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#include "Display_EPD_W21_spi.h"
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#include "Display_EPD_W21.h"
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unsigned char oldData[12480];
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unsigned char oldDataP[256];
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unsigned char oldDataA[256];
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unsigned char oldDataB[256];
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unsigned char oldDataC[256];
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unsigned char oldDataD[256];
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unsigned char oldDataE[256];
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unsigned char partFlag=1;
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void lcd_chkstatus(void)
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{
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while(!isEPD_W21_BUSY); //0:BUSY, 1:FREE
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}
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//UC8253
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void EPD_Init(void)
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{
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EPD_W21_RST_0; // Module reset
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delay(10);//At least 10ms delay
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EPD_W21_RST_1;
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delay(10);//At least 10ms delay
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EPD_W21_WriteCMD(0x00); // panel setting PSR
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EPD_W21_WriteDATA(0x1F); // RES1 RES0 REG KW/R UD SHL SHD_N RST_N 0xFF=LUT from register,0xDF=LUT from OTP. (Default)
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EPD_W21_WriteCMD(0x04); //Power on
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lcd_chkstatus(); //waiting for the electronic paper IC to release the idle signal
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}
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void EPD_Init_Fast(void) //1.0s
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{
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EPD_W21_RST_0; // Module reset
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delay(10);//At least 10ms delay
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EPD_W21_RST_1;
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delay(10);//At least 10ms delay
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EPD_W21_WriteCMD(0x00); // panel setting PSR
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EPD_W21_WriteDATA(0x1F); // RES1 RES0 REG KW/R UD SHL SHD_N RST_N 0xFF=LUT from register,0xDF=LUT from OTP. (Default)
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EPD_W21_WriteCMD(0x04); //Power on
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lcd_chkstatus(); //waiting for the electronic paper IC to release the idle signal
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EPD_W21_WriteCMD(0xE0);
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EPD_W21_WriteDATA(0x02);
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EPD_W21_WriteCMD(0xE5);
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EPD_W21_WriteDATA(0x5A);
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}
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void EPD_init_Fast2(void) //1.5s
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{
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EPD_W21_RST_0; // Module reset
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delay(10);//At least 10ms delay
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EPD_W21_RST_1;
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delay(10);//At least 10ms delay
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EPD_W21_WriteCMD(0x00); // panel setting PSR
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EPD_W21_WriteDATA(0x1F); // RES1 RES0 REG KW/R UD SHL SHD_N RST_N 0xFF=LUT from register,0xDF=LUT from OTP. (Default)
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EPD_W21_WriteCMD(0x04); //Power on
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lcd_chkstatus(); //waiting for the electronic paper IC to release the idle signal
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EPD_W21_WriteCMD(0xE0);
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EPD_W21_WriteDATA(0x02);
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EPD_W21_WriteCMD(0xE5);
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EPD_W21_WriteDATA(0x6E);
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}
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void EPD_Init_Part(void)
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{
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EPD_W21_RST_0; // Module reset
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delay(10);//At least 10ms delay
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EPD_W21_RST_1;
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delay(10);//At least 10ms delay
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EPD_W21_WriteCMD(0x00); // panel setting PSR
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EPD_W21_WriteDATA(0x1F); // RES1 RES0 REG KW/R UD SHL SHD_N RST_N 0xFF=LUT from register,0xDF=LUT from OTP. (Default)
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EPD_W21_WriteCMD(0x04); //Power on
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lcd_chkstatus(); //waiting for the electronic paper IC to release the idle signal
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EPD_W21_WriteCMD(0xE0);
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EPD_W21_WriteDATA(0x02);
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EPD_W21_WriteCMD(0xE5);
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EPD_W21_WriteDATA(0x79);
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EPD_W21_WriteCMD(0x50);
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EPD_W21_WriteDATA(0xD7);
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}
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void EPD_DeepSleep(void)
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{
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EPD_W21_WriteCMD(0X02); //power off
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lcd_chkstatus(); //waiting for the electronic paper IC to release the idle signal
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delay(100);//At least 100ms delay
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EPD_W21_WriteCMD(0X07); //deep sleep
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EPD_W21_WriteDATA(0xA5);
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}
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void Power_off(void)
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{
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EPD_W21_WriteCMD(0x02); //POWER ON
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lcd_chkstatus();
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}
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//Full screen refresh update function
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void EPD_Update(void)
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{
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//Refresh
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EPD_W21_WriteCMD(0x12); //DISPLAY REFRESH
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delay(1); //!!!The delay here is necessary, 200uS at least!!!
