#define	MAX_DEVICES	1

#define	CLK	13
#define	DIN	11
#define	CS	10

#define VERT_PIN A0

#define DecodeMode  0x09
#define Intensity   0x0A
#define ScanLimit   0x0B
#define Shutdown    0x0C
#define DisplayTest 0x0F

byte fb[8];

uint8_t heart[8] = { 0b01100110,
					 0b11111111,
					 0b11111111,
					 0b11111111,
					 0b11111111,
					 0b01111110,
					 0b00111100,
					 0b00011000 };

uint8_t ledDiagram[8] = { 0 };

void MAX7219_write(uint8_t address, uint8_t data) {
	digitalWrite(CS, LOW);
	delay(1);
  shiftOut(DIN, CLK, MSBFIRST, address);
  shiftOut(DIN, CLK, MSBFIRST, data);
	digitalWrite(CS, HIGH);
}

void draw(uint8_t *ShowArray_ptr) {
	uint8_t temp[8] = { 0 };

	//transpose(ShowArray_ptr, temp, orient);

	for (uint8_t i = 0; i < 8; i++) {
		MAX7219_write((uint8_t) i + 1, temp[i]);
	}
}

void setup() {

  Serial.begin(115200);
  // Setup each MAX7219
	MAX7219_write(DecodeMode, 0x00); //no-decode mode
	MAX7219_write(Intensity, 0x00); //minimum brightness setting
	MAX7219_write(Shutdown, 0x01); //turn the LED matrix on
	MAX7219_write(DisplayTest, 0x00); //turn off display test
	MAX7219_write(ScanLimit, 0x07); //set 8 lines of LEDs

  pinMode(VERT_PIN, INPUT);
  draw(heart);
}

// the loop function runs over and over again forever
void loop() {
  int vert = analogRead(VERT_PIN);
  //shiftOut(DIN, CLK, MSBFIRST, send_to_address);
  //shiftOut(DIN, CLK, MSBFIRST, send_this_data);
 // mx.update();
  delay(100);
}