581 lines
16 KiB
C++
581 lines
16 KiB
C++
/**
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* @filename : epd4in2.cpp
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* @brief : Implements for Dual-color e-paper library
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* @author : Yehui from Waveshare
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*
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* Copyright (C) Waveshare August 10 2017
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documnetation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdlib.h>
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#include "epd4in2.h"
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Epd::~Epd() {
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};
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Epd::Epd() {
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reset_pin = RST_PIN;
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dc_pin = DC_PIN;
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cs_pin = CS_PIN;
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busy_pin = BUSY_PIN;
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width = EPD_WIDTH;
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height = EPD_HEIGHT;
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};
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int Epd::Init(void) {
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/* this calls the peripheral hardware interface, see epdif */
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if (IfInit() != 0) {
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return -1;
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}
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/* EPD hardware init start */
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Reset();
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SendCommand(0x01);
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SendData(0x03); // VDS_EN, VDG_EN
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SendData(0x00); // VCOM_HV, VGHL_LV[1], VGHL_LV[0]
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SendData(0x2b); // VDH
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SendData(0x2b); // VDL
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SendCommand(0x06);
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SendData(0x17);
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SendData(0x17);
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SendData(0x17); //07 0f 17 1f 27 2F 37 2f
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SendCommand(0x04);
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WaitUntilIdle();
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SendCommand(0x00);
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SendData(0xbf); // KW-BF KWR-AF BWROTP 0f
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SendCommand(0x30);
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SendData(0x3c); // 3A 100HZ 29 150Hz 39 200HZ 31 171HZ
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SendCommand(0x61); // resolution setting
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SendData(0x01);
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SendData(0x90); //128
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SendData(0x01); //
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SendData(0x2c);
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SendCommand(0x82); // vcom_DC setting
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SendData(0x12);
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SendCommand(0X50); // VCOM AND DATA INTERVAL SETTING
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SendData(0x97); // 97white border 77black border VBDF 17|D7 VBDW 97 VBDB 57 VBDF F7 VBDW 77 VBDB 37 VBDR B7
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SetLut();
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/* EPD hardware init end */
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return 0;
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}
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int Epd::Init_4Gray(void) {
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/* this calls the peripheral hardware interface, see epdif */
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if (IfInit() != 0) {
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return -1;
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}
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/* EPD hardware init start */
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Reset();
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SendCommand(0x01); //POWER SETTING
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SendData (0x03);
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SendData (0x00); //VGH=20V,VGL=-20V
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SendData (0x2b); //VDH=15V
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SendData (0x2b); //VDL=-15V
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SendData (0x13);
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SendCommand(0x06); //booster soft start
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SendData (0x17); //A
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SendData (0x17); //B
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SendData (0x17); //C
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SendCommand(0x04);
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WaitUntilIdle();
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SendCommand(0x00); //panel setting
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SendData(0x3f); //KW-3f KWR-2F BWROTP 0f BWOTP 1f
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SendCommand(0x30); //PLL setting
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SendData (0x3c); //100hz
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SendCommand(0x61); //resolution setting
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SendData (0x01); //400
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SendData (0x90);
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SendData (0x01); //300
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SendData (0x2c);
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SendCommand(0x82); //vcom_DC setting
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SendData (0x12);
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SendCommand(0X50); //VCOM AND DATA INTERVAL SETTING
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SendData(0x97);
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}
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/**
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* @brief: basic function for sending commands
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*/
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void Epd::SendCommand(unsigned char command) {
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DigitalWrite(dc_pin, LOW);
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SpiTransfer(command);
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}
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/**
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* @brief: basic function for sending data
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*/
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void Epd::SendData(unsigned char data) {
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DigitalWrite(dc_pin, HIGH);
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SpiTransfer(data);
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}
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/**
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* @brief: Wait until the busy_pin goes HIGH
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*/
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void Epd::WaitUntilIdle(void) {
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while(DigitalRead(busy_pin) == 0) { //0: busy, 1: idle
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// Wait
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}
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}
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/**
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* @brief: module reset.
