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epd42/EPD/EPD_4in2_V2.c
Shuanglei Tao f353d23368 Initial commit
2024-11-11 15:35:36 +08:00

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/*****************************************************************************
* | File : EPD_4in2_V2.h
* | Author : Waveshare team
* | Function : 4.2inch e-paper V2
* | Info :
*----------------
* | This version: V1.0
* | Date : 2023-09-12
* | Info :
* -----------------------------------------------------------------------------
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documnetation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
******************************************************************************/
#include "EPD_4in2_V2.h"
const unsigned char LUT_ALL[233]={
0x01, 0x0A, 0x1B, 0x0F, 0x03, 0x01, 0x01,
0x05, 0x0A, 0x01, 0x0A, 0x01, 0x01, 0x01,
0x05, 0x08, 0x03, 0x02, 0x04, 0x01, 0x01,
0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x0A, 0x1B, 0x0F, 0x03, 0x01, 0x01,
0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01,
0x05, 0x48, 0x03, 0x82, 0x84, 0x01, 0x01,
0x01, 0x84, 0x84, 0x82, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x0A, 0x1B, 0x8F, 0x03, 0x01, 0x01,
0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01,
0x05, 0x48, 0x83, 0x82, 0x04, 0x01, 0x01,
0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x8A, 0x1B, 0x8F, 0x03, 0x01, 0x01,
0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01,
0x05, 0x48, 0x83, 0x02, 0x04, 0x01, 0x01,
0x01, 0x04, 0x04, 0x02, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x8A, 0x9B, 0x8F, 0x03, 0x01, 0x01,
0x05, 0x4A, 0x01, 0x8A, 0x01, 0x01, 0x01,
0x05, 0x48, 0x03, 0x42, 0x04, 0x01, 0x01,
0x01, 0x04, 0x04, 0x42, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x00, 0x00, 0x07, 0x17, 0x41, 0xA8,
0x32, 0x30,
};
/******************************************************************************
function : Software reset
parameter:
******************************************************************************/
static void EPD_4IN2_V2_Reset(void)
{
DEV_Digital_Write(EPD_RST_PIN, 1);
DEV_Delay_ms(100);
DEV_Digital_Write(EPD_RST_PIN, 0);
DEV_Delay_ms(2);
DEV_Digital_Write(EPD_RST_PIN, 1);
DEV_Delay_ms(100);
}
/******************************************************************************
function : send command
parameter:
Reg : Command register
******************************************************************************/
void EPD_4IN2_V2_SendCommand(UBYTE Reg)
{
DEV_Digital_Write(EPD_DC_PIN, 0);
DEV_Digital_Write(EPD_CS_PIN, 0);
DEV_SPI_WriteByte(Reg);
DEV_Digital_Write(EPD_CS_PIN, 1);
}
/******************************************************************************
function : send data
parameter:
Data : Write data
******************************************************************************/
void EPD_4IN2_V2_SendData(UBYTE Data)
{
DEV_Digital_Write(EPD_DC_PIN, 1);
DEV_Digital_Write(EPD_CS_PIN, 0);
DEV_SPI_WriteByte(Data);
DEV_Digital_Write(EPD_CS_PIN, 1);
}
/******************************************************************************
function : Wait until the busy_pin goes LOW
parameter:
