e-paper-display/bcm2835-1.71/e-Paper/Arduino/epd2in7/epd2in7.cpp

580 lines
16 KiB
C++

/**
* @filename : epd2in7.cpp
* @brief : Implements for e-paper library
* @author : Yehui from Waveshare
*
* Copyright (C) Waveshare August 18 2017
*
* 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 <stdlib.h>
#include "epd2in7.h"
//////////////////////////////////////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,
};
/* END OF FILE */
Epd::~Epd() {
};
Epd::Epd() {
reset_pin = RST_PIN;
dc_pin = DC_PIN;
cs_pin = CS_PIN;
busy_pin = BUSY_PIN;
width = EPD_WIDTH;
height = EPD_HEIGHT;
};
int Epd::Init(void) {
/* this calls the peripheral hardware interface, see epdif */
if (IfInit() != 0) {
return -1;
}
/* EPD hardware init start */
Reset();
SendCommand(POWER_SETTING);
SendData(0x03); // VDS_EN, VDG_EN
SendData(0x00); // VCOM_HV, VGHL_LV[1], VGHL_LV[0]
SendData(0x2b); // VDH
SendData(0x2b); // VDL
SendData(0x09); // VDHR
SendCommand(BOOSTER_SOFT_START);
SendData(0x07);
SendData(0x07);
SendData(0x17);
// Power optimization
SendCommand(0xF8);
SendData(0x60);
SendData(0xA5);
// Power optimization
SendCommand(0xF8);
SendData(0x89);
SendData(0xA5);
// Power optimization
SendCommand(0xF8);
SendData(0x90);
SendData(0x00);
// Power optimization
SendCommand(0xF8);
SendData(0x93);
SendData(0x2A);
// Power optimization
SendCommand(0xF8);
SendData(0xA0);
SendData(0xA5);
// Power optimization
SendCommand(0xF8);
SendData(0xA1);
SendData(0x00);
// Power optimization
SendCommand(0xF8);
SendData(0x73);
SendData(0x41);
SendCommand(PARTIAL_DISPLAY_REFRESH);
SendData(0x00);
SendCommand(POWER_ON);
WaitUntilIdle();
SendCommand(PANEL_SETTING);
SendData(0xAF); //KW-BF KWR-AF BWROTP 0f
SendCommand(PLL_CONTROL);
SendData(0x3A); //3A 100HZ 29 150Hz 39 200HZ 31 171HZ
SendCommand(VCM_DC_SETTING_REGISTER);
SendData(0x12);
DelayMs(2);
SetLut();
/* EPD hardware init end */
return 0;
}
void Epd::Init_4Gray(void)
{
Reset();
SendCommand(0x01); //POWER SETTING
SendData (0x03);
SendData (0x00);
SendData (0x2b);
SendData (0x2b);
SendCommand(0x06); //booster soft start
SendData (0x07); //A
SendData (0x07); //B
SendData (0x17); //C
SendCommand(0xF8); //boost??
SendData (0x60);
SendData (0xA5);
SendCommand(0xF8); //boost??
SendData (0x89);
SendData (0xA5);
SendCommand(0xF8); //boost??
SendData (0x90);
SendData (0x00);
SendCommand(0xF8); //boost??
SendData (0x93);
SendData (0x2A);
SendCommand(0xF8); //boost??
SendData (0xa0);
SendData (0xa5);
SendCommand(0xF8); //boost??
SendData (0xa1);
SendData (0x00);
SendCommand(0xF8); //boost??