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* often used to awaken the module in deep sleep,
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* see Epd::Sleep();
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*/
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void Epd::Reset(void) {
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DigitalWrite(reset_pin, LOW);
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DelayMs(2);
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DigitalWrite(reset_pin, HIGH);
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DelayMs(20);
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DigitalWrite(reset_pin, LOW);
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DelayMs(2);
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DigitalWrite(reset_pin, HIGH);
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DelayMs(20);
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DigitalWrite(reset_pin, LOW);
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DelayMs(2);
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DigitalWrite(reset_pin, HIGH);
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DelayMs(20);
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}
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/**
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* @brief: transmit partial data to the SRAM
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*/
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void Epd::SetPartialWindow(const unsigned char* buffer_black, int x, int y, int w, int l) {
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SendCommand(PARTIAL_IN);
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SendCommand(PARTIAL_WINDOW);
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SendData(x >> 8);
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SendData(x & 0xf8); // x should be the multiple of 8, the last 3 bit will always be ignored
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SendData(((x & 0xf8) + w - 1) >> 8);
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SendData(((x & 0xf8) + w - 1) | 0x07);
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SendData(y >> 8);
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SendData(y & 0xff);
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SendData((y + l - 1) >> 8);
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SendData((y + l - 1) & 0xff);
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SendData(0x01); // Gates scan both inside and outside of the partial window. (default)
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DelayMs(2);
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SendCommand(DATA_START_TRANSMISSION_2);
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if (buffer_black != NULL) {
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for(int i = 0; i < w / 8 * l; i++) {
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SendData(buffer_black[i]);
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}
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} else {
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for(int i = 0; i < w / 8 * l; i++) {
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SendData(0x00);
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}
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}
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DelayMs(2);
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SendCommand(PARTIAL_OUT);
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}
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void Epd::Set_4GrayDisplay(const char *Image, int x, int y, int w, int l)
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{
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int i,j,k,m;
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int z=0;
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unsigned char temp1,temp2,temp3;
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/****Color display description****
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white gray1 gray2 black
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0x10| 01 01 00 00
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0x13| 01 00 01 00
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*********************************/
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SendCommand(0x10);
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z=0;
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x= x/8*8;
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for(m = 0; m<EPD_HEIGHT;m++)
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for(i=0;i<EPD_WIDTH/8;i++)
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{
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if(i >= x/8 && i <(x+w)/8 && m >= y && m < y+l){
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temp3=0;
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for(j=0;j<2;j++)
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{
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temp1 = pgm_read_byte(&Image[z*2+j]);
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for(k=0;k<2;k++)
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{
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temp2 = temp1&0xC0 ;
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if(temp2 == 0xC0)
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temp3 |= 0x01;//white
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else if(temp2 == 0x00)
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temp3 |= 0x00; //black
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else if(temp2 == 0x80)
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temp3 |= 0x01; //gray1
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else //0x40
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temp3 |= 0x00; //gray2
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temp3 <<= 1;
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temp1 <<= 2;
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temp2 = temp1&0xC0 ;
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if(temp2 == 0xC0) //white
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temp3 |= 0x01;
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else if(temp2 == 0x00) //black
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temp3 |= 0x00;
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else if(temp2 == 0x80)
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temp3 |= 0x01; //gray1
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else //0x40
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temp3 |= 0x00; //gray2
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if(j!=1 || k!=1)
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temp3 <<= 1;
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temp1 <<= 2;
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}
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}
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z++;
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SendData(temp3);
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}else{
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SendData(0xff);
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}
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}
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// new data
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SendCommand(0x13);
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z=0;
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for(m = 0; m<EPD_HEIGHT;m++)
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for(i=0;i<EPD_WIDTH/8;i++)
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{