******************************************************************************/
void EPD_4IN2_V2_ReadBusy(void)
{
while(DEV_Digital_Read(EPD_BUSY_PIN) == 1) { //LOW: idle, HIGH: busy
DEV_Delay_ms(10);
}
}
/******************************************************************************
function : Turn On Display
parameter:
******************************************************************************/
static void EPD_4IN2_V2_TurnOnDisplay(void)
{
EPD_4IN2_V2_SendCommand(0x22);
EPD_4IN2_V2_SendData(0xF7);
EPD_4IN2_V2_SendCommand(0x20);
EPD_4IN2_V2_ReadBusy();
}
static void EPD_4IN2_V2_TurnOnDisplay_Fast(void)
{
EPD_4IN2_V2_SendCommand(0x22);
EPD_4IN2_V2_SendData(0xC7);
EPD_4IN2_V2_SendCommand(0x20);
EPD_4IN2_V2_ReadBusy();
}
static void EPD_4IN2_V2_TurnOnDisplay_Partial(void)
{
EPD_4IN2_V2_SendCommand(0x22);
EPD_4IN2_V2_SendData(0xFF);
EPD_4IN2_V2_SendCommand(0x20);
EPD_4IN2_V2_ReadBusy();
}
static void EPD_4IN2_V2_TurnOnDisplay_4Gray(void)
{
EPD_4IN2_V2_SendCommand(0x22);
EPD_4IN2_V2_SendData(0xCF);
EPD_4IN2_V2_SendCommand(0x20);
EPD_4IN2_V2_ReadBusy();
}
/******************************************************************************
function : Setting the display window
parameter:
******************************************************************************/
static void EPD_4IN2_V2_SetWindows(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend)
{
EPD_4IN2_V2_SendCommand(0x44); // SET_RAM_X_ADDRESS_START_END_POSITION
EPD_4IN2_V2_SendData((Xstart>>3) & 0xFF);
EPD_4IN2_V2_SendData((Xend>>3) & 0xFF);
EPD_4IN2_V2_SendCommand(0x45); // SET_RAM_Y_ADDRESS_START_END_POSITION
EPD_4IN2_V2_SendData(Ystart & 0xFF);
EPD_4IN2_V2_SendData((Ystart >> 8) & 0xFF);
EPD_4IN2_V2_SendData(Yend & 0xFF);
EPD_4IN2_V2_SendData((Yend >> 8) & 0xFF);
}
/******************************************************************************
function : Set Cursor
parameter:
******************************************************************************/
static void EPD_4IN2_V2_SetCursor(UWORD Xstart, UWORD Ystart)
{
EPD_4IN2_V2_SendCommand(0x4E); // SET_RAM_X_ADDRESS_COUNTER
EPD_4IN2_V2_SendData(Xstart & 0xFF);
EPD_4IN2_V2_SendCommand(0x4F); // SET_RAM_Y_ADDRESS_COUNTER
EPD_4IN2_V2_SendData(Ystart & 0xFF);
EPD_4IN2_V2_SendData((Ystart >> 8) & 0xFF);
}
//LUT download
static void EPD_4IN2_V2_4Gray_lut(void)
{
unsigned char i;
//WS byte 0~152, the content of VS[nX-LUTm], TP[nX], RP[n], SR[nXY], FR[n] and XON[nXY]
EPD_4IN2_V2_SendCommand(0x32);
for(i=0;i<227;i++)
{
EPD_4IN2_V2_SendData(LUT_ALL[i]);
}
//WS byte 153, the content of Option for LUT end
EPD_4IN2_V2_SendCommand(0x3F);
EPD_4IN2_V2_SendData(LUT_ALL[i++]);
//WS byte 154, the content of gate leve
EPD_4IN2_V2_SendCommand(0x03);
EPD_4IN2_V2_SendData(LUT_ALL[i++]);//VGH
//WS byte 155~157, the content of source level
EPD_4IN2_V2_SendCommand(0x04);
EPD_4IN2_V2_SendData(LUT_ALL[i++]);//VSH1
EPD_4IN2_V2_SendData(LUT_ALL[i++]);//VSH2
EPD_4IN2_V2_SendData(LUT_ALL[i++]);//VSL
//WS byte 158, the content of VCOM level
EPD_4IN2_V2_SendCommand(0x2c);
EPD_4IN2_V2_SendData(LUT_ALL[i++]);//VCOM
}
/******************************************************************************
function : Initialize the e-Paper register
parameter:
