  EPD_W21_WriteDATA (0x02);

  EPD_W21_WriteCMD(0x91); // FITIinternal code
  EPD_W21_WriteDATA (0x8d);

  EPD_W21_WriteCMD(0xAA); // FITIinternal code
  EPD_W21_WriteDATA (0x0f);

  EPD_lut(1);

  EPD_W21_WriteCMD(0xE8);         
  EPD_W21_WriteDATA (0xA8); // A

  EPD_W21_WriteCMD(0x26);         
  EPD_W21_WriteDATA (0x0f); // A

  EPD_W21_WriteCMD(0x04);  
  lcd_chkstatus();

  EPD_W21_WriteCMD(0x00); // panel setting
  EPD_W21_WriteDATA(0x1f); // KW-BF   KWR-AF  BWROTP 0f BWOTP 1f

  EPD_W21_WriteCMD(0X50);
  EPD_W21_WriteDATA(0xf7);
}
  
void EPD_DeepSleep(void)
{
  EPD_W21_WriteCMD(0X50); // VCOM AND DATA INTERVAL SETTING     
  EPD_W21_WriteDATA(0xf7); // WBmode:VBDF 17|D7 VBDW 97 VBDB 57    WBRmode:VBDF F7 VBDW 77 VBDB 37  VBDR B7  

  EPD_W21_WriteCMD(0X02); // power off
  lcd_chkstatus(); // waiting for the electronic paper IC to release the idle signal
  delay(100);
  EPD_W21_WriteCMD(0X07); // deep sleep
  EPD_W21_WriteDATA(0xA5);
}


//Full screen refresh update function
void EPD_Update(void)
{   
  //Refresh
  EPD_W21_WriteCMD(0x12); // DISPLAY REFRESH   
  delay(1); // !!!The delay here is necessary, 200uS at least!!!     
  lcd_chkstatus(); // waiting for the electronic paper IC to release the idle signal
}


void EPD_WhiteScreen_ALL(const unsigned char *datas)
{
  unsigned int i;
  //Write Data
  EPD_W21_WriteCMD(0x10); // Transfer old data
  for(i=0;i<EPD_ARRAY;i++)    
  { 
    EPD_W21_WriteDATA(0xFF); // Transfer the actual displayed data
  } 
  EPD_W21_WriteCMD(0x13); // Transfer new data
  for(i=0;i<EPD_ARRAY;i++)       
  {
    EPD_W21_WriteDATA(pgm_read_byte(&datas[i])); // Transfer the actual displayed data
  }
  EPD_Update();     
}

void EPD_WhiteScreen_White(void)
{
  unsigned int i;
  //Write Data
  EPD_W21_WriteCMD(0x10); // Transfer old data
  for(i=0;i<EPD_ARRAY;i++)    
  { 
    EPD_W21_WriteDATA(0xFF); 
  }
  EPD_W21_WriteCMD(0x13); // Transfer new data
  for(i=0;i<EPD_ARRAY;i++)       
  {
    EPD_W21_WriteDATA(0xFF); // Transfer the actual displayed data
    oldData[i]=0xFF; 
  }
  EPD_Update();     
}

//Partial refresh of background display, this function is necessary, please do not delete it!!!
void EPD_SetRAMValue_BaseMap( const unsigned char * datas)
{
  unsigned int i; 
  EPD_W21_WriteCMD(0x10); // write old data 
  for(i=0;i<EPD_ARRAY;i++)
  {               
    EPD_W21_WriteDATA(0xFF);
  }
  EPD_W21_WriteCMD(0x13); // write new data 
  for(i=0;i<EPD_ARRAY;i++)
  {               
    EPD_W21_WriteDATA(pgm_read_byte(&datas[i]));
    oldData[i]=pgm_read_byte(&datas[i]); 
  }   
  EPD_Update();     
}


void EPD_Dis_Part(unsigned int x_start,unsigned int y_start,const unsigned char * datas,unsigned int PART_COLUMN,unsigned int PART_LINE)
{
  unsigned int i;
  x_start=x_start-x_start%8;

  EPD_Init_Part();

  EPD_W21_WriteCMD(0x91); // This command makes the display enter partial mode
  EPD_W21_WriteCMD(0x90); // resolution setting