SendData (0x73);
SendData (0x41);
SendCommand(0x16);
SendData(0x00);
SendCommand(0x04);
WaitUntilIdle();
SendCommand(0x00); //panel setting
SendData(0xbf); //KW-BF KWR-AF BWROTP 0f
SendCommand(0x30); //PLL setting
SendData (0x90); //100hz
SendCommand(0x61); //resolution setting
SendData (0x00); //176
SendData (0xb0);
SendData (0x01); //264
SendData (0x08);
SendCommand(0x82); //vcom_DC setting
SendData (0x12);
SendCommand(0X50); //VCOM AND DATA INTERVAL SETTING
SendData(0x97);
}
/**
* @brief: basic function for sending commands
*/
void Epd::SendCommand(unsigned char command) {
DigitalWrite(dc_pin, LOW);
SpiTransfer(command);
}
/**
* @brief: basic function for sending data
*/
void Epd::SendData(unsigned char data) {
DigitalWrite(dc_pin, HIGH);
SpiTransfer(data);
}
/**
* @brief: Wait until the busy_pin goes HIGH
*/
void Epd::WaitUntilIdle(void) {
Serial.print("e-Paper busy\r\n");
while(DigitalRead(busy_pin) == 0) { //0: busy, 1: idle
DelayMs(100);
}
Serial.print("e-Paper busy release\r\n");
}
/**
* @brief: module reset.
* often used to awaken the module in deep sleep,
* see Epd::Sleep();
*/
void Epd::Reset(void) {
DigitalWrite(reset_pin, HIGH);
DelayMs(200);
DigitalWrite(reset_pin, LOW);
DelayMs(10);
DigitalWrite(reset_pin, HIGH);
DelayMs(200);
}
/**
* @brief: set the look-up tables
*/
void Epd::SetLut(void) {
unsigned int count;
SendCommand(LUT_FOR_VCOM); //vcom
for(count = 0; count < 44; count++) {
SendData(lut_vcom_dc[count]);
}
SendCommand(LUT_WHITE_TO_WHITE); //ww --
for(count = 0; count < 42; count++) {
SendData(lut_ww[count]);
}
SendCommand(LUT_BLACK_TO_WHITE); //bw r
for(count = 0; count < 42; count++) {
SendData(lut_bw[count]);
}
SendCommand(LUT_WHITE_TO_BLACK); //wb w
for(count = 0; count < 42; count++) {
SendData(lut_bb[count]);
}
SendCommand(LUT_BLACK_TO_BLACK); //bb b
for(count = 0; count < 42; count++) {
SendData(lut_wb[count]);
}
}
void Epd::gray_SetLut(void)
{
unsigned int count;
SendCommand(0x20); //vcom
for(count=0;count<44;count++)
{SendData(EPD_2in7_gray_lut_vcom[count]);}
SendCommand(0x21); //red not use
for(count=0;count<42;count++)
{SendData(EPD_2in7_gray_lut_ww[count]);}
SendCommand(0x22); //bw r
for(count=0;count<42;count++)
{SendData(EPD_2in7_gray_lut_bw[count]);}
SendCommand(0x23); //wb w
for(count=0;count<42;count++)
{SendData(EPD_2in7_gray_lut_wb[count]);}
SendCommand(0x24); //bb b
for(count=0;count<42;count++)
{SendData(EPD_2in7_gray_lut_bb[count]);}
SendCommand(0x25); //vcom
for(count=0;count<42;count++)
{SendData(EPD_2in7_gray_lut_ww[count]);}
}
/**
* @brief: transmit partial data to the SRAM
*/
void Epd::TransmitPartialData(const unsigned char* buffer, int x, int y, int w, int l) {
if (buffer != NULL) {
SendCommand(PARTIAL_DATA_START_TRANSMISSION_2);
SendData(x >> 8);
SendData(x & 0xf8); // x should be the multiple of 8, the last 3 bit will always be ignored
SendData(y >> 8);
SendData(y & 0xff);
SendData(w >> 8);
SendData(w & 0xf8); // w (width) should be the multiple of 8, the last 3 bit will always be ignored
SendData(l >> 8);
SendData(l & 0xff);
DelayMs(2);
for(int i = 0; i < w / 8 * l; i++) {
SendData(buffer[i]);
}
DelayMs(2);
}
}
/**
* @brief: refreshes a specific part of the display
*/
void Epd::RefreshPartial(int x, int y, int w, int l) {
SendCommand(PARTIAL_DISPLAY_REFRESH);
