571 lines
16 KiB
C++
571 lines
16 KiB
C++
/**
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* @filename : epd2in9_V2.cpp
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* @brief : Implements for e-paper library
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* @author :
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*
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* Copyright (C) Waveshare Nov 9 2020
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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 "epd2in9_V2.h"
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unsigned char _WF_PARTIAL_2IN9[159] =
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{
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0x0,0x40,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x80,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x40,0x40,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x80,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0A,0x0,0x0,0x0,0x0,0x0,0x2,
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0x1,0x0,0x0,0x0,0x0,0x0,0x0,
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0x1,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x0,0x0,0x0,0x0,0x0,0x0,0x0,
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0x22,0x22,0x22,0x22,0x22,0x22,0x0,0x0,0x0,
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0x22,0x17,0x41,0xB0,0x32,0x36,
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};
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unsigned char WS_20_30[159] =
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{
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0x80, 0x66, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x40, 0x0, 0x0, 0x0,
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0x10, 0x66, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0,
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0x80, 0x66, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x40, 0x0, 0x0, 0x0,
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0x10, 0x66, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x14, 0x8, 0x0, 0x0, 0x0, 0x0, 0x1,
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0xA, 0xA, 0x0, 0xA, 0xA, 0x0, 0x1,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x14, 0x8, 0x0, 0x1, 0x0, 0x0, 0x1,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x44, 0x44, 0x44, 0x44, 0x44, 0x44, 0x0, 0x0, 0x0,
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0x22, 0x17, 0x41, 0x0, 0x32, 0x36
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};
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unsigned char Gray4[159] =
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{
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0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //VS L0 //2.28s
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0x20, 0x60, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //VS L1
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0x28, 0x60, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //VS L2
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0x2A, 0x60, 0x15, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //VS L3
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0x00, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //VS L4
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0x00, 0x02, 0x00, 0x05, 0x14, 0x00, 0x00, //TP, SR, RP of Group0
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0x1E, 0x1E, 0x00, 0x00, 0x00, 0x00, 0x01, //TP, SR, RP of Group1
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0x00, 0x02, 0x00, 0x05, 0x14, 0x00, 0x00, //TP, SR, RP of Group2
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //TP, SR, RP of Group3
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //TP, SR, RP of Group4
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //TP, SR, RP of Group5
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //TP, SR, RP of Group6
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //TP, SR, RP of Group7
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //TP, SR, RP of Group8
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //TP, SR, RP of Group9
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //TP, SR, RP of Group10
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, //TP, SR, RP of Group11
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0x24, 0x22, 0x22, 0x22, 0x23, 0x32, 0x00, 0x00, 0x00, //FR, XON
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0x22, 0x17, 0x41, 0xAE, 0x32, 0x28, //EOPT VGH VSH1 VSH2 VSL VCOM
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};
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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() {
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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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Reset();
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/* EPD hardware init start */
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WaitUntilIdle();
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SendCommand(0x12); //SWRESET
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WaitUntilIdle();
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SendCommand(0x01); //Driver output control
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SendData(0x27);
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SendData(0x01);
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SendData(0x00);
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SendCommand(0x11); //data entry mode
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SendData(0x03);
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SetMemoryArea(0, 0, width-1, height-1);
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SendCommand(0x21); // Display update control
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SendData(0x00);
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SendData(0x80);
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SetMemoryPointer(0, 0);
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WaitUntilIdle();
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SetLut_by_host(WS_20_30);
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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() {
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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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Reset();
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/* EPD hardware init start */
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WaitUntilIdle();
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SendCommand(0x12); //SWRESET
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WaitUntilIdle();
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SendCommand(0x01); //Driver output control
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SendData(0x27);
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SendData(0x01);
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SendData(0x00);
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SendCommand(0x11); //data entry mode
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SendData(0x03);
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SetMemoryArea(8, 0, width, height-1);
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SendCommand(0x3C);
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SendData(0x04);
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SetMemoryPointer(8, 0);
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WaitUntilIdle();
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SetLut_by_host(Gray4);
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/* EPD hardware init end */
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return 0;
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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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DigitalWrite(cs_pin, LOW);
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SpiTransfer(command);
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DigitalWrite(cs_pin, HIGH);
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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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DigitalWrite(cs_pin, LOW);
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SpiTransfer(data);
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DigitalWrite(cs_pin, HIGH);
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}
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/**
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* @brief: Wait until the busy_pin goes LOW
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*/
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void Epd::WaitUntilIdle(void) {
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while(1) { //=1 BUSY
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if(DigitalRead(busy_pin)==LOW)
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break;
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DelayMs(5);
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}
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DelayMs(5);
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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(20);
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DigitalWrite(reset_pin, LOW); //module reset
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DelayMs(5);
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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: put an image buffer to the frame memory.