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lcd_chkstatus(); //waiting for the electronic paper IC to release the idle signal
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}
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void EPD_WhiteScreen_ALL(const unsigned char *datas)
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{
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unsigned int i;
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//Write Data
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EPD_W21_WriteCMD(0x10); //Transfer old data
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for(i=0;i<EPD_ARRAY;i++)
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{
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EPD_W21_WriteDATA(oldData[i]); //Transfer the actual displayed data
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}
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EPD_W21_WriteCMD(0x13); //Transfer new data
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for(i=0;i<EPD_ARRAY;i++)
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{
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EPD_W21_WriteDATA(datas[i]); //Transfer the actual displayed data
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oldData[i]=datas[i];
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}
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EPD_Update();
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Power_off();
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}
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//Clear screen display
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void EPD_WhiteScreen_White(void)
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{
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unsigned int i;
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//Write Data
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EPD_W21_WriteCMD(0x10);
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for(i=0;i<EPD_ARRAY;i++)
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{
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EPD_W21_WriteDATA(oldData[i]);
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}
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EPD_W21_WriteCMD(0x13);
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for(i=0;i<EPD_ARRAY;i++)
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{
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EPD_W21_WriteDATA(0xff);
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oldData[i]=0xff;
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}
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EPD_Update();
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Power_off();
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}
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//Display all black
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void EPD_WhiteScreen_Black(void)
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{
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unsigned int i;
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//Write Data
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EPD_W21_WriteCMD(0x10);
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for(i=0;i<EPD_ARRAY;i++)
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{
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EPD_W21_WriteDATA(oldData[i]);
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}
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EPD_W21_WriteCMD(0x13);
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for(i=0;i<EPD_ARRAY;i++)
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{
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EPD_W21_WriteDATA(0x00);
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oldData[i]=0x00;
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}
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EPD_Update();
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Power_off();
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}
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//Partial refresh of background display, this function is necessary, please do not delete it!!!
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void EPD_SetRAMValue_BaseMap( const unsigned char * datas)
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{
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unsigned int i;
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EPD_W21_WriteCMD(0x10); //write old data
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for(i=0;i<EPD_ARRAY;i++)
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{
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EPD_W21_WriteDATA(oldData[i]);
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}
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EPD_W21_WriteCMD(0x13); //write new data
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for(i=0;i<EPD_ARRAY;i++)
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{
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EPD_W21_WriteDATA(datas[i]);
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oldData[i]=datas[i];
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}
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EPD_Update();
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Power_off();
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}
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void EPD_Dis_Part(unsigned int x_start,unsigned int y_start,const unsigned char * datas,unsigned int PART_COLUMN,unsigned int PART_LINE)
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{
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unsigned int i;
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unsigned int x_end,y_end;
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x_start=x_start-x_start%8;
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x_end=x_start+PART_LINE-1;
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y_end=y_start+PART_COLUMN-1;
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EPD_Init_Part();
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EPD_W21_WriteCMD(0x91); //This command makes the display enter partial mode
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EPD_W21_WriteCMD(0x90); //resolution setting
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EPD_W21_WriteDATA (x_start); //x-start
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EPD_W21_WriteDATA (x_end); //x-end
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EPD_W21_WriteDATA (y_start/256);
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EPD_W21_WriteDATA (y_start%256); //y-start
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EPD_W21_WriteDATA (y_end/256);
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EPD_W21_WriteDATA (y_end%256); //y-end
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EPD_W21_WriteDATA (0x01);
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if(partFlag==1)
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{
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partFlag=0;
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EPD_W21_WriteCMD(0x10); //writes Old data to SRAM for programming
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for(i=0;i<PART_COLUMN*PART_LINE/8;i++)
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EPD_W21_WriteDATA(0xFF);
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}
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else
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{
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EPD_W21_WriteCMD(0x10); //writes Old data to SRAM for programming
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for(i=0;i<PART_COLUMN*PART_LINE/8;i++)
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EPD_W21_WriteDATA(oldDataP[i]);
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}
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EPD_W21_WriteCMD(0x13); //writes New data to SRAM.
