/*
2_Basic_grayscale example for e-radionica.com Inkplate 6
For this example you will need only USB cable and Inkplate 6
Select "Inkplate 6(ESP32)" from Tools -> Board menu.
Don't have "Inkplate 6(ESP32)" option? Follow our tutorial and add it:
https://e-radionica.com/en/blog/add-inkplate-6-to-arduino-ide/
This example will show you how you can draw some simple graphics using
Adafruit GFX functions. Yes, Inkplate library is 100% compatible with GFX lib!
Learn more about Adafruit GFX: https://learn.adafruit.com/adafruit-gfx-graphics-library
Inkplate will be used in grayscale mode which is 3 bit, so you can have up to 8 different colors (black, 6 gray colors and white)
Color is represented by number, where number 0 means black and number 7 means white, while everything in between are shades of gray.
Want to learn more about Inkplate? Visit www.inkplate.io
Looking to get support? Write on our forums: http://forum.e-radionica.com/en/
15 July 2020 by e-radionica.com
*/
#include "Inkplate.h" //Include Inkplate library to the sketch
#include "image.h" //Include image file that holds grayscale image data. You can see it in next tab inside Arduino IDE.
Inkplate display(INKPLATE_3BIT); //Create object on Inkplate library and set library to work in grayscale mode (3-bit)
//Other option is monochrome mode, which is demonstrated in next example "2-Inkplate_basic_monochrome"
#define DELAY_MS 5000 //Delay in milliseconds between screen refresh. Refreshing e-paper screens more often than 5s is not recommended
//Want to refresh faster? Use partial update! Find example in "3-Inkplate-basic_partial_update"
void setup() {
display.begin(); //Init library (you should call this function ONLY ONCE)
display.clearDisplay(); //Clear any data that may have been in (software) frame buffer.
//(NOTE! This does not clean image on screen, it only clears it in the frame buffer inside ESP32).
display.clean(); //Clear everything that has previously been on a screen
display.setTextColor(0,7); display.setCursor(150, 320); display.setTextSize(4); display.print("Welcome to Inkplate 6!"); display.display(); //Write hello message
delay(5000); //Wait a little bit
}
void loop() {
//Example will demostrate funcionality one by one. You always first set everything in the frame buffer and afterwards you show
//it on the screen using display.display().
//Let'sstart by drawing pixel at x = 100 and y = 50 location
display.clearDisplay(); //Clear everytning that is inside frame buffer in ESP32
display.drawPixel(100, 50, 0); //Draw one black pixel at X = 100, Y = 50 position in 0 (BLACK) color
displayCurrentAction("Drawing a pixel");//Function which writes small text at bottom left indicating what's currently done
//NOTE: you do not need displayCurrentAction function to use Inkplate!
display.display(); //Send image to display. You need to call this one each time you want to transfer frame buffer to the screen.
delay(DELAY_MS); //Wait a little bit
//Now, let's draw some random pixels!
display.clearDisplay(); //Clear everything that is inside frame buffer in ESP32
for (int i = 0; i < 1000; i++) { //Write 1000 random colored pixels at random locations
display.drawPixel(random(0, 799), random(0, 599), random(0, 7)); //We are setting color of the pixels using numbers from 0 to 7,
} //where 0 mens black, 7 white and gray is in between
displayCurrentAction("Drawing 600 random pixels in random colors");
display.display(); //Write everything from frame buffer to screen
delay(DELAY_MS); //Wait
//Draw two diagonal lines accros screen
display.clearDisplay();
display.drawLine(0, 0, 799, 599, 0); //All of those drawing fuctions originate from Adafruit GFX library, so maybe you are already familiar
display.drawLine(799, 0, 0, 599, 0); //with those. Arguments are: start X, start Y, ending X, ending Y, color.
displayCurrentAction("Drawing two diagonal lines");
display.display();
delay(DELAY_MS);
//And again, let's draw some random lines on screen!