******************************************************************************/
void EPD_4IN2_V2_Init(void)
{
EPD_4IN2_V2_Reset();
EPD_4IN2_V2_ReadBusy();
EPD_4IN2_V2_SendCommand(0x12); // soft reset
EPD_4IN2_V2_ReadBusy();
// EPD_4IN2_V2_SendCommand(0x01); //Driver output control
// EPD_4IN2_V2_SendData((EPD_4IN2_V2_HEIGHT-1)%256);
// EPD_4IN2_V2_SendData((EPD_4IN2_V2_HEIGHT-1)/256);
// EPD_4IN2_V2_SendData(0x00);
EPD_4IN2_V2_SendCommand(0x21); // Display update control
EPD_4IN2_V2_SendData(0x40);
EPD_4IN2_V2_SendData(0x00);
EPD_4IN2_V2_SendCommand(0x3C); //BorderWavefrom
EPD_4IN2_V2_SendData(0x05);
EPD_4IN2_V2_SendCommand(0x11); // data entry mode
EPD_4IN2_V2_SendData(0x03); // X-mode
EPD_4IN2_V2_SetWindows(0, 0, EPD_4IN2_V2_WIDTH-1, EPD_4IN2_V2_HEIGHT-1);
EPD_4IN2_V2_SetCursor(0, 0);
EPD_4IN2_V2_ReadBusy();
}
/******************************************************************************
function : Initialize Fast the e-Paper register
parameter:
******************************************************************************/
void EPD_4IN2_V2_Init_Fast(UBYTE Mode)
{
EPD_4IN2_V2_Reset();
EPD_4IN2_V2_ReadBusy();
EPD_4IN2_V2_SendCommand(0x12); // soft reset
EPD_4IN2_V2_ReadBusy();
EPD_4IN2_V2_SendCommand(0x21);
EPD_4IN2_V2_SendData(0x40);
EPD_4IN2_V2_SendData(0x00);
EPD_4IN2_V2_SendCommand(0x3C);
EPD_4IN2_V2_SendData(0x05);
if(Mode == Seconds_1_5S)
{
//1.5s
EPD_4IN2_V2_SendCommand(0x1A); // Write to temperature register
EPD_4IN2_V2_SendData(0x6E);
}
else if(Mode == Seconds_1S)
{
//1s
EPD_4IN2_V2_SendCommand(0x1A); // Write to temperature register
EPD_4IN2_V2_SendData(0x5A);
}
EPD_4IN2_V2_SendCommand(0x22); // Load temperature value
EPD_4IN2_V2_SendData(0x91);
EPD_4IN2_V2_SendCommand(0x20);
EPD_4IN2_V2_ReadBusy();
EPD_4IN2_V2_SendCommand(0x11); // data entry mode
EPD_4IN2_V2_SendData(0x03); // X-mode
EPD_4IN2_V2_SetWindows(0, 0, EPD_4IN2_V2_WIDTH-1, EPD_4IN2_V2_HEIGHT-1);
EPD_4IN2_V2_SetCursor(0, 0);
EPD_4IN2_V2_ReadBusy();
}
void EPD_4IN2_V2_Init_4Gray(void)
{
EPD_4IN2_V2_Reset();
EPD_4IN2_V2_SendCommand(0x12); //SWRESET
EPD_4IN2_V2_ReadBusy();
EPD_4IN2_V2_SendCommand(0x21);
EPD_4IN2_V2_SendData(0x00);
EPD_4IN2_V2_SendData(0x00);
EPD_4IN2_V2_SendCommand(0x3C);
EPD_4IN2_V2_SendData(0x03);
EPD_4IN2_V2_SendCommand(0x0C); //BTST
EPD_4IN2_V2_SendData(0x8B);//8B
EPD_4IN2_V2_SendData(0x9C);//9C
EPD_4IN2_V2_SendData(0xA4);//96 A4
EPD_4IN2_V2_SendData(0x0F);//0F
// EPD_4IN2_V2_SendCommand(0x01); // 驱动输出控制 drive output control
// EPD_4IN2_V2_SendData(0x2B); // Y 的低字节
// EPD_4IN2_V2_SendData(0x01); // Y 的高字节
// EPD_4IN2_V2_SendData(0x00);
EPD_4IN2_V2_4Gray_lut(); //LUT
EPD_4IN2_V2_SendCommand(0x11); // data entry mode
EPD_4IN2_V2_SendData(0x03); // X-mode
EPD_4IN2_V2_SetWindows(0, 0, EPD_4IN2_V2_WIDTH-1, EPD_4IN2_V2_HEIGHT-1);
EPD_4IN2_V2_SetCursor(0, 0);
}
/******************************************************************************
function : Clear screen
parameter:
******************************************************************************/
void EPD_4IN2_V2_Clear(void)
{
UWORD Width, Height;
Width = (EPD_4IN2_V2_WIDTH % 8 == 0)? (EPD_4IN2_V2_WIDTH / 8 ): (EPD_4IN2_V2_WIDTH / 8 + 1);
Height = EPD_4IN2_V2_HEIGHT;
