#pragma GCC push_options      //This first two lines of the code is a must!!!1
#pragma GCC optimize ("O0")

#include "stm32c0xx.h"

int main(void)
{
  RCC -> IOPENR |= (1UL<<1);    // Configure GPIOB 
 
  GPIOB -> MODER &=~(3UL<<2);    //Clear Pin 1
  GPIOB -> MODER |= (1UL<<2);   //Set Pin 1 as an output
  GPIOB -> OTYPER &=~(1UL<<1);  // set PB1 as push pull
  GPIOB -> MODER &=~(3UL<<14); // set Pb7 an input 
  GPIOB -> MODER &=~ (3UL<<20); //Set Pb10 as input 

  GPIOB ->PUPDR |= (1UL<<15);
  GPIOB -> PUPDR |= (1UL<<21);
  
  while (1)
  {
     if(GPIOB -> IDR&(37UL<<4)== 0x0010)
     {
        GPIOB -> ODR ^= (1UL);
     }
     else if (GPIOB -> IDR&(37UL<<4)==0x0040)
     {
       GPIOB -> ODR &= (1UL);
     }
     else
     {
      GPIOB -> ODR &=~(1UL);
     }
  }
}