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* this won't update the display.
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*/
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void Epd::SetFrameMemory(
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const unsigned char* image_buffer,
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int x,
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int y,
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int image_width,
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int image_height
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) {
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int x_end;
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int y_end;
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if (
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image_buffer == NULL ||
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x < 0 || image_width < 0 ||
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y < 0 || image_height < 0
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) {
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return;
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}
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/* x point must be the multiple of 8 or the last 3 bits will be ignored */
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x &= 0xF8;
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image_width &= 0xF8;
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if (x + image_width >= this->width) {
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x_end = this->width - 1;
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} else {
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x_end = x + image_width - 1;
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}
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if (y + image_height >= this->height) {
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y_end = this->height - 1;
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} else {
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y_end = y + image_height - 1;
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}
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SetMemoryArea(x, y, x_end, y_end);
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SetMemoryPointer(x, y);
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SendCommand(0x24);
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/* send the image data */
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for (int j = 0; j < y_end - y + 1; j++) {
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for (int i = 0; i < (x_end - x + 1) / 8; i++) {
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SendData(image_buffer[i + j * (image_width / 8)]);
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}
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}
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}
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void Epd::SetFrameMemory_Partial(
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const unsigned char* image_buffer,
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int x,
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int y,
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int image_width,
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int image_height
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) {
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int x_end;
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int y_end;
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if (
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image_buffer == NULL ||
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x < 0 || image_width < 0 ||
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y < 0 || image_height < 0
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) {
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return;
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}
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/* x point must be the multiple of 8 or the last 3 bits will be ignored */
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x &= 0xF8;
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image_width &= 0xF8;
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if (x + image_width >= this->width) {
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x_end = this->width - 1;
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} else {
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x_end = x + image_width - 1;
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}
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if (y + image_height >= this->height) {
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y_end = this->height - 1;
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} else {
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y_end = y + image_height - 1;
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}
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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(2);
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SetLut(_WF_PARTIAL_2IN9);
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SendCommand(0x37);
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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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SendData(0x40);
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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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SendCommand(0x3C); //BorderWavefrom
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SendData(0x80);
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SendCommand(0x22);
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SendData(0xC0);
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SendCommand(0x20);
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WaitUntilIdle();
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SetMemoryArea(x, y, x_end, y_end);
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SetMemoryPointer(x, y);
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SendCommand(0x24);
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/* send the image data */
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for (int j = 0; j < y_end - y + 1; j++) {
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for (int i = 0; i < (x_end - x + 1) / 8; i++) {
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SendData(image_buffer[i + j * (image_width / 8)]);
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}
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}
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}
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/**
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* @brief: put an image buffer to the frame memory.
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* this won't update the display.
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*
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* Question: When do you use this function instead of
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* void SetFrameMemory(
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* const unsigned char* image_buffer,
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* int x,
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* int y,
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* int image_width,
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* int image_height
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* );
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* Answer: SetFrameMemory with parameters only reads image data
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* from the RAM but not from the flash in AVR chips (for AVR chips,
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* you have to use the function pgm_read_byte to read buffers
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* from the flash).
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*/
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void Epd::SetFrameMemory(const unsigned char* image_buffer) {
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SetMemoryArea(0, 0, this->width - 1, this->height - 1);
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SetMemoryPointer(0, 0);
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SendCommand(0x24);
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/* send the image data */
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for (int i = 0; i < this->width / 8 * this->height; i++) {
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SendData(pgm_read_byte(&image_buffer[i]));
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}
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}
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void Epd::SetFrameMemory_Base(const unsigned char* image_buffer) {
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SetMemoryArea(0, 0, this->width - 1, this->height - 1);
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SetMemoryPointer(0, 0);
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SendCommand(0x24);
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/* send the image data */
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for (int i = 0; i < this->width / 8 * this->height; i++) {
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SendData(pgm_read_byte(&image_buffer[i]));
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}
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SendCommand(0x26);
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/* send the image data */
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for (int i = 0; i < this->width / 8 * this->height; i++) {
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SendData(pgm_read_byte(&image_buffer[i]));
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}
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}
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/**
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* @brief: clear the frame memory with the specified color.
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* this won't update the display.
