johngineer's Oscilloscope Christmas Tree code adjusted for the Particle Photon

photon_christmas_tree.ino

#define TRACE_DELAY	15000 // trace delay in uS. making this longer will
			      // result in a straighter drawing, but slower
			      // refresh rate. making it too short will result
			      // in an angular blob.

#define NUM_POINTS	19    // our tree is defined by 19 x/y coord. pairs

#define X               D0     // attach scope channel 1 (X)
#define Y               D1     // attach scope channel 2 (y)


// x coords for drawing the tree (in rough clockwise order, from bottom)
unsigned char x_points[NUM_POINTS] = {	110, 110, 50, 80, 65, 95, 80, 110, 95, 125,
					155, 140, 170, 155, 185, 170, 200, 140, 140 };

// y coords
unsigned char y_points[NUM_POINTS] = {	15, 35, 35, 85, 85, 135, 135, 185, 185, 235,
					185, 185, 135, 135, 85, 85, 35, 35, 15 };

void setup()
{
  pinMode(X, OUTPUT);
  pinMode(Y, OUTPUT);
  //analogWriteResolution(X, 234);
  //analogWriteResolution(Y, 234);
}

void loop()
{
    unsigned char t;
    {
      for(t = 0; t < NUM_POINTS; t++)		// run through the points in x & y
      {
        analogWrite(X, x_points[t]);
        analogWrite(Y, y_points[t]);
	delayMicroseconds(TRACE_DELAY);		// wait TRACE_DELAY microseconds
      }
    }
}