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for(i=0;i<PART_COLUMN*PART_LINE/8;i++)
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{
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EPD_W21_WriteDATA(datas[i]);
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oldDataP[i]=datas[i];
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}
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EPD_Update();
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Power_off();
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}
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//Full screen partial refresh display
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void EPD_Dis_PartAll(const unsigned char * datas)
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{
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unsigned int i;
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EPD_Init_Part();
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//Write Data
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EPD_W21_WriteCMD(0x10); //Transfer old data
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for(i=0;i<EPD_ARRAY;i++)
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{
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EPD_W21_WriteDATA(oldData[i]); //Transfer the actual displayed data
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}
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EPD_W21_WriteCMD(0x13); //Transfer new data
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for(i=0;i<EPD_ARRAY;i++)
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{
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EPD_W21_WriteDATA(datas[i]); //Transfer the actual displayed data
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oldData[i]=datas[i];
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}
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EPD_Update();
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Power_off();
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}
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//Partial refresh write address and data
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void EPD_Dis_Part_RAM(unsigned int x_start,unsigned int y_start,
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const unsigned char * datas_A,const unsigned char * datas_B,
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const unsigned char * datas_C,const unsigned char * datas_D,const unsigned char * datas_E,
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unsigned char num,unsigned int PART_COLUMN,unsigned int PART_LINE)
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{
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unsigned int i,j,x_end,y_end;
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x_start=x_start-x_start%8;
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x_end=x_start+PART_LINE*num-1;
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y_end=y_start+PART_COLUMN-1;
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EPD_Init_Part();
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EPD_W21_WriteCMD(0x91); //This command makes the display enter partial mode
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EPD_W21_WriteCMD(0x90); //resolution setting
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EPD_W21_WriteDATA (x_start); //x-start
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EPD_W21_WriteDATA (x_end); //x-end
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EPD_W21_WriteDATA (y_start/256);
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EPD_W21_WriteDATA (y_start%256); //y-start
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EPD_W21_WriteDATA (y_end/256);
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EPD_W21_WriteDATA (y_end%256); //y-end
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EPD_W21_WriteDATA (0x01);
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if(partFlag==1)
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{
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partFlag=0;
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EPD_W21_WriteCMD(0x10); //writes Old data to SRAM for programming
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for(i=0;i<PART_COLUMN*PART_LINE*num/8;i++)
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EPD_W21_WriteDATA(0xFF);
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}
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else
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{
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EPD_W21_WriteCMD(0x10); //writes Old data to SRAM for programming
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for(i=0;i<PART_COLUMN;i++)
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{
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for(j=0;j<PART_LINE/8;j++)
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EPD_W21_WriteDATA(oldDataA[i*PART_LINE/8+j]);
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for(j=0;j<PART_LINE/8;j++)
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EPD_W21_WriteDATA(oldDataB[i*PART_LINE/8+j]);
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for(j=0;j<PART_LINE/8;j++)
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EPD_W21_WriteDATA(oldDataC[i*PART_LINE/8+j]);
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for(j=0;j<PART_LINE/8;j++)
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EPD_W21_WriteDATA(oldDataD[i*PART_LINE/8+j]);
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for(j=0;j<PART_LINE/8;j++)
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EPD_W21_WriteDATA(oldDataE[i*PART_LINE/8+j]);
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}
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}
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EPD_W21_WriteCMD(0x13); //writes New data to SRAM.
