#include "stm32c0xx_hal.h"


bool led_enabled = false; 
GPIO_PinState prev_button_state = GPIO_PIN_SET; 

void setup() {
  __HAL_RCC_GPIOA_CLK_ENABLE();

  
  GPIO_InitTypeDef GPIO_LedStruct = {0};
  GPIO_LedStruct.Pin = GPIO_PIN_6;
  GPIO_LedStruct.Mode = GPIO_MODE_OUTPUT_PP;
  HAL_GPIO_Init(GPIOA, &GPIO_LedStruct);

  
  GPIO_InitTypeDef GPIO_ButtonStruct = {0};
  GPIO_ButtonStruct.Pin = GPIO_PIN_0;
  GPIO_ButtonStruct.Mode = GPIO_MODE_INPUT;
  GPIO_ButtonStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(GPIOA, &GPIO_ButtonStruct);
}

void loop() {
  const uint32_t DEBOUNCE_MS = 30; 
  
  
  GPIO_PinState curr_button_state = HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0);

  
  if (curr_button_state != prev_button_state) {
    
    HAL_Delay(DEBOUNCE_MS); 
    
    
    curr_button_state = HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_0);
    
    if (curr_button_state != prev_button_state) {
      
      if (curr_button_state == GPIO_PIN_RESET) {
        led_enabled = !led_enabled; 
        
        
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_6, led_enabled ? GPIO_PIN_SET : GPIO_PIN_RESET);
      }
      
      
      prev_button_state = curr_button_state;
    }
  }
}