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if(i >= x/8 && i <(x+w)/8 && m >= y && m < y+l){
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temp3=0;
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for(j=0;j<2;j++)
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{
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temp1 = pgm_read_byte(&Image[z*2+j]);
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for(k=0;k<2;k++)
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{
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temp2 = temp1&0xC0 ;
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if(temp2 == 0xC0)
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temp3 |= 0x01;//white
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else if(temp2 == 0x00)
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temp3 |= 0x00; //black
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else if(temp2 == 0x80)
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temp3 |= 0x00; //gray1
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else //0x40
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temp3 |= 0x01; //gray2
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temp3 <<= 1;
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temp1 <<= 2;
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temp2 = temp1&0xC0 ;
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if(temp2 == 0xC0) //white
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temp3 |= 0x01;
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else if(temp2 == 0x00) //black
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temp3 |= 0x00;
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else if(temp2 == 0x80)
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temp3 |= 0x00; //gray1
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else //0x40
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temp3 |= 0x01; //gray2
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if(j!=1 || k!=1)
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temp3 <<= 1;
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temp1 <<= 2;
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}
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}
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z++;
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SendData(temp3);
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}else {
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SendData(0xff);
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}
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}
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set4Gray_lut();
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SendCommand(DISPLAY_REFRESH);
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DelayMs(100);
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WaitUntilIdle();
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}
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/**
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* @brief: set the look-up table
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*/
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void Epd::SetLut(void) {
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unsigned int count;
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SendCommand(LUT_FOR_VCOM); //vcom
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for(count = 0; count < 36; count++) {
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SendData(lut_vcom0[count]);
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}
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SendCommand(LUT_WHITE_TO_WHITE); //ww --
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for(count = 0; count < 36; count++) {
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SendData(lut_ww[count]);
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}
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SendCommand(LUT_BLACK_TO_WHITE); //bw r
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for(count = 0; count < 36; count++) {
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SendData(lut_bw[count]);
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}
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SendCommand(LUT_WHITE_TO_BLACK); //wb w
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for(count = 0; count < 36; count++) {
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SendData(lut_bb[count]);
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}
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SendCommand(LUT_BLACK_TO_BLACK); //bb b
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for(count = 0; count < 36; count++) {
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SendData(lut_wb[count]);
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}
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}
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void Epd::set4Gray_lut(void)
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{
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unsigned int count;
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{
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SendCommand(0x20); //vcom
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for(count=0;count<42;count++)
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{SendData(EPD_4IN2_4Gray_lut_vcom[count]);}
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SendCommand(0x21); //red not use
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for(count=0;count<42;count++)
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{SendData(EPD_4IN2_4Gray_lut_ww[count]);}
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SendCommand(0x22); //bw r
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for(count=0;count<42;count++)
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{SendData(EPD_4IN2_4Gray_lut_bw[count]);}
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SendCommand(0x23); //wb w
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for(count=0;count<42;count++)
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{SendData(EPD_4IN2_4Gray_lut_wb[count]);}
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SendCommand(0x24); //bb b
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for(count=0;count<42;count++)
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{SendData(EPD_4IN2_4Gray_lut_bb[count]);}
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SendCommand(0x25); //vcom
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for(count=0;count<42;count++)
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{SendData(EPD_4IN2_4Gray_lut_ww[count]);}
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}
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}
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/**
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* @brief: refresh and displays the frame
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*/
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void Epd::DisplayFrame(const unsigned char* frame_buffer) {
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SendCommand(RESOLUTION_SETTING);
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SendData(width >> 8);
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SendData(width & 0xff);
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SendData(height >> 8);
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SendData(height & 0xff);
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SendCommand(VCM_DC_SETTING);
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SendData(0x12);
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SendCommand(VCOM_AND_DATA_INTERVAL_SETTING);
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SendCommand(0x97); //VBDF 17|D7 VBDW 97 VBDB 57 VBDF F7 VBDW 77 VBDB 37 VBDR B7