display.clearDisplay();
for (int i = 0; i < 100; i++) {
display.drawLine(random(0, 799), random(0, 599), random(0, 799), random(0, 599), random(0, 7));
}
displayCurrentAction("Drawing 50 random lines in random colors");
display.display();
delay(DELAY_MS);
//Now draw one horizontal...
display.clearDisplay();
display.drawFastHLine(100, 100, 600, 0); //Arguments are: starting X, starting Y, length, color
displayCurrentAction("Drawing one horizontal line");
display.display();
delay(DELAY_MS);
//... and one vertical line
display.clearDisplay();
display.drawFastVLine(100, 100, 400, 0); //Arguments are: starting X, starting Y, length, color
displayCurrentAction("Drawing one vertical line");
display.display();
delay(DELAY_MS);
//Now, let' make a grid using only horizontal and vertical lines in random colors!
display.clearDisplay();
for (int i = 0; i < 800; i += 8) {
display.drawFastVLine(i, 0, 600, (i/8)&0x0F);
}
for (int i = 0; i < 600; i += 4) {
display.drawFastHLine(0, i, 800, (i/8)&0x0F);
}
displayCurrentAction("Drawing a grid using horizontal and vertical lines in different colors");
display.display();
delay(DELAY_MS);
//Draw rectangle at X = 200, Y = 200 and size of 400x300 pixels
display.clearDisplay();
display.drawRect(200, 200, 400, 300, 0); //Arguments are: start X, start Y, size X, size Y, color
displayCurrentAction("Drawing rectangle");
display.display();
delay(DELAY_MS);
//Draw rectangles on random location, size 100x150 pixels in random color
display.clearDisplay();
for (int i = 0; i < 50; i++) {
display.drawRect(random(0, 799), random(0, 599), 100, 150, random(0, 7));
}
displayCurrentAction("Drawing many rectangles in random colors");
display.display();
delay(DELAY_MS);
//Draw filled black rectangle at X = 200, Y = 200, size of 400x300 pixels in gray color
display.clearDisplay();
display.fillRect(200, 200, 400, 300, 4); //Arguments are: start X, start Y, size X, size Y, color
displayCurrentAction("Drawing gray rectangle");
display.display();
delay(DELAY_MS);
//Draw filled random colored rectangles on random location, size of 30x30 pixels in radnom color
display.clearDisplay();
for (int i = 0; i < 50; i++) {
display.fillRect(random(0, 799), random(0, 599), 30, 30, random(0, 7));
}
displayCurrentAction("Drawing many filled rectangles randomly in random colors");
display.display();
delay(DELAY_MS);
//Draw circle at center of a screen with radius of 75 pixels
display.clearDisplay();
display.drawCircle(400, 300, 75, 0); //Arguments are: start X, start Y, radius, color
displayCurrentAction("Drawing a circle");
display.display();
delay(DELAY_MS);
//Draw some random colored circles at random location with radius of 25 pixels in random color
display.clearDisplay();
for (int i = 0; i < 40; i++) {
display.drawCircle(random(0, 799), random(0, 599), 25, random(0, 7));
}
displayCurrentAction("Drawing many circles randomly in random colors");
display.display();
delay(DELAY_MS);
//Draw black filled circle at center of a screen with radius of 75 pixels
display.clearDisplay();
display.fillCircle(400, 300, 75, 0); //Arguments are: start X, start Y, radius, color
displayCurrentAction("Drawing black-filled circle");
display.display();
delay(DELAY_MS);
//Draw some random colored filled circles at random location with radius of 15 pixels
display.clearDisplay();
for (int i = 0; i < 40; i++) {
display.fillCircle(random(0, 799), random(0, 599), 15, random(0, 7));
}
displayCurrentAction("Drawing many filled circles randomly in random colors");
display.display(); //To show stuff on screen, you always need to call display.display();
delay(DELAY_MS);
//Draw rounded rectangle at X = 200, Y = 200 and size of 400x300 pixels and radius of 10 pixels
display.clearDisplay();
display.drawRoundRect(200, 200, 400, 300, 10, 0); //Arguments are: start X, start Y, size X, size Y, radius, color
