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Display_EPD_W21.cpp
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Display_EPD_W21.cpp
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#include "Display_EPD_W21_spi.h"
#include "Display_EPD_W21.h"
////////////////////////////////////E-paper demo//////////////////////////////////////////////////////////
//Busy function
void Epaper_READBUSY(void)
{
while(1)
{ //=1 BUSY
if(isEPD_W21_BUSY==0) break;
}
}
//Full screen refresh initialization
void EPD_HW_Init(void)
{
EPD_W21_RST_0; // Module reset
delay(10);//At least 10ms delay
EPD_W21_RST_1;
delay(10); //At least 10ms delay
Epaper_READBUSY();
EPD_W21_WriteCMD(0x12); //SWRESET
Epaper_READBUSY();
EPD_W21_WriteCMD(0x01); //Driver output control
EPD_W21_WriteDATA((EPD_HEIGHT-1)%256);
EPD_W21_WriteDATA((EPD_HEIGHT-1)/256);
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteCMD(0x11); //data entry mode
EPD_W21_WriteDATA(0x01);
EPD_W21_WriteCMD(0x44); //set Ram-X address start/end position
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteDATA(EPD_WIDTH/8-1);
EPD_W21_WriteCMD(0x45); //set Ram-Y address start/end position
EPD_W21_WriteDATA((EPD_HEIGHT-1)%256);
EPD_W21_WriteDATA((EPD_HEIGHT-1)/256);
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteCMD(0x3C); //BorderWavefrom
EPD_W21_WriteDATA(0x05);
EPD_W21_WriteCMD(0x21); // Display update control
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteDATA(0x80);
EPD_W21_WriteCMD(0x18); //Read built-in temperature sensor
EPD_W21_WriteDATA(0x80);
EPD_W21_WriteCMD(0x4E); // set RAM x address count to 0;
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteCMD(0x4F); // set RAM y address count to 0X199;
EPD_W21_WriteDATA((EPD_HEIGHT-1)%256);
EPD_W21_WriteDATA((EPD_HEIGHT-1)/256);
Epaper_READBUSY();
}
//Fast refresh 1 initialization
void EPD_HW_Init_Fast(void)
{
EPD_W21_RST_0; // Module reset
delay(10);//At least 10ms delay
EPD_W21_RST_1;
delay(10); //At least 10ms delay
EPD_W21_WriteCMD(0x12); //SWRESET
Epaper_READBUSY();
EPD_W21_WriteCMD(0x18); //Read built-in temperature sensor
EPD_W21_WriteDATA(0x80);
EPD_W21_WriteCMD(0x22); // Load temperature value
EPD_W21_WriteDATA(0xB1);
EPD_W21_WriteCMD(0x20);
Epaper_READBUSY();
EPD_W21_WriteCMD(0x1A); // Write to temperature register
EPD_W21_WriteDATA(0x64);
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteCMD(0x22); // Load temperature value
EPD_W21_WriteDATA(0x91);
EPD_W21_WriteCMD(0x20);
Epaper_READBUSY();
}
//////////////////////////////Display Update Function///////////////////////////////////////////////////////
//Full screen refresh update function
void EPD_Update(void)
{
EPD_W21_WriteCMD(0x22); //Display Update Control
EPD_W21_WriteDATA(0xF7);
EPD_W21_WriteCMD(0x20); //Activate Display Update Sequence
Epaper_READBUSY();
}
//Fast refresh 1 update function
void EPD_Update_Fast(void)
{
EPD_W21_WriteCMD(0x22); //Display Update Control
EPD_W21_WriteDATA(0xC7);
EPD_W21_WriteCMD(0x20); //Activate Display Update Sequence
Epaper_READBUSY();
}
//Partial refresh update function
void EPD_Part_Update(void)
{
EPD_W21_WriteCMD(0x22); //Display Update Control
EPD_W21_WriteDATA(0xFF);
EPD_W21_WriteCMD(0x20); //Activate Display Update Sequence
Epaper_READBUSY();
}
//////////////////////////////Display Data Transfer Function////////////////////////////////////////////
//Full screen refresh display function
void EPD_WhiteScreen_ALL(const unsigned char *datas)
{
unsigned int i;
EPD_W21_WriteCMD(0x24); //write RAM for black(0)/white (1)
for(i=0;i<EPD_ARRAY;i++)
{
EPD_W21_WriteDATA(pgm_read_byte(&datas[i]));
}
EPD_Update();
}
//Fast refresh display function
void EPD_WhiteScreen_ALL_Fast(const unsigned char *datas)
{
unsigned int i;