EPD_4IN2_V2_SendCommand(0x24);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_V2_SendData(0xFF);
}
}
EPD_4IN2_V2_SendCommand(0x26);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_V2_SendData(0xFF);
}
}
EPD_4IN2_V2_TurnOnDisplay();
}
/******************************************************************************
function : Sends the image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void EPD_4IN2_V2_Display_Half(UBYTE *Image, UBYTE Region)
{
UWORD Width, Height;
Width = (EPD_4IN2_V2_WIDTH % 8 == 0)? (EPD_4IN2_V2_WIDTH / 8 ): (EPD_4IN2_V2_WIDTH / 8 + 1);
Height = EPD_4IN2_V2_HEIGHT;
if(Region == 1){
EPD_4IN2_V2_SendCommand(0x24);
for (UWORD j = 0; j < Height/2; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_V2_SendData(Image[i + j * Width]);
}
}
EPD_4IN2_V2_SendCommand(0x26);
for (UWORD j = 0; j < Height/2; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_V2_SendData(Image[i + j * Width]);
}
}
}
else if(Region == 2){
EPD_4IN2_V2_SendCommand(0x24);
for (UWORD j = 0; j < Height/2; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_V2_SendData(Image[i + j * Width]);
}
}
EPD_4IN2_V2_SendCommand(0x26);
for (UWORD j = 0; j < Height/2; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_V2_SendData(Image[i + j * Width]);
}
}
EPD_4IN2_V2_TurnOnDisplay();
}
}
/******************************************************************************
function : Sends the image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void EPD_4IN2_V2_Display(UBYTE *Image)
{
UWORD Width, Height;
Width = (EPD_4IN2_V2_WIDTH % 8 == 0)? (EPD_4IN2_V2_WIDTH / 8 ): (EPD_4IN2_V2_WIDTH / 8 + 1);
Height = EPD_4IN2_V2_HEIGHT;
EPD_4IN2_V2_SendCommand(0x24);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_V2_SendData(Image[i + j * Width]);
}
}
EPD_4IN2_V2_SendCommand(0x26);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_V2_SendData(Image[i + j * Width]);
}
}
EPD_4IN2_V2_TurnOnDisplay();
}
/******************************************************************************
function : Sends the image buffer in RAM to e-Paper and fast displays
parameter:
******************************************************************************/
void EPD_4IN2_V2_Display_Fast(UBYTE *Image)
{
UWORD Width, Height;
Width = (EPD_4IN2_V2_WIDTH % 8 == 0)? (EPD_4IN2_V2_WIDTH / 8 ): (EPD_4IN2_V2_WIDTH / 8 + 1);
Height = EPD_4IN2_V2_HEIGHT;
EPD_4IN2_V2_SendCommand(0x24);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_V2_SendData(Image[i + j * Width]);
}
}
EPD_4IN2_V2_SendCommand(0x26);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_4IN2_V2_SendData(Image[i + j * Width]);
}
}
EPD_4IN2_V2_TurnOnDisplay_Fast();
}
void EPD_4IN2_V2_Display_4Gray(UBYTE *Image)
{
UDOUBLE i,j,k,m;
UBYTE temp1,temp2,temp3;
/****Color display description****
white gray2 gray1 black
0x10| 01 01 00 00
0x13| 01 00 01 00
*********************************/
EPD_4IN2_V2_SendCommand(0x24);
// EPD_4IN2_HEIGHT
// EPD_4IN2_WIDTH
for(m = 0; m<EPD_4IN2_V2_HEIGHT;m++)
for(i=0;i<EPD_4IN2_V2_WIDTH/8;i++)
{
temp3=0;
for(j=0;j<2;j++)
{
temp1 = Image[(m*(EPD_4IN2_V2_WIDTH/8)+i)*2+j];
for(k=0;k<2;k++)
{
temp2 = temp1&0xC0 ;
if(temp2 == 0xC0)
temp3 |= 0x01;//white
else if(temp2 == 0x00)
temp3 |= 0x00; //black
else if(temp2 == 0x80)
