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initial commit, display with commands working

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aeroreyna
2026-01-03 20:37:58 -05:00
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Pico_ePaper_Code/c/lib/e-Paper/EPD_2in7.c
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/*****************************************************************************
* | File : EPD_2in7.c
* | Author : Waveshare team
* | Function : 2.9inch e-paper V2
* | Info :
*----------------
* | This version: V1.0
* | Date : 2021-06-03
* | 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_2in7.h"
#include "Debug.h"
static const unsigned char EPD_2in7_lut_vcom_dc[] = {
0x00 ,0x00,
0x00 ,0x08 ,0x00 ,0x00 ,0x00 ,0x02,
0x60 ,0x28 ,0x28 ,0x00 ,0x00 ,0x01,
0x00 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0x00 ,0x12 ,0x12 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
};
static const unsigned char EPD_2in7_lut_ww[] = {
0x40 ,0x08 ,0x00 ,0x00 ,0x00 ,0x02,
0x90 ,0x28 ,0x28 ,0x00 ,0x00 ,0x01,
0x40 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0xA0 ,0x12 ,0x12 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
static const unsigned char EPD_2in7_lut_bw[] = {
0x40 ,0x08 ,0x00 ,0x00 ,0x00 ,0x02,
0x90 ,0x28 ,0x28 ,0x00 ,0x00 ,0x01,
0x40 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0xA0 ,0x12 ,0x12 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
static const unsigned char EPD_2in7_lut_bb[] = {
0x80 ,0x08 ,0x00 ,0x00 ,0x00 ,0x02,
0x90 ,0x28 ,0x28 ,0x00 ,0x00 ,0x01,
0x80 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0x50 ,0x12 ,0x12 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
static const unsigned char EPD_2in7_lut_wb[] = {
0x80 ,0x08 ,0x00 ,0x00 ,0x00 ,0x02,
0x90 ,0x28 ,0x28 ,0x00 ,0x00 ,0x01,
0x80 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0x50 ,0x12 ,0x12 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
//////////////////////////////////////full screen update LUT////////////////////////////////////////////
//0~3 gray
static const unsigned char EPD_2in7_gray_lut_vcom[] =
{
0x00 ,0x00,
0x00 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01,
0x60 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01,
0x00 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
0x00 ,0x13 ,0x0A ,0x01 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
//R21
static const unsigned char EPD_2in7_gray_lut_ww[] ={
0x40 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01,
0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01,
0x10 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01,
0xA0 ,0x13 ,0x01 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
//R22H r
static const unsigned char EPD_2in7_gray_lut_bw[] ={
0x40 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01,
0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01,
0x00 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01,
0x99 ,0x0C ,0x01 ,0x03 ,0x04 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
//R23H w
static const unsigned char EPD_2in7_gray_lut_wb[] ={
0x40 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01,
0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01,
0x00 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01,
0x99 ,0x0B ,0x04 ,0x04 ,0x01 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
//R24H b
static const unsigned char EPD_2in7_gray_lut_bb[] ={
0x80 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01,
0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01,
0x20 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01,
0x50 ,0x13 ,0x01 ,0x00 ,0x00 ,0x01,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00,
};
/******************************************************************************
function : Software reset
parameter:
******************************************************************************/
static void EPD_2in7_Reset(void)
{
DEV_Digital_Write(EPD_RST_PIN, 1);
DEV_Delay_ms(200);
DEV_Digital_Write(EPD_RST_PIN, 0);
DEV_Delay_ms(2);
DEV_Digital_Write(EPD_RST_PIN, 1);
DEV_Delay_ms(200);
}
/******************************************************************************
function : send command
parameter:
Reg : Command register