EPD_W21_WriteCMD(0x24); //write RAM for black(0)/white (1)
for(i=0;i<EPD_ARRAY;i++)
{
EPD_W21_WriteDATA(pgm_read_byte(&datas[i]));
}
EPD_Update_Fast();
}
//Clear screen display
void EPD_WhiteScreen_White(void)
{
unsigned int i;
EPD_W21_WriteCMD(0x24); //write RAM for black(0)/white (1)
for(i=0;i<EPD_ARRAY;i++)
{
EPD_W21_WriteDATA(0xff);
}
EPD_Update();
}
//Display all black
void EPD_WhiteScreen_Black(void)
{
unsigned int i;
EPD_W21_WriteCMD(0x24); //write RAM for black(0)/white (1)
for(i=0;i<EPD_ARRAY;i++)
{
EPD_W21_WriteDATA(0x00);
}
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(0x24); //Write Black and White image to RAM
for(i=0;i<EPD_ARRAY;i++)
{
EPD_W21_WriteDATA(pgm_read_byte(&datas[i]));
}
EPD_W21_WriteCMD(0x26); //Write Black and White image to RAM
for(i=0;i<EPD_ARRAY;i++)
{
EPD_W21_WriteDATA(pgm_read_byte(&datas[i]));
}
EPD_Update();
}
//Partial refresh display
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;
unsigned int x_end,y_end;
x_start=x_start/8; //x address start
x_end=x_start+PART_LINE/8-1; //x address end
y_start=y_start; //Y address start
y_end=y_start+PART_COLUMN-1; //Y address end
EPD_W21_RST_0; // Module reset
delay(10);//At least 10ms delay
EPD_W21_RST_1;
delay(10); //At least 10ms delay
EPD_W21_WriteCMD(0x3C); //BorderWavefrom,
EPD_W21_WriteDATA(0x80);
EPD_W21_WriteCMD(0x44); // set RAM x address start/end
EPD_W21_WriteDATA(x_start); //x address start
EPD_W21_WriteDATA(x_end); //y address end
EPD_W21_WriteCMD(0x45); // set RAM y address start/end
EPD_W21_WriteDATA(y_start%256); //y address start2
EPD_W21_WriteDATA(y_start/256); //y address start1
EPD_W21_WriteDATA(y_end%256); //y address end2
EPD_W21_WriteDATA(y_end/256); //y address end1
EPD_W21_WriteCMD(0x4E); // set RAM x address count to 0;
EPD_W21_WriteDATA(x_start); //x start address
EPD_W21_WriteCMD(0x4F); // set RAM y address count to 0X127;
EPD_W21_WriteDATA(y_start%256);//y address start2
EPD_W21_WriteDATA(y_start/256);//y address start1
EPD_W21_WriteCMD(0x24); //Write Black and White image to RAM
for(i=0;i<PART_COLUMN*PART_LINE/8;i++)
{
EPD_W21_WriteDATA(pgm_read_byte(&datas[i]));
}
EPD_Part_Update();
}
//Full screen partial refresh display
void EPD_Dis_PartAll(const unsigned char * datas)
{
unsigned int i;
unsigned int PART_COLUMN, PART_LINE;
PART_COLUMN=EPD_HEIGHT,PART_LINE=EPD_WIDTH;
EPD_W21_RST_0; // Module reset
delay(10); //At least 10ms delay
EPD_W21_RST_1;
delay(10); //At least 10ms delay
EPD_W21_WriteCMD(0x3C); //BorderWavefrom,
EPD_W21_WriteDATA(0x80);
EPD_W21_WriteCMD(0x24); //Write Black and White image to RAM
for(i=0;i<PART_COLUMN*PART_LINE/8;i++)
{
EPD_W21_WriteDATA(pgm_read_byte(&datas[i]));
}
EPD_Part_Update();
}
//Deep sleep function
void EPD_DeepSleep(void)
{
EPD_W21_WriteCMD(0x10); //Enter deep sleep
EPD_W21_WriteDATA(0x01);
delay(100);
}
//Partial refresh write address and data
void EPD_Dis_Part_RAM(unsigned int x_start,unsigned int y_start,const unsigned char * datas,unsigned int PART_COLUMN,unsigned int PART_LINE)
{
unsigned int i;
unsigned int x_end,y_end;
x_start=x_start/8; //x address start
x_end=x_start+PART_LINE/8-1; //x address end
y_start=y_start-1; //Y address start
y_end=y_start+PART_COLUMN-1; //Y address end
EPD_W21_RST_0; // Module reset
delay(10);//At least 10ms delay
EPD_W21_RST_1;
delay(10); //At least 10ms delay
EPD_W21_WriteCMD(0x3C); //BorderWavefrom,
EPD_W21_WriteDATA(0x80);
EPD_W21_WriteCMD(0x44); // set RAM x address start/end
EPD_W21_WriteDATA(x_start); //x address start
EPD_W21_WriteDATA(x_end); //y address end
EPD_W21_WriteCMD(0x45); // set RAM y address start/end
EPD_W21_WriteDATA(y_start%256); //y address start2
EPD_W21_WriteDATA(y_start/256); //y address start1
EPD_W21_WriteDATA(y_end%256); //y address end2
EPD_W21_WriteDATA(y_end/256); //y address end1