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*/
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void Epd::ClearFrameMemory(unsigned char color) {
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SetMemoryArea(0, 0, this->width - 1, this->height - 1);
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SetMemoryPointer(0, 0);
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SendCommand(0x24);
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/* send the color data */
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for (int i = 0; i < this->width / 8 * this->height; i++) {
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SendData(color);
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}
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SendCommand(0x26);
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/* send the color data */
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for (int i = 0; i < this->width / 8 * this->height; i++) {
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SendData(color);
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}
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}
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void Epd::Display4Gray(const unsigned char *Image)
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{
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int i,j,k;
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unsigned char temp1,temp2,temp3;
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SendCommand(0x24);
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for(i=0;i<4736;i++)
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{
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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[i*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 |= 0x00;//white
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else if(temp2 == 0x00)
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temp3 |= 0x01; //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 |= 0x00;
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else if(temp2 == 0x00) //black
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temp3 |= 0x01;
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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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SendData(temp3);
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}
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// new data
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SendCommand(0x26);
|
|
for(i=0;i<4736;i++)
|
|
{
|
|
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 |= 0x00;//white
|
|
else if(temp2 == 0x00)
|
|
temp3 |= 0x01; //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 |= 0x00;
|
|
else if(temp2 == 0x00) //black
|
|
temp3 |= 0x01;
|
|
else if(temp2 == 0x80)
|
|
temp3 |= 0x00; //gray1
|
|
else //0x40
|
|
temp3 |= 0x01; //gray2
|
|
if(j!=1 || k!=1)
|
|
temp3 <<= 1;
|
|
|
|
temp1 <<= 2;
|
|
}
|
|
|
|
}
|
|
SendData(temp3);
|
|
}
|
|
|
|
DisplayFrame();
|
|
}
|
|
|
|
/**
|
|
* @brief: update the display
|
|
* there are 2 memory areas embedded in the e-paper display
|
|
* but once this function is called,
|
|
* the the next action of SetFrameMemory or ClearFrame will
|
|
* set the other memory area.
|
|
*/
|
|
void Epd::DisplayFrame(void) {
|
|
SendCommand(0x22);
|
|
SendData(0xc7);
|
|
SendCommand(0x20);
|
|
WaitUntilIdle();
|
|
}
|
|
|
|
void Epd::DisplayFrame_Partial(void) {
|
|
SendCommand(0x22);
|
|
SendData(0x0F);
|
|
SendCommand(0x20);
|
|
WaitUntilIdle();
|
|
}
|
|
|
|
void Epd::SetLut(unsigned char *lut) {
|
|
unsigned char count;
|
|
SendCommand(0x32);
|
|
for(count=0; count<153; count++)
|
|
SendData(lut[count]);
|
|
WaitUntilIdle();
|
|
}
|
|
|
|
void Epd::SetLut_by_host(unsigned char *lut) {
|
|
SetLut((unsigned char *)lut);
|
|
SendCommand(0x3f);
|
|
SendData(*(lut+153));
|
|
SendCommand(0x03); // gate voltage
|
|
SendData(*(lut+154));
|
|
SendCommand(0x04); // source voltage
|
|
SendData(*(lut+155)); // VSH
|
|
SendData(*(lut+156)); // VSH2
|
|
SendData(*(lut+157)); // VSL
|
|
SendCommand(0x2c); // VCOM
|
|
SendData(*(lut+158));
|
|
}
|
|
|
|
/**
|
|
* @brief: private function to specify the memory area for data R/W
|
|
*/
|
|
void Epd::SetMemoryArea(int x_start, int y_start, int x_end, int y_end) {
|
|
SendCommand(0x44);
|
|
/* x point must be the multiple of 8 or the last 3 bits will be ignored */
|
|
SendData((x_start >> 3) & 0xFF);
|
|
SendData((x_end >> 3) & 0xFF);
|
|
SendCommand(0x45);
|
|
SendData(y_start & 0xFF);
|
|
SendData((y_start >> 8) & 0xFF);
|
|
SendData(y_end & 0xFF);
|
|
SendData((y_end >> 8) & 0xFF);
|
|
}
|
|
|
|
/**
|
|
* @brief: private function to specify the start point for data R/W
|
|
*/
|
|
void Epd::SetMemoryPointer(int x, int y) {
|
|
SendCommand(0x4E);
|
|
/* x point must be the multiple of 8 or the last 3 bits will be ignored */
|
|
SendData((x >> 3) & 0xFF);
|
|
SendCommand(0x4F);
|
|
SendData(y & 0xFF);
|
|
SendData((y >> 8) & 0xFF);
|
|
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.
|
|
* You can use Epd::Init() to awaken
|
|
*/
|
|
void Epd::Sleep() {
|
|
SendCommand(0x10);
|
|
SendData(0x01);
|
|
// WaitUntilIdle();
|
|
}
|
|
|
|
/* END OF FILE */
|