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if (frame_buffer != NULL) {
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SendCommand(DATA_START_TRANSMISSION_1);
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for(int i = 0; i < width / 8 * height; i++) {
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SendData(0xFF); // bit set: white, bit reset: black
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}
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DelayMs(2);
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SendCommand(DATA_START_TRANSMISSION_2);
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for(int i = 0; i < width / 8 * height; i++) {
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SendData(pgm_read_byte(&frame_buffer[i]));
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}
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DelayMs(2);
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}
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SendCommand(0x12);
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DelayMs(100);
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WaitUntilIdle();
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}
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/**
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* @brief: clear the frame data from the SRAM, this won't refresh the display
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*/
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void Epd::ClearFrame(void) {
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SendCommand(RESOLUTION_SETTING);
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SendData(width >> 8);
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SendData(width & 0xff);
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SendData(height >> 8);
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SendData(height & 0xff);
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SendCommand(DATA_START_TRANSMISSION_1);
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DelayMs(2);
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for(int i = 0; i < width / 8 * height; i++) {
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SendData(0xFF);
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}
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DelayMs(2);
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SendCommand(DATA_START_TRANSMISSION_2);
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DelayMs(2);
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for(int i = 0; i < width / 8 * height; i++) {
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SendData(0xFF);
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}
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DelayMs(2);
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}
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/**
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* @brief: This displays the frame data from SRAM
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*/
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void Epd::DisplayFrame(void) {
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SetLut();
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SendCommand(DISPLAY_REFRESH);
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DelayMs(100);
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WaitUntilIdle();
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}
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/**
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* @brief: After this command is transmitted, the chip would enter the deep-sleep mode to save power.
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* The deep sleep mode would return to standby by hardware reset. The only one parameter is a
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* check code, the command would be executed if check code = 0xA5.
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* You can use Epd::Reset() to awaken and use Epd::Init() to initialize.
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*/
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void Epd::Sleep() {
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SendCommand(VCOM_AND_DATA_INTERVAL_SETTING);
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SendData(0x17); //border floating
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SendCommand(VCM_DC_SETTING); //VCOM to 0V
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SendCommand(PANEL_SETTING);
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DelayMs(100);
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SendCommand(POWER_SETTING); //VG&VS to 0V fast
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SendData(0x00);
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SendData(0x00);
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SendData(0x00);
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SendData(0x00);
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SendData(0x00);
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DelayMs(100);
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SendCommand(POWER_OFF); //power off
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WaitUntilIdle();
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SendCommand(DEEP_SLEEP); //deep sleep
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SendData(0xA5);
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}
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const unsigned char lut_vcom0[] =
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{
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0x00, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x00, 0x0F, 0x0F, 0x00, 0x00, 0x01,
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0x00, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00,
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};
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const unsigned char lut_ww[] ={
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0x50, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01,
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0xA0, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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const unsigned char lut_bw[] ={
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0x50, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01,
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0xA0, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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const unsigned char lut_bb[] ={
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0xA0, 0x08, 0x08, 0x00, 0x00, 0x02,
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0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01,
|
|
0x50, 0x08, 0x08, 0x00, 0x00, 0x02,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
};
|
|
|
|
const unsigned char lut_wb[] ={
|
|
0x20, 0x08, 0x08, 0x00, 0x00, 0x02,
|
|
0x90, 0x0F, 0x0F, 0x00, 0x00, 0x01,
|
|
0x10, 0x08, 0x08, 0x00, 0x00, 0x02,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
|
|
};
|
|
|
|
/******************************gray*********************************/
|
|
//0~3 gray
|
|
const unsigned char EPD_4IN2_4Gray_lut_vcom[] =
|
|
{
|
|
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
|
|
const unsigned char EPD_4IN2_4Gray_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
|
|
const unsigned char EPD_4IN2_4Gray_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
|
|
const unsigned char EPD_4IN2_4Gray_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
|
|
const unsigned char EPD_4IN2_4Gray_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 */
|