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OLED-Demo.ino
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OLED-Demo.ino
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#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 screen(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
// data struct represents a Planet's position, radius, and angle in the solar system demo
struct Planet {
int center_x; // x positon of the planet
int center_y; // y positon of the planet
int radius; // radius (half of diameter) of the planet
float angle; // current angle of the planet
};
// data struct represents a star's position in the solar system demo
struct Position {
int x;
int y;
};
const int interruptPin = 2;
int demo = 0;
const int MAX_DEMOS = 4;
int previousDemo = demo;
int center_x = SCREEN_WIDTH / 2; // X coordinate of the center
int center_y = SCREEN_HEIGHT / 2; // Y coordinate of the center
Planet sun = { center_x, center_y, 7, 0 };
Planet earth = { 0, 0, 3, 0 };
Planet moon = { 0, 0, 1, 0 };
Planet mars = {0, 0, 2, 0};
Planet saturn = { 0, 0, 4, 0 };
const int MAX_STARS = 60;
Position starPositions[MAX_STARS];
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
//set up button
if (!screen.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
Serial.println(F("SSD1306 allocation failed"));
for (;;)
; // Don't proceed, loop forever
}
pinMode(interruptPin, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(interruptPin), goToNextDemo, RISING);
// set up star positons
for (int i = 0; i < MAX_STARS; i++) {
int x = random(SCREEN_WIDTH);
int y = random(SCREEN_HEIGHT);
Position pos = { x, y };
starPositions[i] = pos;
}
screen.display();
delay(2000); // Pause for 2 seconds
// Clear the buffer
screen.clearDisplay();
}
void loop() {
// Based on the currently selected demo, display either the whole animation, frame of animation, or still image
if (demo == 0) {
previousDemo = demo;
drawSolarSystem(); // Frame-by-frame
} else if (demo == 1) {
previousDemo = demo;
drawSolarSystemInfo();// Still image
} else if(demo == 2) {
previousDemo = demo;
drawPyramid(); // Still image
} else {
previousDemo = demo;
drawCircleAnimation(); //Whole Animation
}
Serial.println(demo);
}
void drawCircleAnimation() {
drawCircleFrame(10, 10, 117, 10, 150);
drawCircleFrame(12, 9, 115, 11, 125);
drawCircleFrame(18, 8, 109, 12, 75);
drawCircleFrame(31, 7, 96, 13, 50);
drawCircleFrame(64, 5, 64, 15, 25);
drawCircleFrame(96, 7, 31, 13, 50);
drawCircleFrame(109, 8, 18, 12, 75);
drawCircleFrame(115, 9, 12, 11, 125);
drawCircleFrame(117, 10, 10, 10, 150);
drawCircleFrame(115, 11, 12, 9, 125);
drawCircleFrame(109, 12, 18, 8, 75);
drawCircleFrame(96, 13, 31, 7, 50);
drawCircleFrame(64, 15, 64, 5, 25);
drawCircleFrame(31, 13, 96, 7, 50);
drawCircleFrame(18, 12, 109, 8, 75);
drawCircleFrame(12, 11, 115, 9, 125);
}
void drawCircleFrame(int x, int r, int x2, int r2, int pauseLength) {
// Clear and draw frames for (pauseLength/3) amount of time. Made to work better with interrupts.