temp3 |= 0x00; //gray1
else //0x40
temp3 |= 0x01; //gray2
temp3 <<= 1;
temp1 <<= 2;
temp2 = temp1&0xC0 ;
if(temp2 == 0xC0) //white
temp3 |= 0x01;
else if(temp2 == 0x00) //black
temp3 |= 0x00;
else if(temp2 == 0x80)
temp3 |= 0x00; //gray1
else //0x40
temp3 |= 0x01; //gray2
if(j!=1 || k!=1)
temp3 <<= 1;
temp1 <<= 2;
}
}
EPD_4IN2_V2_SendData(temp3);
}
// new data
EPD_4IN2_V2_SendCommand(0x26);
for(m = 0; m<EPD_4IN2_V2_HEIGHT;m++)
for(i=0;i<EPD_4IN2_V2_WIDTH/8;i++)
{
temp3=0;
for(j=0;j<2;j++)
{
temp1 = Image[(m*(EPD_4IN2_V2_WIDTH/8)+i)*2+j];
for(k=0;k<2;k++)
{
temp2 = temp1&0xC0 ;
if(temp2 == 0xC0)
temp3 |= 0x01;//white
else if(temp2 == 0x00)
temp3 |= 0x00; //black
else if(temp2 == 0x80)
temp3 |= 0x01; //gray1
else //0x40
temp3 |= 0x00; //gray2
temp3 <<= 1;
temp1 <<= 2;
temp2 = temp1&0xC0 ;
if(temp2 == 0xC0) //white
temp3 |= 0x01;
else if(temp2 == 0x00) //black
temp3 |= 0x00;
else if(temp2 == 0x80)
temp3 |= 0x01; //gray1
else //0x40
temp3 |= 0x00; //gray2
if(j!=1 || k!=1)
temp3 <<= 1;
temp1 <<= 2;
}
}
EPD_4IN2_V2_SendData(temp3);
}
EPD_4IN2_V2_TurnOnDisplay_4Gray();
}
// Send partial data for partial refresh
void EPD_4IN2_V2_PartialDisplay(UBYTE *Image, UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend)
{
if((Xstart % 8 + Xend % 8 == 8 && Xstart % 8 > Xend % 8) || Xstart % 8 + Xend % 8 == 0 || (Xend - Xstart)%8 == 0)
{
Xstart = Xstart / 8 ;
Xend = Xend / 8;
}
else
{
Xstart = Xstart / 8 ;
Xend = Xend % 8 == 0 ? Xend / 8 : Xend / 8 + 1;
}
UWORD i, Width;
Width = Xend - Xstart;
UWORD IMAGE_COUNTER = Width * (Yend-Ystart);
Xend -= 1;
Yend -= 1;
EPD_4IN2_V2_SendCommand(0x3C); //BorderWavefrom,
EPD_4IN2_V2_SendData(0x80);
EPD_4IN2_V2_SendCommand(0x21);
EPD_4IN2_V2_SendData(0x00);
EPD_4IN2_V2_SendData(0x00);
EPD_4IN2_V2_SendCommand(0x3C);
EPD_4IN2_V2_SendData(0x80);
EPD_4IN2_V2_SendCommand(0x44); // set RAM x address start/end, in page 35
EPD_4IN2_V2_SendData(Xstart & 0xff); // RAM x address start at 00h;
EPD_4IN2_V2_SendData(Xend & 0xff); // RAM x address end at 0fh(15+1)*8->128
EPD_4IN2_V2_SendCommand(0x45); // set RAM y address start/end, in page 35
EPD_4IN2_V2_SendData(Ystart & 0xff); // RAM y address start at 0127h;
EPD_4IN2_V2_SendData((Ystart>>8) & 0x01); // RAM y address start at 0127h;
EPD_4IN2_V2_SendData(Yend & 0xff); // RAM y address end at 00h;
EPD_4IN2_V2_SendData((Yend>>8) & 0x01);
EPD_4IN2_V2_SendCommand(0x4E); // set RAM x address count to 0;
EPD_4IN2_V2_SendData(Xstart & 0xff);
EPD_4IN2_V2_SendCommand(0x4F); // set RAM y address count to 0X127;
EPD_4IN2_V2_SendData(Ystart & 0xff);
EPD_4IN2_V2_SendData((Ystart>>8) & 0x01);
EPD_4IN2_V2_SendCommand(0x24);
for (i = 0; i < IMAGE_COUNTER; i++) {
EPD_4IN2_V2_SendData(Image[i]);
}
EPD_4IN2_V2_TurnOnDisplay_Partial();
}
void EPD_4IN2_V2_UpdateDisplay(void)
{
EPD_4IN2_V2_TurnOnDisplay();
}
/******************************************************************************
function : Enter sleep mode
parameter:
******************************************************************************/
void EPD_4IN2_V2_Sleep(void)
{
EPD_4IN2_V2_SendCommand(0x10); // DEEP_SLEEP
EPD_4IN2_V2_SendData(0x01);
DEV_Delay_ms(200);
}
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