#include <STM32Examples.h>

//STM32F407 DISCOVERY KIT  BLINKING LEDS

char LEDS[10]={PC7,PC9,PA9,PA13,PA15,PC11,PD0,PD2,PD4,PD6};

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  for(int i=0;i<10;i++)
  { pinMode(LEDS[i],OUTPUT);}
  pinMode(PB7,INPUT);
}

// the loop function runs over and over again forever
void loop() {
    if (digitalRead(PB7)==0)
  {
  for(int i=0;i<10;i++)
  {digitalWrite(LEDS[i], HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(10);                       // wait for a 0.05 second
  digitalWrite(LEDS[i], LOW);    // turn the LED off by making the voltage LOW
  delay(10);}                       // wait for a 0.05 second
  }
else
{
  for(int i=9;i>=0;i--)
  {digitalWrite(LEDS[i], HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(10);                       // wait for a 0.05 second
  digitalWrite(LEDS[i], LOW);    // turn the LED off by making the voltage LOW
  delay(10);}                       // wait for a 0.05 second
  }
  
  
}