278 lines
7.8 KiB
C++
278 lines
7.8 KiB
C++
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/**
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* @filename : epd2in66.cpp
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* @brief : Implements for e-paper library
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* @author : Waveshare
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*
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* Copyright (C) Waveshare July 29 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 "epd2in66.h"
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#include "imagedata.h"
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static const UBYTE WF_PARTIAL[159] =
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{
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0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x40,0x40,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x0A,0x00,0x00,0x00,0x00,0x00,0x02,0x01,0x00,0x00,
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0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x22,0x22,0x22,0x22,0x22,0x22,
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0x00,0x00,0x00,0x22,0x17,0x41,0xB0,0x32,0x36,
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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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/**
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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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static void Epd::Reset(void) {
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DigitalWrite(reset_pin, LOW); //module reset
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DelayMs(1);
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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: Initialize the e-Paper register
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*/
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int Epd::Init(void) {
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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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WaitUntilIdle();
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SendCommand(0x12);//soft reset
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WaitUntilIdle();
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/* Y increment, X increment */
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SendCommand(0x11);
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SendData(0x03);
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/* Set RamX-address Start/End position */
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SendCommand(0x44);
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SendData(0x01);
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SendData((width % 8 == 0)? (width / 8 ): (width / 8 + 1) );
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/* Set RamY-address Start/End position */
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SendCommand(0x45);
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SendData(0);
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SendData(0);
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SendData((height&0xff));
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SendData((height&0x100)>>8);
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WaitUntilIdle();
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return 0;
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}
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/**
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* @brief: Initialize the e-Paper register(Partial display)
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*/
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int Epd::Init_Partial(void) {
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Reset();
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WaitUntilIdle();
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SendCommand(0x12);//soft reset
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WaitUntilIdle();
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Load_LUT();
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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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/* Y increment, X increment */
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SendCommand(0x11);
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SendData(0x03);
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/* Set RamX-address Start/End position */
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SendCommand(0x44);
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SendData(0x01);
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SendData((width % 8 == 0)? (width / 8 ): (width / 8 + 1) );
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/* Set RamY-address Start/End position */
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SendCommand(0x45);
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SendData(0);
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SendData(0);
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SendData((height&0xff));
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SendData((height&0x100)>>8);
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SendCommand(0x3C);
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SendData(0x80);
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SendCommand(0x22);
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SendData(0xcf);
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SendCommand(0x20);
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WaitUntilIdle();
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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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static 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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static 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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static void Epd::WaitUntilIdle(void) {
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Serial.print("e-Paper busy \r\n ");
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UBYTE busy;
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do
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{
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busy = DigitalRead(busy_pin);
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}
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while(busy);
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DelayMs(200);
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Serial.print("e-Paper busy release \r\n ");
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}
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/******************************************************************************
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function : Turn On Display
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parameter:
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******************************************************************************/
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static void Epd::TurnOnDisplay(void)
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{
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SendCommand(0x20);
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WaitUntilIdle();
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}
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/******************************************************************************
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function : Display Array data
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******************************************************************************/
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void Epd::DisplayFrame(const UBYTE *Image) {
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UWORD Width, Height;
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Width = (width % 8 == 0)? (width / 8 ): (width / 8 + 1);
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Height = height;
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SendCommand(0x24);
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for (UWORD j = 0; j <Height; j++) {
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for (UWORD i = 0; i <Width; i++) {
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SendData(pgm_read_byte(&Image[i + j * Width]));
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}
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}
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TurnOnDisplay();
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}
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/******************************************************************************
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function : Partial Display
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******************************************************************************/
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void Epd::DisplayFrame_part(const UBYTE *Image, UWORD Xstart, UWORD Ystart, UWORD iwidth, UWORD iheight) {
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UWORD Width, Height;
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Width = (width % 8 == 0)? (width / 8 ): (width / 8 + 1);
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Height = height;
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SendCommand(0x24);
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for (UWORD j = 0; j<Height; j++) {
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for (UWORD i = 0; i <Width; i++) {
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if(j>=Ystart && j<Ystart+iheight && i>=Xstart/8 && i<(Xstart+iwidth)/8)
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SendData(Image[(i-Xstart/8) + (j-Ystart)*iwidth/8]);
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else
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SendData(0xff);
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}
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}
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TurnOnDisplay();
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}
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/******************************************************************************
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function : set the look-up tables
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parameter:
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******************************************************************************/
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static void Epd::Load_LUT(void) {
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UWORD i;
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SendCommand(0x32);
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for (i = 0; i < 153; i++) {
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SendData(WF_PARTIAL[i]);
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}
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WaitUntilIdle();
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}
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/******************************************************************************
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function : Clear Screen
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parameter:
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mode: 0:just partial mode
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1:clear all
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******************************************************************************/
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void Epd::Clear(void) {
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UWORD Width, Height;
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Width = (width % 8 == 0)? (width / 8 ): (width / 8 + 1);
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Height = height;
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SendCommand(0x24);
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for (UWORD j = 0; j <=Height; j++) {
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for (UWORD i = 0; i < Width; i++) {
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SendData(0xff);
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}
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}
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TurnOnDisplay();
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}
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/**
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* @brief: After this command is transmitted, the chip would enter the
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* deep-sleep mode to save power.
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* The deep sleep mode would return to standby by hardware reset.
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* The only one parameter is a check code, the command would be
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* You can use EPD_Reset() to awaken
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*/
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void Epd::Sleep(void) {
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SendCommand(0X10);
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SendData(0x01);
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}
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/* END OF FILE */
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