e-paper-display/bcm2835-1.71/e-Paper/Arduino/epd4in2b_V2/epd4in2b_V2.ino

100 lines
3.5 KiB
C++

/**
* @filename : epd4in2b_V2.ino
* @brief : 4.2inch e-paper display (B_V2) demo
* @author : Yehui from Waveshare
*
* Copyright (C) Waveshare Nov 25 2020
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documnetation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <SPI.h>
#include "epd4in2b_V2.h"
#include "imagedata.h"
#include "epdpaint.h"
#define COLORED 0
#define UNCOLORED 1
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Epd epd;
if (epd.Init() != 0) {
Serial.print("e-Paper init failed");
return;
}
/* This clears the SRAM of the e-paper display */
epd.ClearFrame();
/**
* Due to RAM not enough in Arduino UNO, a frame buffer is not allowed.
* In this case, a smaller image buffer is allocated and you have to
* update a partial display several times.
* 1 byte = 8 pixels, therefore you have to set 8*N pixels at a time.
*/
unsigned char image[1500];
Paint paint(image, 400, 28); //width should be the multiple of 8
paint.Clear(UNCOLORED);
paint.DrawStringAt(0, 0, "e-Paper Demo", &Font24, COLORED);
epd.SetPartialWindowBlack(paint.GetImage(), 100, 40, paint.GetWidth(), paint.GetHeight());
paint.Clear(COLORED);
paint.DrawStringAt(100, 2, "Hello world", &Font24, UNCOLORED);
epd.SetPartialWindowRed(paint.GetImage(), 0, 64, paint.GetWidth(), paint.GetHeight());
paint.SetWidth(64);
paint.SetHeight(64);
paint.Clear(UNCOLORED);
paint.DrawRectangle(0, 0, 40, 50, COLORED);
paint.DrawLine(0, 0, 40, 50, COLORED);
paint.DrawLine(40, 0, 0, 50, COLORED);
epd.SetPartialWindowBlack(paint.GetImage(), 72, 120, paint.GetWidth(), paint.GetHeight());
paint.Clear(UNCOLORED);
paint.DrawCircle(32, 32, 30, COLORED);
epd.SetPartialWindowBlack(paint.GetImage(), 200, 120, paint.GetWidth(), paint.GetHeight());
paint.Clear(UNCOLORED);
paint.DrawFilledRectangle(0, 0, 40, 50, COLORED);
epd.SetPartialWindowRed(paint.GetImage(), 72, 200, paint.GetWidth(), paint.GetHeight());
paint.Clear(UNCOLORED);
paint.DrawFilledCircle(32, 32, 30, COLORED);
epd.SetPartialWindowRed(paint.GetImage(), 200, 200, paint.GetWidth(), paint.GetHeight());
/* This displays the data from the SRAM in e-Paper module */
epd.DisplayFrame();
/* This displays an image */
// epd.DisplayFrame(IMAGE_BLACK, IMAGE_RED);
/* Deep sleep */
epd.Sleep();
}
void loop() {
// put your main code here, to run repeatedly:
}