e-paper-display/bcm2835-1.71/e-Paper/Arduino/epd2in9/epd2in9.ino

142 lines
5.0 KiB
Arduino
Raw Normal View History

2024-01-31 22:04:09 +00:00
/**
* @filename : epd2in9-demo.ino
* @brief : 2.9inch e-paper display demo
* @author : Yehui from Waveshare
*
* Copyright (C) Waveshare September 9 2017
*
* 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 "epd2in9.h"
#include "epdpaint.h"
#include "imagedata.h"
#define COLORED 0
#define UNCOLORED 1
/**
* 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[1024];
Paint paint(image, 0, 0); // width should be the multiple of 8
Epd epd;
unsigned long time_start_ms;
unsigned long time_now_s;
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
if (epd.Init(lut_full_update) != 0) {
Serial.print("e-Paper init failed");
return;
}
/**
* there are 2 memory areas embedded in the e-paper display
* and once the display is refreshed, the memory area will be auto-toggled,
* i.e. the next action of SetFrameMemory will set the other memory area
* therefore you have to clear the frame memory twice.
*/
epd.ClearFrameMemory(0xFF); // bit set = white, bit reset = black
epd.DisplayFrame();
epd.ClearFrameMemory(0xFF); // bit set = white, bit reset = black
epd.DisplayFrame();
paint.SetRotate(ROTATE_0);
paint.SetWidth(128);
paint.SetHeight(24);
/* For simplicity, the arguments are explicit numerical coordinates */
paint.Clear(COLORED);
paint.DrawStringAt(0, 4, "Hello world!", &Font16, UNCOLORED);
epd.SetFrameMemory(paint.GetImage(), 0, 10, paint.GetWidth(), paint.GetHeight());
paint.Clear(UNCOLORED);
paint.DrawStringAt(0, 4, "e-Paper Demo", &Font16, COLORED);
epd.SetFrameMemory(paint.GetImage(), 0, 30, 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.SetFrameMemory(paint.GetImage(), 16, 60, paint.GetWidth(), paint.GetHeight());
paint.Clear(UNCOLORED);
paint.DrawCircle(32, 32, 30, COLORED);
epd.SetFrameMemory(paint.GetImage(), 72, 60, paint.GetWidth(), paint.GetHeight());
paint.Clear(UNCOLORED);
paint.DrawFilledRectangle(0, 0, 40, 50, COLORED);
epd.SetFrameMemory(paint.GetImage(), 16, 130, paint.GetWidth(), paint.GetHeight());
paint.Clear(UNCOLORED);
paint.DrawFilledCircle(32, 32, 30, COLORED);
epd.SetFrameMemory(paint.GetImage(), 72, 130, paint.GetWidth(), paint.GetHeight());
epd.DisplayFrame();
delay(2000);
if (epd.Init(lut_partial_update) != 0) {
Serial.print("e-Paper init failed");
return;
}
/**
* there are 2 memory areas embedded in the e-paper display
* and once the display is refreshed, the memory area will be auto-toggled,
* i.e. the next action of SetFrameMemory will set the other memory area
* therefore you have to set the frame memory and refresh the display twice.
*/
epd.SetFrameMemory(IMAGE_DATA);
epd.DisplayFrame();
epd.SetFrameMemory(IMAGE_DATA);
epd.DisplayFrame();
time_start_ms = millis();
}
void loop() {
// put your main code here, to run repeatedly:
time_now_s = (millis() - time_start_ms) / 1000;
char time_string[] = {'0', '0', ':', '0', '0', '\0'};
time_string[0] = time_now_s / 60 / 10 + '0';
time_string[1] = time_now_s / 60 % 10 + '0';
time_string[3] = time_now_s % 60 / 10 + '0';
time_string[4] = time_now_s % 60 % 10 + '0';
paint.SetWidth(32);
paint.SetHeight(96);
paint.SetRotate(ROTATE_90);
paint.Clear(UNCOLORED);
paint.DrawStringAt(0, 4, time_string, &Font24, COLORED);
epd.SetFrameMemory(paint.GetImage(), 80, 72, paint.GetWidth(), paint.GetHeight());
epd.DisplayFrame();
delay(500);
}