******************************************************************************/
static void EPD_2in7_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
******************************************************************************/
static void EPD_2in7_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:
******************************************************************************/
static void EPD_2in7_ReadBusy(void)
{
Debug("e-Paper busy\r\n");
UBYTE busy;
do {
EPD_2in7_SendCommand(0x71);
busy = DEV_Digital_Read(EPD_BUSY_PIN);
busy =!(busy & 0x01);
} while(busy);
DEV_Delay_ms(200);
Debug("e-Paper busy release\r\n");
}
/******************************************************************************
function : set the look-up tables
parameter:
******************************************************************************/
static void EPD_2in7_SetLut(void)
{
unsigned int count;
EPD_2in7_SendCommand(0x20); //vcom
for(count = 0; count < 44; count++) {
EPD_2in7_SendData(EPD_2in7_lut_vcom_dc[count]);
}
EPD_2in7_SendCommand(0x21); //ww --
for(count = 0; count < 42; count++) {
EPD_2in7_SendData(EPD_2in7_lut_ww[count]);
}
EPD_2in7_SendCommand(0x22); //bw r
for(count = 0; count < 42; count++) {
EPD_2in7_SendData(EPD_2in7_lut_bw[count]);
}
EPD_2in7_SendCommand(0x23); //wb w
for(count = 0; count < 42; count++) {
EPD_2in7_SendData(EPD_2in7_lut_bb[count]);
}
EPD_2in7_SendCommand(0x24); //bb b
for(count = 0; count < 42; count++) {
EPD_2in7_SendData(EPD_2in7_lut_wb[count]);
}
}
void EPD_2in7_gray_SetLut(void)
{
unsigned int count;
EPD_2in7_SendCommand(0x20); //vcom
for(count=0;count<44;count++)
{EPD_2in7_SendData(EPD_2in7_gray_lut_vcom[count]);}
EPD_2in7_SendCommand(0x21); //red not use
for(count=0;count<42;count++)
{EPD_2in7_SendData(EPD_2in7_gray_lut_ww[count]);}
EPD_2in7_SendCommand(0x22); //bw r
for(count=0;count<42;count++)
{EPD_2in7_SendData(EPD_2in7_gray_lut_bw[count]);}
EPD_2in7_SendCommand(0x23); //wb w
for(count=0;count<42;count++)
{EPD_2in7_SendData(EPD_2in7_gray_lut_wb[count]);}
EPD_2in7_SendCommand(0x24); //bb b
for(count=0;count<42;count++)
{EPD_2in7_SendData(EPD_2in7_gray_lut_bb[count]);}
EPD_2in7_SendCommand(0x25); //vcom
for(count=0;count<42;count++)
{EPD_2in7_SendData(EPD_2in7_gray_lut_ww[count]);}
}
/******************************************************************************
function : Initialize the e-Paper register
parameter:
******************************************************************************/
void EPD_2IN7_Init(void)
{
EPD_2in7_Reset();
EPD_2in7_SendCommand(0x01); // POWER_SETTING
EPD_2in7_SendData(0x03); // VDS_EN, VDG_EN
EPD_2in7_SendData(0x00); // VCOM_HV, VGHL_LV[1], VGHL_LV[0]
EPD_2in7_SendData(0x2b); // VDH
EPD_2in7_SendData(0x2b); // VDL
EPD_2in7_SendData(0x09); // VDHR
EPD_2in7_SendCommand(0x06); // BOOSTER_SOFT_START
EPD_2in7_SendData(0x07);
EPD_2in7_SendData(0x07);
EPD_2in7_SendData(0x17);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0x60);
EPD_2in7_SendData(0xA5);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0x89);
EPD_2in7_SendData(0xA5);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0x90);
EPD_2in7_SendData(0x00);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0x93);
EPD_2in7_SendData(0x2A);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0xA0);
EPD_2in7_SendData(0xA5);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0xA1);
EPD_2in7_SendData(0x00);
// Power optimization
EPD_2in7_SendCommand(0xF8);
EPD_2in7_SendData(0x73);
EPD_2in7_SendData(0x41);
EPD_2in7_SendCommand(0x16); // PARTIAL_DISPLAY_REFRESH
EPD_2in7_SendData(0x00);
EPD_2in7_SendCommand(0x04); // POWER_ON
EPD_2in7_ReadBusy();
EPD_2in7_SendCommand(0x00); // PANEL_SETTING
EPD_2in7_SendData(0xAF); // KW-BF KWR-AF BWROTP 0f
EPD_2in7_SendCommand(0x30); // PLL_CONTROL
EPD_2in7_SendData(0x3A); // 3A 100HZ 29 150Hz 39 200HZ 31 171HZ
EPD_2in7_SendCommand(0x82); // VCM_DC_SETTING_REGISTER
EPD_2in7_SendData(0x12);
EPD_2in7_SetLut();
}
void EPD_2IN7_Init_4Gray(void)
{
EPD_2in7_Reset();
EPD_2in7_SendCommand(0x01); //POWER SETTING
EPD_2in7_SendData (0x03);
EPD_2in7_SendData (0x00);
EPD_2in7_SendData (0x2b);
EPD_2in7_SendData (0x2b);
EPD_2in7_SendCommand(0x06); //booster soft start
EPD_2in7_SendData (0x07); //A
EPD_2in7_SendData (0x07); //B
EPD_2in7_SendData (0x17); //C
EPD_2in7_SendCommand(0xF8); //boost??