  EPD_W21_WriteCMD(0x14); // resolution setting
  EPD_W21_WriteDATA (x_start); // x-start    
  EPD_W21_WriteDATA (y_start/256);
  EPD_W21_WriteDATA (y_start%256); // y-start  
  EPD_W21_WriteDATA(PART_LINE); // w
  EPD_W21_WriteDATA((PART_COLUMN)/256); // l-MSB
  EPD_W21_WriteDATA((PART_COLUMN)%256); // l-LSB 
  if(partFlag==1) 
  {
    partFlag=0;
    for(i=0;i<PART_COLUMN*PART_LINE/8;i++)       
      EPD_W21_WriteDATA(0xFF); 
  }
  else
  {
    for(i=0;i<PART_COLUMN*PART_LINE/8;i++)       
      EPD_W21_WriteDATA(oldData[i]);   
  }

  EPD_W21_WriteCMD(0x15); // resolution setting
  EPD_W21_WriteDATA (x_start); // x-start    
  EPD_W21_WriteDATA (y_start/256);
  EPD_W21_WriteDATA (y_start%256); // y-start  
  EPD_W21_WriteDATA(PART_LINE); //w
  EPD_W21_WriteDATA((PART_COLUMN)/256); // l-MSB
  EPD_W21_WriteDATA((PART_COLUMN)%256); // l-LSB 

  for(i=0;i<PART_COLUMN*PART_LINE/8;i++)       
  {
    EPD_W21_WriteDATA(pgm_read_byte(&datas[i]));
    oldData[i]=pgm_read_byte(&datas[i]);       
  } 

  //Refresh
  EPD_W21_WriteCMD(0x16); // DISPLAY REFRESH 
  EPD_W21_WriteDATA (x_start); // x-start    
  EPD_W21_WriteDATA (y_start/256);
  EPD_W21_WriteDATA (y_start%256); // y-start  
  EPD_W21_WriteDATA(PART_LINE); // w
  EPD_W21_WriteDATA((PART_COLUMN)/256); // l-MSB
  EPD_W21_WriteDATA((PART_COLUMN)%256); // l-LSB 

  delay(1); // !!!The delay here is necessary, 200uS at least!!!     
  lcd_chkstatus(); // waiting for the electronic paper IC to release the idle signal  
}

// Full screen partial refresh display
void EPD_Dis_PartAll(const unsigned char * datas)
{
  unsigned int i;
  EPD_Init_Part();
  // Write Data
  EPD_W21_WriteCMD(0x10); // Transfer old data
  for(i=0;i<EPD_ARRAY;i++)    
  { 
    EPD_W21_WriteDATA(oldData[i]); // Transfer the actual displayed data
  } 
  EPD_W21_WriteCMD(0x13); // Transfer new data
  for(i=0;i<EPD_ARRAY;i++)       
  {
    EPD_W21_WriteDATA(pgm_read_byte(&datas[i])); // Transfer the actual displayed data
    oldData[i]=pgm_read_byte(&datas[i]); 
  }  
    
  EPD_Update();      
}

//Partial refresh write address and data
void EPD_Dis_Part_RAM(unsigned int x_start,unsigned int y_start,
                        const unsigned char * datas_A,const unsigned char * datas_B,
                        const unsigned char * datas_C,const unsigned char * datas_D,const unsigned char * datas_E,
                        unsigned char num,unsigned int PART_COLUMN,unsigned int PART_LINE)
{
  unsigned int i;
  x_start=x_start-x_start%8;

  EPD_Init_Part();

  EPD_W21_WriteCMD(0x91); // This command makes the display enter partial mode
  EPD_W21_WriteCMD(0x90); // resolution setting

  EPD_W21_WriteCMD(0x14); // resolution setting
  EPD_W21_WriteDATA (x_start); // x-start    
  EPD_W21_WriteDATA (y_start/256);
  EPD_W21_WriteDATA (y_start%256); // y-start  
  EPD_W21_WriteDATA(PART_LINE); // w
  EPD_W21_WriteDATA((PART_COLUMN*num)/256); // l-MSB
  EPD_W21_WriteDATA((PART_COLUMN*num)%256); // l-LSB 
  if(partFlag==1) 
  {
    partFlag=0;
    for(i=0;i<PART_COLUMN*PART_LINE*num/8;i++)       
        EPD_W21_WriteDATA(0xFF); 
  }
  else
  {
    for(i=0;i<PART_COLUMN*PART_LINE/8;i++)       
      EPD_W21_WriteDATA(oldDataA[i]);              
    for(i=0;i<PART_COLUMN*PART_LINE/8;i++)       
      EPD_W21_WriteDATA(oldDataB[i]);  
    for(i=0;i<PART_COLUMN*PART_LINE/8;i++)       
      EPD_W21_WriteDATA(oldDataC[i]);              
    for(i=0;i<PART_COLUMN*PART_LINE/8;i++)       
      EPD_W21_WriteDATA(oldDataD[i]);
    for(i=0;i<PART_COLUMN*PART_LINE/8;i++)       
      EPD_W21_WriteDATA(oldDataE[i]);                    
  } 

