#include <MD_MAX72xx.h>

#define HARWARE_TYPE MD_MAX72XX::DR0CR0RR1_HW
#define NUM_OF_MATRIX 1 

#define CLK_PIN  8
#define DATA_PIN 6
#define CS_PIN   7

MD_MAX72XX mx = MD_MAX72XX(HARWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, NUM_OF_MATRIX);
void setup() {
 mx.begin();
}

void loop() {
mx.setPoint(0, 0, 1);
mx.setPoint(7, 7, 1);
mx.setPoint(0, 7, 1);
mx.setPoint(7, 0, 1);
   delay(1000);

 mx.setPoint(3, 3, 1);
mx.setPoint(3, 4, 1);
mx.setPoint(4, 3, 1);
mx.setPoint(4, 4, 1);
   delay(2000);
}