352 lines
8.9 KiB
C++
352 lines
8.9 KiB
C++
/*****************************************************************************
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* | File : epd2in9d.h
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* | Author : Waveshare team
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* | Function : 2.9inch e-paper
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* | Info :
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*----------------
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* | This version: V1.0
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* | Date : 2019-06-24
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* | Info :
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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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******************************************************************************/
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#include <stdlib.h>
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#include "epd2in9d.h"
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/**
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* partial screen update LUT
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**/
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const unsigned char EPD_2IN9D_lut_vcom1[] = {
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0x00, 0x19, 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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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 EPD_2IN9D_lut_ww1[] = {
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0x00, 0x19, 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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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 EPD_2IN9D_lut_bw1[] = {
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0x80, 0x19, 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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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 EPD_2IN9D_lut_wb1[] = {
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0x40, 0x19, 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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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 EPD_2IN9D_lut_bb1[] = {
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0x00, 0x19, 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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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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Epd::~Epd()
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{
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};
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Epd::Epd()
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{
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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: basic function for sending commands
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*/
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void Epd::SendCommand(unsigned char command)
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{
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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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{
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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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{
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char busy;
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do {
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SendCommand(0x71);
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busy = DigitalRead(busy_pin);
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busy =!(busy & 0x01);
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} while(busy);
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DelayMs(20);
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}
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/******************************************************************************
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function : LUT download
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parameter:
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******************************************************************************/
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void Epd::SetPartReg(void)
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{
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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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SendData(0x03);
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SendCommand(0x06); //boost 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(0xbf); //LUT from OTP，128x296
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SendCommand(0x30); //PLL setting
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SendData(0x3a); // 3a 100HZ 29 150Hz 39 200HZ 31 171HZ
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SendCommand(0x61); //resolution setting
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SendData(EPD_WIDTH);
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SendData((EPD_WIDTH >> 8) & 0xff);
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SendData(EPD_HEIGHT & 0xff);
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SendCommand(0x82); //vcom_DC setting
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SendData(0x12);
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SendCommand(0X50);
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SendData(0x97);
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unsigned int count;
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SendCommand(0x20);
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for(count=0; count<44; count++) {
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SendData(EPD_2IN9D_lut_vcom1[count]);
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}
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SendCommand(0x21);
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for(count=0; count<42; count++) {
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SendData(EPD_2IN9D_lut_ww1[count]);
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}
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SendCommand(0x22);
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for(count=0; count<42; count++) {
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SendData(EPD_2IN9D_lut_bw1[count]);
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}
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SendCommand(0x23);
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for(count=0; count<42; count++) {
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SendData(EPD_2IN9D_lut_wb1[count]);
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}
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SendCommand(0x24);
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for(count=0; count<42; count++) {
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SendData(EPD_2IN9D_lut_bb1[count]);
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}
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}
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void Epd::TurnOnDisplay(void)
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{
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SendCommand(0x12); //DISPLAY REFRESH
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DelayMs(10); //!!!The delay here is necessary, 200uS at least!!!
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WaitUntilIdle();
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}
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int Epd::Init(void)
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{
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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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SendCommand(0x04);
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WaitUntilIdle();//waiting for the electronic paper IC to release the idle signal
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SendCommand(0x00); //panel setting
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SendData(0x1f); //LUT from OTP，KW-BF KWR-AF BWROTP 0f BWOTP 1f
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SendCommand(0x61); //resolution setting
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SendData (0x80);
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SendData (0x01);
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SendData (0x28);
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SendCommand(0X50); //VCOM AND DATA INTERVAL SETTING
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return 0;
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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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{
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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(2);
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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(2);
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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(2);
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DigitalWrite(reset_pin, HIGH);
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DelayMs(20);
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}
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void Epd::Clear(void)
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{
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int w, h;
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w = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
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h = EPD_HEIGHT;
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SendCommand(0x10);
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for (int j = 0; j < h; j++) {
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for (int i = 0; i < w; i++) {
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SendData(0x00);
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}
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}
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SendCommand(0x13);
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for (int j = 0; j < h; j++) {
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for (int i = 0; i < w; 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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void Epd::Display(const unsigned char* frame_buffer)
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{
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int w = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
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int h = EPD_HEIGHT;
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SendCommand(0x10);
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for (int j = 0; j < h; j++) {
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for (int i = 0; i < w; i++) {
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SendData(0x00);
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}
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}
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// Dev_Delay_ms(10);
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SendCommand(0x13);
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for (int j = 0; j < h; j++) {
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for (int i = 0; i < w; i++) {
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SendData(pgm_read_byte(&frame_buffer[i + j * w]));
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}
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}
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// Dev_Delay_ms(10);
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TurnOnDisplay();
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}
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void Epd::DisplayPart(const unsigned char* frame_buffer)
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{
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/* Set partial Windows */
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SetPartReg();
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SendCommand(0x91); //This command makes the display enter partial mode
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SendCommand(0x90); //resolution setting
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SendData(0); //x-start
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SendData(EPD_WIDTH - 1); //x-end
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SendData(0);
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SendData(0); //y-start
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SendData(EPD_HEIGHT / 256);
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SendData(EPD_HEIGHT % 256 - 1); //y-end
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SendData(0x28);
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int w = (EPD_WIDTH % 8 == 0)? (EPD_WIDTH / 8 ): (EPD_WIDTH / 8 + 1);
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int h = EPD_HEIGHT;
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/* send data */
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SendCommand(0x13);
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for (int j = 0; j < h; j++) {
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for (int i = 0; i < w; i++) {
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SendData(pgm_read_byte(&frame_buffer[i + j * w]));
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}
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}
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/* Set partial refresh */
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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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* executed if check code = 0xA5.
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* You can use Epd::Init() to awaken
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*/
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void Epd::Sleep()
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{
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SendCommand(0X50);
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SendData(0xf7);
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SendCommand(0X02); //power off
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WaitUntilIdle();
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SendCommand(0X07); //deep sleep
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SendData(0xA5);
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DigitalWrite(reset_pin, LOW);
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}
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/* END OF FILE */
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