displayCurrentAction("Drawing rectangle with rounded edges");
display.display();
delay(DELAY_MS);
//Draw rounded rectangles on random location, size 100x150 pixels, radius of 5 pixels in radnom color
display.clearDisplay();
for (int i = 0; i < 50; i++) {
display.drawRoundRect(random(0, 799), random(0, 599), 100, 150, 5, random(0, 7));
}
displayCurrentAction("Drawing many rounded edges rectangles");
display.display();
delay(DELAY_MS);
//Draw filled random colored rectangle at X = 200, Y = 200, size of 400x300 pixels and radius of 10 pixels
display.clearDisplay();
display.fillRoundRect(200, 200, 400, 300, 10, 0); //Arguments are: start X, start Y, size X, size Y, radius, color
displayCurrentAction("Drawing filled rectangle with rounded edges");
display.display();
delay(DELAY_MS);
//Draw filled random colored rectangle on random location, size of 30x30 pixels, radius of 3 pixels in radnom color
display.clearDisplay();
for (int i = 0; i < 50; i++) {
display.fillRoundRect(random(0, 799), random(0, 599), 30, 30, 3, random(0, 7));
}
displayCurrentAction("Drawing many filled rectangle with rounded edges in random colors");
display.display();
delay(DELAY_MS);
//Draw simple triangle
display.clearDisplay();
display.drawTriangle(250, 400, 550, 400, 400, 100, 0); //Arguments are: X1, Y1, X2, Y2, X3, Y3, color
display.display();
delay(DELAY_MS);
//Draw filled triangle inside simple triangle (so no display.clearDisplay() this time)
display.fillTriangle(300, 350, 500, 350, 400, 150, 0); //Arguments are: X1, Y1, X2, Y2, X3, Y3, color
displayCurrentAction("Drawing filled triangle inside exsisting one");
display.display();
delay(DELAY_MS);
//Display some grayscale image on screen. We are going to display e-radionica logo on display at location X = 100, Y = 100
//Image size is 500x332 pixels.
display.clearDisplay();
display.drawBitmap3Bit(100, 100, picture1, 500, 332); //Arguments are: start X, start Y, array variable name, size X, size Y
displayCurrentAction("Drawing a bitmap image");
display.display();
delay(DELAY_MS);
//Write some text on screen with different sizes and color
display.clearDisplay();
for (int i = 0; i < 6; i++) {
display.setTextColor(i);
display.setTextSize(i + 1); //textSize parameter starts at 0 and goes up to 10 (larger won't fit Inkplate 6 screen)
display.setCursor(200, (i * i * 8)); //setCursor works as same as on LCD displays - sets "the cursor" at the place you want to write someting next
display.print("INKPLATE6!"); //The actual text you want to show on e-paper as String
}
displayCurrentAction("Text in different sizes and shadings");
display.display(); //To show stuff on screen, you always need to call display.display();
delay(DELAY_MS);
//Write same text on different location, but now invert colors (text is white, text background is black)
display.setTextColor(7, 0); //First argument is text color, while second argument is background color. In greyscale,
for (int i = 0; i < 6; i++) { //you are able to choose from 8 different colors (0-7)
display.setTextSize(i + 1);
display.setCursor(200, 300 + (i * i * 8));
display.print("INKPLATE6!");
}
display.display();
delay(DELAY_MS);
//Write text and rotate it by 90 deg. forever
int r = 0;
display.setTextSize(8);
display.setTextColor(7, 0);
while (true) {
display.setCursor(100, 100);
display.clearDisplay();
display.setRotation(r); //Set rotation will sent rotation for the entire display, so you can use it sideways or upside-down
display.print("INKPLATE6");
display.display();
r++;
delay(DELAY_MS);
}
//Did you know that you can change between monochrome and greyscale mode anytime?
//Just call Inkplate display(INKPLATE_1BIT) or Inkplate display(INKPLATE_3BIT)
}
//Small function that will write on the screen what function is currently in demonstration.
void displayCurrentAction(String text) {
display.setTextSize(2);
display.setCursor(2, 580);
display.print(text);
}