/* Includes ------------------------------------------------------------------*/
#include "stm32f4_discovery.h"

/**
  * @brief   Main program
  * @param  None
  * @retval None
  */

int main(void){
  //Start the device clock
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
  //Init the Device Structure
  GPIO_InitTypeDef leds;
  leds.GPIO_Pin = 0xF000;
  leds.GPIO_Mode = GPIO_Mode_OUT;
  leds.GPIO_Speed = GPIO_Speed_2MHz;
  leds.GPIO_OType = GPIO_OType_PP;
  leds.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(GPIOD, &leds);

  //Start the device(= button) clock
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
  //Init the device(=button) structure
  GPIO_InitTypeDef button;
  button.GPIO_Pin = GPIO_Pin_0;
  button.GPIO_Mode = GPIO_Mode_IN;
  button.GPIO_Speed = GPIO_Speed_2MHz;
  button.GPIO_OType = GPIO_OType_PP;
  button.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(GPIOD, &button);

  //Delay util
  volatile uint32_t d = 0x01000000;
  //Temper calc
  volatile uint16_t calc = (uint16_t)1;
  while (1){
    if(GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0)){
      GPIO_ResetBits(GPIOD, 0xF000);
      GPIO_SetBits(GPIOD, GPIO_Pin_12*calc);
      while(d--);
      d = 0x01000000;
      calc *= 2;

    }
    if(calc>9) calc = 1;
  }

}