580 lines
16 KiB
C++
580 lines
16 KiB
C++
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/**
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* @filename : epd2in7.cpp
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* @brief : Implements for e-paper library
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* @author : Yehui from Waveshare
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*
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* Copyright (C) Waveshare August 18 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 "epd2in7.h"
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//////////////////////////////////////full screen update LUT////////////////////////////////////////////
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//0~3 gray
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static const unsigned char EPD_2in7_gray_lut_vcom[] =
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{
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0x00 ,0x00,
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0x00 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01,
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0x60 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01,
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0x00 ,0x14 ,0x00 ,0x00 ,0x00 ,0x01,
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0x00 ,0x13 ,0x0A ,0x01 ,0x00 ,0x01,
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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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//R21
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static const unsigned char EPD_2in7_gray_lut_ww[] ={
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0x40 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01,
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0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01,
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0x10 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01,
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0xA0 ,0x13 ,0x01 ,0x00 ,0x00 ,0x01,
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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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//R22H r
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static const unsigned char EPD_2in7_gray_lut_bw[] ={
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0x40 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01,
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0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01,
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0x00 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01,
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0x99 ,0x0C ,0x01 ,0x03 ,0x04 ,0x01,
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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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//R23H w
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static const unsigned char EPD_2in7_gray_lut_wb[] ={
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0x40 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01,
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0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01,
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0x00 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01,
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0x99 ,0x0B ,0x04 ,0x04 ,0x01 ,0x01,
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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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//R24H b
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static const unsigned char EPD_2in7_gray_lut_bb[] ={
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0x80 ,0x0A ,0x00 ,0x00 ,0x00 ,0x01,
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0x90 ,0x14 ,0x14 ,0x00 ,0x00 ,0x01,
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0x20 ,0x14 ,0x0A ,0x00 ,0x00 ,0x01,
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0x50 ,0x13 ,0x01 ,0x00 ,0x00 ,0x01,
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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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/* END OF FILE */
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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(POWER_SETTING);
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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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SendData(0x09); // VDHR
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SendCommand(BOOSTER_SOFT_START);
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SendData(0x07);
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SendData(0x07);
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SendData(0x17);
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// Power optimization
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SendCommand(0xF8);
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SendData(0x60);
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SendData(0xA5);
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// Power optimization
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SendCommand(0xF8);
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SendData(0x89);
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SendData(0xA5);
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// Power optimization
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SendCommand(0xF8);
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SendData(0x90);
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SendData(0x00);
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// Power optimization
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SendCommand(0xF8);
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SendData(0x93);
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SendData(0x2A);
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// Power optimization
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SendCommand(0xF8);
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SendData(0xA0);
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SendData(0xA5);
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// Power optimization
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SendCommand(0xF8);
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SendData(0xA1);
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SendData(0x00);
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// Power optimization
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SendCommand(0xF8);
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SendData(0x73);
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SendData(0x41);
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SendCommand(PARTIAL_DISPLAY_REFRESH);
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SendData(0x00);
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SendCommand(POWER_ON);
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WaitUntilIdle();
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SendCommand(PANEL_SETTING);
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SendData(0xAF); //KW-BF KWR-AF BWROTP 0f
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SendCommand(PLL_CONTROL);
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SendData(0x3A); //3A 100HZ 29 150Hz 39 200HZ 31 171HZ
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SendCommand(VCM_DC_SETTING_REGISTER);
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SendData(0x12);
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DelayMs(2);
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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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void Epd::Init_4Gray(void)
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{
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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);
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SendData (0x2b);
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SendData (0x2b);
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SendCommand(0x06); //booster soft start
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SendData (0x07); //A
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SendData (0x07); //B
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SendData (0x17); //C
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SendCommand(0xF8); //boost??
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SendData (0x60);
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SendData (0xA5);
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SendCommand(0xF8); //boost??
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SendData (0x89);
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SendData (0xA5);
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SendCommand(0xF8); //boost??
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SendData (0x90);
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SendData (0x00);
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SendCommand(0xF8); //boost??
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SendData (0x93);
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SendData (0x2A);
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SendCommand(0xF8); //boost??
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SendData (0xa0);
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SendData (0xa5);
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SendCommand(0xF8); //boost??
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SendData (0xa1);
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SendData (0x00);
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SendCommand(0xF8); //boost??
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SendData (0x73);
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SendData (0x41);
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SendCommand(0x16);
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SendData(0x00);
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SendCommand(0x04);
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WaitUntilIdle();
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SendCommand(0x00); //panel setting
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SendData(0xbf); //KW-BF KWR-AF BWROTP 0f
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SendCommand(0x30); //PLL setting
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SendData (0x90); //100hz
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SendCommand(0x61); //resolution setting
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SendData (0x00); //176
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SendData (0xb0);
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SendData (0x01); //264
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SendData (0x08);
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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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Serial.print("e-Paper busy\r\n");
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while(DigitalRead(busy_pin) == 0) { //0: busy, 1: idle
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DelayMs(100);
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}
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Serial.print("e-Paper busy release\r\n");
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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, HIGH);
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DelayMs(200);
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DigitalWrite(reset_pin, LOW);
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DelayMs(10);
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DigitalWrite(reset_pin, HIGH);
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DelayMs(200);
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}
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/**
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* @brief: set the look-up tables
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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 < 44; count++) {
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SendData(lut_vcom_dc[count]);
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}
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SendCommand(LUT_WHITE_TO_WHITE); //ww --
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for(count = 0; count < 42; 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 < 42; 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 < 42; 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 < 42; count++) {
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SendData(lut_wb[count]);
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}
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}
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void Epd::gray_SetLut(void)
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{
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unsigned int count;
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SendCommand(0x20); //vcom
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for(count=0;count<44;count++)
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{SendData(EPD_2in7_gray_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_2in7_gray_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_2in7_gray_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_2in7_gray_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_2in7_gray_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_2in7_gray_lut_ww[count]);}
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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::TransmitPartialData(const unsigned char* buffer, int x, int y, int w, int l) {
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if (buffer != NULL) {
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SendCommand(PARTIAL_DATA_START_TRANSMISSION_2);
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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(y >> 8);
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SendData(y & 0xff);
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SendData(w >> 8);
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SendData(w & 0xf8); // w (width) should be the multiple of 8, the last 3 bit will always be ignored
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SendData(l >> 8);
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SendData(l & 0xff);
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DelayMs(2);
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for(int i = 0; i < w / 8 * l; i++) {
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SendData(buffer[i]);
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}
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DelayMs(2);
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}
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}
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/**
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* @brief: refreshes a specific part of the display
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*/
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void Epd::RefreshPartial(int x, int y, int w, int l) {
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SendCommand(PARTIAL_DISPLAY_REFRESH);
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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,
|
||
|
|
};
|