230 lines
6.5 KiB
C++
230 lines
6.5 KiB
C++
/*****************************************************************************
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* | File : EPD_4in01f.c
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* | Author : Waveshare team
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* | Function : 4.01inch e-paper
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* | Info :
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*----------------
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* | This version: V1.0
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* | Date : 2020-12-25
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* | Info :
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* -----------------------------------------------------------------------------
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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 "epd4in01f.h"
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#include "imagedata.h"
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Epd::~Epd() {
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};
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Epd::Epd() {
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reset_pin = RST_PIN;
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dc_pin = DC_PIN;
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cs_pin = CS_PIN;
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busy_pin = BUSY_PIN;
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width = EPD_WIDTH;
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height = EPD_HEIGHT;
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};
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/******************************************************************************
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function : Initialize the e-Paper register
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parameter:
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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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EPD_4IN01F_BusyHigh();
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SendCommand(0x00);
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SendData(0x2f);
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SendData(0x00);
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SendCommand(0x01);
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SendData(0x37);
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SendData(0x00);
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SendData(0x05);
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SendData(0x05);
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SendCommand(0x03);
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SendData(0x00);
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SendCommand(0x06);
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SendData(0xC7);
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SendData(0xC7);
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SendData(0x1D);
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SendCommand(0x41);
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SendData(0x00);
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SendCommand(0x50);
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SendData(0x37);
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SendCommand(0x60);
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SendData(0x22);
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SendCommand(0x61);
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SendData(0x02);
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SendData(0x80);
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SendData(0x01);
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SendData(0x90);
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SendCommand(0xE3);
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SendData(0xAA);
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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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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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void Epd::EPD_4IN01F_BusyHigh(void)// If BUSYN=0 then waiting
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{
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while(!(DigitalRead(BUSY_PIN)));
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}
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void Epd::EPD_4IN01F_BusyLow(void)// If BUSYN=1 then waiting
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{
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while(DigitalRead(BUSY_PIN));
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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); //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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function : Sends the image buffer in RAM to e-Paper and displays
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parameter:
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******************************************************************************/
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void Epd::EPD_4IN01F_Display(const UBYTE *image) {
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unsigned long i,j;
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SendCommand(0x61);//Set Resolution setting
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SendData(0x02);
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SendData(0x80);
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SendData(0x01);
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SendData(0x90);
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SendCommand(0x10);
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for(i=0; i<height; i++) {
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for(j=0; j<width/2; j++) {
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SendData(image[j+((width/2)*i)]);
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}
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}
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SendCommand(0x04);//0x04
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EPD_4IN01F_BusyHigh();
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SendCommand(0x12);//0x12
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EPD_4IN01F_BusyHigh();
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SendCommand(0x02); //0x02
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EPD_4IN01F_BusyLow();
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DelayMs(200);
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}
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/******************************************************************************
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function : Sends the part image buffer in RAM to e-Paper and displays
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parameter:
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******************************************************************************/
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void Epd::EPD_4IN01F_Display_part(const UBYTE *image, UWORD xstart, UWORD ystart,
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UWORD image_width, UWORD image_heigh)
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{
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unsigned long i,j;
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SendCommand(0x61);//Set Resolution setting
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SendData(0x02);
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SendData(0x80);
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SendData(0x01);
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SendData(0x90);
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SendCommand(0x10);
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for(i=0; i<height; i++) {
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for(j=0; j< width/2; j++) {
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if(i<image_heigh+ystart && i>=ystart && j<(image_width+xstart)/2 && j>=xstart/2) {
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SendData(pgm_read_byte(&image[(j-xstart/2) + (image_width/2*(i-ystart))]));
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}
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else {
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SendData(0x11);
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}
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}
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}
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SendCommand(0x04);//0x04
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EPD_4IN01F_BusyHigh();
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SendCommand(0x12);//0x12
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EPD_4IN01F_BusyHigh();
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SendCommand(0x02); //0x02
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EPD_4IN01F_BusyLow();
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DelayMs(200);
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}
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/******************************************************************************
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function :
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Clear screen
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******************************************************************************/
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void Epd::Clear(UBYTE color) {
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SendCommand(0x61);//Set Resolution setting
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SendData(0x02);
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SendData(0x80);
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SendData(0x01);
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SendData(0x90);
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SendCommand(0x10);
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for(int i=0; i<width/2; i++) {
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for(int j=0; j<height; j++) {
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SendData((color<<4)|color);
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}
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}
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SendCommand(0x04);//0x04
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EPD_4IN01F_BusyHigh();
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SendCommand(0x12);//0x12
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EPD_4IN01F_BusyHigh();
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SendCommand(0x02); //0x02
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EPD_4IN01F_BusyLow();
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DelayMs(500);
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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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DelayMs(100);
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SendCommand(0x07);
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SendData(0xA5);
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DelayMs(100);
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DigitalWrite(RST_PIN, 0); // Reset
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}
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/* END OF FILE */
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