main.cpp

#include "MicroBit.h"
#include "Adafruit_SSD1306.h"
#include "Adafruit_GFX.h"

#define NUMFLAKES 10
#define XPOS 0
#define YPOS 1
#define DELTAY 2

#define LOGO16_GLCD_HEIGHT 16 
#define LOGO16_GLCD_WIDTH  16 

//MicroBit uBit;


void testdrawbitmap(const uint8_t *bitmap, uint8_t w, uint8_t h) {
  uint8_t icons[NUMFLAKES][3];
 
  // initialize
  for (uint8_t f=0; f< NUMFLAKES; f++) {
    icons[f][XPOS] = rand() % display.width();
    icons[f][YPOS] = 0;
    icons[f][DELTAY] = rand() % 5 + 1;
    
  }

  while (1) {
    // draw each icon
    for (uint8_t f=0; f< NUMFLAKES; f++) {
      display.drawBitmap(icons[f][XPOS], icons[f][YPOS], bitmap, w, h, WHITE);
    }
    display.display();
    uBit.sleep(200);
    
    // then erase it + move it
    for (uint8_t f=0; f< NUMFLAKES; f++) {
      display.drawBitmap(icons[f][XPOS], icons[f][YPOS], bitmap, w, h, BLACK);
      // move it
      icons[f][YPOS] += icons[f][DELTAY];
      // if its gone, reinit
      if (icons[f][YPOS] > display.height()) {
        icons[f][XPOS] = rand() % display.width();
        icons[f][YPOS] = 0;
        icons[f][DELTAY] = rand() % 5 + 1;
      }
    }
   }
}


void testdrawchar(void) {
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0,0);

  for (uint8_t i=0; i < 168; i++) {
    if (i == '\n') continue;
    display.write(i);
    if ((i > 0) && (i % 21 == 0))
      display.println();
  }    
  display.display();
  uBit.sleep(1);
}

void testdrawcircle(void) {
  for (int16_t i=0; i<display.height(); i+=2) {
    display.drawCircle(display.width()/2, display.height()/2, i, WHITE);
    display.display();
    uBit.sleep(1);
  }
}

void testfillrect(void) {
  uint8_t color = 1;
  for (int16_t i=0; i<display.height()/2; i+=3) {
    // alternate colors
    display.fillRect(i, i, display.width()-i*2, display.height()-i*2, color%2);
    display.display();
    uBit.sleep(1);
    color++;
  }
}

void testdrawtriangle(void) {
  for (int16_t i=0; i<min(display.width(),display.height())/2; i+=5) {
    display.drawTriangle(display.width()/2, display.height()/2-i,
                     display.width()/2-i, display.height()/2+i,
                     display.width()/2+i, display.height()/2+i, WHITE);
    display.display();
    uBit.sleep(1);
  }
}

void testfilltriangle(void) {
  uint8_t color = WHITE;
  for (int16_t i=min(display.width(),display.height())/2; i>0; i-=5) {
    display.fillTriangle(display.width()/2, display.height()/2-i,
                     display.width()/2-i, display.height()/2+i,
                     display.width()/2+i, display.height()/2+i, WHITE);
    if (color == WHITE) color = BLACK;
    else color = WHITE;
    display.display();
    uBit.sleep(1);
  }
}

void testdrawroundrect(void) {
  for (int16_t i=0; i<display.height()/2-2; i+=2) {
    display.drawRoundRect(i, i, display.width()-2*i, display.height()-2*i, display.height()/4, WHITE);
    display.display();
    uBit.sleep(1);
  }
}

void testfillroundrect(void) {
  uint8_t color = WHITE;
  for (int16_t i=0; i<display.height()/2-2; i+=2) {
    display.fillRoundRect(i, i, display.width()-2*i, display.height()-2*i, display.height()/4, color);
    if (color == WHITE) color = BLACK;
    else color = WHITE;
    display.display();
    uBit.sleep(1);
  }
}
   
void testdrawrect(void) {
  for (int16_t i=0; i<display.height()/2; i+=2) {
    display.drawRect(i, i, display.width()-2*i, display.height()-2*i, WHITE);
    display.display();
    uBit.sleep(1);
  }
}

void testdrawline() {  
  for (int16_t i=0; i<display.width(); i+=4) {
    display.drawLine(0, 0, i, display.height()-1, WHITE);
    display.display();
    uBit.sleep(1);
  }
  for (int16_t i=0; i<display.height(); i+=4) {
    display.drawLine(0, 0, display.width()-1, i, WHITE);
    display.display();
    uBit.sleep(1);
  }
  uBit.sleep(250);
  
  display.clearDisplay();
  for (int16_t i=0; i<display.width(); i+=4) {
    display.drawLine(0, display.height()-1, i, 0, WHITE);
    display.display();
    uBit.sleep(1);
  }
  for (int16_t i=display.height()-1; i>=0; i-=4) {
    display.drawLine(0, display.height()-1, display.width()-1, i, WHITE);
    display.display();
    uBit.sleep(1);
  }
  uBit.sleep(250);
  