SendData(x >> 8);
SendData(x & 0xf8); // x should be the multiple of 8, the last 3 bit will always be ignored
SendData(y >> 8);
SendData(y & 0xff);
SendData(w >> 8);
SendData(w & 0xf8); // w (width) should be the multiple of 8, the last 3 bit will always be ignored
SendData(l >> 8);
SendData(l & 0xff);
WaitUntilIdle();
}
/**
* @brief: refresh and displays the frame
*/
void Epd::DisplayFrame(const unsigned char* frame_buffer) {
if (frame_buffer != NULL) {
SendCommand(DATA_START_TRANSMISSION_1);
DelayMs(2);
for(int i = 0; i < 5808; i++) {
SendData(0xff);
}
DelayMs(2);
SendCommand(DATA_START_TRANSMISSION_2);
DelayMs(2);
for(int i = 0; i < 5808; i++) {
SendData(pgm_read_byte(&frame_buffer[i]));
}
DelayMs(2);
SendCommand(0x12);
DelayMs(200);
WaitUntilIdle();
}
}
void Epd::Display4Gray(const unsigned char *Image)
{
int i,j,k;
unsigned char temp1,temp2,temp3;
SendCommand(0x10);
for(i=0;i<5808;i++) //5808*4 46464
{
temp3=0;
for(j=0;j<2;j++)
{
temp1 = pgm_read_byte(&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;
}
}
SendData(temp3);
}
// new data
SendCommand(0x13);
for(i=0;i<5808;i++) //5808*4 46464
{
temp3=0;
for(j=0;j<2;j++)
{
temp1 = pgm_read_byte(&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;
}
}
SendData(temp3);
}
gray_SetLut();
SendCommand(0x12);
DelayMs(200);
WaitUntilIdle();
}
/**
* @brief: clear the frame data from the SRAM, this won't refresh the display
*/
void Epd::ClearFrame(void) {
SendCommand(DATA_START_TRANSMISSION_1);
DelayMs(2);
for(int i = 0; i < width * height / 8; i++) {
SendData(0xFF);
}
DelayMs(2);
SendCommand(DATA_START_TRANSMISSION_2);
DelayMs(2);
for(int i = 0; i < width * height / 8; i++) {
SendData(0xFF);
}
DelayMs(2);
}
/**
* @brief: This displays the frame data from SRAM
*/
void Epd::DisplayFrame(void) {
SendCommand(DISPLAY_REFRESH);
DelayMs(200);
WaitUntilIdle();
}
/**
* @brief: After this command is transmitted, the chip would enter the deep-sleep mode to save power.
* The deep sleep mode would return to standby by hardware reset. The only one parameter is a
* check code, the command would be executed if check code = 0xA5.
* You can use Epd::Reset() to awaken and use Epd::Init() to initialize.
*/
void Epd::Sleep() {
SendCommand(DEEP_SLEEP);
SendData(0xa5);
}
const unsigned char lut_vcom_dc[] = {
0x00, 0x00,
0x00, 0x0F, 0x0F, 0x00, 0x00, 0x05,
0x00, 0x32, 0x32, 0x00, 0x00, 0x02,
0x00, 0x0F, 0x0F, 0x00, 0x00, 0x05,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
//R21H
const unsigned char lut_ww[] = {
0x50, 0x0F, 0x0F, 0x00, 0x00, 0x05,
0x60, 0x32, 0x32, 0x00, 0x00, 0x02,
0xA0, 0x0F, 0x0F, 0x00, 0x00, 0x05,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
//R22H r
const unsigned char lut_bw[] =
{
0x50, 0x0F, 0x0F, 0x00, 0x00, 0x05,
0x60, 0x32, 0x32, 0x00, 0x00, 0x02,
0xA0, 0x0F, 0x0F, 0x00, 0x00, 0x05,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
//R24H b
const unsigned char lut_bb[] =
{
0xA0, 0x0F, 0x0F, 0x00, 0x00, 0x05,
0x60, 0x32, 0x32, 0x00, 0x00, 0x02,
0x50, 0x0F, 0x0F, 0x00, 0x00, 0x05,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
//R23H w
const unsigned char lut_wb[] =
{
0xA0, 0x0F, 0x0F, 0x00, 0x00, 0x05,
0x60, 0x32, 0x32, 0x00, 0x00, 0x02,
0x50, 0x0F, 0x0F, 0x00, 0x00, 0x05,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};