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for(i=0;i<PART_COLUMN;i++)
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{
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for(j=0;j<PART_LINE/8;j++)
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{
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EPD_W21_WriteDATA(datas_A[i*PART_LINE/8+j]);
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oldDataA[i*PART_LINE/8+j]=datas_A[i*PART_LINE/8+j];
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}
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for(j=0;j<PART_LINE/8;j++)
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{
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EPD_W21_WriteDATA(datas_B[i*PART_LINE/8+j]);
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oldDataB[i*PART_LINE/8+j]=datas_B[i*PART_LINE/8+j];
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}
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for(j=0;j<PART_LINE/8;j++)
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{
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EPD_W21_WriteDATA(datas_C[i*PART_LINE/8+j]);
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oldDataC[i*PART_LINE/8+j]=datas_C[i*PART_LINE/8+j];
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}
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for(j=0;j<PART_LINE/8;j++)
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{
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EPD_W21_WriteDATA(datas_D[i*PART_LINE/8+j]);
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oldDataD[i*PART_LINE/8+j]=datas_D[i*PART_LINE/8+j];
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}
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for(j=0;j<PART_LINE/8;j++)
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{
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EPD_W21_WriteDATA(datas_E[i*PART_LINE/8+j]);
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oldDataE[i*PART_LINE/8+j]=datas_E[i*PART_LINE/8+j];
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}
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}
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}
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//Clock display
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void EPD_Dis_Part_Time(unsigned int x_start,unsigned int y_start,
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const unsigned char * datas_A,const unsigned char * datas_B,
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const unsigned char * datas_C,const unsigned char * datas_D,const unsigned char * datas_E,
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unsigned char num,unsigned int PART_COLUMN,unsigned int PART_LINE)
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{
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EPD_Dis_Part_RAM(x_start,y_start,datas_A,datas_B,datas_C,datas_D,datas_E,num,PART_COLUMN,PART_LINE);
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EPD_Update();
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Power_off();
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}
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////////////////////////////////Other newly added functions////////////////////////////////////////////
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//Display rotation 180 degrees initialization
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void EPD_Init_180(void)
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{
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EPD_W21_RST_0; // Module reset
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delay(10);//At least 10ms delay
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EPD_W21_RST_1;
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delay(10); //At least 10ms delay
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EPD_W21_WriteCMD(0x00);
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EPD_W21_WriteDATA(0x13); //180 mirror
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EPD_W21_WriteCMD(0x04); //POWER ON
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delay(300);
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lcd_chkstatus();
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EPD_W21_WriteCMD(0X50); //VCOM AND DATA INTERVAL SETTING
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EPD_W21_WriteDATA(0x97); //WBmode:VBDF 17|D7 VBDW 97 VBDB 57 WBRmode:VBDF F7 VBDW 77 VBDB 37 VBDR B7
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}
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/***********************************************************
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end file
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***********************************************************/
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@@ -0,0 +1,33 @@
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#ifndef _DISPLAY_EPD_W21_H_
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#define _DISPLAY_EPD_W21_H_
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#define EPD_WIDTH 240
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#define EPD_HEIGHT 320
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#define EPD_ARRAY EPD_WIDTH*EPD_HEIGHT/8
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//Full screen refresh display
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void EPD_Init(void);
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void EPD_Init_180(void);
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void EPD_WhiteScreen_ALL(const unsigned char *datas);
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void EPD_WhiteScreen_White(void);