EPD_2in7_SendData (0x60);
EPD_2in7_SendData (0xA5);
EPD_2in7_SendCommand(0xF8); //boost??
EPD_2in7_SendData (0x89);
EPD_2in7_SendData (0xA5);
EPD_2in7_SendCommand(0xF8); //boost??
EPD_2in7_SendData (0x90);
EPD_2in7_SendData (0x00);
EPD_2in7_SendCommand(0xF8); //boost??
EPD_2in7_SendData (0x93);
EPD_2in7_SendData (0x2A);
EPD_2in7_SendCommand(0xF8); //boost??
EPD_2in7_SendData (0xa0);
EPD_2in7_SendData (0xa5);
EPD_2in7_SendCommand(0xF8); //boost??
EPD_2in7_SendData (0xa1);
EPD_2in7_SendData (0x00);
EPD_2in7_SendCommand(0xF8); //boost??
EPD_2in7_SendData (0x73);
EPD_2in7_SendData (0x41);
EPD_2in7_SendCommand(0x16);
EPD_2in7_SendData(0x00);
EPD_2in7_SendCommand(0x04);
EPD_2in7_ReadBusy();
EPD_2in7_SendCommand(0x00); //panel setting
EPD_2in7_SendData(0xbf); //KW-BF KWR-AF BWROTP 0f
EPD_2in7_SendCommand(0x30); //PLL setting
EPD_2in7_SendData (0x90); //100hz
EPD_2in7_SendCommand(0x61); //resolution setting
EPD_2in7_SendData (0x00); //176
EPD_2in7_SendData (0xb0);
EPD_2in7_SendData (0x01); //264
EPD_2in7_SendData (0x08);
EPD_2in7_SendCommand(0x82); //vcom_DC setting
EPD_2in7_SendData (0x12);
EPD_2in7_SendCommand(0X50); //VCOM AND DATA INTERVAL SETTING
EPD_2in7_SendData(0x97);
}
/******************************************************************************
function : Clear screen
parameter:
******************************************************************************/
void EPD_2IN7_Clear(void)
{
UWORD Width, Height;
Width = (EPD_2IN7_WIDTH % 8 == 0)? (EPD_2IN7_WIDTH / 8 ): (EPD_2IN7_WIDTH / 8 + 1);
Height = EPD_2IN7_HEIGHT;
EPD_2in7_SendCommand(0x10);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2in7_SendData(0XFF);
}
}
EPD_2in7_SendCommand(0x13);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2in7_SendData(0XFF);
}
}
EPD_2in7_SendCommand(0x12);
EPD_2in7_ReadBusy();
}
/******************************************************************************
function : Sends the image buffer in RAM to e-Paper and displays
parameter:
******************************************************************************/
void EPD_2IN7_Display(const UBYTE *Image)
{
UWORD Width, Height;
Width = (EPD_2IN7_WIDTH % 8 == 0)? (EPD_2IN7_WIDTH / 8 ): (EPD_2IN7_WIDTH / 8 + 1);
Height = EPD_2IN7_HEIGHT;
EPD_2in7_SendCommand(0x10);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2in7_SendData(0XFF);
}
}
EPD_2in7_SendCommand(0x13);
for (UWORD j = 0; j < Height; j++) {
for (UWORD i = 0; i < Width; i++) {
EPD_2in7_SendData(Image[i + j * Width]);
}
}
EPD_2in7_SendCommand(0x12);
EPD_2in7_ReadBusy();
}
void EPD_2IN7_4GrayDisplay(const UBYTE *Image)
{
UDOUBLE i,j,k;
UBYTE temp1,temp2,temp3;
EPD_2in7_SendCommand(0x10);
for(i=0;i<5808;i++) //5808*4 46464
{
temp3=0;
for(j=0;j<2;j++)
{
temp1 = Image[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_2in7_SendData(temp3);
}
// new data
EPD_2in7_SendCommand(0x13);
for(i=0;i<5808;i++) //5808*4 46464
{
temp3=0;
for(j=0;j<2;j++)
{
temp1 = Image[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_2in7_SendData(temp3);
}
EPD_2in7_gray_SetLut();
EPD_2in7_SendCommand(0x12);
DEV_Delay_ms(200);
EPD_2in7_ReadBusy();
}
/******************************************************************************
function : Enter sleep mode
parameter:
******************************************************************************/
void EPD_2IN7_Sleep(void)
{
EPD_2in7_SendCommand(0X50);
EPD_2in7_SendData(0xf7);
EPD_2in7_SendCommand(0X02); //power off
EPD_2in7_SendCommand(0X07); //deep sleep
EPD_2in7_SendData(0xA5);
}