// Define the number of devices (LED matrices)
#define NUM_DEVICES 4
#include "LedControl.h"
#define DIN_PIN 12
#define CLK_PIN 11
#define CS_PIN 10


// Create an instance of the LedControl class
LedControl lc = LedControl(DIN_PIN, CLK_PIN, CS_PIN, NUM_DEVICES);

void setup() {
  // Initialize the LED matrix
  lc.shutdown(0, false);     // Wake up display
  lc.setIntensity(0, 16);    // Set brightness level (0 is min, 15 is max)
  lc.clearDisplay(0);       // Clear display register
}

void loop() {
 // Define the pattern for the column
  byte Pattern1 = B11111111;
  byte Pattern2 = B00000000;  // Example pattern, LED on at the beginning and end

  // Set the column pattern on the LED matrix
  // Parameters: device number, column number, pattern
  //lc.setColumn(0, 0, columnPattern);
  //lc.setColumn(0, 7, columnPattern);
  lc.setRow(0, 0, Pattern1);  //for LED panel 1
  lc.setColumn(0, 0, Pattern1);

  lc.setRow(1, 0, Pattern1);  //for LED panel 2
  lc.setColumn(1, 7, Pattern1);

  lc.setRow(2, 7, Pattern1);  //for LED panel 3
  lc.setColumn(2, 0, Pattern1);
  
  lc.setRow(3, 7, Pattern1);  //for LED panel 4
  lc.setColumn(3, 7, Pattern1);  

  delay(1000);  // Delay for visibility
}