// STM32 Nucleo-C031C6 I2C Example
// Simulation: https://wokwi.com/projects/365421666018061313

int LED1 = 2;
int LED2 = 3;
int LED3 = 4;
int LED4 = 5;
int LED5 = 6;
int LED6 = 7;
void setup() {

 pinMode(LED1, OUTPUT);

 pinMode(LED2, OUTPUT);  

 pinMode(LED3, OUTPUT);  

 pinMode(LED4, OUTPUT);  

 pinMode(LED5, OUTPUT);  

 pinMode(LED6, OUTPUT);  
  }

void loop() {

  digitalWrite(LED1 ,LOW);
  delay(200);
  digitalWrite(LED1 ,HIGH);
  delay(20);

  digitalWrite(LED2,LOW);
  delay(200);
  digitalWrite(LED2,HIGH);
  delay(20);
   
  digitalWrite(LED3,LOW);
  delay(200);
  digitalWrite(LED3,HIGH);
  delay(20);

  digitalWrite(LED4,LOW);
  delay(200);
  digitalWrite(LED4,HIGH);
  delay(20);

  digitalWrite(LED5,LOW);
  delay(200);
  digitalWrite(LED5,HIGH);
  delay(20);

  digitalWrite(LED6,LOW);
  delay(200);
  digitalWrite(LED6,HIGH);
  delay(20);
   }