  display.clearDisplay();
  for (int16_t i=display.width()-1; i>=0; i-=4) {
    display.drawLine(display.width()-1, display.height()-1, i, 0, WHITE);
    display.display();
    uBit.sleep(1);
  }
  for (int16_t i=display.height()-1; i>=0; i-=4) {
    display.drawLine(display.width()-1, display.height()-1, 0, i, WHITE);
    display.display();
    uBit.sleep(1);
  }
  uBit.sleep(250);

  display.clearDisplay();
  for (int16_t i=0; i<display.height(); i+=4) {
    display.drawLine(display.width()-1, 0, 0, i, WHITE);
    display.display();
    uBit.sleep(1);
  }
  for (int16_t i=0; i<display.width(); i+=4) {
    display.drawLine(display.width()-1, 0, i, display.height()-1, WHITE); 
    display.display();
    uBit.sleep(1);
  }
  uBit.sleep(250);
}

void testscrolltext(void) {
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(10,0);
  display.clearDisplay();
  display.println("scroll");
  display.display();
  uBit.sleep(1);
 
  display.startscrollright(0x00, 0x0F);
  uBit.sleep(2000);
  display.stopscroll();
  uBit.sleep(1000);
  display.startscrollleft(0x00, 0x0F);
  uBit.sleep(2000);
  display.stopscroll();
  uBit.sleep(1000);    
  display.startscrolldiagright(0x00, 0x07);
  uBit.sleep(2000);
  display.startscrolldiagleft(0x00, 0x07);
  uBit.sleep(2000);
  display.stopscroll();
}

/**
 * Demo Display
 */
//% weight=70 icon="\uf185" color=#EC7505    
namespace OLED{

    /**
     * Display the demo
     */
    //% blockId=oled_demo block="Demo"
    //% help=OLED/demo
void demo()
{

  Adafruit_SSD1306 display(uBit);

static const unsigned char logo16_glcd_bmp[] =
{ 0b00000000, 0b11000000,
  0b00000001, 0b11000000,
  0b00000001, 0b11000000,
  0b00000011, 0b11100000,
  0b11110011, 0b11100000,
  0b11111110, 0b11111000,
  0b01111110, 0b11111111,
  0b00110011, 0b10011111,
  0b00011111, 0b11111100,
  0b00001101, 0b01110000,
  0b00011011, 0b10100000,
  0b00111111, 0b11100000,
  0b00111111, 0b11110000,
  0b01111100, 0b11110000,
  0b01110000, 0b01110000,
  0b00000000, 0b00110000 };

    //uBit.init();    
    

    
    display.init();
    display.display();  
    
    uBit.sleep(2000);

  // Clear the buffer.
  display.clearDisplay();

  // draw a single pixel
  display.drawPixel(10, 10, WHITE);
  // Show the display buffer on the hardware.
  // NOTE: You _must_ call display after making any drawing commands
  // to make them visible on the display hardware!
  display.display();
  uBit.sleep(2000);
  display.clearDisplay();

  // draw many lines
  testdrawline();
  display.display();
  uBit.sleep(2000);
  display.clearDisplay();

  // draw rectangles
  testdrawrect();
  display.display();
  uBit.sleep(2000);
  display.clearDisplay();

  // draw multiple rectangles
  testfillrect();
  display.display();
  uBit.sleep(2000);
  display.clearDisplay();

  // draw mulitple circles
  testdrawcircle();
  display.display();
  uBit.sleep(2000);
  display.clearDisplay();

  // draw a white circle, 10 pixel radius
  display.fillCircle(display.width()/2, display.height()/2, 10, WHITE);
  display.display();
  uBit.sleep(2000);
  display.clearDisplay();

  testdrawroundrect();
  uBit.sleep(2000);
  display.clearDisplay();

  testfillroundrect();
  uBit.sleep(2000);
  display.clearDisplay();

  testdrawtriangle();
  uBit.sleep(2000);
  display.clearDisplay();
   
  testfilltriangle();
  uBit.sleep(2000);
  display.clearDisplay();

  // draw the first ~12 characters in the font
  testdrawchar();
  display.display();
  uBit.sleep(2000);
  display.clearDisplay();

  // draw scrolling text
  testscrolltext();
  uBit.sleep(2000);
  display.clearDisplay();

  // text display tests
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0,0);
  display.println("Hello, world!");
  display.setTextColor(BLACK, WHITE); // 'inverted' text
  display.println(3.141592);
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.print("0x"); display.println(0xDEADBEEF, 16);
  display.display();
  uBit.sleep(2000);
  display.clearDisplay();

  // miniature bitmap display
  display.drawBitmap(30, 16,  logo16_glcd_bmp, 16, 16, 1);
  display.display();
  uBit.sleep(1);

  // invert the display
  display.invertDisplay(true);
  uBit.sleep(1000); 
  display.invertDisplay(false);
  uBit.sleep(1000); 
  display.clearDisplay();

  // draw a bitmap icon and 'animate' movement
  testdrawbitmap(logo16_glcd_bmp, LOGO16_GLCD_HEIGHT, LOGO16_GLCD_WIDTH);

  
release_fiber();
}

}