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void EPD_WhiteScreen_Black(void);
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void EPD_DeepSleep(void);
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//Partial refresh display
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void EPD_Init_Part(void);
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void EPD_SetRAMValue_BaseMap(const unsigned char * datas);
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void EPD_Dis_PartAll(const unsigned char * datas);
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void EPD_Dis_Part(unsigned int x_start,unsigned int y_start,const unsigned char * datas,unsigned int PART_COLUMN,unsigned int PART_LINE);
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void EPD_Dis_Part_Time(unsigned int x_start,unsigned int y_start,
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const unsigned char * datas_A,const unsigned char * datas_B,
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const unsigned char * datas_C,const unsigned char * datas_D,const unsigned char * datas_E,
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unsigned char num,unsigned int PART_COLUMN,unsigned int PART_LINE);
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//Fast refresh display
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void EPD_Init_Fast(void);
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void EPD_WhiteScreen_ALL_Fast(const unsigned char *datas);
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//GUI display
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void EPD_Init_GUI(void);
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void EPD_Display(unsigned char *Image);
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#endif
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@@ -0,0 +1,25 @@
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#include "Display_EPD_W21_spi.h"
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#include <SPI.h>
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//SPI write byte
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void SPI_Write(unsigned char value)
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{
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SPI.transfer(value);
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}
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//SPI write command
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void EPD_W21_WriteCMD(unsigned char command)
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{
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EPD_W21_CS_0;
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EPD_W21_DC_0; // D/C# 0:command 1:data
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SPI_Write(command);
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EPD_W21_CS_1;
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}
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//SPI write data
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void EPD_W21_WriteDATA(unsigned char datas)
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{
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EPD_W21_CS_0;
|
||||
EPD_W21_DC_1; // D/C# 0:command 1:data
|
||||
SPI_Write(datas);
|
||||
EPD_W21_CS_1;
|
||||
}
|
||||
@@ -0,0 +1,22 @@
|
||||
#ifndef _DISPLAY_EPD_W21_SPI_
|
||||
#define _DISPLAY_EPD_W21_SPI_
|
||||
#include "Arduino.h"
|
||||
|
||||
//IO settings
|
||||
//SCK--GPIO23(SCLK)
|
||||
//SDIN---GPIO18(MOSI)
|
||||
#define isEPD_W21_BUSY digitalRead(A14) //BUSY
|
||||
#define EPD_W21_RST_0 digitalWrite(A15,LOW) //RES
|
||||
#define EPD_W21_RST_1 digitalWrite(A15,HIGH)
|
||||
#define EPD_W21_DC_0 digitalWrite(A16,LOW) //DC
|
||||
#define EPD_W21_DC_1 digitalWrite(A16,HIGH)
|
||||
#define EPD_W21_CS_0 digitalWrite(A17,LOW) //CS
|
||||
#define EPD_W21_CS_1 digitalWrite(A17,HIGH)
|
||||
|
||||
|
||||
void SPI_Write(unsigned char value);
|
||||
void EPD_W21_WriteDATA(unsigned char datas);
|
||||
void EPD_W21_WriteCMD(unsigned char command);
|
||||
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,94 @@
|
||||
#include <SPI.h>
|
||||
//EPD
|
||||
#include "Display_EPD_W21_spi.h"
|
||||
#include "Display_EPD_W21.h"
|
||||
#include "Ap_29demo.h"
|
||||
|
||||
void setup() {
|
||||
pinMode(A14, INPUT); //BUSY
|
||||
pinMode(A15, OUTPUT); //RES
|
||||
pinMode(A16, OUTPUT); //DC
|
||||
pinMode(A17, OUTPUT); //CS
|
||||
//SPI
|
||||
SPI.beginTransaction(SPISettings(10000000, MSBFIRST, SPI_MODE0));
|
||||
SPI.begin ();
|
||||
}
|
||||
|
||||
//Tips//
|
||||
/*
|
||||
1.Flickering is normal when EPD is performing a full screen update to clear ghosting from the previous image so to ensure better clarity and legibility for the new image.
|
||||
2.There will be no flicker when EPD performs a partial refresh.
|
||||
3.Please make sue that EPD enters sleep mode when refresh is completed and always leave the sleep mode command. Otherwise, this may result in a reduced lifespan of EPD.
|
||||
4.Please refrain from inserting EPD to the FPC socket or unplugging it when the MCU is being powered to prevent potential damage.)
|
||||
5.Re-initialization is required for every full screen update.
|
||||
6.When porting the program, set the BUSY pin to input mode and other pins to output mode.
|
||||
*/
|
||||
void loop() {
|
||||
unsigned char i;
|
||||
#if 1 //Full screen refresh, fast refresh, and partial refresh demostration.
|
||||
|
||||
EPD_Init(); //Full screen refresh initialization.
|
||||
EPD_WhiteScreen_White(); //Clear screen function.
|
||||
EPD_DeepSleep(); //Enter the sleep mode and please do not delete it, otherwise it will reduce the lifespan of the screen.
|
||||
delay(2000); //Delay for 2s.
|
||||
/************Full display(2s)*******************/
|
||||
EPD_Init(); //Full screen refresh initialization.