EPD_W21_WriteCMD(0x4E); // set RAM x address count to 0;
EPD_W21_WriteDATA(x_start); //x start address
EPD_W21_WriteCMD(0x4F); // set RAM y address count to 0X127;
EPD_W21_WriteDATA(y_start%256); //y address start2
EPD_W21_WriteDATA(y_start/256); //y address start1
EPD_W21_WriteCMD(0x24); //Write Black and White image to RAM
for(i=0;i<PART_COLUMN*PART_LINE/8;i++)
{
EPD_W21_WriteDATA(pgm_read_byte(&datas[i]));
}
}
//Clock display
void EPD_Dis_Part_Time(unsigned int x_startA,unsigned int y_startA,const unsigned char * datasA,
unsigned int x_startB,unsigned int y_startB,const unsigned char * datasB,
unsigned int x_startC,unsigned int y_startC,const unsigned char * datasC,
unsigned int x_startD,unsigned int y_startD,const unsigned char * datasD,
unsigned int x_startE,unsigned int y_startE,const unsigned char * datasE,
unsigned int PART_COLUMN,unsigned int PART_LINE
)
{
EPD_Dis_Part_RAM(x_startA,y_startA,datasA,PART_COLUMN,PART_LINE);
EPD_Dis_Part_RAM(x_startB,y_startB,datasB,PART_COLUMN,PART_LINE);
EPD_Dis_Part_RAM(x_startC,y_startC,datasC,PART_COLUMN,PART_LINE);
EPD_Dis_Part_RAM(x_startD,y_startD,datasD,PART_COLUMN,PART_LINE);
EPD_Dis_Part_RAM(x_startE,y_startE,datasE,PART_COLUMN,PART_LINE);
EPD_Part_Update();
}
////////////////////////////////Other newly added functions////////////////////////////////////////////
//Display rotation 180 degrees initialization
void EPD_HW_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
Epaper_READBUSY();
EPD_W21_WriteCMD(0x12); //SWRESET
Epaper_READBUSY();
EPD_W21_WriteCMD(0x3C); //BorderWavefrom
EPD_W21_WriteDATA(0x05);
EPD_W21_WriteCMD(0x01); //Driver output control
EPD_W21_WriteDATA((EPD_HEIGHT-1)%256);
EPD_W21_WriteDATA((EPD_HEIGHT-1)/256);
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteCMD(0x11); //data entry mode
EPD_W21_WriteDATA(0x02);
EPD_W21_WriteCMD(0x44); //set Ram-X address start/end position
EPD_W21_WriteDATA(EPD_WIDTH/8-1);
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteCMD(0x45); //set Ram-Y address start/end position
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteDATA((EPD_HEIGHT-1)%256);
EPD_W21_WriteDATA((EPD_HEIGHT-1)/256);
EPD_W21_WriteCMD(0x21); // Display update control
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteCMD(0x18); //Read built-in temperature sensor
EPD_W21_WriteDATA(0x80);
EPD_W21_WriteCMD(0x4E); // set RAM x address count to 0;
EPD_W21_WriteDATA(EPD_WIDTH/8-1);
EPD_W21_WriteCMD(0x4F); // set RAM y address count to 0X199;
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteDATA(0x00);
Epaper_READBUSY();
}
//Fast refresh 2 initialization
void EPD_HW_Init_Fast2(void)
{
EPD_W21_RST_0; // Module reset
delay(10);//At least 10ms delay
EPD_W21_RST_1;
delay(10); //At least 10ms delay
EPD_W21_WriteCMD(0x12); //SWRESET
Epaper_READBUSY();
EPD_W21_WriteCMD(0x18); //Read built-in temperature sensor
EPD_W21_WriteDATA(0x80);
EPD_W21_WriteCMD(0x22); // Load temperature value
EPD_W21_WriteDATA(0xB1);
EPD_W21_WriteCMD(0x20);
Epaper_READBUSY();
EPD_W21_WriteCMD(0x1A); // Write to temperature register
EPD_W21_WriteDATA(0x5A);
EPD_W21_WriteDATA(0x00);
EPD_W21_WriteCMD(0x22); // Load temperature value
EPD_W21_WriteDATA(0x91);
EPD_W21_WriteCMD(0x20);
Epaper_READBUSY();
}
//Fast 2 display
void EPD_WhiteScreen_ALL_Fast2(const unsigned char *datas)
{
unsigned int i;
EPD_W21_WriteCMD(0x24); //write RAM for black(0)/white (1)
for(i=0;i<EPD_ARRAY;i++)
{
EPD_W21_WriteDATA(pgm_read_byte(&datas[i]));
}
EPD_W21_WriteCMD(0x26); //write RAM for black(0)/white (1)
for(i=0;i<EPD_ARRAY;i++)
{
EPD_W21_WriteDATA(0x00);
}
EPD_Update_Fast();
}
/***********************************************************
end file
***********************************************************/