  EPD_W21_WriteCMD(0x15); // writes New data to SRAM.
  EPD_W21_WriteDATA (x_start); // x-start    
  EPD_W21_WriteDATA (y_start/256);
  EPD_W21_WriteDATA (y_start%256); // y-start  
  EPD_W21_WriteDATA(PART_LINE); // w
  EPD_W21_WriteDATA((PART_COLUMN*num)/256); // l-MSB
  EPD_W21_WriteDATA((PART_COLUMN*num)%256); // l-LSB 
  
  for(i=0;i<PART_COLUMN*PART_LINE/8;i++)  
  {     
    EPD_W21_WriteDATA(pgm_read_byte(&datas_A[i]));  
    oldDataA[i]=pgm_read_byte(&datas_A[i]);
  }         
  for(i=0;i<PART_COLUMN*PART_LINE/8;i++)  
  {     
    EPD_W21_WriteDATA(pgm_read_byte(&datas_B[i]));  
    oldDataB[i]=pgm_read_byte(&datas_B[i]);
  } 
  for(i=0;i<PART_COLUMN*PART_LINE/8;i++)  
  {     
    EPD_W21_WriteDATA(pgm_read_byte(&datas_C[i]));  
    oldDataC[i]=pgm_read_byte(&datas_C[i]);
  } 
  for(i=0;i<PART_COLUMN*PART_LINE/8;i++)  
  {     
    EPD_W21_WriteDATA(pgm_read_byte(&datas_D[i]));  
    oldDataD[i]=pgm_read_byte(&datas_D[i]);
  } 
  for(i=0;i<PART_COLUMN*PART_LINE/8;i++)  
  {     
    EPD_W21_WriteDATA(pgm_read_byte(&datas_E[i]));  
    oldDataE[i]=pgm_read_byte(&datas_E[i]); 
  } 
  //Refresh
  EPD_W21_WriteCMD(0x16); // DISPLAY REFRESH 
  EPD_W21_WriteDATA (x_start); // x-start    
  EPD_W21_WriteDATA (y_start/256);
  EPD_W21_WriteDATA (y_start%256); // y-start  
  EPD_W21_WriteDATA(PART_LINE); // w
  EPD_W21_WriteDATA((PART_COLUMN*num)/256); // l-MSB
  EPD_W21_WriteDATA((PART_COLUMN*num)%256); // l-LSB 

  delay(1); // !!!The delay here is necessary, 200uS at least!!!     
  lcd_chkstatus(); // waiting for the electronic paper IC to release the idle signal  
}


//Display rotation 180 degrees initialization
void EPD_Init_180(void)
{ 
  EPD_W21_RST_0;    // Module reset
  delay(10);//At least 10ms delay 
  EPD_W21_RST_1;
  delay(10);//At least 10ms delay 
  lcd_chkstatus();
  /******FiTi  init****************/
  EPD_W21_WriteCMD(0x4D);             //FITIinternal code
  EPD_W21_WriteDATA (0xAA);

  EPD_W21_WriteCMD(0x87);             //FITIinternal code
  EPD_W21_WriteDATA (0x28);

  EPD_W21_WriteCMD(0x88);             //FITIinternal code
  EPD_W21_WriteDATA (0x80);

  EPD_W21_WriteCMD(0x90);             //FITIinternal code
  EPD_W21_WriteDATA (0x02);

  EPD_W21_WriteCMD(0x91);             //FITIinternal code
  EPD_W21_WriteDATA (0x8d);

  EPD_W21_WriteCMD(0xAA);             //FITIinternal code
  EPD_W21_WriteDATA (0x0f);

  EPD_lut(0); 

  EPD_W21_WriteCMD(0xE8);         
  EPD_W21_WriteDATA (0xA8);   //A

  EPD_W21_WriteCMD(0x26);         
  EPD_W21_WriteDATA (0x0f);   //A

  EPD_W21_WriteCMD(0x04);  
  lcd_chkstatus();

  EPD_W21_WriteCMD(0x00);
  EPD_W21_WriteDATA(0x13); //180 mirror

  EPD_W21_WriteCMD(0X50);
  EPD_W21_WriteDATA(0x97);
}



/*
    That's all folks!
*/