for (int i = 0; i < pauseLength / 30; i++) {
if (previousDemo != demo) {
Serial.println("JEY!");
return;
}
screen.clearDisplay();
// Draw upper circle frame
screen.drawCircle(x, 16, r, WHITE);
// Draw lower circle frame
screen.drawCircle(x2, 48, r2, WHITE);
screen.display();
}
}
void drawSolarSystem() {
screen.clearDisplay();
// Draw stars
for (int i = 0; i < MAX_STARS/2; i++) {
screen.drawPixel(starPositions[i].x, starPositions[i].y, WHITE);
}
// Draw the Sun
screen.fillCircle(sun.center_x, sun.center_y, sun.radius, WHITE);
// Calculate the position of Earth based on it;s current angle
earth.center_x = sun.center_x + cos(earth.angle) * ((sun.radius + earth.radius) * 1.9);
earth.center_y = sun.center_y + sin(earth.angle) * ((sun.radius + earth.radius) * 1.9);
// Draw Earth
screen.fillCircle(earth.center_x, earth.center_y, earth.radius, WHITE);
// Update Earth's angle for the next frame
earth.angle += 0.01;
// Calculate the position of the Moon based on the current smaller angle and the positon of Earth
moon.center_x = earth.center_x + cos(moon.angle) * ((earth.radius + moon.radius) * 1.9);
moon.center_y = earth.center_y + sin(moon.angle) * ((earth.radius + moon.radius) * 1.9);
// Draw the Moon
screen.fillCircle(moon.center_x, moon.center_y, moon.radius, WHITE);
// Update Moons angle for the next frame
moon.angle += 0.5;
// Calculate the position of Mars based on it;s current angle
mars.center_x = sun.center_x + cos(mars.angle) * ((sun.radius + mars.radius) * 3.5);
mars.center_y = sun.center_y + sin(mars.angle) * ((sun.radius + mars.radius) * 3.5);
// Draw Mars
screen.fillCircle(mars.center_x, mars.center_y, mars.radius, WHITE);
// Update Mars' angle for the next frame
mars.angle += 0.005;
// Calculate the position of Saturn based on it's current angle and Sun
saturn.center_x = sun.center_x + cos(saturn.angle) * ((sun.radius + saturn.radius) * 4.1);
saturn.center_y = sun.center_y + sin(saturn.angle) * ((sun.radius + saturn.radius) * 4.1);
// Draw Saturn
screen.fillCircle(saturn.center_x, saturn.center_y, saturn.radius, WHITE);
// Draw Saturn's ring
screen.drawCircle(saturn.center_x, saturn.center_y, saturn.radius + 3, WHITE);
// Update Saturn's angle for the next frame
saturn.angle += 0.0005;
screen.display();
}
void drawSolarSystemInfo() {
screen.clearDisplay();
screen.setCursor(7, 20);
screen.setTextSize(1);
screen.setTextColor(WHITE);
// printPlanetInfo(earth, "EA");
// printPlanetInfo(moon, "MN");
// printPlanetInfo(saturn, "ST");
printPlanetInfo();
screen.display();
}
void printPlanetInfo() {
// screen.print(name);
screen.print("Earth's pos: ");
screen.print(earth.center_x);
screen.print(", ");
screen.print(earth.center_y);
screen.println();
screen.setCursor(7, 30);
// screen.print(name);
screen.print("Earth's angle: ");
screen.print(normalizeAngle(earth.angle));
screen.drawRoundRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 3, WHITE);
screen.println();
}
float normalizeAngle(float angle) {
angle = fmod(angle, 360.0);
if (angle < 0) {
angle += 360.0;
}
return angle;
}
void drawPyramid() {
screen.clearDisplay();
// Draw ALL stars
for (Position pos : starPositions) {
screen.drawPixel(pos.x, pos.y, WHITE);
}
// Draw Cresent Moon
screen.fillCircle(center_x-30, 7, 8, WHITE);
screen.fillCircle(center_x-28, 5, 8, BLACK);
// Define the points for the pyramid triangle
int x1 = 0;
int y1 = SCREEN_HEIGHT;
int x2 = SCREEN_WIDTH / 2;
int y2 = SCREEN_HEIGHT / 4;
int x3 = SCREEN_WIDTH;
int y3 = SCREEN_HEIGHT;
// Draw the filled triangle for the pyramid
screen.fillTriangle(x1, y1, x2, y2, x3, y3, WHITE);
// Draw the lines on the triangle to mimic pyramid bricks
screen.drawLine(0, SCREEN_HEIGHT/2, SCREEN_WIDTH, SCREEN_HEIGHT/2, BLACK);
screen.drawLine(0, (SCREEN_HEIGHT/2)+1, SCREEN_WIDTH, (SCREEN_HEIGHT/2)+1, BLACK);
screen.drawLine(0, (SCREEN_HEIGHT/2)+10, SCREEN_WIDTH, (SCREEN_HEIGHT/2)+10, BLACK);
screen.drawLine(0, (SCREEN_HEIGHT/2)+11, SCREEN_WIDTH, (SCREEN_HEIGHT/2)+11, BLACK);
screen.drawLine(0, (SCREEN_HEIGHT/2)+20, SCREEN_WIDTH, (SCREEN_HEIGHT/2)+20, BLACK);
screen.drawLine(0, (SCREEN_HEIGHT/2)+21, SCREEN_WIDTH, (SCREEN_HEIGHT/2)+21, BLACK);
// Update the screen
screen.display();
}
void goToNextDemo() {
demo = (demo + 1) % MAX_DEMOS;
}