|
||||
EPD_WhiteScreen_ALL(gImage_1); //To Display one image using full screen refresh.
|
||||
EPD_DeepSleep(); //Enter the sleep mode and please do not delete it, otherwise it will reduce the lifespan of the screen.
|
||||
delay(2000); //Delay for 2s.
|
||||
/************Fast refresh mode(1.5s)*******************/
|
||||
EPD_Init_Fast(); //Fast refresh initialization.
|
||||
EPD_WhiteScreen_ALL(gImage_1); //To display one image using fast refresh.
|
||||
EPD_DeepSleep(); //Enter the sleep mode and please do not delete it, otherwise it will reduce the lifespan of the screen.
|
||||
delay(2000); //Delay for 2s.
|
||||
#if 1 //Partial refresh demostration.
|
||||
//Partial refresh demo support displaying a clock at 5 locations with 00:00. If you need to perform partial refresh more than 5 locations, please use the feature of using partial refresh at the full screen demo.
|
||||
//After 5 partial refreshes, implement a full screen refresh to clear the ghosting caused by partial refreshes.
|
||||
//////////////////////Partial refresh time demo/////////////////////////////////////
|
||||
EPD_Init(); //Electronic paper initialization.
|
||||
EPD_SetRAMValue_BaseMap(gImage_basemap); //Please do not delete the background color function, otherwise it will cause unstable display during partial refresh.
|
||||
for(i=0;i<6;i++)
|
||||
{
|
||||
EPD_Dis_Part_Time(40,150,Num[1],Num[0],gImage_numdot,Num[0],Num[i],5,64,32); //x,y,DATA-A~E,number,Resolution 32*64
|
||||
}
|
||||
EPD_DeepSleep(); //Enter the sleep mode and please do not delete it, otherwise it will reduce the lifespan of the screen.
|
||||
delay(2000); //Delay for 2s.
|
||||
|
||||
EPD_Init(); //Full screen refresh initialization.
|
||||
EPD_WhiteScreen_White(); //Clear screen function.
|
||||
EPD_DeepSleep(); //Enter the sleep mode and please do not delete it, otherwise it will reduce the lifespan of the screen.
|
||||
delay(2000); //Delay for 2s.
|
||||
#endif
|
||||
|
||||
#if 0 //Demo of using partial refresh to update the full screen, to enable this feature, please change 0 to 1.
|
||||
//After 5 partial refreshes, implement a full screen refresh to clear the ghosting caused by partial refreshes.
|
||||
//////////////////////Partial refresh time demo/////////////////////////////////////
|
||||
EPD_Init(); //Full screen refresh initialization.
|
||||
EPD_WhiteScreen_White(); //Clear screen function.
|
||||
EPD_Dis_PartAll(gImage_p1);
|
||||
EPD_Dis_PartAll(gImage_p2);
|
||||
EPD_Dis_PartAll(gImage_p3);
|
||||
EPD_DeepSleep();//Enter the sleep mode and please do not delete it, otherwise it will reduce the lifespan of the screen.
|
||||
delay(2000); //Delay for 2s.
|
||||
|
||||
EPD_Init(); //Full screen refresh initialization.
|
||||
EPD_WhiteScreen_White(); //Clear screen function.
|
||||
EPD_DeepSleep(); //Enter the sleep mode and please do not delete it, otherwise it will reduce the lifespan of the screen.
|
||||
delay(2000); //Delay for 2s.
|
||||
#endif
|
||||
|
||||
#if 0 //Demonstration of full screen refresh with 180-degree rotation, to enable this feature, please change 0 to 1.
|
||||
/************Full display(2s)*******************/
|
||||
EPD_Init_180(); //Full screen refresh initialization.
|
||||
EPD_WhiteScreen_ALL(gImage_1); //To Display one image using full screen refresh.
|
||||
EPD_DeepSleep(); //Enter the sleep mode and please do not delete it, otherwise it will reduce the lifespan of the screen.
|
||||
delay(2000); //Delay for 2s.
|
||||
#endif
|
||||
#endif
|
||||
while(1); // The program stops here
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
//////////////////////////////////END//////////////////////////////////////////////////
|
||||
Reference in New Issue
Block a user